GE.14- 
    Agreement  
  Concerning the Adoption of Uniform Technical Prescriptions for 
Wheeled Vehicles, Equipment and Parts which can be fitted and/or be 
used on Wheeled Vehicles  and the Conditions for Reciprocal 
Recognition of Approvals Granted on the Basis of these Prescriptions *  
(Revision 2, including the amendments which entered into force on 16 October 1995)  
_________  
  Addendum 66:  Regulation No. 67  
  Revision 4 
Incorporat ing all valid text up to:  
Erratum to Revision 3 (English only) (by the secretariat)  
Corrigendum 2 to Revision 3 - Date of entry into force:  26 July 2012  
Supplement 11 to the 01 series of amendments - Date of entry into force: 15 July 2013  
Supplement 12 to the 01 series of amendments - Date of entry into force: 3 November 2013  
Supplement 13 to the 01 series of amendments - Date of entry into force: 10 June 2014  
Supplement 14 to the 01 series of amendments - Date of entry into force: 9 October 2014  
 
  Uniform  provisi ons concerning the approval of:  
  I. Approval of specific equipment of vehicles of category M and N 
using liquefied petroleum gases in their propulsion system  
  II. Approval of vehicles of categ ory M and N  fitted with specific 
equipment for the use  of liquefied petroleum gases in their 
propulsion system with regard to the installation of such 
equipment  
_________  
UNITED NATIONS  
  
 * Former title of the Agreement: Agreement Concerning the Adoption of Uniform Conditions of 
Approval and Reciprocal Recognition of  Approval for Motor Vehicle Equipment and Parts, done at 
Geneva on 20  March  1958.  E/ECE/324/Rev.1/Add.66/Rev. 4−E/ECE/TRANS/505/Rev.1/Add.66/Rev. 4 
   
 
 
16 October  2014  
 
 E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/ Add.66/Rev.4  
 3 Regulation No. 67  
  Uniform provisions concerning : 
  I. Approval of specific equipment of vehicles of categor ies 
M and N using liquefied petroleum gases in their 
propulsion system  
  II. Approval of vehicles of categor ies M and N fitted with 
specific equipment for the use of liquefied petroleum 
gases in their propulsion system with regard to the 
installation of such equipment  
Contents  
 Page  
Regulation  
1.  Scope  ................................ ................................ ................................ ................................ ................   6 
2.  Definition and classification of component s ................................ ................................ ....................   6 
  Part I - Approval of specific equipment of vehicles of categories M and N using liquefied petroleum 
gases in their propulsion system ................................ ................................ .........................   11 
3.   Application for approval  ................................ ................................ ................................ ..................   11 
4.   Markings  ................................ ................................ ................................ ................................ ..........   11 
5.   Approval  ................................ ................................ ................................ ................................ ...........   12 
6.  Specifications regarding the various components of the LPG equipment  ................................ ........   13 
7.   Modifications of a type of lpg equipment and extension of approval  ................................ ..............   19 
8.   (Not allocated)  ................................ ................................ ................................ ................................ ..  19 
9.   Conformity of production  ................................ ................................ ................................ .................   19 
10.   Penalties for no n-conformity of production  ................................ ................................ .....................   20 
11.   Transitional provisions regarding the various components of the lpg equipment  ............................   20 
12.   Production definitively discontinued  ................................ ................................ ................................   21 
13.   Names and addresses of Technical Services responsible for conducting approval tests, and of  
Type Approval Authorities  ................................ ................................ ................................ ...............   21 
  Part II - Approval of vehicles of categories M and N fitted with specific equipment for the  
use of liquefied petroleum gases in their propulsion system with regard to the  
installation of such equipment ................................ ................................ ............................   21 
14.   Definitions  ................................ ................................ ................................ ................................ ........   21 
15.   Application for approval  ................................ ................................ ................................ ..................   22 
16.   Approval  ................................ ................................ ................................ ................................ ...........   22 
17.   Requirements for the installation of specific equipment for the use of liquefied petroleum  
gases in the propulsion system of a vehicle ................................ ................................ ......................   23 E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
4 18.   Conformity of production  ................................ ................................ ................................ .................   30 
19.   Penalties for non -conformity of production  ................................ ................................ .....................   31 
20.   Modificatio n and extension of approval of a vehicle type  ................................ ...............................   31 
21.   Production definitively discontinued  ................................ ................................ ................................   31 
22.   Transitional provisions r egarding the installation of various components of the LPG equipment  
and the type approval of a vehicle fitted with specific equipment for the use of liquefied  
petroleum gas in its propulsion system with regard to the installation of such equipment  ..............   32 
23.  Names and addresses of Technical Services responsible for conducting approval tests, and  
of Type Approval Authorities  ................................ ................................ ................................ ..........   32 
Annexes  
1  Essential characteristics of the vehicle, engine and LPG  related equipment  ................................ ....  33 
2A  Arrangement of the lpg equipmen t type approval mark  ................................ ................................ ...  38 
2B  Communication  concerning the approval or extension or refusal or withdrawal of  
approval or production definitively discontinued of a type of LPG equipment pursuant to  
Regulation No. 67  ................................ ................................ ................................ ...........................   39 
Appendix  - Containers only  ................................ ................................ ................................ .............   41 
2C  Arrangement of approval marks  ................................ ................................ ................................ .......  43 
2D  Communication  concerning the approval or extension or refusal or withdrawal of app roval or  
production definitively discontinued of a vehicle type with regard to the installation of LPG  
systems pursuant to Regulation No.  67 ................................ ................................ ...............................   44 
3  Provisio ns regarding the approval of lpg container accessories  ................................ .......................   46 
4  Provisions regarding the approval of the fuel pump  ................................ ................................ .........   52 
5  Provisions regarding the approval of the lpg filter unit  ................................ ................................ ....  53 
6  Provisions regarding the approval of the pressure regulator and  the vaporizer  ................................   54 
7  Provisions regarding the approval of the shut -off valve, the non -return valve, the gas -tube  
pressure relie f valve and the service coupling  ................................ ................................ ..................   56 
8  Provisions regarding the approval of flexible hoses with couplings  ................................ ................   60 
9  Provisions regarding the approval of the filling unit  ................................ ................................ ........   81 
10  Provisions regarding the approval of LPG c ontainers  ................................ ................................ ......  86 
Appendix 1  ................................ ................................ ................................ ................................ .......  107 
Appendix 2  ................................ ................................ ................................ ................................ .......  110 
Appendix 3  ................................ ................................ ................................ ................................ .......  112 
Appendix 4  ................................ ................................ ................................ ................................ .......  113 
Appendix 5  - Examples of special vessels  ................................ ................................ .......................   116 
Appendix 6  - Material test methods  ................................ ................................ ................................ .  118 
11  Provisions regarding the approval of gas injection  devices, or gas mixing pieces, or injectors and  
the fuel rail  ................................ ................................ ................................ ................................ .......  120 
12  Provisions regarding the approval of the gas dosage unit when not combined with the g as  
injection device(s)  ................................ ................................ ................................ ............................   123 E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/ Add.66/Rev.4  
 5 13  Provisions regarding the approval of the pressure and/or temperature sensor  ................................ .  124 
14  Provisions regarding the approval of the electronic control unit  ................................ ......................   126 
15  Test procedures  ................................ ................................ ................................ ................................   127 
16  Provisions regarding LPG identification mark for M 2 and M 3 category vehicles  ............................   141 
17  Provisions regarding identification mark for service coupling  ................................ .........................   142 E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
6   1.  Scope  
This Regulation applies to:  
1.1. Part I  Approval of specific equipment of vehicles of category M and N1 
using liquefie d petroleum gases in their propulsion system;  
1.2. Part II  Approval  of vehicles of category M and N1 fitted with specific 
equipment for the use of liquefied petroleum gases in their 
propulsion system with regard to the installation of such 
equipment.  
  2.  Definition and classification of components  
LPG components for use in vehicles shall be classified with regard to the 
maximum operating pressure and function, according to Figure 1.  
 Class 0  High pressure parts including tubes and fittings containing liq uid 
LPG with a pressure > 3,000 kPa.  
 Class 1  High pressure parts including tubes and fittings containing liquid 
LPG at vapour pressure or increased vapour pressure up to 
3,000  kPa.  
 Class 2  Low pressure parts including tubes and fittings containing 
vapor ized LPG with a maximum operating pressure below 450  kPa 
and over 20 kPa above atmospheric pressure.  
 Class 2A  Low pressure parts for a limited pressure range including tubes 
and fittings containing vaporized LPG with a maximum operating 
pressure below 120  kPa and over 20 kPa above atmospheric 
pressure.  
 Class 3  Shut-off valves and pressure relief valves, when operating in the 
liquid phase.  
LPG components designed for a maximum operating pressure below 20 kPa 
above atmospheric pressure are not subjected to  this Regulation.  
A component can consist of several parts, each part classified in his own 
class with regard to maximum operating pressure and function.  
  
 1 As defined in the Consolidated Resolution on the Construction of Vehicles (R.E.3.), document 
ECE/TRANS/WP.29/78/Rev. 3, para. 2  
http://www.unece.org/trans/main/wp29/wp29wgs/wp29gen/wp29resolutions.html  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/ Add.66/Rev.4  
 7 Figure 1  
Classification with regard to maximum operating pressure and function  
 No 
No 
Or Yes Operating pressure 
> 3 MPa?  
Maximum 
operating pressure  
< 20kPa ?  
Safety 
valves?  
Maximum 
operation pressure 
< 120kPa?  
 
Class 2   
Class 1  
Class3   
Class 0  Maximum 
operating pressure 
> 450kPa?  
 
Not subjected to 
this regulation.   
Start  
 
Class 2A  
S T O P  Yes 
Yes 
Yes No Yes 
No 
No E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
8 2.1. "Pressure " means relative pressure versus atmospheric pressure, unless 
otherwise stated.  
2.1.1.  "Service pressure " means the settled pressure at a uniform gas temperature of 
15 °C. 
2.1.2.  "Test pressure " means the pressure to which the compone nt is subjected 
during the approval test.  
2.1.3.  "Working pressure  (WP) " means the maximum pressure to which the 
component is designed to be subjected and on the basis of which its strength 
is determined.  
2.1.4.  "Operating pressure " means the pressure unde r normal operating conditions.  
2.1.5.  "Maximum operating pressure " means the maximum pressure in a 
component which might arise during operation.  
2.1.6.  "Classification pressure " means the maximum allowable operating pressure 
in a component according to its  classification.  
2.2. "Specific equipment " means:  
(a) The container ; 
(b) The accessories fitted to the container ; 
(c) The vaporizer/pressure regulator ;  
(d) The shut-off valve ; 
(e) The gas injection device or injector or gas mixing piece ; 
(f) The gas dosa ge unit either separate or combined with the gas injection 
device ; 
(g) Flexible  hoses ; 
(h) Filling  unit; 
(i) Non-return  valve ; 
(j) Gas-tube pressure relief valve ; 
(k) Filter  unit; 
(l) Pressure  or temperature sensor ; 
(m) Fuel pump ; 
(n) Service  coupling ; 
(o) Electronic  control unit ; 
(p) Fuel rail; 
(q) Pressure  relief device ; 
(r) Multi -component . 
2.3. "Container " means any vessel used for the storage of liquefied petroleum gas . 
2.3.1.  A container can be:  
(a) A standard cylindrical container with a cylindrical  shell, two dished 
ends either torispherical or elliptical and the required openings;  
(b) A special container: other containers than standard cylindrical containers. 
The dimensional characteristics are given in Annex 10, Appendix 5 . 
 E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/ Add.66/Rev.4  
 9 2.3.2.  "All-composite  container " means a container made only of composite 
materials with a non-metallic  liner.  
2.3.3.  "Batch of containers " means a maximum of 200 containers of the same type 
produced consecutively on the same production line.  
2.4. "Type of container " means c ontainers which do not differ in respect to the 
following characteristics as specified in Annex  10: 
(a) The trade name(s) or trade mark(s ); 
(b) The shape (cylindrical, special shape) ; 
(c) The openings (plate for accessories/metal ring) ; 
(d) The material ; 
(e) The welding process (in case of metal containers) ; 
(f) The heat treatment (in case of metal containers) ; 
(g) The production line ; 
(h) The nominal wall thickness ; 
(i) The diameter ; 
(j) The height (in case of special containers) . 
2.5. "Accessories fitted to the container " means the following equipment which 
may be either separate or combined:  
(a) 80 per cent stop valve ; 
(b) Level  indicator ; 
(c) Pressure  relief valve ; 
(d) Remotely  controlled service valve with excess flow valve ; 
(e) Fuel pump ; 
(f) Multivalv e; 
(g) Gas-tight housing ; 
(h) Power  supply bushing ; 
(i) Non-return  valve ; 
(j) Pressure  relief device . 
2.5.1.  "80 per cent stop valve " means a device that limits the filling at maximum 
80 per cent of the capacity of the container . 
2.5.2.  "Level indicator " means a device to verify the level of liquid in the container . 
2.5.3.  "Pressure  relief valve (discharge valve) " means a device to limit the pressure 
build -up in the container . 
2.5.3.1.  "Pressure relief device " means a device aimed to protect the container f rom 
burst which can occur in case of fire, by venting the LPG contained . 
2.5.4.  "Remotely controlled service valve with excess flow valve " means a device 
which allows the establishment and interruption of LPG supply to the 
evaporator/pressure regulator; re motely controlled means that the service 
valve is controlled by the electronic control unit; when the engine of the 
vehicle is not running the valve is closed; an excess flow valve means a 
device to limit the flow of LPG . E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
10 2.5.5.  "Fuel pump " means a device to establish the supply of liquid LPG to the engine 
by increasing the pressure of the container with the fuel pump supply pressure . 
2.5.6.  "Multivalve " means a device consisting of all or part of the accessories 
mentioned in paragraphs 2.5.1. to 2.5.3. and  2.5.8.  
2.5.7.  "Gas-tight housing " means a device to protect the accessories and to vent any 
leakages to the open air . 
2.5.8.  Power  supply bushing (fuel pump/actuators/fuel level sensor ). 
2.5.9.  "Non-return valve " means a device to allow the flow of liquid  LPG in one 
direction and to prevent the flow of liquid LPG in the opposite direction . 
2.6. "Vaporizer " means a device intended to vaporize LPG from a liquid to a 
gaseous state . 
2.7. "Pressure regulator " means a device intended for reducing and regulating the 
pressure of liquefied petroleum gas . 
2.8. "Shut-off valve " means a device to cut off the flow of LPG . 
2.9. "Gas-tube pressure relief valve " means a device to prevent the pressure build 
up in the tubes above a pre -set value . 
2.10.  "Gas injection device or injector or gas mixing piece " means a device which 
establishes the liquid or vaporized LPG to enter the engine . 
2.11.  "Gas dosage unit " means a device which meters and/or distributes the gas 
flow to the engine and can be either combined with the gas inj ection device 
or separate.  
2.12.  "Electronic control unit " means a device which controls the LPG demand of 
the engine and cuts off automatically the power to the shut -off valves of the 
LPG  system in case of a broken fuel supply pipe caused by an accident, or by 
stalling of the engine . 
2.13.  "Pressure or temperature sensor " means a device which measures pressure 
or temperature . 
2.14.  "LPG filter unit " means a device which filters the LPG, the filter can be 
integrated in other components . 
2.15.  "Flexible hose s" means hoses for conveying liquefied petroleum gas in either 
a liquid or vapour state at various pressures from one point to another . 
2.16.  "Filling unit " means a device to allow filling of the container; the filling unit 
can be realised by integration i n the 80 per cent stop valve of the container or 
by a remote filling unit at the outside of the vehicle . 
2.17.  "Service coupling " means a coupling in the fuel line between the fuel 
container and the engine.  If a mono -fuel vehicle is out of fuel the engine  can 
be operated by means of a service fuel container which can be coupled to the 
service coupling . 
2.18.  "Fuel rail " means a pipe or duct that connects the fuel injection devices . 
2.19.  "Liquefied petroleum gas (LPG) " means any product essentially compose d of 
the following hydrocarbons:  
Propane , propene (propylene), normal butane, isobutane, isobutylene, butene 
(butylene) and ethane.  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/ Add.66/Rev.4  
 11 European Standard EN 589:1993 specifies requirements and methods of test 
for automotive LPG as marketed and delivered in the  countries of the 
members of CEN (European Committee for Standardization).  
2.20.  "Hose assembly " means an assembly of a flexible hose and couplings . 
Part I - Approval of specific equipment of vehicles of 
categor ies M and N using liquefied petroleum gases 
in their propulsion system  
  3.  Application for approval  
3.1. The application for approval of specific equipment shall be submitted by the 
holder of the trade name or mark or by his duly accredited representative.  
3.2. It shall be accompanied by the under  mentioned documents in triplicate and 
by the following particulars:  
3.2.1.  A detailed description of the type of the specific equipment (as specified in 
Annex  1), 
3.2.2.  A drawing of the specific equipment, sufficiently detailed and on an 
appropriate scale , 
3.2.3.  Verification  of compliance with the specifications prescribed in paragraph 6. 
of this Regulation . 
3.3. At the request of the Technical Service responsible for conducting approval 
tests, samples of the specific equipment shall be provided.  
Suppleme ntary samples shall be supplied upon request.  
  4.  Markings  
4.1. All components submitted for approval shall bear the trade name or mark of 
the manufacturer and the type; and for non -metallic components also the 
manufacturing month and year; this marking shall be clearly legible and 
indelible.  
4.2. All equipment shall have a space large enough to accommodate the approval 
mark including the classification of the component (see Annex 2A) and in 
case of components of Class 0 also the working pressure (WP); th is space 
shall be shown on the drawings referred to in paragraph 3.2.2. above.  
4.3. Every container shall also bear a marking plate, welded to it, with the 
following data clearly legible and indelible:  
(a) A serial number;  
(b) The capacity in litres;  
(c) The marking "LPG";  
(d) Test pressure [kPa];  
(e) The wording: "maximum degree of filling: 80 %";  
(f) Year  and month of approval (e.g. 99/01);  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
12 (g) Approval  mark according to paragraph 5.4;  
(h) The marking "PUMP INSIDE" and a marking identifying the pump 
when a pump is mounted in the container.  
4.4. In addition to provisions of paragraphs 4.1. and 4.2., one of the following 
additional marks shall be used for remotely controlled service valves and 
remotely controlled shut -off valves which comply respectively wit h 
paragraph  4.7. of Annex  3 or with paragraph 1.7. of Annex 7 : 
(a) "H1" 
(b) "H2" 
(c) "H3" 
  5.  Approval  
5.1. If the equipment samples submitted for approval meet the requirements of 
paragraphs 6.1. to 6.13. of this Regulation, approval of the type of equi pment 
shall be granted.  
5.2. An approval number shall be assigned to each type of equipment approved.  
Its first two digits (at present 01 corresponding to the 01 series of 
amendments which entered into force on 13 November 1999) shall indicate 
the series of amendments incorporating the most recent major technical 
amendments made to the Regulation at the time of issue of the approval.  The 
same Contracting Party shall not assign this alphanumeric code to another 
type of equipment.  
5.3. Notice of approval or  of refusal or of extension of approval of an LPG 
equipment type/part pursuant to this Regulation shall be communicated to the 
Parties to the Agreement applying this Regulation, by means of a form 
conforming to the model in Annex 2B to this Regulation.  If  it concerns a 
container, Annex  2B - Appendix shall be added.  
5.4. There shall be affixed, conspicuously and in the space referred to in 
paragraph 4.2. above, to all equipment conforming to a type approved under 
this Regulation, in addition to the mark pre scribed in paragraphs 4.1. and 4.3.  
above , an international approval mark consisting of:  
5.4.1.  A circle surrounding the letter "E" followed by the distinguishing  numb er of 
the country which has granted approval2. 
5.4.2. The number of this Regulation, foll owed by the letter "R", a dash and the 
approval number to the right of the circle prescribed in paragraph 5.4.1.  
above.  This approval number consists of the component type approval 
number which appears on the certificate completed for this type (see 
paragr aph 5.2. above and Annex 2B) preceded by two figures indicating the 
sequence of the latest series of amendments to this Regulation.  
5.5. The approval mark shall be clearly legible and be indelible.  
  
 2 The distinguish numbers  of the Contracting Parties to the 1958 Agreement are reproduced in Annex 3 
to the Consolidated Resolution on the Construction of Vehicles (R.E.3), document 
ECE/ TRANS/WP.29/78/Rev. 3. 
http://www.unece.org/trans/main/wp29/wp29wgs/wp29gen/wp29resolutions.html  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/ Add.66/Rev.4  
 13 5.6. Annex 2A to this Regulation gives examples of the arr angement of the 
aforesaid approval mark.  
5.7. In case of a Class 0 component also the working pressure shall be marked in 
the vicinity of the approval mark mentioned in paragraph 5.4.  above.  
 6. Specifications regarding the various components of 
the LPG equipment  
6.1. General provisions  
The specific equipment of vehicles using LPG in their propulsion system 
shall function in a correct and safe way.  
The materials of the equipment which are in contact with LPG shall be 
compatible with it.  
Those parts of equip ment whose correct and safe functioning is liable to be 
influenced by LPG, high pressure or vibrations has to be submitted to 
relevant test procedures described in the annexes to this Regulation.  In 
particular the provisions of paragraphs 6.2. to 6.13.  below are to be fulfilled.  
The installation of LPG equipment  approved by this Regulation shall comply 
with relevant electromagnetic compatibility (EMC) requirements according 
to Regulation No. 10, 02 series of amendments, or equivalent.  
6.2. Provisions regar ding containers  
The LPG containers shall be type  approved pursuant to the provisions laid 
down in Annex 10 to this Regulation.  
6.3. Provisions regarding accessories fitted to the container  
6.3.1.  The container shall be equipped with the following accessori es, which may 
be either separate or combined (multivalve(s)):  
6.3.1.1.  80 per cent stop valve ; 
6.3.1.2.  Level  indicator ; 
6.3.1.3.  Pressure  relief valve (discharge valve) ; 
6.3.1.4.  Remotely  controlled service valve with excess flow valve . 
6.3.2.  The contain er may be equipped with a gas -tight housing, if necessary.  
6.3.3.  The container may be equipped with a power supply bushing for the sake of 
actuators/LPG fuel pump.  
6.3.4.  The container may be equipped with a LPG fuel pump inside the container.  
6.3.5.  The container may be equipped with a non -return valve.  
6.3.6.  The container shall be equipped with a pressure relief device (PRD).  Devices 
or functions may be approved as PRD being:  
(a) A fusible plug (temperature triggered) (fuse), or  
(b) A pressure relief v alve provide d that it complies to paragraph  6.15.8.3.  
below , or 
(c) A combination of the two above devices, or  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
14 (d) Any other equivalent technical solution  provided that it ensures the 
same degree of performance.  
6.3.7.  The accessories mentioned in paragrap hs 6.3.1. to 6.3.6. above shall be type  
approved pursuant to the provisions laid down in:  
(a) Annex 3 to this Regulation for acce ssories mentioned in 
paragraphs  6.3.1., 6.3.2., 6.3.3. and 6.3.6 . above ; 
(b) Annex 4 to this Regulation for acc essories mention ed in 
paragraph  6.3.4.  above ; 
(c) Annex 7 to this Regulation for acc essories mentioned in 
paragraph  6.3.5.  above.  
6.4. - 6.14. Provisions regarding other components  
The other components, which are shown in Table 1, shall be type approved 
pursuant to the pr ovisions laid down in the annexes which can be determined 
from the table.  
Table 1  
Paragraph  Component  Annex  
6.4. Fuel pump  4 
6.5. Vaporizer1 
Pressure regulator1 6 
6.6. Shut-off valves  
Non-return valves  
Gas-tube pressure relief valves  
Service couplings  7 
6.7. Flexible hoses  8 
6.8. Filling unit  9 
6.9. Gas injection devices/ Gas mixing piece3 
or 
Injectors  11 
6.10.  Gas dosage  units2 12 
6.11.  Pressure sensors  
Temperature sensors  13 
6.12.  Electronic control unit  14 
6.13.  LPG filter units  5 
6.14.  Pressur e relief device  3 
1 Either combined or separate  
2 Only applicable when the gas dosage actuator is not integrated in the gas injection device.  
3 Applicable only when the operating pressure of the gas mixing piece exceeds 20 kPa (Class 2).  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/ Add.66/Rev.4  
 15 6.15.  General des ign rules regarding components  
6.15.1.  Provisions regarding the 80 per cent stop valve  
6.15.1.1.  The connection between the float and the closing unit of the 80 per cent stop 
valve shall not be deformed under normal conditions of use.  
6.15.1.2.  If the 80 p er cent stop valve of the container comprises a float, the latter shall 
withstand an outside pressure of 4,500 kPa.  
6.15.1.3.  The closing unit of the device that limits the filling at 80 per cent +0/ -5 per 
cent of the capacity of the container, for which t he 80 per cent stop valve is 
designed,  shall withstand a pressure of 6,750 kPa.  At the cut -off position, the 
filling rate at a differential pressure of 700 kPa shall not exceed 
500 cm3/minute.  The valve shall  be tested with all the containers on which it  
is intended to be fitted or the manufacturer shall  declare by calculation for 
which container types this valve is suitable.  
6.15.1.4.  When the 80 per cent stop valve does not comprise any float, it shall not be 
possible to continue filling, after closi ng-off, at a rate exceeding 
500 cm3/minute.  
6.15.1.5.  The device shall bear a permanent marking, indicating the container -type for 
which it has been designed, diameter and angle, and if applicable mounting 
indication.  
6.15.2.  Electrical operated devices conta ining LPG shall, in order to prevent in case 
of fracture of the component electric sparks on the surface of fracture:  
(a) Be insulated in a manner that no current is lead through LPG 
containing parts ; 
(b) Have  the electrical system of the device isolated:  
(i) From  the body ; 
(ii) From  the container for the fuel  pump.  
Isolation resistance shall be > 10 M . 
6.15.2.1.  The electrical connections inside the boot and passengers compartment shall 
comply with protection degree class IP 40 according to IEC Standard 6 0529 -
1989+A1:1999.  
6.15.2.2.  All other electrical connections shall comply with protection degree  
class IP 54 according to IEC Standard 60529 -1989+A1:1999.  
6.15.2.3.  The power supply bushing (fuel pump/actuators/fuel level sensor) to establish 
an isolated  and tight electrical connection shall be of a hermetic sealed type.  
6.15.3.  Specific provisions on valves activated by an electric/external (hydraulic, 
pneumatic) power  
6.15.3.1.  In the case of valves activated by an electric/external power (e.g. 80 per c ent 
stop valve, service valve, shut -off valves, non-return  valves, gas tube 
pressure relief valve, service coupling), those valves shall be in "closed" 
position when their power is switched off.  
6.15.3.2.  The power of the fuel pump shall be switched off wh en the electronic control 
unit becomes defective or loses power.  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
16 6.15.4.  Heat exchange medium (compatibility and pressure requirements)  
6.15.4.1.  The materials constituting a device which are in contact with the heat 
exchange medium of a device when operat ing shall be compatible with that 
fluid and shall be designed to withstand a pressure of 200  kPa of the heat 
exchange medium.  The material shall meet the prescriptions laid down in 
Annex  15, paragraph 17.  
6.15.4.2.  The compartment containing the heat exch ange medium of the 
vaporizer/pressure regulator shall be leak proof at a pressure of 200 kPa.  
6.15.5.  A component consisting of both high pressure and low pressure parts shall be 
so designed to prevent a pressure build up in the low pressure part above 
2.25 times the maximum working pressure for which it has been tested.  
Components connected directly to the tank pressure shall be designed for the 
classification pressure of 3,000 kPa.  Venting to the motor compartment or 
outside of the vehicle is not allowe d. 
6.15.6.  Specific provisions to prevent any gas flow  
6.15.6.1.  Pumps of Class 1 shall be so designed that the outlet pressure never exceeds 
3,000  kPa, when there is e.g. blocking of the tubing or not opening of a 
shut-off valve. This can be realized by s witching off the pump or by 
recirculating to the container.  
Pumps of Class 0 shall be so designed that the outlet pressure never exceeds 
the WP of the components downstream of the pump, when there is, e.g. 
blocking of the tubing or not opening of a shut -off valve. This can be realized 
by switching off the pump or by recirculation to the container.  
6.15.6.2.  The pressure regulator/vaporizer shall be so designed as to prevent any gas 
flow when the regulator/vaporizer unit is supplied with LPG at a pressure 
 4,500  kPa when the regulator is not operating.  
6.15.7.  Provisions regarding the gas tube relief valve  
6.15.7.1.  Gas-tube pressure relief valves of Class 1 shall be so designed as to open at a 
pressure of 3,200  ± 100 kPa. 
 Gas-tube pressure relief valves o f Class 0 shall be so designed as to open at a 
pressure of 1.07 WP of the pipe  ± 100 kPa (if needed).  
6.15.7.2.  Gas-tube pressure relief valves of Class 1 shall not have internal leakage up 
to 3,000  kPa. 
 Gas-tube pressure relief valves of Class 0 shall no t have internal leakage up 
to WP of the pipe.  
6.15.8.  Provisions regarding the pressure relief valve (discharge valve)  
6.15.8.1.  The pressure relief valve shall be mounted inside the container or on the 
container, in the area where the fuel is in gaseous s tate. 
6.15.8.2.  The pressure relief valve shall be so designed as to open at a pressure  
of 2,700   100 kPa. 
6.15.8.3.  The flow capacity of the pressure relief valve, determined with compressed 
air at a pressure which is 20 per cent higher than the normal o perating -
pressure shall  be at least  
 Q  10.66  A0.82 E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/ Add.66/Rev.4  
 17 In which:  
Q = flow of air in standard m3/min (100 kPa absolute and temperature of 
15 °C) 
A = exterior surface of the container in m2. 
The flow test results shall  be corrected to standard conditions:  
Air pressure of 100 kPa absolute and temperature of 15  °C. 
When the pressure relief valve is considered as a pressure relief device, the 
flow shall be at least 17.7 standard m3/min.  
6.15.8.4.  The pressure relief valve shall not have internal leakage up to 2, 600 kPa.  
6.15.8.5.  The pressure relief device (fuse) shall be designed to open at a temperature of 
120  10 °C. 
6.15.8.6.  The pressure relief device (fuse) shall be designed to have, when opened, a 
flow capacity of:  
Q  2.73  A 
In which:  
Q = flow of air i n standard m 3/min (100 kPa absolute and temperature of 
15 °C) 
A = exterior surface of the container in m2. 
The flow test shall  be carried out at an upstream air pressure of 200 kPa 
absolute, and at temperature of 15  °C. 
 The flow test results shall  be corr ected to standard conditions:  
Air pressure of 100 kPa absolute, and temperature of 15 °C.  
6.15.8.7.  The pressure relief device shall be mounted on the container in the gaseous 
zone.  
6.15.8.8.  The pressure relief device shall be fitted to the container in s uch a manner 
that it can discharge into the gas tight housing, when its presence is 
prescribed.  
6.15.8.9.  The pressure relief device (fuse) shall be tested according to the provisions 
described in Annex 3, paragraph 7.  
6.15.9.  Power dissipation of the fuel  pump  
At minimum fuel level whereby the engine is still operating the heat build -up 
by the fuel pump(s) should never cause the pressure relief valve to open.  
6.15.10.  Provisions regarding the filling unit  
6.15.10.1.  The filling unit shall be equipped with at least one soft -seated non -return 
valve, and it shall not be dismountable by design.  
6.15.10.2.  The filling unit shall be protected against contamination.  
6.15.10.3.  The design and dimensions of the connecting area of the filling unit shall  
comply with t hose in the figures in Annex 9.  
 The filling unit shown in Figure 5 is only applicable for motor vehicles of 
categories M 2, M 3, N 2, N 3 and M 1 having a maximum total mass  > 3,500  kg. E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
18 6.15.10.4.  The filling unit shown in Figure 4 may also apply for motor veh icles of 
categories M 2, M 3, N 2, N 3 and M 1 having a maximum total mass  > 3,500  kg.3 
6.15.10.5.  The outside filling unit is connected to the container by a hose or pipe.  
6.15.10.6.  Specific provisions regarding the light vehicle Euro filling unit (Annex 9  – 
Figure  3): 
6.15.10.6.1.  The dead volume between the front sealing surface and the front of the non -
return valve shall not exceed 0.1 cm3; 
6.15.10.6.2.  The flow through the connector at a pressure difference of 30  kPa shall be at 
least 60 litres/min, if tes ted with water.  
6.15.10.7.  Specific provisions regarding the heavy -duty vehicle Euro filling unit 
(Annex  9 – Figure 5):  
6.15.10.7.1.  The dead volume between the front sealing surface and the front of the non -
return valve shall not exceed 0.5 cm3; 
6.15.10.7 .2. The flow through the filling unit, with the non -return valve mechanically 
opened, at a pressure difference of 50 kPa shall be at least 200 litres/min, 
when tested with water.  
6.15.10.7.3.  The Euro filling unit shall comply with the impact test as descr ibed in 
Annex  9, paragraph  7.4. 
6.15.11.  Provisions regarding the level indicator  
6.15.11.1.  The device to verify the level of liquid in the container shall be of an indirect 
type (for example magnetic) between the inside and outside of the container.  
If the device to verify the level of liquid in the container is of a direct type, 
the electric power connections should meet IP54 specifications according to 
IEC EN 60529:1997 -06. 
6.15.11.2.  If the level indicator of the container comprises a float, the latte r shall 
withstand an outside pressure of 3,000 kPa.  
6.15.12.  Provisions regarding the gas tight housing of the container.  
6.15.12.1.  The gas -tight housing outlet shall have a total free  cross -section of at least 
450 mm2. 
6.15.12.2.  The gas -tight housing sh all be leak -proof at a pressure of 10 kPa with the 
aperture(s) closed off, maximum allowed leak rate of 100 cm3/h vapour and 
show no permanent deformation.  
6.15.12.3.  The gas -tight housing shall be designed to withstand a pressure of 50 kPa.  
6.15.13.  Provi sions regarding the remotely controlled service valve with excess flow 
valve.  
6.15.13.1.  Provisions regarding the service valve  
6.15.13.1.1.  In case of the service valve is combined with a LPG fuel supply pump, 
identification of the pump shall  be realised by the marking "PUMP INSIDE" 
and the identification of the pump either on the marking plate of the LPG 
  
 3 As defined in the Consolidated Resolution on the Construction of Vehicles (R.E.3.), document 
ECE/TRANS/WP.29/78/Rev. 3, para. 2.  
http://www.unece.org/trans/main/wp29/wp29wgs/wp29gen/wp29resolutions.html  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/ Add.66/Rev.4  
 19 container or on the multivalve if present. Electrical connections inside the 
LPG container shall comply with protection degree class IP 40 according to 
IEC Standard 60529 -1989+A1:1999.  
6.15.13.1.2.  Service valves of Class 1 shall withstand a pressure of 6,750 kPa in the open 
and closed position. Service valves of Class 0 shall withstand a pressure of 
2.25 WP in the open and closed position.  
6.15.13.1.3.  The service valve shall not, at the shut -off position, allow an internal leak 
rate in the flow direction.  There may be leak in the back flow direction.  
6.15.13.2.  Provisions regarding the excess flow valve  
6.15.13.2.1.  The excess flow valve shall be mounted  inside the container.  
6.15.13.2.2.  The excess flow valve shall be designed with a bypass to allow for 
equalization of pressures.  
6.15.13.2.3.  The excess flow valve shall cut off at a pressure difference over the valve of 
90 kPa.  At this pressure differen ce the flow shall not exceed 8,000 cm3/min.  
6.15.13.2.4.  When the excess flow valve is at cut -off position, the flow through the 
by-pass shall not exceed 500 cm3/min. at a differential pressure of 700 kPa.  
7. Modifications of a type of  LPG  equipment and 
extension of approval  
7.1. Every modification of a type of LPG equipment shall be notified to the Type 
Approval Authority  which granted the type approval.  The Type Approval 
Authority may then either:  
7.1.1.  Consider  that the modifications made are unlikely  to have an appreciable 
adverse effect, and that the equipment still complies with the requirements; or  
7.1.2.  Consider  whether retesting will be partial or complete.  
7.2. Confirmation or refusal of approval, specifying the alterations, shall be 
communicat ed by the procedure specified in paragraph 5.3. above to the 
Parties to the Agreement which apply this Regulation.  
7.3. The Type Approval A uthority issuing the extension of approval shall assign a 
series number to each communication form drawn up for such an extension.  
  8.  (Not allocated)  
  9.  Conformity of production  
 The conformity of production procedures shall comply with those set out in 
the Agreement, Appendix 2 (E/ECE/324 -E/ECE/TRANS/505/Rev.2), with 
the following requirements:  
9.1. All equipment approved under this Regulation shall be so manufactured as to 
conform to the type approved by meeting the requirements of paragraph 6. 
above.  
9.2. In order to verify that the requirements of paragraph 9.1. are met, suitable 
controls of production shall be carried out.  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
20 9.3. The minimum requirements for conformity of production control tests set 
forth in Annexes 8, 10 and 15 to this Regulation shall be complied with.  
9.4. The Type Approval Authority which has granted type approval may at any 
time verify the c onformity control methods applied in each production 
facility.  The normal frequency of these verifications shall be once every 
year.  
9.5. Moreover, each container shall be tested at a minimum pressure of 3,000 kPa 
in conformity with the prescriptions of p aragraph 2.3. of Annex 10 to this 
Regulation.  
9.6. Every hose assembly which is applied in the high pressure class (Class 1) 
according to the classification as prescribed in paragraph 2. of this 
Regulation, shall, during half a minute, be subjected to a te st with gas under a 
pressure of 3,000 kPa  by the approval holder . 
9.6.1.  Every hose assembly which is applied in the high pressure class (Class 0) 
according to the classification as prescribed in paragraph 2. of this 
Regulation, shall, during half a minute , be subjected to a test with gas under a 
pressure of the declared WP  by the approval holder . 
9.7. For welded containers at least 1 per 200 containers and one of the remaining 
number has to be subjected to the radiographic examination according to 
Annex  10, paragraph  2.4.1.  
9.8. During production 1 of 200 containers and 1 of the remaining number has to 
be subjected to the above -mentioned mechanical tests as described in 
Annex  10, paragraph 2.1.2.  
  10.  Penalties for non -conformity of production  
10.1.  The a pproval granted in respect of a type of equipment pursuant to this 
Regulation may be withdrawn if the requirements laid down in paragraph 9. 
above are not complied with.  
10.2.  If a Party to the Agreement applying this Regulation withdraws an approval it 
has previously granted, it shall forthwith so notify the other Contracting 
Parties applying this Regulation, by means of a communication form 
conforming to the model in Annex 2B to this Regulation.  
  11. Transitional provisions regarding the various 
compone nts of the LPG  equipment   
11.1.  As from the official date of entry into force of the 01 series of amendments to 
this Regulation, no Contracting Party applying this Regulation shall refuse to 
grant approval under this Regulation as amended by the 01 series of 
amendments.  
11.2.  As from 3 months after the official date of entry into force of the 01 series of 
amendments to this Regulation, Contracting Parties applying this Regulation 
shall grant approvals only if the type of component to be approved meets the 
requirements of this Regulation as amended by the 01 series of amendments.  
11.3.  No Contracting Party applying this Regulation shall refuse a type of 
component approved to the 01 series of amendments to this Regulation.  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/ Add.66/Rev.4  
 21 11.4.  Until 12 months after the date of entry into force of the 01 series of 
amendments to this Regulation, no Contracting Party applying this 
Regulation shall refuse a type of component approved to this Regulation in 
its original form.  
11.5.  Upon the expiration of a period of 12 months after  the date of entry into force 
of the 01 series of amendments, Contracting Parties applying this Regulation 
may refuse the sale of a type of component which does not meet the 
requirements of the 01  series of amendments to this Regulation, unless the 
compone nt is intended as a replacement for fitting on vehicles in use.  
  12.  Production definit ively discontinued  
If the holder of the approval completely ceases to manufacture a type of 
equipment approved in accordance with this Regulation, he shall so inform t he 
Type Approval Authority  which granted the approval.  Upon receiving the 
relevant communication, that Authority shall inform thereof the other 
Contracting Parties to the Agreement applying this Regulation by means of a 
communication form conforming to th e model in Annex 2B to this Regulation.  
  13. Names and addresses of Technical Services 
responsible for conducting approval tests, and of 
Type Approval Authorities  
The Contracting Parties to the Agreement applying this Regulation shall 
communicate to the United Nations Secretariat the names and addresses of 
the Technical Services responsible for conducting approval tests and of the 
Type Approval Authorities  which grant approval and to which forms 
certifying approval or extension or refusal or withdrawal of  approval, issued 
in other countries, are to be sent.  
Part II - Approval of vehicles of categor ies M and N fitted 
with specific equipment for the use of liquefied 
petroleum gases in their propulsion system with 
regard to the installation of such equipment  
  14.  Definitions  
14.1.  For the purposes of Part II of this Regulation:  
14.1.1.  "Approval of a vehicle " means the approval of a vehicle type with regard to 
the installation of its specific equipment for the use of liquefied petroleum 
gases in its propulsi on system;  
14.1.2.  "Vehicle type " means a vehicle or a family of vehicles fitted with specific 
equipment for the use of LPG in its propulsion system, which do not differ 
with respect to the following conditions:  
14.1.2.1.  The manufacturer;  
14.1.2.2.  The type designation established by the manufacturer;  
14.1.2.3.  The essential aspects of design and construction;  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
22 14.1.2.3.1.  Chassis/floor pan (obvious and fundamental differences);  
14.1.2.3.2.  Installation  of the LPG equipment (obvious and fundamental differen ces).  
14.1.3.  "Commanded stop phase " defines the period of time during which the 
combustion engine is switched off automatically for fuel saving and is 
allowed to start again automatically.  
  15.  Application for approval  
15.1.  The application for approval  of a vehicle type with regard to the installation 
of specific equipment for the use of liquefied petroleum gases in its 
propulsion system shall be submitted by the vehicle manufacturer or by his 
duly accredited representative.  
15.2.  It shall be accompanie d by the undermentioned documents in triplicate: 
description of the vehicle comprising all the relevant particulars referred to in 
Annex 1 to this Regulation.  
15.3.  A vehicle representative of the vehicle type to be approved shall be submitted 
to the Techn ical Service conducting the approval tests.  
  16.  Approval  
16.1.  If the vehicle submitted for approval pursuant to this Regulation is provided 
with all the necessary specific equipment for the use of liquefied petroleum 
gases in its propulsion system and meets the requirements of paragraph 17. 
below, approval of that vehicle type shall be granted.  
16.2.  An approval number shall be assigned to each type of vehicle approved.  Its 
first two digits shall indicate the series of amendments incorporating the most  
recent major technical amendments made to the Regulation at the time of 
issue of the approval.  
16.3.  Notice of approval or of refusal or of extension of approval of an LPG 
vehicle type pursuant to this Regulation shall be communicated to the Parties 
to th e Agreement applying this Regulation, by means of a form conforming 
to the model in Annex 2D to this Regulation.  
16.4.  There shall be affixed, conspicuously and in a readily accessible space 
specified on the approval form referred to in paragraph 16.3. abo ve, to every 
vehicle type approved under this Regulation an international approval mark 
consisting of:  
16.4.1.  A circle surrounding the letter "E" followed by the distinguishing number of 
the country which has granted approval .4 
  
 4 The distinguish numbers of the Contracting Par ties to the 1958 Agreement are reproduced in Annex 3 
to the Consolidated Resolution on the Construction of Vehicles (R.E.3), document 
ECE/TRANS/WP.29/78/Rev. 3  
http://www.unece.org/trans/main/wp29/wp29wgs/wp29gen/wp29resolutions.html  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/ Add.66/Rev.4  
 23 16.4.2.  The number of this Regulation, followed by the letter "R", a dash and the 
approval number to the right of the circle prescribed in paragraph 16.4.1.  
above.  
16.5.  If the vehicle conforms to a vehicle approved, under one or more other 
Regulations annexed to the Agreement, in t he country which has granted 
approval under this Regulation, the symbol prescribed in paragraph 16.4.1. 
above need not be repeated; in such case, the Regulation and approval 
numbers and the additional symbols of all the Regulations under which 
approval has  been granted in the country which has granted approval under 
this Regulation shall be placed in vertical columns to the right of the symbol 
prescribed in paragraph 16.4.1.  above.  
16.6.  The approval mark shall be clearly legible and be indelible.  
16.7.  The approval mark shall be placed close to or on the vehicle data plate.  
16.8.  Annex 2C to this Regulation gives examples of the arrangement of the 
aforesaid approval mark.  
  17. Requirements for the installation of specific 
equipment for the use of liquefie d petroleum gases 
in the propulsion system of a vehicle  
17.1.  General  
17.1.1.  The LPG equipment as installed in the vehicle shall function in such a 
manner that the working pressure for which it has been designed and 
approved cannot be exceeded.  
17.1.2.  All parts of the system shall be type approved for individual parts pursuant to 
Part I of this Regulation.  
17.1.2.1.  Notwithstanding the provisions of paragraph 17.1.2.  above , if the LPG 
electronic  control unit is integrated into the engine electronic contro l unit and 
is covered with a vehicle installation type approval according to Part II of this 
Regulation and to Regulation No. 10, no separate type approval of the LPG 
electronic control unit is necessary. The vehicle type approval shall also be 
approved pursuant to the applicable provisions laid down in Annex 14 to this 
Regulation.  
17.1.3.  The materials used in the system shall be suitable for use with LPG.  
17.1.4.  All parts of the system shall be fastened in a proper way.  
17.1.5.  The LPG system  shall show no leaks.  
17.1.6.  The LPG system  shall be installed such that is has the best possible 
protection against damage, such as damage due to moving vehicle 
components, collision, grit or due to the loading or unloading of the vehicle 
or the shifting of those lo ads. 
17.1.7.  No appliances shall be connected to the LPG system  other than those strictly 
required for the proper operation of the engine of the motor vehicle.  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
24 17.1.7.1.  Notwithstanding the provisions of paragraph 17.1.7.  above , motor vehicles of 
categorie s M 2, M 3, N 2, N 3 and M 1 having either a maximum total  
mass > 3500 kg or a body  type SA1 5,  may be fitted with a heating system to 
heat the passenger compartment which is connected to the LPG system . 
17.1.7.2.  The heating system referred to in paragraph 1 7.1.7.1. above shall be 
permitted if, in the view of the Technical Services responsible for conducting 
type approval, the heating system is adequately protected and the required 
operation of the normal LPG system  is not affected.  
17.1.7.3.  Notwithstanding the provisions of paragraph 17.1.7.  above , a mono -fuel 
vehicle without limp -home system may be equipped with a service coupling 
in the LPG system . 
17.1.7.4.  The service coupling referred to in paragraph 17.1.7.3.  above  shall be 
permitted if, in the view of  the Technical Services responsible for conducting 
type approval, the service coupling is adequately protected and the required 
operation of the normal LPG system  is not affected.  The service coupling 
shall  be combined with a separate gas -tight non -return  valve whereby it is 
only possible to operate the engine.  
17.1.7.5.  Mono -fuel vehicles installed with a service coupling shall carry a sticker near 
the service coupling as specified in Annex 17  to this Regulation . 
17.1.8.  Identification of LPG -fuelled M 2 and M 3 category vehicles.  
17.1.8.1.  Vehicles of category M 2 and M 3 shall carry a plate as specified in Annex 16  
to this Regulation . 
17.1.8.2.  The plate shall be installed on the front and rear of the M 2 or M 3 category 
vehicle and on the outside of the door s on the left -hand side for the right hand 
drive vehicles and on the right -hand side for the left hand drive vehicles.  
17.2.  Further requirements  
17.2.1.  No component of the LPG system , including any protective materials which 
form part of such components,  shall project beyond the external surface of 
the vehicle, with the exception of the filling unit if this does not project more 
than 10  mm beyond the nominal line of the body panel.  
17.2.2.  With the exception of the LPG fuel container, in no cross section of the 
vehicle any component of the LPG system , including any protective material 
which forms part of such components, may extend beyond the lower edge of 
the vehicle unless another part of the vehicle, within a radius of 150 mm is 
situated lower.  
17.2.3.  No component of the LPG system  shall be located within 100 mm of the 
exhaust or similar heat source, unless such components are adequately 
shielded against heat.  
17.3.  The LPG system  
17.3.1.  An LPG system  shall contain at least the following components:  
17.3.1.1.  Fuel container;  
  
 5 As defined in the C onsolidated Resolution on the Construction of Vehicles (R.E.3.), document 
ECE/TRANS/WP.29/78/Rev. 3, para. 2.  
http://www.unece.org/trans/main/wp29/wp29wgs/wp29gen/wp29resolutions.html  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/ Add.66/Rev.4  
 25 17.3.1.2.  80 per cent stop valve;  
17.3.1.3.  Level  indicator;  
17.3.1.4.  Pressure  relief valve;  
17.3.1.5.  Remotely  controlled service valve with excess flow valve;  
17.3.1.6.  Pressure regulator and vaporizer, which may be combined ;6 
17.3.1.7.  Remotely  controlled shut -off valve;  
17.3.1.8.  Filling  unit; 
17.3.1.9.  Gas tubes and hoses;  
17.3.1.10.  Gas-carrying connections between the LPG system  components;  
17.3.1.11.  Injector  or gas injection device or gas mixing piece;  
17.3.1.12.  Electronic  control unit;  
17.3.1.13.  Pressure  relief device (fuse).  
17.3.2.  The system may also include the following components : 
17.3.2.1.  Gas-tight housing, covering the accessories fitted to the fuel container;  
17.3.2.2.  Non-return  valve;  
17.3.2.3.  Gas tube pressu re relief valve;  
17.3.2.4.  Gas dosage unit;  
17.3.2.5.  LPG filter unit;  
17.3.2.6.  Pressure  or temperature sensor;  
17.3.2.7.  LPG fuel pump;  
17.3.2.8.  Power  supply bushing for the container (actuators/fuel pump/fuel level 
sensor);  
17.3.2.9.  Service  coupling ( mono -fuel vehicles only & no limp -home system);  
17.3.2.10.  Fuel selection system and electrical system;  
17.3.2.11.  Fuel rail. 
17.3.3.  The container fittings referred to in paragraphs 17.3.1.2. to 17.3.1.5. above 
may be combined.  
17.3.4.  The remotely contro lled shut -off valve referred to in paragraph 17.3.1.7. 
above may be combined with the pressure regulator/vaporizer.  
17.3.5.  Additional components required for the effective operation of the engine may 
be installed in that part of the LPG system  where the p ressure is less than 
20 kPa. 
17.4.  Installation of the fuel container  
17.4.1.  The fuel container shall be permanently installed in the vehicle and shall not 
be installed in the engine compartment.  
  
 6 These components might not be necessary in case of liquid LPG injecti on. E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
26 17.4.2.  The fuel container shall be installed in the correc t position, according to the 
instructions from the container manufacturer.  
17.4.3.  The fuel container shall be installed such that there is no metal to metal 
contact, other than at the permanent fixing points of the container.  
17.4.4.  The fuel container sh all have permanent fixing points to secure it to the 
motor vehicle or the container shall be secured to the motor vehicle by a 
container frame and container straps.  
17.4.5.  When the vehicle is ready for use the fuel container shall not be less than 
200 mm above the road surface.  
17.4.5.1.  The provisions of paragraph 17.4.5. above shall not apply if the container is 
adequately protected, at the front and the sides and no part of the container is 
located lower than this protective structure.  
17.4.6.  The fuel container(s) shall  be mounted and fixed so that the following 
accelerations can be absorbed (without damage occurring) when the 
containers are full:  
 Vehicles of categories M 1 and N 1: 
 (a) 20 g in the direction of travel ; 
 (b) 8 g horizontally perpendicula r to the direction of travel . 
 Vehicles of categories M 2 and N 2: 
 (a) 10 g in the direction of travel ; 
 (b) 5 g horizontally perpendicular to the direction of travel . 
 Vehicles of categories M 3 and N 3: 
 (a) 6.6 g in the direction of travel ; 
 (b) 5 g horizo ntally perpendicular to the direction of travel . 
A calculation method can be used instead of practical testing if its 
equivalence can be demonstrated by the applicant for approval to the 
satisfaction of the Technical Service . 
17.5.  Further requirements to the fuel container  
17.5.1.  If more than one LPG container is connected to a single delivery tube each 
container shall be fitted with a non -return valve installed downstream of the 
remotely controlled service valve and a tube pressure relief valve shall be  
installed in the delivery tube, downstream of the non -return valve.  An 
adequate filter system has to be placed upstream of the non -return valve(s) to 
prevent fouling of the non -return valve(s).  
17.5.2.  A non -return valve and tube pressure relief valve s hall not be required if the 
backflow pressure of the remotely controlled service valve in the closed 
position exceeds 500 kPa.  
In that case the control of the remotely controlled service valves shall be 
constructed such that it is impossible for more than one remotely controlled 
valve to be open at any time.  The overlap time to allow switching is limited 
to two minutes.  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/ Add.66/Rev.4  
 27 17.6.  Accessories to the fuel container  
17.6.1.  Remotely controlled service valve with excess flow valve on the container  
17.6.1.1.  The remotely controlled service valve with excess flow valve shall be 
installed directly on the fuel container, without any intervening fittings.  
17.6.1.2.  The remotely controlled service valve with excess flow valve shall be 
controlled such that it is automat ically closed when the engine is not running, 
irrespective of the position of the ignition switch, and shall remain closed as 
long as the engine is not running.  
17.6.1.3.  Notwithstanding the provision of paragraph 17.6.1.2. above , in case of liquid 
injecti on systems, if a fuel recirculation is required to purge the system from 
gas bubbles (vapour lock), it is allowed to keep the remotely controlled 
service valve with excess flow valve open for a period not longer than 
10 seconds before starting the engine i n LPG running mode.  
17.6.1.4.  Notwithstanding the provisions of paragraph 17.6.1.2.  above , the remotely 
controlled service valve may stay in an open position during the commanded 
stop phases.  
17.6.1.5.  If the remotely controlled service valve is  closed dur ing commanded stop 
phases, the valve shall comply with paragraph 4.7. of Annex 3.  
17.6.2.  Spring -loaded pressure relief valve in the container  
17.6.2.1.  The spring -loaded pressure relief valve shall be installed in the fuel container 
in such a manner that  it is connected to the vapour space and can discharge to 
the surrounding atmosphere.  The spring -loaded pressure relief valve may 
discharge into the gas -tight housing if that gas -tight housing fulfils the 
requirements of paragraph 17.6.5.  below.  
17.6.3.  80 per cent stop valve  
17.6.3.1.  The automatic filling level limiter shall be suitable for the fuel container it is 
fitted to and shall be installed in the appropriate position to ensure that the 
container cannot be filled to more than 80 per cent.  
17.6.4.  Level indicator  
17.6.4.1.  The level indicator shall be suitable for the fuel container it is fitted to and 
shall be installed in the appropriate position.  
17.6.5.  Gas-tight housing on the container  
17.6.5.1.  A gas -tight housing over the container fittin gs, which fulfils the requirements 
of paragraphs 17.6.5.2. to 17.6.5.5. below shall be fitted to the fuel container, 
unless the container is installed outside the vehicle and the container fittings 
are protected against dirt and water.  
17.6.5.2.  The gas -tight housing shall be in open connection with the atmosphere, 
where necessary through a connecting hose and a lead -through.  
17.6.5.3.  The ventilation opening of the gas -tight housing shall point downwards at 
the point of exit from the motor vehicle.  Howeve r, it shall not discharge 
into a wheel arch, nor shall it be aimed at a heat source such as the 
exhaust.  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
28 17.6.5.4.  Any connecting hose and lead -through in the bottom of the bodywork of the 
motor vehicle for ventilation of the gas -tight housing shall have a  minimum 
clear opening of 450 mm2.  If a gas tube, other tube or any electrical wiring is 
installed in the connecting hose and lead -through, the clear opening shall also 
be at least 450 mm2. 
17.6.5.5.  The gas -tight housing and connecting hoses shall be gas -tight at a pressure of 
10 kPa with the apertures closed off, and show no permanent deformation, 
with a maximum allowed leak rate of 100 cm3/h. 
17.6.5.6.  The connecting hose shall be secured in a proper way to the gas -tight housing 
and the lead -through to ensure that a gas -tight joint is formed.  
17.7.  Gas tubes and gas hoses  
17.7.1.  Gas tubes shall be made of seamless material: either copper or stainless steel 
or steel with corrosion -resistant coating.  
17.7.2.  If seamless copper is used the tube shall be  protected by a rubber or plastic 
sleeve.  
17.7.3.  The outer diameter of gas tubes made of copper shall not exceed 12 mm 
with a wall thickness of at least 0.8 mm, gas tubes from steel and 
stainless steel shall not exceed 25  mm with, for gas services, an 
appropriate wall thickness.  
17.7.4.  The gas tube may be made of a non -metallic material if the tube fulfils the 
requirements of this Regulation, paragraph 6.7.  
17.7.5.  The gas tube may be replaced by a gas hose if this hose fulfils the 
requirement of this R egulation, paragraph 6.7.  
17.7.6.  Gas tubes, other than non -metallic gas tubes, shall be secured such that they 
shall not be subjected to vibration or stresses.  
17.7.7.  Gas hoses and non -metallic gas tubes shall be secured such that they shall not 
be subje cted to stresses.  
17.7.8.  At the fixing point the gas tube or hose shall be fitted with a protective 
material.  
17.7.9.  Gas tubes or hoses shall not be located at jacking points.  
17.7.10.  At passages the gas tubes or hoses, whether or not fitted with a prot ective 
sleeve, shall be fitted with protective material.  
17.8.  Gas connections between the components of the LPG system  
17.8.1.  Soldered or welded joints and bite -type compression joints are not permitted. 
Soldering or welding can be permitted for connecti ng the individual parts of 
detachable couplings to the gas tube or component.  
17.8.2.  Gas tubes shall only be connected by compatible fittings with regard to 
corrosion.  
17.8.3.  Stainless steel tubes shall only be joined by stainless steel fittings.  
17.8.4.  Distributing -blocks shall be made of corrosion -resistant material.  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/ Add.66/Rev.4  
 29 17.8.5.  Gas tubes shall be connected by appropriate joints, for example, two -part 
compression joints in steel tubes and joints with olives tapered on both 
sides or two flanges in copper tu bes. Gas tubes shall be connected with 
appropriate connections.  Under no circumstances couplings may be used 
whereby the tube will be damaged.  The burst pressure of the mounted 
couplings shall be the same or higher as specified for the tube.  
17.8.6.  The number of joints shall be limited to a minimum.  
17.8.7.  Any joints shall be made in locations where access is possible for inspection.  
17.8.8.  In a passenger compartment or enclosed luggage compartment the gas tube or 
hose shall be no longer than reasonabl y required; this provision is fulfilled 
when the gas tube or hose does not extend further than from the fuel 
container to the side of vehicle.  
17.8.8.1.  There shall be no gas -conveying connections in the passenger compartment 
or enclosed luggage compartme nt with the exception of:  
(a) The connections on the gas -tight housing; and  
(b) The connection between the gas tube or hose and the filling unit if this 
connection is fitted with a sleeve which is resistant against LPG and 
any leakin g gas will be discharge d directly into the atmosphere.  
17.8.8.2.  The provisions of paragraph 17.8.8. and paragraph 17.8.8.1. above  shall not 
apply for M 2 or M 3 category vehicles if the gas tubes or hoses and 
connections are fitted with a sleeve which is resistant against LPG and  which 
has an open connection to the atmosphere.  The open end of the sleeve or 
ducting shall be situated at the lowest point.  
17.9.  Remotely controlled shut -off valve  
17.9.1.  A remotely controlled shut -off valve shall be installed in the gas tube from 
the LPG container to the pressure regulator/vaporizer, as close as possible to 
the pressure regulator/vaporizer.  
17.9.2.  The remotely controlled shut -off valve may be incorporated into the pressure 
regulator/vaporizer.  
17.9.3.  Notwithstanding the provisions o f paragraph 17.9.1.  above , the remotely 
controlled shut -off valve may be installed at a location in the engine bay 
specified by the manufacturer of the LPG system  if a fuel return system is 
provided between the pressure regulator and the LPG container.  
17.9.4. The remotely controlled shut -off valve shall be installed such that the fuel 
supply is cut off when the engine is not running or, if the vehicle is also 
equipped with another fuel system, when the other fuel is selected.  A delay 
of 2 seconds is permi tted for diagnostic purposes.  
17.9.5.  Notwithstanding the provision of paragraph 17.9.4.  above , in case of liquid 
injection systems, if a fuel recirculation is required to purge the system from 
gas bubbles (vapour lock), it is allowed to keep the remotely controlled shut -
off valve open for a period not longer than 10 seconds before starting the 
engine in LPG running mode and during the fuel switching -over.  
17.9.6.  Notwithstanding the provisions of paragraph 17.9.4.  above , the remotely 
controlled shut -off va lve may stay in an open position during the commanded 
stop phases.  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
30 17.9.7.  If the remotely controlled shut -off valve is closed during commanded stop 
phases,  the valve shall comply with paragraph 1.7. of Annex 7. 17.10.  Filling 
unit 
17.10.1.  The filling unit  shall be secured against rotation and shall be protected 
against dirt and water.  
17.10.2.  When the LPG container is installed in the passenger compartment or an 
enclosed (luggage) compartment, the filling unit shall be located at the 
outside of the vehicl e. 
17.11.  Fuel selection system and electrical installation  
17.11.1.  The electrical components of the LPG system  shall be protected against 
overloads and at least one separate fuse shall be provided in the supply cable.  
17.11.1.1.  The fuse shall be install ed in a known location where it can be reached 
without the use of tools.  
17.11.2.  The electrical power to LPG system  components which also carry gas may 
not be conducted by a gas tube.  
17.11.3.  All electrical components installed in a part of the LPG syste m where the 
pressure exceeds 20 kPa shall be connected and insulated in a manner that no 
current is led through LPG containing parts.  
17.11.4.  Electrical cables shall be adequately protected against damage.  The 
electrical connections inside the boot and p assengers compartment shall 
comply with protection degree class IP 40 according to IEC Standard 
60529 -1989+A1:1999. All other electrical connections shall comply with 
protection degree class IP 54 according to IEC Standard 60529 -
1989+A1:1999.   
17.11.5.  Vehicles with more than one fuel system shall have a fuel selection system  
17.11. 6. The electrical connections and components in the gas -tight housing shall be 
constructed such that no sparks are generated.  
17.12.  Pressure relief device  
17.12.1.  The pressure relief device shall be fitted to the fuel container(s) in such a 
manner that it can discharge into the gas tight housing, when its presence is 
prescribed, if that gas tight housing fulfils the requirements of 
paragraph  17.6.5.  above.  
  18.  Conformity of p roduction  
The conformity of production procedures shall comply with those set out in 
the Agreement, Appendix 2 (E/ECE/324 -E/ECE/TRANS/505/Rev.2) with the 
following requirements:  
18.1.  All vehicles approved under this Regulation shall be so manufactured as to 
conform to the type approved by meeting the requirements of paragraph  17. 
above.  
18.2.  In order to verify that the requirements of paragraph 18.1. above are met, 
suitable controls of the production shall be carried out.  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/ Add.66/Rev.4  
 31 18.3.  The Type Approval Authority  which has granted type approval may at any 
time verify the conformity control methods applied in each production 
facility.  The normal frequency of these verifications shall be once every 
year.  
  19.  Penalties for non -conformity of production  
19.1.  The a pproval granted in respect of a type of vehicle pursuant to this 
Regulation may be withdrawn if the requirements laid down in paragraph 18. 
above are not complied with.  
19.2.  If a Contracting Party to the Agreement applying this Regulation withdraws 
an app roval it has previously granted, it shall forthwith so notify the other 
Contracting Parties applying this Regulation, by means of a communication 
form conforming to the model in Annex 2D to this Regulation.  
  20. Modification and extension of approval of a vehicle 
type 
20.1.  Every modification of the installation of the specific equipment for the use of 
liquefied petroleum gases in the propulsion system of the vehicle shall be 
notified to the Type Approval Authority  which approved the vehicle type.  
That Type Approval Authority  may then either:  
20.1.1.  Consider that the modifications made are unlikely to have an appreciably 
adverse effect and that in any case the vehicle still complies with the 
requirements; or  
20.1.2.  Require a further test report from the  Technical Service responsible for 
conducting the tests.  
20.2.  Confirmation or refusal of approval, specifying the alteration, shall be 
communicated by the procedure specified in paragraph 16.3. above to the 
Parties to the Agreement applying this Regulatio n. 
20.3.  The Type Approval Authority  issuing the extension of approval shall assign a 
series number for such an extension and inform thereof the other Contracting 
Parties to the 1958  Agreement applying this Regulation by means of a 
communication form confo rming to the model in Annex 2D to this 
Regulation.  
  21.  Production definit ively discontinued  
If the holder of the approval completely ceases to manufacture a type of 
vehicle approved in accordance with this Regulation, he shall so inform the 
Type Approva l Authority which granted the approval.  Upon receiving the 
relevant communication, that Authority shall inform thereof the other 
Contracting Parties to the Agreement applying this Regulation by means of a 
communication form conforming to the model in Anne x 2D to this 
Regulation.  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
32   22. Transitional provisions regarding the installation of 
various components of the LPG equipment and the 
type approval of a vehicle fitted with specific 
equipment for the use of liquefied petroleum gas in 
its propulsion system with regard to the installation 
of such equipment  
22.1.  As from the official date of entry into force of the 01 series of amendments to 
this Regulation, no Contracting Party applying this Regulation shall refuse to 
grant approval under this Regulation as amended by the 01 series of 
amendments.  
22.2.  As from the official date of entry into force of the 01 series of amendments to 
this Regulation, no Contracting Party applying this Regulation shall prohibit 
the fitting on a vehicle and the use as first equipm ent of a component 
approved under this Regulation as amended by the 01 series of amendments.  
22.3.  During the period of 12 months after the date of entry into force of the 
01 series of amendments to this Regulation, Contracting Parties applying this 
Regula tion may allow the use of as first equipment of a type of component 
approved to this Regulation in its original form, when fitted on a vehicle 
transformed for LPG propulsion.  
22.4.  Upon the expiration of a period of 12 months after the date of entry into f orce 
of the 01 series of amendments to this Regulation, Contracting Parties 
applying this Regulation shall prohibit the use as first equipment of a 
component which does not meet the requirements of this Regulation as 
amended by the 01 series of amendments,  when fitted on a vehicle 
transformed for LPG propulsion.  
22.5.  Upon the expiration of a period of 12 months after the date of entry into force 
of the 01 series of amendments to this Regulation, Contracting Parties 
applying this Regulation may refuse first  National Registration (first entry 
into service) of a vehicle which does not meet the requirements of this 
Regulation as amended by the 01 series of amendments.  
 23. Names and addresses of Technical Services 
responsible for conducting approval tests, and of 
Type Approval Authorities  
The Parties to the Agreement applying this Regulation shall communicate to 
the United Nations Secretariat the names and addresses of the Technical 
Services responsible for conducting approval tests and of the Type Approval 
Auth orities  which grant approval and to which forms certifying approval or 
extension or refusal or withdrawal of approval, issued in other countries, are 
to be sent.  
 E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/R ev.4 
Annex 1  
 
33 Annex 1  
  Essential characteristics of the vehicle, engine and  LPG  
related equipment  
Descrip tion of the vehicle(s)  
Make:    ................................ ................................ ................................ ................................ ...  
Type(s) :  ................................ ................................ ................................ ................................ ...  
Name a nd address of the manufacturer :  ................................ ................................ ..................   
1. Description of the engine(s)  
1.1. Manufacturer :  ................................ ................................ ..............................   
1.1.1.  Manufacturer's engine code(s) (as marked on the engine  or other means of 
identification) : ................................ ................................ ..............................   
1.2. Internal combust ion engine  
1.2.1. -1.2.4.4.  Not used  
1.2.4.5.  Description of the LPG fuelling equipment:  
1.2.4.5.1.  System description:  ................................ ................................ ......................   
1.2.4.5.1.1.  Make(s):  ................................ ................................ ................................ .......  
1.2.4.5.1.2.  Type(s):   ................................ ................................ ................................ .......  
1.2.4.5.1.3.  Drawings/flow charts of the installation in the vehicle(s):  ...........................   
1.2.4.5.2.  Vapo rizer/pressure regulator(s):  
1.2.4.5.2.1.  Make(s):  ................................ ................................ ................................ .......  
1.2.4.5.2.2.  Type(s):   ................................ ................................ ................................ .......  
1.2.4.5.2.3.  Certificatio n number:  ................................ ................................ ...................   
1.2.4.5.2.4.  Not used 
1.2.4.5.2.5.  Drawings:   ................................ ................................ ................................ ....  
1.2.4.5.2.6.  Number of main adjustment points : ................................ .............................   
1.2.4.5.2.7.  Description of principle of adjustm ent through main adjustment points:  ....  
  ................................ ................................ ................................ .....................   
1.2.4.5.2.8.  Number of idle adjustment points:  ................................ ...............................   
1.2.4.5.2.9.  Description of principles of adjustment through idle adjustment points:  .....  
  ................................ ................................ ................................ .....................   
1.2.4.5.2.10.  Other adjustment possibilities: if so and which (description an d 
drawings):  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 1  
 
34 1.2.4.5.2.11.  Operating pressure(s) :1  ................................ ................................ ..........  kPa 
1.2.4.5.3.  Mixing piece: yes/no2 
1.2.4.5. 3.1. Number:   ................................ ................................ ................................ ......  
1.2.4.5.3.2.  Make(s):   ................................ ................................ ................................ ......  
1.2.4.5.3.3.  Type(s):   ................................ ................................ ................................ .......  
1.2.4.5.3.4.  Drawings:   ................................ ................................ ................................ ....  
1.2.4.5.3.5.  Place of installation (include drawing(s)):  ................................ ...................   
1.2.4.5. 3.6. Adjustment possibilities:  ................................ ................................ ..............   
1.2.4.5. 3.7. Operating pressure(s) :1 ................................ ................................ ...........  kPa 
1.2.4.5.4.  Gas dosage unit: yes/ no2 
1.2.4.5.4.1.  Number:   ................................ ................................ ................................ ......  
1.2.4.5.4.2.  Make(s):   ................................ ................................ ................................ ......  
1.2.4.5.4.3.  Type(s):   ................................ ................................ ................................ .......  
1.2.4.5.4.4.  Drawings:   ................................ ................................ ................................ ....  
1.2.4.5.4.5.  Place of installation (include drawing(s)):  ................................ ...................   
1.2.4.5.4.6.  Adjustment possibilities (description)  
1.2.4.5.4.7  Operating pressure(s) :1 ................................ ................................ ...........  kPa 
1.2.4.5.5.  Gas injection device (s) or Injector(s): yes/ no2 
1.2.4.5.5.1.  Make(s):   ................................ ................................ ................................ ......  
1.2.4.5.5.2.  Type(s):   ................................ ................................ ................................ .......  
1.2.4.5.5.3.  (Not used)  
1.2.4.5.5.4.  Operating pressur e(s):1  ................................ ................................ ..........  kPa 
1.2.4.5.5.5.  Drawings of installation:  ................................ ................................ ........  kPa 
1.2.4.5.6.  Electronic Control Unit LPG -fuelling:  
1.2.4.5.6.1.  Make(s):   ................................ ................................ ................................ ......  
1.2.4.5.6.2.  Type(s):   ................................ ................................ ................................ .......  
1.2.4.5.6.3.  Place of installation :  ................................ ................................ ....................   
1.2.4.5.6.4.  Adjustment possibilities:  ................................ ................................ ..............   
1.2.4.5.7.  LPG container:  
1.2.4.5.7.1.  Make(s):   ................................ ................................ ................................ ......  
1.2.4.5.7.2.  Type(s) (include drawings):   ................................ ................................ ........   
1.2.4.5.7.3  Number of containers:   ................................ ................................ .................   
  
 1 Specify the tolerance.   
 2 Strike out what does not apply.   E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 1  
 
 35 1.2.4.5.7.4.  Capacity:   ................................ ................................ .............................  litres  
1.2.4.5.7.5.  LPG fuel pump in container: yes/ no2  
1.2.4.5.7.6.  (Not used)  
1.2.4.5.7.7.  Drawings of the installation of the  container:   ................................ .............   
1.2.4.5.8.  LPG container accessories  
1.2.4.5.8.1.  80 per cent  stop valve:  
1.2.4.5.8.1.1.  Make(s):   ................................ ................................ ................................ ......  
1.2.4.5.8.1.2.  Type(s):   ................................ ................................ ................................ .......  
1.2.4.5.8.1.3.  Operating principle: float/ other2 (include description or drawings) : ............   
  ................................ ................................ ................................ .....................   
1.2.4.5.8.2.  Level indica tor:  
1.2.4.5.8.2.1.  Make(s):   ................................ ................................ ................................ ......  
1.2.4.5.8.2.2.  Type(s):   ................................ ................................ ................................ .......  
1.2.4.5.8.2.3.  Operating principle: float/ other2 (include description or  drawings) : ............   
  ................................ ................................ ................................ .....................   
1.2.4.5.8.3.  Pressure relief valve (discharge valve):  
1.2.4.5.8.3.1.  Make(s):   ................................ ................................ ................................ ......  
1.2.4.5.8.3.2.  Type(s):   ................................ ................................ ................................ .......  
1.2.4.5.8.3.3.  Flow rate in standard conditions : ................................ ................................ .  
1.2.4.5.8.4.  Pressure relief device  
1.2.4.5.8.4.1.  Make(s) :  ................................ ................................ ................................ ......  
1.2.4.5.8.4.2.  Type(s) :  ................................ ................................ ................................ .......  
1.2.4.5.8.4.3.  Description and drawings :  ................................ ................................ ...........   
1.2.4.5.8.4.4.  Operating temperature : ................................ ................................ ................   
1.2.4.5.8.4.5.  Material :  ................................ ................................ ................................ ......  
1.2.4.5.8.4 .6. Flow rate in standard condition :  ................................ ................................ ..  
1.2.4.5.8.5.  Remotely controlled service valve with excess flow valve:  
1.2.4.5.8.5.1.  Make(s):   ................................ ................................ ................................ ......  
1.2.4.5.8.5.2.  Type(s):   ................................ ................................ ................................ .......  
1.2.4.5.8.6.  Multivalve: yes/ no2  
1.2.4.5.8.6.1.  Make(s):   ................................ ................................ ................................ ......  
1.2.4.5.8.6.2.  Type(s):   ................................ ................................ ................................ .......  
1.2.4.5. 8.6.3.  Multivalve description (include drawings) :  ................................ ................   
1.2.4.5.8.7.  Gas-tight housing:  
1.2.4.5.8.7.1.  Make(s):   ................................ ................................ ................................ ......  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 1  
 
36 1.2.4.5.8.7.2.  Type(s):   ................................ ................................ ................................ .......  
1.2.4.5.8.8.  Power supply bushing (fuel pump/actuators):  
1.2.4.5.8.8.1.  Make(s):   ................................ ................................ ................................ ......  
1.2.4.5.8.8.2.  Type(s):   ................................ ................................ ................................ .......  
1.2.4.5.8.8 .3. Drawings:   ................................ ................................ ................................ ....  
1.2.4.5.9.  Fuel pump (LPG): yes/ no2  
1.2.4.5.9.1.  Make(s):   ................................ ................................ ................................ ......  
1.2.4.5.9.2.  Type(s):   ................................ ................................ ................................ .......  
1.2.4.5.9.3.  Pump mounted in LPG container: yes/ no2  
1.2.4.5.9.4.  Operating pressure(s) :1  ................................ ................................ ..........  kPa 
1.2.4.5.10.  Shut-off valve/Non -return valve/Gas tube pressur e relief valve:  
yes/no2 
1.2.4.5.10.1.  Make(s):   ................................ ................................ ................................ ......  
1.2.4.5.10.2.  Type(s):   ................................ ................................ ................................ .......  
1.2.4.5.10.3.  Description and drawings:   ................................ ................................ ...........   
1.2.4.5.10.4.  Operating pressure(s) :1  ................................ ................................ ..........  kPa 
1.2.4.5.11.  Remote filling unit :2  
1.2.4.5.11.1.  Make(s):   ................................ ................................ ................................ ......  
1.2.4.5.11.2.  Type(s):   ................................ ................................ ................................ .......  
1.2.4.5.11.3 . Description and drawings:   ................................ ................................ ...........   
1.2.4.5.12.  Flexible fuel hose(s)/pipes:  
1.2.4.5.12.1.  Make(s):   ................................ ................................ ................................ ......  
1.2.4.5.12.2.  Type(s):   ................................ ................................ ................................ .......  
1.2.4.5.12.3.  Description:   ................................ ................................ ................................ .  
1.2.4.5.12.4.  Operating pressure(s) :1  ................................ ................................ ..........  kPa 
1.2.4.5.13.  Pressure and Temperature sensor(s) :2  
1.2.4.5.13.1.  Make(s):   ................................ ................................ ................................ ......  
1.2.4.5.13.2.  Type(s):   ................................ ................................ ................................ .......  
1.2.4.5.13.3.  Description:   ................................ ................................ ................................ .  
1.2.4.5.13.4.  Operating pressure(s) :1  ................................ ................................ ..........  kPa 
1.2.4.5.14.  LPG filter unit(s) :2  
1.2.4.5.14.1.  Make(s):   ................................ ................................ ................................ ......  
1.2.4.5.14.2.  Type(s):   ................................ ................................ ................................ .......  
1.2.4.5.14.3.  Description:   ................................ ................................ ................................ .  
1.2.4.5.14.4.  Operating pressure(s ):1  ................................ ................................ ..........  kPa E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 1  
 
 37 1.2.4.5.15.  Service coupling(s) (mono -fuel vehicles without limp -home system) :2  
1.2.4.5.15.1.  Make(s):   ................................ ................................ ................................ ......  
1.2.4.5.15.2.  Type(s):   ................................ ................................ ................................ .......  
1.2.4.5.15.3.  Description and drawings of installation:   ................................ ....................   
1.2.4.5.16.  Connection to LPG system for heating system:  yes/no2 
1.2.4.5.16.1.  Make(s):   ................................ ................................ ................................ ......  
1.2.4.5.16.2.  Type(s):   ................................ ................................ ................................ .......  
1.2.4.5.16.3.  Description and drawings of installation:   ................................ ....................   
1.2.4.5.17.  Fuel rail :2  
1.2.4.5.17.1.  Make(s):   ................................ ................................ ................................ ......  
1.2.4.5.17.2.  Type(s):   ................................ ................................ ................................ .......  
1.2.4.5.17.3.  Description and drawings of installation:   ................................ ....................   
1.2.4.5 .17.4.  Operating pressure(s) :1  ................................ ................................ ..........  kPa 
1.2.4.5.18.  Multi -component :2  
1.2.4.5.18.1.  Make(s):  ................................ ................................ ................................ ......  
1.2.4.5.18.2.  Type(s):   ................................ ................................ ................................ .......  
1.2.4.5.18.3.  Description and drawings:  ................................ ................................ ...........   
1.2.4.5.18.4.  Operating pressure(s) :1  ................................ ................................ ..........  kPa 
1.2.4.5. 19. Further documentation:  
1.2.4.5. 19.1. Desc ription of the LPG equipment  and the physical safeguarding of the 
catalyst at switch -over from petrol to LPG or back  
1.2.4.5. 19.2. System lay -out (electrical connections, vacuum connections 
compensation hoses, etc.)  
1.2.4.5. 19.3. Drawing of the symbol:   ................................ ................................ ...............   
1.2.4.5. 19.4. Adjustment data:   ................................ ................................ .........................   
1.2.4.5. 19.5. Certificate of the vehicle on petrol, if already granted:   ...............................   
1.2.5.  Cooling system: (liquid/air)2 
1.2.5.1.  System description/drawings with regard to the LPG equipment  
 E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 2A  
38 Annex 2A  
  Arrangement of the LPG  equipme nt type  approval mark  
(See paragraph 5. 4. of this Regulation)  
 
  
 
67 R—012439  CLASS #1 
 
 
a  5 mm  
 
 1  Class 0, 1, 2, 2A or 3  
 
The above approval mark affixed to the LPG equipment shows that 
this equipment has been approved in the Netherlands (E  4), pursu ant to 
Regulation No. 67 under approval number 012439.  The first two digits of the 
approval number indicate that the approval was granted in accordance with 
the requirements of Regulation No. 67 as amended by the 01 series of 
amendments.  
 E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 2B  
39 Annex 2B  
  Commu nication  
(Maximum format: A4 (210 x 297 mm))   
 
 
1 
Concerning :2 Approval granted  
Approval extended  
Approval refused  
Approval withdrawn  
Production definit ively discontinued  
of a type of LPG equipment pursuant to Regulation No. 67  
Approval No.: ........... ......... ..................   Extension No.: ....... .............................. .. 
1. LPG equipment considered :2  
 Container including the configuration of accessories fitted to the container, as laid 
down in Appendix  1 to this annex.  
 80 per cent stop val ve 
 Level indicator  
 Pressure relief valve (discharge valve)  
 Pressure relief device  
 Remotely controlled service valve with excess flow valve  
 Multivalve, including the following accessories:  ................................ ..........................   
  ................................ ................................ ................................ ................................ ......  
 Gas-tight housing  
 Power supply bushing (pump/actuators)  
 Fuel pump  
 Vaporizer/pressure regulator  
 Shut-off valve  
 Non-return valve  
  
 1 Distinguishing number of the country which has granted/extended/refused/withdrawn approval (see 
approval provisions in the Regulation.)  
 2 Strike out what does not apply.  issued by:  Name of administration:  
 .................. .......................  
 ............... ......... .................  
 ............................ .............  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 2B  
 
40  Gas-tube pressure relief valve  
 Service coupling  
 Flexible hose  
 Remote filling unit  
 Gas injection device or injector  
 Fuel rail  
 Gas dosage unit  
 Gas mixing piece  
 Electronic cont rol unit  
 Pressure/temperature sensor  
 LPG filter unit  
 Multi -component  
2. Trade name or mark :  ................................ ................................ ................................ ....  
3. Manufacturer's name and address : ................................ ................................ ................   
4. If applicable, name and address of manufacturer's representative : ...............................   
5. Submitted for approval on :  ................................ ................................ ..........................   
6. Technical Service  responsible for conducting approval tests : ................................ ......  
7. Date of report issued by that Service:   ................................ ................................ ..........   
8. No. of report issued by that Service :  ................................ ................................ ............   
9. Approval gra nted/refused/extended/withdrawn :2  ................................ .........................   
10. Reason(s) of extension (if applicable) : ................................ ................................ .........   
11. Place :  ................................ ................................ ................................ ............................   
12. Date :  ................................ ................................ ................................ .............................   
13. Signature :  ................................ ................................ ................................ .....................   
14. The documents filed with the application or extension of approval can be obtained 
upon request.  
 E/ECE/324/Rev .1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 2B - Appendix  
41 Annex 2B - Appendix  
  Containers  only 
1. Container characteristics from the parent container (configuration 00):  
(a) Trade name or mark:   ................................ ................................ .............   
(b) Shape:   ................................ ................................ ................................ ....  
(c) Material:  ................................ ................................ ................................ .  
(d) Openings:  ................................ ................................ ............  see drawing  
(e) Wall thickness :  ................................ ................................ ................  mm 
(f) Diameter (cylindrical container):   ................................ .....................  mm 
(g) Height (special container shape):   ................................ ....................  mm 
(h) External surface:   ................................ ................................ ..............  cm2 
(i) Configuration of accessories fitted to container: see Table 1 . 
Table 1  
No. Item Type  Approval No.  Extension No.  
a 80 per cent stop valve     
b Level indicator     
c Pressure relief valve     
d Remotely controlled service 
valve with excess valve     
e Fuel pump     
f Multi -valve     
g Gas-tight housing     
h Power s upply bushing     
i Non return valve     
j Pressure relief device     
2. Lists  of the container family  
The lists of the container family indicate the diameter, capacity, external 
surface and the possible configuration(s) of the accessories fitted to the 
container.  
Table 2  
No. Type  Diameter/height [mm]  Capacity [L]  External 
surface[cm2] Confi guration of 
accessories [codes]1 
01      
02      
1 Code 00 and, if applicable, same code(s) from Table 3.  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 2B – Appendix  
 
42 3. Lists of the possible configurations of accessories fitt ed to the container  
Specify a list of the possible accessories, which differ from the tested 
configuration of accessories (code 00) and which may be fitted to the type of 
container.  Specify for all accessories, type, approval number and extension 
number, indicating its own configuration code.  
Table 3  
No. Accessories  Type  Approval No.  Extension  
No. Configuration of 
accessories [code]  
a      
b      
c      
d      
 E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 2C  
 
43 Annex 2C  
  Arrangement of approval marks  
Model A  
(See paragraph 16. 4. of this Regulation)  
 
 
67 R—012439  
 
a  8 mm  
 
The above approval mark affixed to a vehicle shows that the vehicle 
has, with regard to the installation of specific equipment for the use of LPG 
for propulsion, been approved in the Netherlands (E  4), pursuant to 
Regulation No. 6 7 under approval number 012439.  The first two digits of the 
approval number indicate that the approval was granted in accordance with 
the requirements of Regulation No. 67 as amended by the 01 series of 
amendments.  
Model B  
(See paragraph 16. 4. of this Reg ulation)  
 
 
67 012439  
83 041628  
 
 a  8 mm  
 
The above approval mark affixed to a vehicle shows that the vehicle 
has, with regard to the installation of specific equipment for the use of LPG 
for propulsion, been approved in the Netherlands (E  4), pursuant t o 
Regulation No. 67 under approval number 012439.  The first two digits of the 
approval number indicate that the approval was granted in accordance with 
the requirements of Regulation No. 67 as amended by the 01 series of 
amendments and that Regulation No.  83 included the 04 series of 
amendments.  
 
 E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 2D  
44 Annex 2D  
  Communication  
(Maximum format: A4 (210 x 297 mm))   
 
 
1 
Concerning :2 Approval granted  
Approval extended  
Approval refused  
Approval withdrawn  
Production definit ively discontinued  
of a vehicle type with r egard to the installation of LPG sys tems pursuant to Regulation No.  67 
Approval No: ........... ......................    Extension No: ........ .............................. .. 
1. Trade name or mark of vehicle : ................................ ................................ ....................   
2. Vehicle type : ................................ ................................ ................................ .................   
3. Vehicle category :  ................................ ................................ ................................ .........   
4. Manufacturer's name and address : ................................ ................................ ................   
5. If applicable, name and address of manufacturer's representative : ...............................   
  ................................ ................................ ................................ ................................ ......  
  ................................ ................................ ................................ ................................ ......  
6. Description of the vehicle (drawings, etc.)  
7. Test results : ................................ ................................ ................................ ...................   
8. Submitted for approval on :  ................................ ................................ ..........................   
9. Technical Service responsible for conducting app roval tests : ................................ ......  
10. Date of report issued by that Service :  ................................ ................................ ..........   
11. No. of report issued by that Service:  ................................ ................................ .............   
12. Approval granted/refused/extended/withdrawn :2  
13. Reason(s) of extension (if applicable) : ................................ ................................ .........   
  
 1 Distinguishi ng number of the country which has granted/extended/refused/withdrawn approval (see 
approval provisions in the Regulation.)  
 2 Strike out what does not apply.  issued by :  Name of administration:  
 .................. .......................  
 ........................ .................  
 ............................ .............  E/ECE /324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 2D  
 
 45 14. Place :  ................................ ................................ ................................ ............................   
15. Date :  ................................ ................................ ................................ .............................   
16. Signature :  ................................ ................................ ................................ .....................   
17. The followi ng documents filed with the application or extension of approval can be  
obtained upon request.  
Drawings, diagrams and scheme plans regarding the components and the installation of the 
LPG equipment considered to be of importance for the purpose of this Reg ulation;  
Where applicable drawings of the various equipment and their position in the vehicle.  
 
 E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 3  
46 Annex 3  
  Provisions regarding the approval of LPG  container 
accessories  
1 80 per cent stop valve  
1.1. Definition:  See paragraph 2.5.1. of this Regulation.  
1.2. Component classification (according to Figure 1, para. 2.): Class 3.  
1.3. Classification pressure: 3,000 kPa.  
1.4. Design temperatures:  
-20 °C to 65 °C  
For temperatures exceeding the above -mentioned values, special tests 
conditions are applicable.  
1.5. General design rules:  
Paragraph 6.15.1., Provisions regarding 80 per cent stop valve.  
Paragraph 6.15.2., Provisions regarding the electrical insulation.  
Paragraph 6.15.3.1., Provisions on valves activated by electrical power.  
1.6. Applicable test procedu res: 
Overpressure  test Annex 15, para. 4 . 
 External leakage  Annex 15, para. 5 . 
 High temperature  Annex 15, para. 6 . 
 Low temperature  Annex 15, para. 7 . 
 Seat leakage  Annex 15, para. 8 . 
 Endurance  Annex 15, para. 9 . 
 Operational test s Annex 15, para. 10 . 
 LPG compatibility  Annex 15, para. 11 .** 
Corrosion resistance  Annex 15, para. 12 .* 
 Resistance to dry heat  Annex 15, para. 13 .** 
 Ozone ageing  Annex 15, para. 14 .** 
 Creep  Annex 15, para. 15 .** 
 Temperature cycle  Annex 15, para. 16 .** 
2. Level indicator  
2.1. Definition:  see paragraph 2.5.2. of this Regulation.  
2.2. Component classification (according to Figure 1, para. 2.): Class 1.  
2.3. Classification pressure: 3,000 kPa.  E/ECE/32 4/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 3  
 
 47 2.4. Design temperatures:  
-20 °C to 65 °C  
For temperatures exceeding the above -menti oned values, special tests 
conditions are applicable.  
2.5. General design rules:  
Paragraph 6.15.11., Provisions regarding the level indicator.  
 Paragraph 6.15.2., Provisions regarding the electrical insulation.  
2.6. Applicable test procedures:  
 Overpressur e test Annex 15, para. 4 . 
 External leakage  Annex 15, para. 5 . 
 High temperature  Annex 15, para. 6 . 
 Low temperature  Annex 15, para. 7 . 
 LPG compatibi lity Annex 15, para. 11 .** 
 Corrosion resistance  Annex 15, para. 12 .* 
 Resistance to dry heat  Annex  15, para. 13 .** 
 Ozone ageing  Annex 15, para. 14 .** 
 Creep  Annex 15, para. 15 .** 
 Temperature cycle  Annex 15, para. 16 .** 
3. Pressure relief valve (discharge valve)  
3.1. Definition: See paragraph 2.5.3. of this Regulation.  
3.2. Component classification  (according to Figure 1, para. 2.): Class 3.  
3.3. Classification pressure: 3,000 kPa.  
3.4. Design temperatures:  
-20 °C to 65 °C  
For temperatures exceeding the above -mentioned values, special tests 
conditions are applicable.  
3.5. General design rules:  
Paragraph 6.15.8., Provisions regarding the pressure relief valve (discharge 
valve)  
3.6. Applicable test procedures:  
 Overpressure  test Annex 15, para. 4 . 
 External leakage  Annex 15, para. 5 . 
 High temperature  Annex 15, para. 6 . 
 Low temperature  Annex 15, para . 7. 
 Seat leakage  Annex 15, para. 8 . 
 Endurance  Annex 15, para. 9 . 
(with 200 operation cycles)  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 3  
 
48  Operational test  Annex 15, para. 10 . 
 LPG compatibility  Annex 15, para. 11 .** 
 Corrosion resistance  Annex 15, para. 12 .* 
 Resistance to dry heat  Annex 15, para . 13.** 
 Ozone ageing  Annex 15, para. 14 .** 
 Creep  Annex 15, para. 15 .** 
Temperature cycle     Annex 15, para. 1 .6.** 
4. Remotely controlled service valve with excess flow valve  
4.1. Definition: see paragraph 2.5.4. of this Regulation.  
4.2. Component class ification (according to Figure 1, para.2.): Class 3 or Class 0 
if WP declared.  
4.3. Classification pressure: 3,000 kPa or WP declared if ≥ 3,000 kPa.  
4.4. Design temperatures:  
-20 °C to 65 °C  
For temperatures exceeding the above -mentioned values, special tests 
conditions are applicable.  
4.5. General design rules:  
Paragraph 6.15.2.,  Provisions regarding the electrical insulation.  
Paragraph 6.15.3.1., Provisions on valves activated by an electrical/external 
power.  
Paragraph 6.15.13., Provisions regarding the remotely controlled service 
valve with excess flow valve.  
4.6. Applicable te st procedures:  
 Overpressure  test Annex 15, para. 4 . 
 External leakage  Annex 15, para. 5 . 
 High temperature  Annex 15, para. 6 . 
 Low temperature  Annex 15, para. 7 . 
 Seat leakage  Annex 15, para. 8 . 
 Endurance  Annex 15, para. 9 . 
 Operational test  Annex 15, pa ra. 10  
 LPG compatibility  Annex 15, para. 11 .** 
 Corrosion resistance  Annex 15, para. 12 .* 
 Resistance to dry heat  Annex 15, para. 13 .** 
 Ozone ageing  Annex 15, para. 14 .** 
 Creep  Annex 15, para. 15 .** 
 Temperature cycle  Annex 15, para. 16 .** 
 E/ECE/32 4/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 3  
 
 49 4.7. If the  remotely controlled service valve is closed during commanded stop 
phases,  the valve shall be submitted to the following numbers of operations 
during  the endurance test of paragraph 9. of  Annex 15 : 
(a) 200,000 cycles (mark "H 1") if the engine shuts off aut omatically when 
the vehicle comes to a halt.  
(b) 500,000 cycles (mark "H 2") if, in addition to (a), the engine also shuts 
off automatically when the vehicle drives with the electric motor only.  
(c) 1,000,000 cycles (mark "H 3") if, in addition to (a) or (b) , the engine 
also shuts off automatically when the accelerator pedal is released.  
 Notwithstanding the above -mentioned provisions, the valve complying with 
(b) shall be deemed to satisfy (a), and the valve complying with (c) shall be 
deemed to satisfy (a) and (b).   
5. Power supply bushing  
5.1. Definition: see paragraph 2.5.8. of this Regulation.  
5.2. Component classification (according to Figure 1, para. 2 .): 
 Class 0 for the part which is in contact with liquid LPG at a pressure > 3,000 kPa;  
 Class 1 for t he part which is in contact with liquid LPG at a pressure  ≤ 3,000 kPa.  
5.3. Classification pressure:  
 Parts of Class 0  WP declared  
 Parts of Class 1  3,000 kPa  
5.4. Design temperatures:  -20 °C to 65 °C  
 For temperatures exceeding the above -mentioned values, special tests 
conditions are applicable.  
5.5. General de sign rules:  
Paragraph 6.15.2., Provisions regarding the electrical insulation.  
Paragraph 6.15.2.3., Provisions regarding the power supply bushing.  
5.6. Applicable test procedures:  
 Overpressure  test Annex 15, para. 4 . 
 External leakage  Annex 15, para. 5 . 
 High temperature  Annex 15, para. 6 . 
 Low temperature  Annex 15, para. 7 . 
 LPG compatibility  Annex 15, para. 11 .** 
 Corrosion resistance  Annex 15, para. 12 .* 
 Resistance to dry heat  Annex 15, para. 13 .** 
 Ozone ageing  Annex 15, para. 14 .** 
 Creep  Annex 15, para. 15 .** 
 Temperature cycle  Annex 15, para. 16 .** E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 3  
 
50 6. Gas-tight housing  
6.1. Definition: See paragraph 2.5.7. of this Regulation.  
6.2. Component classification (according to Figure 1, para. 2.):  
Not applicable.  
6.3. Classification pressure: Not applicabl e. 
6.4. Design temperatures:  
-20 °C to 65 °C  
For temperatures exceeding the above -mentioned values, special tests 
conditions are applicable.  
6.5. General design rules:  
Paragraph 6.15.12., Provisions regarding the gas -tight housing.  
6.6. Applicable test pr ocedures:  
 Overpressure  test Annex 15, para. 4 . (at 50 kPa)  
 External leakage  Annex 15, para. 5 . (at 10 kPa)  
 High temperature  Annex 15, para. 6 . 
 Low temperature  Annex 15, para. 7 . 
7. Provisions regarding the approval of the pressure relief device (fuse)  
7.1. Definition:  see paragraph 2.5.3.1. of this Regulation.  
7.2. Component classification (according to Figure 1, paragraph 2.): Class 3.  
7.3. Classification pressure:  3,000 kPa.  
7.4. Design temperature:  
The fuse has to be designed to open at a temperatu re of 120   10 °C 
7.5. General design rules  
 Paragraph 6.15.2., Provisions regarding the electrical insulation  
Paragraph 6.15.3.1., Provisions on valves activated by electrical power  
Paragraph 6.15.7., Provisions regarding the gas tube pressure relief valv e 
7.6. Test procedures to be applied:  
 Overpressure test  Annex 15, para. 4 . 
 External leakage  Annex 15, para. 5 . 
 High temperature  Annex 15, para. 6 . 
 Low temperature  Annex 15, para. 7 . 
 Seat (if any) leakage  Annex 15, para. 8 . 
 LPG compatibility  Annex 15 , para. 11 .** 
 Corrosion resistance  Annex 15, para. 12 .* 
 Resistance to dry heat  Annex 15, para. 13 .** E/ECE/32 4/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 3  
 
 51  Ozone ageing  Annex 15, para. 14 .** 
 Creep  Annex 15, para. 15 .** 
 Temperature cycles  Annex 15, para. 16 .** 
7.7. Pressure relief device  (fuse) requiremen ts 
Pressure relief device (fuse) specified by the manufacturer shall be shown to 
be compatible with the service conditions by means of the following tests:  
(a) One specimen shall be held at a controlled temperature of not less than 
90 °C and a pressure no t less than test pressure (3,000 kPa) for 
24 hours.  At the end of this test there shall be no leakage or visible 
sign of extrusion of any fusible metal used in the design.  
(b) One specimen shall be fatigue tested at a pressure cycling rate not to 
exceed 4 cycles per minute as follows:  
(i) Held  at 82 °C while pressured for 10,000 cycles between 300 
and 3,000  kPa; 
(ii) Held  at -20 °C while pressured for 10,000 cycles between 300 
and 3,000  kPa. 
At the end of this test there shall be no leakage, or any visibl e sign of 
extrusion of any fusible metal used in the design.  
(c) Exposed brass pressure retaining components of pressure relief device 
shall withstand, without stress corrosion cracking, a mercurous nitrate 
test as described in ASTM B154 ***.  The pressure  relief device shall 
be immersed for 30 minutes in an aqueous mercurous nitrate solution 
containing 10 g of mercurous nitrate and 10 ml of nitric acid per litre 
of solution. Following the immersion, the pressure relief device shall 
be leak tested by applyi ng an aerostatic pressure of 3,000 kPa for one 
minute during which time the component shall be checked for external 
leakage. Any leakage shall not exceed 200 cm3/h. 
(d) Exposed stainless steel pressure retaining components of pressure 
relief device shall be made of an alloy type resistant to chloride 
induced stress corrosion cracking.  
 
 
 ___________  
 * Only for metallic parts.  
 ** Only for non -metallic parts.  
 *** This procedure, or other equivalent, is allowed until an international standard will be avail able.  
 E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 4  
 
52 Annex 4  
  Provisions regarding the approval of the fuel pump  
1 Definition:  See paragraph 2.5.5. of this Regulation.  
2. Component classification (according to Figure 1, para. 2.):   
Class 0 for the part which is in contact with liquid LPG at a 
press ure > 3,000  kPa;  
Class 1 for the part which is in contact with liquid LPG at a 
pressure  ≤ 3,000  kPa.  
3. Classification pressure:  
Parts of Class 0   WP declared  
Parts of Class 1   3,000 kPa  
4. Design temperatures:  
-20 °C to 65 °C, when the fuel pump is mounted inside the container.  
-20 °C to 120 °C, when the fuel pump is mounted outside the container.  
For temperatures exceeding the above -mentioned values, special tests 
conditions are applicable.  
5. General design rules:  
Paragraph 6.15.2., Provisions regarding the electrica l insulation.  
Paragraph 6.15.2.1., Provisions regarding the insulation class.  
Paragraph 6.15.3.2., Provisions when the power is switched off.  
Paragraph 6.15.6.1., Provisions to prevent pressure build -up. 
6. Applicable test procedures:  
6.1. Fuel pump mounte d inside the container:  
 LPG compatibility  Annex 15, para. 11 .** 
6.2. Fuel pump mounted outside the container:  
 Overpressure  test Annex 15, para. 4 . 
 External leakage  Annex 15, para. 5 . 
 High temperature  Annex 15, para. 6 . 
 Low temperature  Annex 15, para. 7. 
 LPG compatibility  Annex 15, para. 11 .**  
 Corrosion resistance  Annex 15, para. 12 .*  
 Resistance to dry heat  Annex 15, para. 13 .** 
 Ozone ageing  Annex 15, para. 14 .** 
 Creep  Annex 15, para. 15 .** 
 Temperature cycle  Annex 15, para. 16 .** 
 _________ ___ 
 * Only for metallic parts.  
 ** Only for non -metallic parts.  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 5  
53 Annex 5  
  Provisions regarding the approval of the LPG  filter unit  
1. Definition: See paragraph 2.14. of this Regulation.  
2. Component classification (according to Figure 1, para. 2.):  
 Filter u nits can be Class 0, 1, 2 or 2A.  
3. Classification pressure:  
 Components of Class 0:  WP declared  
 Components of Class 1:  3,000 kPa.  
 Components of Class 2:     450 kPa.  
 Components of Class 2A:     120 kPa.  
4. Design temperatures:  
-20 °C to 120 °C  
For temper atures exceeding the above -mentioned values, special tests 
conditions are applicable.  
5. General design rules: (not used)  
6. Applicable test procedures:  
6.1. For parts of Class 1:  
 Overpressure  test Annex 15, para. 4 . 
 External leakage  Annex 15, para. 5 . 
 High temperature  Annex 15, para. 6 . 
 Low temperature  Annex 15, para. 7 . 
 LPG compatibility  Annex 15, para. 11 .**  
 Corrosion resistance  Annex 15, para. 12 .* 
 Resistance to dry heat  Annex 15, para. 13 .**  
 Ozone ageing  Annex 15, para. 14 .** 
 Creep  Annex 15 , para. 15 .** 
 Temperature cycle  Annex 15, para. 16 .** 
6.2. For parts of Class 2 and/or 2A:  
 Overpressure  test Annex 15, para. 4 . 
 External leakage  Annex 15, para. 5 . 
 High temperature  Annex 15, para. 6 . 
 Low temperature  Annex 15, para. 7 . 
 LPG compatibili ty Annex 15, para. 11 .** 
 Corrosion resistance  Annex 15, para. 12 .** 
 _________________  
 * Only for metallic parts.  
 ** Only for non -metallic parts.  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 6  
54 Annex 6  
  Provisions regarding the approval of the pressure regulator 
and the vaporizer  
1. Definition:  
Vaporizer: See paragraph 2.6. of this Regulation.  
Pressure regulator: see paragraph 2.7. of this Regulation.  
2. Component classification (according to Figure 1, para. 2.):  
Class 0: for the part which is in contact with LPG at a pressure  > 3,000  kPa. 
Class 1:  for the part which is in contact with the pressure ≤ 3,000 kPa.  
Class 2: for the part which is in contact with the regulated pressure and with a 
maximum regulated pressure during operation of 450 kPa.  
Class 2A: for the part which is in contact with the regulat ed pressure and with 
a maximum regulated pressure during operation of 120 kPa.  
3. Classification pressure:  
 Parts of Class 0:  WP declared  
 Parts of Class 1:  3,000 kPa.  
 Parts of Class 2:     450 kPa.  
 Parts of Class 2A:     120 kPa.  
4. Design temperatures:   
-20 °C to 120 °C  
For temperatures exceeding the above -mentioned values, special tests 
conditions are applicable.  
5. General design rules:  
Paragraph 6.15.2., Provisions regarding the electrical insulation.  
Paragraph 6.15.3.1., Provisions on valves activat ed by external power.  
Paragraph 6.15.4., Heat exchange medium (compatibility and pressure 
requirements).  
Paragraph 6.15.5., Overpressure bypass security.  
 Paragraph 6.15.6.2., Gas flow prevention.  
6. Applicable test procedures:  
6.1. For parts of Class 1:  
 Overpressure  test Annex 15, para. 4 . 
 External leakage  Annex 15, para. 5 . 
 High temperature  Annex 15, para. 6 . 
 Low temperature  Annex 15, para. 7 . E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 6  
 
 55  Seat leakage  Annex 15, para. 8 . 
 Endurance  (Number of  
cycles shall be 50,000 cycles)  Annex 15, para. 9 . 
 LPG compatibility  Annex 15, para. 11 .** 
 Corrosion resistance  Annex 15, para. 12 .* 
 Resistance to dry heat  Annex 15, para. 13 .** 
 Ozone ageing  Annex 15, para. 14 .** 
 Creep  Annex 15, para. 15 .** 
 Temperature cycle  Annex 15, para. 16 .** 
6.2. For parts of Class  2 and/or 2A:  
 Overpressure  test Annex 15, para. 4 . 
 External leakage  Annex 15, para. 5 . 
 High temperature  Annex 15, para. 6 . 
 Low temperature  Annex 15, para. 7 . 
 LPG compatibility  Annex 15, para. 11 .** 
 Corrosion resistance  Annex 15, para. 12 .* 
Remarks:  
The shut -off valve can be integrated in the vaporizer, regulator, in this case 
Annex 7 is also applicable.  
The parts of the pressure regulator/vaporizer (Class 1, 2 or 2A) shall be leak 
proof  with the outlet(s) of that part closed off.  
For the overpressure test all the outlets including those of the coolant 
compartment shall be closed off.  
 
 
 
 
 
 
 
 
 
 
__________________  
 * Only for metallic parts.  
 ** Only for non -metallic parts.  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 7  
56 Annex 7  
  Provisions regarding the approval of the shut -off valve,  
the non -retur n valve, the gas -tube pressure relief valve  
and the service coupling  
1. Provisions regarding the approval of the shut -off valve  
1.1. Definition:  See paragraph 2.8. of this Regulation.  
1.2. Component classification (according to Figure 1, para. 2.): Class 3. 
1.3. Classification pressure: 3,000 kPa or WP declared if  > 3,000 kPa.  
1.4. Design temperatures:  
-20 °C to 120 °C  
For temperatures exceeding the above -mentioned values, special tests 
conditions are applicable.  
1.5. General design rules:  
Paragraph 6.15. 2., Provisions regarding the electrical insulation.  
Paragraph 6.15.3.1., Provisions on valves activated by electrical power.  
1.6. Applicable test procedures:  
 Overpressure  test Annex 15, para. 4 . 
 External leakage  Annex 15, para. 5 . 
 High temperature  Annex  15, para. 6 . 
 Low temperature  Annex 15, para. 7 . 
 Seat leakage  Annex 15, para. 8. 
 Endurance  Annex 15, para. 9 . 
 LPG compatibility  Annex 15, para. 11.** 
 Corrosion resistance  Annex 15, para. 12 .* 
 Resistance to dry heat  Annex 15, para. 13 .** 
 Ozone ageing  Annex 15, para. 14 .** 
 Creep  Annex 15, para. 15 .** 
 Temperature cycle  Annex 15, para. 16 .** 
1.7. If the remotely controlled shut -off valve is closed during commanded stop 
phases,  the valve shall be submitted to the numbers of operations according 
to para graph 4.7. of Annex 3 during the endurance test of paragraph 9. of 
Annex 15 . 
2.  Provisions regarding the approval of the non -return valve  
2.1. Definition:  See paragraph 2.5.9. of this Regulation.  
2.2. Component classification (according to Figure 1, para . 2.): Class 1.  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 7 
 
 57 2.3. Classification pressure: 3,000 kPa.  
2.4. Design temperatures:  
-20 °C to 120 °C  
For temperatures exceeding the above -mentioned values, special tests 
conditions are applicable.  
2.5. General design rules:  
Paragraph 6.15.2., Provisions re garding the electrical insulation.  
Paragraph 6.15.3.1., Provisions on valves activated by electrical power.  
2.6. Applicable test procedures:  
 Overpressure  test Annex 15, para. 4 . 
 External leakage  Annex 15, para. 5 . 
 High temperature  Annex 15, para. 6 . 
 Low temperature  Annex 15, para. 7 . 
 Seat leakage  Annex 15, para. 8. 
 Endurance  Annex 15, para. 9 . 
 LPG compatibility  Annex 15, para. 11.** 
 Corrosion resistance  Annex 15, para. 12 .* 
 Resistance to dry heat  Annex 15, para. 13 .** 
 Ozone ageing  Annex 15, para. 14.** 
 Creep  Annex 15, para. 15 .** 
 Temperature cycle  Annex 15, para. 16 .** 
3. Provisions regarding the approval of the gas -tube relief valve  
3.1. Definition:  See paragraph 2.9. of this Regulation.  
3.2. Component classification (according to Figure 1, pa ra. 2.): Class 3.  
3.3. Classification pressure: 3,000 kPa or WP declared if  > 3,000 kPa.  
3.4. Design temperatures:  
-20 °C to 120 °C  
For temperatures exceeding the above -mentioned values, special tests 
conditions are applicable.  
3.5. General design rules:  
Paragraph 6.15.2., Provisions regarding the electrical insulation.  
Paragraph 6.15.3.1., Provisions on valves activated by electrical power.  
Paragraph 6.15.7., Provisions regarding the gas -tube pressure relief valve.  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 7  
 
58 3.6. Applicable test procedures:  
 Overpr essure  test Annex 15, para. 4 . 
 External leakage  Annex 15, para. 5 . 
 High temperature  Annex 15, para. 6 . 
 Low temperature  Annex 15, para. 7 . 
 Seat leakage  Annex 15, para. 8 . 
 Endurance  Annex 15, para. 9 . 
 (with 200 operation cycles)  
 LPG compatibility  Anne x 15, para. 11 .** 
 Corrosion resistance  Annex 15, para. 12 .* 
 Resistance to dry heat  Annex 15, para. 13 .** 
 Ozone ageing  Annex 15, para. 14 .** 
 Creep  Annex 15, para. 15 .** 
 Temperature cycle  Annex 15, para. 16 .** 
4. Provisions regarding the approval of th e service coupling  
4.1. Definition:  See paragraph 2.17. of this Regulation.  
4.2. Component classification (according to Figure 1, para. 2.): Class 1.  
4.3. Classification pressure: 3,000 kPa.  
4.4. Design temperatures:  
-20 °C to 120 °C  
For temperatures exc eeding the above -mentioned values, special tests 
conditions are applicable.  
4.5. General design rules:  
Paragraph 6.15.2., Provisions regarding the electrical insulation.  
Paragraph 6.15.3.1., Provisions on valves activated by electrical power.  
4.6. Applicab le test procedures:  
 Overpressure  test Annex 15, para. 4 . 
 External leakage  Annex 15, para. 5 . 
 High temperature  Annex 15, para. 6 . 
 Low temperature  Annex 15, para. 7 . 
 Seat leakage  Annex 15, para. 8 . 
 Endurance  Annex 15, para. 9 . 
 (with 6,000 operation cy cles)   
 LPG compatibility  Annex 15, para. 11 .** 
 Corrosion resistance  Annex 15, para. 12 .* 
 Resistance to dry heat  Annex 15, para. 13 .** 
 Ozone ageing  Annex 15, para. 14 .** E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 7 
 
 59  Creep  Annex 15, para. 15 .** 
 Temperature cycle  Annex 15, para. 16 .** 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
__________________  
 * Only for metallic parts.  
 ** Only for non -metallic parts.  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 8  
60 Annex 8  
  Provisions regarding the approval of flexible hoses with 
couplings  
Scope  
The purpose of this annex is to determine the provisions regarding the 
approval of flexible hoses for use with LPG, having an inside diameter up to 
20 mm.  
This annex covers four types of flexible hoses:  
 (a) High pressure rubber hoses (Class 1, e.g. Filling hose) ; 
(b) Low pressure rubber hoses (Class 2) ; 
(c) High pressure sy nthetic hoses (Class 1) ; 
(d) High pressure synthetic hoses (Class 0) . 
1. High pressure rubber hoses, Class 1 classification, filling hose  
1.1. General specifications  
1.1.1.  The hose shall be so designed as to withstand a maximum operating pressure 
of 3,000 kPa. 
1.1.2.  The hose shall be so designed as to withstand temperatures between -25 °C 
and +80  °C.  For operating temperatures exceeding the above -mentioned 
values, the test temperatures shall  be adapted.  
1.1.3.  The inside diameter shall be in complia nce with Table 1 of standard 
ISO 1307.  
1.2. Hose construction  
1.2.1.  The hose shall  embody a smooth -bore tube and a cover of suitable synthetic 
material, reinforced with one or more interlayer(s).  
1.2.2.  The reinforcing interlayer(s) has (have) to be pr otected by a cover against 
corrosion.  
If for the reinforcing interlayer(s) corrosion -resistant -material is used 
(i.e. stainless -steel) a cover is not required.  
1.2.3.  The lining and the cover shall  be smooth and free from pores, holes and 
strange elements . 
An intentionally provided puncture in the cover shall not be considered as an 
imperfection.  
1.2.4.  The cover has to be intentionally perforated to avoid the forming of bubbles.  
1.2.5.  When the cover is punctured and the interlayer is made of a non -corrosion -
resistant material, the interlayer has to be protected against corrosion.  
1.3. Specifications and tests for the lining  
1.3.1.  Tensile strength and elongation  
1.3.1.1.  Tensile strength and elongation  at break according to ISO 37.  Tensile 
strength not less than 10 MPa and elongation at break not less than 250 per 
cent.  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 8  
 
 61 1.3.1.2.  Resistance to n -pentane  according to ISO 1817 with the following conditions:  
(a) Medium : n-pentane ; 
(b) Temperature : 23 °C (tolerance acc. to ISO 1817) ; 
(c) Immersion  period : 72 hours . 
Requirements:  
(a) Maximum  change in volume 20 per cent ; 
(b) Maximum  change in tensile strength 25 per cent ; 
(c) Maximum  change in elongation at break 30 per cent . 
After storage in air with a temperature of 40 °C for a period of 48 hours the 
mass compared to the original value may not decrease more than 5 per cent.  
1.3.1.3.  Resistance to ageing according to ISO 188 with the following conditions:  
(a) Temperature : 70 °C (test temperature  = maximum operating 
temperature minus 10  °C); 
(b) Exposure  period: 168 hours . 
Requirements:  
(a) Maximum  change in tensile strength 25 per cent ; 
(b) Maximum  change in elongation at break -30 per cent and +10 per 
cent. 
1.4. Specifications and test -method for the cover  
1.4.1.  Tensile strength and elongation at brea k according to ISO 37. Tensile 
strength not less than 10 MPa and elongation at break not less than 250 per 
cent.  
1.4.1.1.  Resistance to n -hexane  according to  ISO 1817 with the following conditions:  
(a) Medium : n-hexane ; 
(b) Temperature : 23 °C (tolerance a cc. to ISO 1817) ; 
(c) Immersion  period: 72 hours . 
Requirements:  
(a) Maximum  change in volume 30 per cent ; 
(b) Maximum  change in tensile strength 35 per cent ; 
(c) Maximum  change in elongation at break 35 per cent . 
1.4.1.2.  Resistance to ageing according  to ISO 188 with the following conditions:  
(a) Temperature : 70  °C (test temperature = maximum operating 
temperature minus 10  °C); 
(b) Exposure  period:  336 hours . 
Requirements:  
(a) Maximum  change in tensile strength 25 per cent ; 
(b) Maximum  change in elongat ion at break -30 per cent and +10 per 
cent. 
1.4.2.  Resistance to ozone  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 8  
 
62 1.4.2.1.  The test has to be performed in compliance with standard ISO 1431/1.  
1.4.2.2.  The test -pieces, which have to be stretched to an elongation of 20 per cent 
shall have to be ex posed to air of 40  °C with an ozone -concentration of 
50 parts per hundred million during 120 hours.  
1.4.2.3.  No cracking of the test pieces is allowed.  
1.5. Specifications for uncoupled hose  
1.5.1.  Gas-tightness (permeability)  
1.5.1.1.  A hose at a free  length of 1 m has to be connected to a container filled with 
liquid propane, having a temperature of 23  °C  2 °C. 
1.5.1.2.  The test has to be carried out in compliance with the method described in 
standard ISO 4080.  
1.5.1.3.  The leakage through the wal l of the hose shall not exceed 95 cm3 of vapour 
per metre of hose per 24 h.  
1.5.2.  Resistance at low temperature  
1.5.2.1.  The test has to be carried out in compliance with the method described in 
standard ISO 4672:1978 method B.  
1.5.2.2.  Test-temperatur e: -25 °C  3 °C. 
1.5.2.3.  No cracking or rupture is allowed.  
1.5.3.  (Not used)  
1.5.4.  Bending test  
1.5.4.1.  An empty hose, at a length of approximately 3.5 m shall  be able to withstand 
3,000  times the hereafter prescribed alternating -bending -test with out 
breaking.  After the test the hose shall  be capable of withstanding the test -
pressure as mentioned in paragraph 1.5.5.2.  below.  
1.5.4.2.  
Figure 1 (example only)    
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
ab
propulsion mechanismmass
1,2m E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 8  
 
 63  
Hose inside diameter  
[mm]  Bending radius  
[mm]  
(Figure 1)  Distance betwee n centres  [mm]  
(Figure 1)  
Vertical  
b Horizontal  
a 
up to 13  102 241 102 
13 to 16  153 356 153 
from 16 to 20  178 419 178 
 
1.5.4.3.  The testing machine (see Figure 1) shall consist of a steel frame, provided 
with two wooden wheels, with a rim -width of c.a. 130 mm.  
The circumference of the wheels shall  be grooved for the guidance of the 
hose.  The radius of the wheels, measured to the bottom of the groove, shall  
be as indicated in paragraph 1.5.4.2.  above.  
The longitudinal median planes of both wheels shall be in the same vertical 
plane and the distance between the wheel -centres shall  be in accordance with 
paragraph  1.5.4.2.  
Each wheel shall  be able to rotate freely round its pivot -centre.  
A propulsion mechanism pulls the hose over the wheels at a speed o f four 
complete motions per minute.  
1.5.4.4.  The hose shall be S -shape -like installed over the wheels (see Figure 1).  
The end that runs over the upper wheel shall be furnished with a sufficient 
mass as to achieve a complete snuggling of the hose against t he wheels.  The 
part that runs over the lower wheel is attached to the propulsion mechanism.  
The mechanism shall  be so adjusted, that the hose travels a total distance of 
1.2 m in both directions.  
1.5.5.  Hydraulic test pressure and determination of the min imum burst -pressure  
1.5.5.1.  The test has to be carried out in compliance with the method described in 
standard ISO 1402.  
1.5.5.2.  The test -pressure of 6,750 kPa shall be applied during 10 minutes, without 
any leakage.  
1.5.5.3.  The burst pressure shall not  be less than 10,000 kPa.  
1.6. Couplings  
1.6.1.  The couplings shall be made from steel or brass and the surface shall  be 
corrosion -resistant.  
1.6.2.  The couplings shall  be of the crimp -fitting type.  
1.6.2.1.  The swivel -nut shall  be provided with U.N.F. thr ead. 
1.6.2.2.  The sealing cone of swivel -nut type shall  be of the type with a half vertical 
angle of 45°.  
1.6.2.3.  The couplings can be made as swivel -nut type or as quick -connector type.  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 8  
 
64 1.6.2.4.  It shall be impossible to disconnect the quick -connector ty pe without specific 
measures or the use of dedicated tools.  
1.7. Assembly of hose and couplings  
1.7.1.  The construction of the couplings shall  be such, that it is not necessary to 
peel the cover unless the reinforcement of the hose consists of corrosion -
resistant material.  
1.7.2.  The hose assembly has to be subjected to an impulse test in compliance with 
standard ISO 1436.  
1.7.2.1.  The test has to be completed with circulating oil having a temperature of 
93 °C, and a minimum pressure of 3,000 kPa.  
1.7.2.2.  The hose has to be subjected to 150,000 impulses.  
1.7.2.3.  After the impulse test the hose has to withstand the test -pressure as 
mentioned in paragraph 1.5.5.2.  above.  
1.7.3.  Gas-tightness  
1.7.3.1.  The hose assembly (hose with couplings) has to withstand d uring five 
minutes a gas pressure of 3,000 kPa without any leakage.  
1.8. Markings  
1.8.1.  Every hose shall  bear, at intervals of not greater than 0.5 m, the following 
clearly legible and indelible identification markings consisting of characters, 
figures or  symbols.  
1.8.1.1.  The trade name or mark of the manufacturer.  
1.8.1.2.  The year and month of fabrication.  
1.8.1.3.  The size and type -marking.  
1.8.1.4.  The identification marking "L.P.G. Class 1".  
1.8.2.  Every coupling shall bear the trade name or mark of the assembling 
manufacturer.  
2. Low pressure rubber hoses , Class 2 classification  
2.1. General specifications  
2.1.1.  The hose shall be so designed as to withstand a maximum operating pressure 
of 450 kPa.  
2.1.2.  The hose shall be so designed as to withstand  temperatures between -25 °C 
and +125  °C.  For operating temperatures exceeding the above - mentioned 
values, the test temperatures shall  be adapted.  
2.2. Hose construction  
2.2.1.  The hose shall  embody a smooth -bore tube and a cover of suitable synthetic 
material, reinforced with one or more interlayer(s).  
2.2.2.  The reinforcing interlayer(s) has (have) to be protected by a cover against 
corrosion.  
If for the reinforcing interlayer(s) corrosion -resistant material is used 
(i.e. stainless steel) a cover is not  required.  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 8  
 
 65 2.2.3.  The lining and the cover shall  be smooth and free from pores, holes and 
strange elements.  
An intentionally provided puncture in the cover shall not be considered as an 
imperfection.  
2.3. Specifications and tests for the lining  
2.3.1.  Tens ile strength and elongation  
2.3.1.1.  Tensile strength and elongation at break according to ISO 37. Tensile 
strength not less than 10 MPa and elongation at break not less than 250 per 
cent.  
2.3.1.2.  Resistance to n -pentane according to ISO 1817 with the fol lowing conditions:  
(a) Medium : n-pentane ; 
(b) Temperature : 23 °C (tolerance acc. to ISO 1817) ; 
(c) Immersion  period: 72 hours . 
Requirements:  
(a) Maximum  change in volume 20 per cent ; 
(b) Maximum  change in tensile strength 25 per cent ; 
(c) Maximum  change i n elongation at break 30 per cent . 
After storage in air with a temperature of 40 °C for a period of 48 hours the 
mass compared to the original value may not decrease more than 5 per cent.  
2.3.1.3.  Resistance to ageing according to ISO 188 with the followin g conditions:  
(a) Temperature : 115 °C (test temperature = maximum operating 
temperature minus 10  °C); 
(b) Exposure  period: 168 hours . 
Requirements:  
(a) Maximum  change in tensile strength 25 per cent ; 
(b) Maximum  change in elongation at break -30 per cent a nd +10 per 
cent. 
2.4. Specifications and test method for the cover  
2.4.1.1.  Tensile strength and elongation at break according to ISO 37. Tensile 
strength not less than 10 MPa and elongation at break not less than 250 per 
cent.  
2.4.1.2.  Resistance to n -hexane according to ISO 1817 with the following conditions:  
(a) Medium : n-hexane ; 
(b) Temperature : 23 °C (tolerance acc. to ISO 1817) ; 
(c) Immersion  period: 72 hours . 
Requirements:  
(a) Maximum  change in volume 30 per cent ; 
(b) Maximum  change in tensile stren gth 35 per cent ; 
(c) Maximum  change in elongation at break 35 per cent . E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 8  
 
66 2.4.1.3.  Resistance to ageing according to ISO 188 with the following conditions:  
(a) Temperature : 115  °C (test temperature = maximum operating 
temperature minus 10  °C); 
(b) Exposure  period: 336 hours . 
Requirements:  
(a) Maximum  change in tensile strength 25 per cent ; 
(b) Maximum  change in elongation at break -30 per cent and +10 per 
cent. 
2.4.2.  Resistance to ozone  
2.4.2.1.  The test has to be performed in compliance with standard ISO 14 31/1.  
2.4.2.2.  The test -pieces, which have to be stretched to an elongation of 20 per cent 
shall have to be exposed to air of 40  °C with an ozone concentration of 50 
parts per hundred million during 120 hours.  
2.4.2.3.  No cracking of the test pieces is all owed.  
2.5. Specifications for uncoupled hose  
2.5.1.  Gas-tightness (permeability)  
2.5.1.1.  A hose at a free length of 1 m has to be connected to a container filled with 
liquid propane, having a temperature of 23   2 °C. 
2.5.1.2.  The test has to be carried o ut in compliance with the method described in 
standard ISO 4080.  
2.5.1.3.  The leakage through the wall of the hose shall not exceed 95 cm3 of vapour 
per metre of hose per 24 h.  
2.5.2.  Resistance at low temperature  
2.5.2.1.  The test has to be carried out in  compliance with the method described in 
standard ISO 4672 -1978 method B.  
2.5.2.2.  Test-temperature:  -25 °C  3 °C 
2.5.2.3.  No cracking or rupture is allowed.  
2.5.3.  Bending test  
2.5.3.1.  An empty hose, at a length of approximately 3.5 m shall  be able to withstand 
3,000 times the hereafter prescribed alternating -bending -test without 
breaking.  After the test the hose shall  be capable of withstanding the test 
pressure as mentioned in paragraph 2.5.4.2.  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 8  
 
 67 2.5.3.2 . 
 
 
 
 
 
 
 
Hose inside diameter  
[mm]  Bending rad ius 
[mm]  
(Figure 2)  Distance between centres [mm]  
(Figure 2)  
Vertical  
b Horizontal  
a 
up to 13  102 241 102 
13 to 16  153 356 153 
from 16 to 20  178 419 178 
 
2.5.3.3.  The testing machine (see Figure 2) shall consist of a steel frame, provided 
with two w ooden wheels, with a rim -width of c.a. 130 mm.  
The circumference of the wheels shall  be grooved for the guidance of the 
hose.  The radius of the wheels, measured to the bottom of the groove, shall  
be as indicated in paragraph 2.5.3.2.  above.  
The longitudin al median planes of both wheels shall  be in the same vertical 
plane and the distance between the wheel -centres shall  be in accordance with 
paragraph  2.5.3.2.  above.  
Each wheel shall  be able to rotate freely round its pivot -centre.  
A propulsion mechanism pu lls the hose over the wheels at a speed of four 
complete motions per minute.  
2.5.3.4.  The hose shall be S -shape -like installed over the wheels (see Figure 2).  
The end that runs over the upper wheel shall be furnished with a sufficient 
mass as to achieve a complete snuggling of the hose against the wheels.  The 
part that runs over the lower wheel is attached to the propulsion mechanism.  
The mechanism shall  be so adjusted, that the hose travels a total distance of 
1.2 m in both directions.  
2.5.4.   Hydraulic t est pressure and determination of the minimum burst -pressure  
2.5.4.1.  The test has to be carried out in compliance with the method described in 
standard ISO 1402.  
2.5.4.2.  The test pressure of 1,015 kPa shall be applied during 10 minutes, without 
any leaka ge. Figure 2 ( example only)  
 
ab
propulsion mechanismmass
1,2m
 E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 8  
 
68 2.5.4.3.  The burst pressure shall not be less than 1,800 kPa.  
2.6. Couplings  
2.6.1.  The couplings shall be made from a non -corrosive material.  
2.6.2.  The coupling burst pressure in mounted position shall never be less than the 
tube or hose burst pressu re. 
The coupling leakage pressure in mounted position shall never be less than 
the tube or hose leakage pressure.  
2.6.3.  The couplings shall  be of the crimp -fitting type.  
2.6.4.  The couplings can be made as swivel -nut type or as quick -connector type.  
2.6.5 . It shall be impossible to disconnect the quick -connector type without specific 
measures or the use of dedicated tools.  
2.7. Assembly of hose and couplings  
2.7.1.  If hose and couplings are not assembled by the approval holder, the approval 
shall consist o f: 
(a) Hose;  
(b) Couplings; and  
(c) Assembly instruction.  
The assembly instruction shall be written in the language of the country to 
which the type of hose or couplings will be delivered, or at least in English. It 
shall include detailed characteristics o f equipment use d for the assembly 
operation.  
2.7.2. The construction of the couplings shall  be such, that it is not necessary to 
peel the cover unless the reinforcement of the hose consists of corrosion -
resistant material.  
2.7.3. The hose assembly has to b e subjected to an impulse test in compliance with 
standard ISO 1436.  
2.7.3.1. The test has to be completed with circulating oil having a temperature of 
93 °C, and a minimum pressure of 1,015 kPa.  
2.7.3.2. The hose has to be subjected to 150,000 impulses.  
2.7.3.3. After the impulse test the hose has to withstand the test -pressure as 
mentioned in paragraph 2.5.4.2.  above.  
2.7.4. Gas-tightness  
2.7.4.1. The hose assembly (hose with couplings) has to withstand during five 
minutes a gas pressure of 1,015 kPa with out any leakage.  
2.8. Markings  
2.8.1.  Every hose shall  bear, at intervals of not greater than 0.5 m, the following 
clearly legible and indelible identification markings consisting of characters, 
figures or symbols.  
2.8.1.1.  The trade name or mark of the ma nufacturer.  
2.8.1.2.  The year and month of fabrication.  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 8  
 
 69 2.8.1.3.  The size and type -marking.  
2.8.1.4.  The identification marking "L.P.G. Class 2".  
2.8.2.  Every coupling shall bear the trade name or mark of the assembling 
manufacturer.  
3. High pressure synth etic hoses, Class 1 classification  
3.1. General specifications  
3.1.1.  The purpose of this chapter is to determine the provisions regarding the 
approval of synthetic flexible hoses for use with LPG, having an inside 
diameter up to 10  mm. 
3.1.2.  This chapter  covers, in addition to general specifications and tests for 
synthetic hoses, also specifications and tests applicable for specific material 
types or a synthetic hose.  
3.1.3.  The hose shall be so designed as to withstand a maximum operating pressure 
of 3,0 00 kPa. 
3.1.4.  The hose shall be so designed as to withstand temperatures between -25 °C 
and +125  °C.  For operating temperatures exceeding the above -mentioned 
values, the test temperatures shall  be adapted.  
3.1.5.  The inside diameter shall be in complianc e with Table 1 of standard 
ISO 1307.  
3.2. Hose construction  
3.2.1.  The synthetic hose shall  embody a thermoplastic tube and a cover of suitable 
thermoplastic material, oil and weatherproof, reinforced with one or more 
synthetic interlayer(s).  If for the r einforcing interlayer(s) a corrosion -
resistant material is used (i.e. stainless -steel) a cover is not required.  
3.2.2.  The lining and the cover shall  be free from pores, holes and strange elements.  
An intentionally provided puncture in the cover shall not be considered as an 
imperfection.  
3.3. Specifications and tests for the lining  
3.3.1.  Tensile strength and elongation  
3.3.1.1.  Tensile strength and elongation at break  according to ISO 37. Tensile 
strength not less than 20 MPa and elongation at break not l ess than 200 per 
cent.  
3.3.1.2.  Resistance to n -pentane ac cording to ISO 1817 with the following conditions:  
(a) Medium : n-pentane ; 
(b) Temperature : 23 °C (tolerance acc. to ISO 1817) ; 
(c) Immersion  period: 72 hours . 
Requirements:  
(a) Maximum  change in vo lume 20 per cent ; 
(b) Maximum  change in tensile strength 25 per cent ; 
(c) Maximum  change in elongation at break 30 per cent . E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 8  
 
70 After storage in air with a temperature of 40 °C for a period of 48 hours the 
mass compared to the original value may not decrease more than 5 per cent.  
3.3.1.3.  Resistance to ageing  according to ISO 188 with the following conditions:  
(a) Temperature : 115 °C (test temperature = maximum operating 
temperature minus 10  °C); 
(b) Exposure  period: 336 hours . 
Requirements:  
(a) Maximum  change  in tensile strength 35 per cent ; 
(b) Maximum  change in elongation at break -30 per cent and +10 per 
cent. 
3.3.2.  Tensile strength and elongation specific for polyamide 6 material  
3.3.2.1.  Tensile strength and elongation at break  according to ISO 527 -2 wi th the 
following conditions:  
(a) Specimen  type: type 1 BA ; 
(b) Tensile  speed: 20 mm/min , 
The material has to be conditioned for at least 21 days at 23  °C and 50 per 
cent relative humidity prior to testing.  
Requirements:  
(a) Tensile  strength not less than 2 0 MPa ; 
(b) Elongation  at break not less than 50 per cent.  
3.3.2.2.  Resistance to n -pentane according to ISO 1817 with the following conditions:  
(a) Medium : n-pentane ; 
(b) Temperature : 23 °C (tolerance according to ISO 1817) ; 
(c) Immersion  period: 72 hours . 
Requirements:  
(a) Maximum  change in volume 2 per cent ; 
(b) Maximum  change in tensile strength 10 per cent . 
Maximum  change in elongation at break 10 per cent  
After storage  in air with a temperature of 40 °C for a period of 48  hours the 
mass compared to the  original value may not decrease more than 5 per cent.  
3.3.2.3.  Resistance to ageing  according to ISO 188 with the following conditions:  
(a) Temperature : 115 °C (test temperature = maximum operating 
temperature minus 10  °C); 
(b) Exposure  period: 24 and 336  hours . 
After ageing the specimens have to be conditioned at 23  °C and 50 per cent 
relative humidity for at least 21 days prior to carrying out the tensile test 
according to paragraph  3.3.2.1.  above.  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 8  
 
 71 Requirements:  
(a) Maximum  change in tensile strength 35 per cent after 336 hours 
ageing compared to the tensile strength of the 24 hours aged material ; 
(b) Maximum  change in elongation at break 25 per cent after 336 hours 
ageing compared to the elongation at break of the 24 hours aged 
material.  
3.4. Specificati ons and test method for the cover  
3.4.1.1.  Tensile strength and elongation at break  according to ISO 37.  Tensile 
strength not less than 20 MPa and elongation a t break not less than 250 per 
cent.  
3.4.1.2.  Resistance to n -hexane  according to ISO 1817 with t he following conditions:  
(a) Medium : n-hexane ; 
(b) Temperature : 23 °C (tolerance according to ISO 1817) ; 
(c) Immersion  period: 72 hours . 
 Requirements:  
(a) Maximum  change in volume 30 per cent ; 
(b) Maximum  change in tensile strength 35 per cent ; 
(c) Maxim um change in elongation at break 35 per cent ; 
3.4.1.3.  Resistance to ageing accordin g to ISO 188 with the following conditions:  
(a) Temperature : 115  °C (test temperature = maximum operating 
temperature minus 10  °C); 
(b) Exposure  period: 336 hours . 
Requirem ents:  
(a) Maximum  change in tensile strength 25 per cent ; 
(b) Maximum  change in elongation at break -30 per cent and +10 per 
cent. 
3.4.2.  Resistance to ozone  
3.4.2.1.  The test has to be performed in compliance with standard ISO 1431/1.  
3.4.2.2.  The test -pieces, which have to be stretched to an elongation of 20 per cent 
shall have to be exposed to air of 40 °C and a relative humidity of 50 per cent 
 10 per cent  with an ozone -concentration of 50 parts per hundred million 
during 120  hours.  
3.4.2.3.  No crackin g of the test pieces is allowed.  
3.4.3.  Specifications and test method for the cover made of polyamide 6 material  
3.4.3.1.  Tensile strength and elongation at break  according to ISO 527 -2 with the 
following conditions:  
(a) Specimen  type: type 1 BA ; 
(b) Tensile speed: 20 mm/min . E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 8  
 
72 The material has to be conditioned for at least 21 days at 23 °C and 50 per 
cent relative humidity prior to testing.  
Requirements:  
(a) Tensile  strength not less than 20 MPa ;  
(b) Elongation  at break not less than 100 per cent.  
3.4.3. 2. Resistance to n -hexane  according to ISO 1817 with the following conditions:  
(a) Medium : n-hexane ; 
(b) Temperature : 23 °C (tolerance according to ISO 1817) ; 
(c) Immersion  period: 72 hours . 
Requirements:  
(a) Maximum  change in volume 2 per cent ; 
(b) Maximu m change in tensile strength 10 per cent ; 
(c) Maximum  change in elongation at break 10 per cent . 
3.4.3.3.  Resistance to ageing  according to ISO 188 with the following conditions:  
(a) Temperature : 115  °C (test temperature = maximum operating 
temperature min us 10  °C); 
(b) Exposure  period: 24 and 336 hours . 
After ageing t he specimens have to be conditioned for at least 21 days before 
carrying out the tensile test according to paragraph 3.3.1.1.  above.  
Requirements:  
(a) Maximum  change in tensile strength 20 per  cent after 336  hours 
ageing compared to the tensile strength of the 24  hours aged material ; 
(b) Maximum  change in elongation at break 50 per cent after 336 hours 
ageing compared to the elongation at break of the 24 hours aged 
material.  
3.5. Specifications  for uncoupled hose  
3.5.1.  Gas-tightness (permeability)  
3.5.1.1.  A hose at a free length of 1 m has to be connected to a container filled with 
liquid propane, having a temperature of 23 °C  2 °C. 
3.5.1.2.  The test has to be carried out in compliance with the method described in 
standard ISO 4080.  
3.5.1.3.  The leakage through the wall of the hose shall not exceed 95 cm3 of vapour 
per metre of hose per 24 h.  
3.5.2.  Resistance at low temperature  
3.5.2.1.  The test has to be carried out in compliance with the m ethod described in 
standard ISO 4672 method B.  
3.5.2.2.  Test temperature: -25 °C  3 °C. 
3.5.2.3.  No cracking or rupture is allowed.  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 8  
 
 73 3.5.3.  Resistance at high temperature  
3.5.3.1.  A piece of hose, pressurized at 3,000 kPa, with a minimal length of 0.5 m 
shall be put in an oven at a temperature of 125  °C  2 °C during 24 hours.  
3.5.3.2.  No leakage is allowed.  
3.5.3.3.  After the test the hose shall withstand the test pressure of 6,750 kPa during 
10 minutes.  No leakage is allowed.  
3.5.4.  Bending test  
3.5.4.1.  An empty hose, at a length of approximately 3.5 m shall  be able to withstand 
3,000 times the hereafter prescribed alternating -bending -test without 
breaking.  After the test the hose shall  be capable of withstanding the test 
pressure as mentioned in paragr aph 3.5.5.2.  below.  
Figure 3 (example only)  
 
 
 
 
 
 
 
 
 
 
(
(a = 102 mm;   b= 241 mm)  
 
3.5.4.2.  The testing machine (see Figure 3) shall consist of a steel frame, provided 
with two wooden wheels, with a rim -width of approximately 130 mm.  
The circumference of t he wheels shall  be grooved for the guidance of the 
hose.  The radius of the wheels, measured to the bottom of the groove, shall  
be 102 mm.  
The longitudinal median planes of both wheels shall  be in the same vertical 
plane.  The distance between the wheel -centres shall  be vertical 241 mm and 
horizontal 102 mm.  
Each wheel shall  be able to rotate freely round its pivot -centre.  
A propulsion mechanism pulls the hose over the wheels at a speed of four 
complete motions per minute.  
3.5.4.3.  The hose shall be S -shape -like installed over the wheels (see Figure 3).  
The end, that runs over the upper wheel, shall be furnished with a sufficient 
mass as to achieve a complete snuggling of the hose against the wheels.  The 
part that runs over the lower wheel is attached to th e propulsion mechanism.  
The mechanism shall  be so adjusted, that the hose travels a total distance of 
1.2 m in both directions.  
ab
propulsion mechanismmass
1,2m E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 8  
 
74 3.5.5.  Hydraulic test pressure and determination of the minimum burst -pressure  
3.5.5.1.  The test has to be carried out in compli ance with the method described in 
standard ISO 1402.  
3.5.5.2.  The test pressure of 6,750 kPa shall be applied during 10 minutes, without 
any leakage.  
3.5.5.3.  The burst pressure shall not be less than 10,000 kPa.  
3.6. Couplings  
3.6.1.  The couplings shall b e made from steel or brass and the surface shall  be 
corrosion -resistant.  
3.6.2.  The couplings shall  be of the crimp -fitting type and made up of a hose -
coupling or banjo bolt.  The sealing shall be resistant to LPG and comply 
with paragraph  3.3.1.2.  above.  
3.6.3.  The banjo bolt shall comply with DIN 7643.  
3.7. Assembly of hose and couplings  
3.7.1.  The hose assembly has to be subjected to an impulse test in compliance with 
standard ISO 1436.  
3.7.1.1.  The test has to be completed with circulating oil having a temperature of 
93 °C, and a minimum pressure of 3,000 kPa.  
3.7.1.2.  The hose has to be subjected to 150,000 impulses.  
3.7.1.3.  After the impulse -test the hose has to withstand the test pressure as 
mentioned in paragraph  3.5.5.2.  above.  
3.7.2.  Gas-tightness  
3.7.2.1.  The hose assembly (hose with couplings) has to withstand during five 
minutes a gas pressure of 3,000 kPa without any leakage.  
3.8. Markings  
3.8.1.  Every hose shall  bear, at intervals of not greater than 0.5 m, the following 
clearly legible and in delible identification markings consisting of characters, 
figures or symbols.  
3.8.1.1.  The trade name or mark of the manufacturer.  
3.8.1.2.  The year and month of fabrication.  
3.8.1.3.  The size and type -marking.  
3.8.1.4.  The identification marking "L.P.G. C lass 1".  
3.8.2.  Every coupling shall bear the trade name or mark of the assembling 
manufacturer.  
4. High pressure synthetic hoses, Class 0 classification  
4.1. General specifications  
4.1.1.  The purpose of this chapter is to determine the provisions regardi ng the 
approval of synthetic flexible hoses for use with LPG, having an inside 
diameter up to 10 mm.  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 8  
 
 75 4.1.2.  This chapter covers, in addition to general specifications and tests for 
synthetic hoses, also specifications and tests applicable for specific mate rial 
types or a synthetic hose.  
4.1.3.  The hose shall be so designed as to withstand a maximum operating pressure 
of WP.  
4.1.4.  The hose shall be so designed as to withstand temperatures between -25 °C 
and +125  °C. For operating temperatures exceeding the above -mentioned 
values, the test temperatures shall  be adapted.  
4.1.5.  The inside diameter shall be in compliance with Table 1 of standard 
ISO 1307.  
4.2. Hose construction  
4.2.1.  The synthetic hose shall  embody a thermoplastic tube and a cover of suitable  
thermoplastic material, oil and weatherproof, reinforced with one or more 
synthetic interlayer(s). If for the reinforcing interlayer(s) a corrosion -resistant 
material is used (i.e. stainless -steel) a cover is not required.  
4.2.2.  The lining and the cover  shall  be free from pores, holes and strange elements.  
An intentionally provided puncture in the cover shall not be considered as an 
imperfection.  
4.3. Specifications and tests for the lining  
4.3.1.  Tensile strength and elongation  
4.3.1.1.  Tensile stre ngth and elongation at break according to ISO 37. Tensile 
strength not less than 20 MPa and elongation at break not less than 
200 per cent.  
4.3.1.2.  Resistance to n -pentane according to ISO 1817 with the following conditions:  
(a)  Medium: n -pentane ; 
(b)  Temperature: 23 °C (tolerance acc. to ISO 1817) ; 
(c) Immersion period: 72 hours . 
Requirements:  
(a)  Maximum change in volume 20 per cent ; 
(b)  Maximum change in tensile strength 25 per cent ; 
(c)  Maximum change in elongation at break 30 per cent . 
After sto rage in air with a temperature of 40 °C for a period of 48 hours the 
mass compared to the original value may not decrease more than 5 per cent.  
4.3.1.3.  Resistance to ageing according to ISO 188 with the following conditions:  
(a)  Temperature: 115 °C (te st temperature = maximum operating 
temperature minus 10 °C) ; 
(b) Exposure period: 336 hours . 
 Requirements:  
(a)  Maximum change in tensile strength 35 per cent ; 
(b)  Maximum change in elongation at break -30 per cent and +10 per 
cent. E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 8  
 
76 4.3.2.  Tensile stren gth and elongation specific for polyamide 6 material  
4.3.2.1.  Tensile strength and elongation at break according to ISO 527 -2 with the 
following conditions:  
(a)  Specimen type: type 1 BA ; 
(b)  Tensile speed: 20 mm/min . 
 The material has to be conditioned  for at least 21 days at 23 °C and 
50 per cent relative humidity prior to testing.  
Requirements:  
(a)  Tensile strength not less than 20 MPa ; 
(b)  Elongation at break not less than 50 per cent.  
4.3.2.2.  Resistance to n -pentane according to ISO 1817 with t he following conditions:  
(a)  Medium: n -pentane ; 
(b)  Temperature: 23 °C (tolerance according to ISO 1817) ; 
(c)  Immersion period: 72 hours .  
Requirements:  
(a)  Maximum change in volume 2 per cent ; 
(b) Maximum change in tensile strength 10 per cent ; 
(c)  Maximum change in elongation at break 10 per cent . 
After storage in air with a temperature of 40 °C for a period of 48 hours 
the mass compared to the original value may not decrease more than 5 per 
cent.  
4.3.2.3.  Resistance to ageing according to ISO 188 with the following conditions:  
(a)  Temperature: 115 °C (test temperature = maximum operating 
temperature minus 10 °C) ; 
(b) Exposure period: 24 and 336 hours . 
After ageing the specimens have to be conditioned at 23 °C and 50 per cent 
relative humidity for at least 21 days prior to carrying out the tensile test 
according to paragraph 4.3.2.1. above.  
Requirements:  
(a)  Maximum change in tensile strength 35 per cent after 336 hours 
ageing compared to the tensile strength of the 24 hours aged 
material ; 
(b) Maximum change in elongation at break 25 per cent after 336 hours 
ageing compared to the elongation at break of the 24 hours aged 
material.  
4.4.  Specifications and test method for the cover  
4.4.1.1.  Tensile strength and elongation at break according to IS O 37. Tensile 
strength not less than 20 MPa and elongation at break not less than 250 per 
cent.  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 8  
 
 77 4.4.1.2.  Resistance to n -hexane according to ISO 1817 with the following conditions:  
(a)  Medium: n -hexane ; 
(b)  Temperature: 23 °C (tolerance according to IS O 1817) ; 
(c) Immersion period: 72 hours .  
Requirements:  
(a) Maximum change in volume 30 per cent ; 
(b) Maximum change in tensile strength 35 per cent ; 
(c)  Maximum change in elongation at break 35 per cent . 
4.4.1.3.  Resistance to ageing according to ISO 18 8 with the following conditions:  
(a)  Temperature: 115  °C (test temperature = maximum operating 
temperature minus 10 °C) ; 
(b)  Exposure period: 336 hours .  
Requirements:  
(a)  Maximum change in tensile strength 25 per cent ; 
(b)  Maximum change in elongation  at break -30 per cent and +10 per 
cent.  
4.4.2.  Resistance to ozone  
4.4.2.1.  The test shall be performed in compliance with standard ISO 1431/1 -
1:2004/Amd 1:2009.  
4.4.2.2.  The test -pieces, which have to be stretched to an elongation of 20 per cent 
shall be exposed to air of 40 °C and a relative humidity of 50 per cent ± 10 
per cent with an ozone concentration of 50 parts per hundred million during 
120 hours.  
4.4.2.3.  Cracking of the test pieces is not allowed.  
4.4.3.  Specifications and test method for the cover made of polyamide 6 material  
4.4.3.1.  Tensile strength and elongation at break according to ISO 527 -2 with the 
following conditions:  
(a)  Specimen type: type 1 BA ; 
(b) Tensile speed: 20 mm/min . 
The material has to be conditioned for at least 21  days at 23 °C and 50 
per cent relative humidity prior to testing.  
Requirements:  
(a)  Tensile strength not less than 20 MPa ; 
(b)  Elongation at break not less than 100 per cent.  
4.4.3.2.  Resistance to n -hexane according to ISO 1817 with the following co nditions:  
(a)  Medium: n -hexane ; 
(b)  Temperature: 23 °C (tolerance according to ISO 1817) ; 
(c)  Immersion period: 72 hours .  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 8  
 
78 Requirements:  
(a)  Maximum change in volume 2 per cent ; 
(b)  Maximum change in tensile strength 10 per cent ; 
(c) Maximum change in  elongation at break 10 per cent .  
4.4.3.3.  Resistance to ageing according to ISO 188 with the following conditions:  
(a)  Temperature: 115 °C (test temperature = maximum operating 
temperature minus 10 °C) ; 
(b) Exposure period: 24 and 336 hours . 
After agei ng the specimens have to be conditioned for at least 21 days before 
carrying out the tensile test according to paragraph 4.3.1.1. above.  
Requirements:  
(a) Maximum change in tensile strength 20 per cent after 336 hours 
ageing compared to the tensile strengt h of the 24 hours aged material ; 
(b) Maximum change in elongation at break 50 per cent after 336 hours 
ageing compared to the elongation at break of the 24 hours aged 
material.  
4.5.  Specifications for uncoupled hose  
4.5.1.  Gas-tightness (permeability)  
4.5.1.1.  A hose at a free length of 1 m has to be connected to a container filled with 
liquid propane, having a temperature of 23 °C ± 2 °C.  
4.5.1.2.  The test has to be carried out in compliance with the method described in 
standard ISO 4080.  
4.5.1.3.  The leakage through the wall of the hose shall not exceed 95 cm3 of vapour 
per metre of hose per 24 h. Leakage of the liquid LPG shall be measured and 
be lower than the gaseous leakage (95 cm3/hour).  
4.5.2.  Resistance at low temperature  
4.5.2.1.  The t est has to be carried out in compliance with the method described in 
standard ISO 4672 method B.  
4.5.2.2.  Test temperature: -25 °C ± 3 °C.  
4.5.2.3.  No cracking or rupture is allowed.  
4.5.3.  Resistance at high temperature  
4.5.3.1.  A piece of hose, p ressurized at WP, with a minimal length of 0.5 m shall  be 
put in an oven at a temperature of 125 °C ± 2 °C during 24 hours.  
4.5.3.2.  No leakage is allowed.  
4.5.3.3.  After the test the hose shall withstand the tes t pressure of 2.25 WP during 
10 minutes.  No leakage is allowed.  
4.5.4.  Bending test  
4.5.4.1.  An empty hose, at a length of approximately 3.5 m shall  be able to withstand 
3,000 times the hereafter prescribed alternating -bending -test without 
breaking.  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 8  
 
 79  After the test the hose shall  be capable of withstanding the test pressure as 
mentioned in paragraph 4.5.5.2. below.  
  Figure 4  
(example only)  
(a = 102 mm; b  = 241 mm)  
  
4.5.4.2.  The testing machine (see Figure 4) shall consist of a steel frame, provided 
with two wooden wheels, with a rim -width of approximately 130 mm.  
The circumference of the wheels shall  be grooved for the guidance of the 
hose. The radius of the wheels, measured to the bottom of the groove, shall  
be 102 mm.  
The longitudinal median planes of both wheels shall  be in the same  vertical 
plane. The distance between the wheel -centres shall  be vertical 241 mm and 
horizontal 102 mm.  
Each wheel shall  be able to rotate freely round its pivot -centre.  
A propulsion mechanism pulls the hose over the wheels at a speed of four 
complete mo tions per minute.  
4.5.4.3.  The hose shall be S -shape -like installed over the wheels (see Figure 4).  
The end, which runs over the upper wheel, shall be furnished with a 
sufficient mass as to achieve a complete snuggling of the hose against the 
wheels. Th e part that runs over the lower wheel is attached to the propulsion 
mechanism.  
The mechanism shall  be so adjusted, that the hose travels a total distance of 
1.2 m in both directions.  
4.5.5.  Hydraulic test pressure and determination of the minimum burst -pressure  
4.5.5.1.  The test has to be carried out in compliance with the method described in 
standard ISO 1402.  
4.5.5.2.  The test pressure of 2.25 WP shall be applied during 10 minutes, without any 
leakage.  
4.5.5.3.  The burst pressure shall not be less than 10 ,000 kPa and at least 2.25 WP.  
4.6.  Couplings  
4.6.1.  The couplings shall be made from steel or brass and the surface shall  be 
corrosion -resistant.  
4.6.2.  The couplings shall  be of the crimp -fitting type and made up of a hose -
coupling or banjo b olt. The sealing shall be resistant to LPG and comply with 
paragraph 4.3.1.2. above.  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 8  
 
80 4.6.3.  The banjo bolt shall comply with DIN 7643.  
4.7.  Assembly of hose and couplings  
4.7.1.  The hose assembly has to be subjected to an impulse test in compliance wi th 
standard ISO 1436.  
4.7.1.1.  The test has to be completed with circulating oil having a temperature of 
93 °C, and a minimum pressure of WP.  
4.7.1.2.  The hose has to be subjected to 150,000 impulses.  
4.7.1.3.  After the impulse -test the hose has to w ithstand the test pressure as 
mentioned in paragraph 4.5.5.2.  
4.7.2.  Gas-tightness  
4.7.2.1.  The hose assembly (hose with couplings) has to withstand during five 
minutes a gas pressure of 1.5 WP without any leakage.  
4.8.  Markings  
4.8.1.  Every hose shall bear, at intervals of not greater than 0.5 m, the following 
clearly legible and indelible identification markings consisting of characters, 
figures or symbols.  
4.8.1.1.  The trade name or mark of the manufacturer.  
4.8.1.2.  The year and month of fab rication.  
4.8.1.3.  The size and type -marking.  
4.8.1.4.  The identification marking "L.P.G. Class 0".  
4.8.2.  Every coupling shall bear the trade name or mark of the assembling 
manufacturer.E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/T RANS/505/Rev.1/Add.66/Rev.4  
Annex 9  
81 Annex 9  
  Provisions regarding the approval of the filling uni t 
1. Definition:  See paragraph 2.16. of this Regulation.  
2. Component classification (according to Figure 1, para. 2.  of this Regulation ): 
Filling unit:  Class 3  
 Non-return valve:  Class 3  
3. Classification pressure: 3,000 kPa.  
4. Design temperatures:  
-20 °C to 65 °C  
For temperatures exceeding the above -mentioned values, special tests 
conditions are applicable.  
5. General design rules:  
Paragraph 6.15.2., Provisions regarding the electrical insulation.  
 Paragraph 6.15.10., Provisions regarding the filling  unit. 
6. Applicable test procedures:  
Overpressure  test Annex 15, para. 4 . 
External leakage  Annex 15, para. 5 . 
High temperature  Annex 15, para. 6 . 
Low temperature  Annex 15, para. 7 . 
Seat leakage test  Annex 15, para. 8. 
Endurance     Annex 15, para. 9. 
(with  6,000 operation cycles)  
LPG compatibility  Annex 15, para. 11 .** 
Corrosion resistance  Annex 15, para. 12 .* 
Resistance to dry heat  Annex 15, para. 13 .  
Ozone ageing   Annex 15, para. 14 .  
Creep  Annex 15, para. 15 .** 
Temperature cycle  Annex 15, para. 16 .** 
Impact test  paragraph 7. of this annex  
7. Impact test requirements for the Euro filling unit  
7.1. General requirements  
 The filling unit shall be subjected to an impact test of 10  J. E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 9  
 
82 7.2. Test procedure  
A hardened steel mass of 1 kg shall be dropped from a height of 1  m so as to 
deliver the impact velocity 4.4 m/s.  This shall be achieved by mounting the 
mass in a pendulum.  
The filling unit shall be installed horizontally on a solid object. The impact of 
the mass shall be on the centre of the protruding part  of the filling unit.  
7.3. Test interpretation  
The filling unit shall comply with the external leak test and seat leak test at 
ambient temperature.  
7.4. Re-testing  
If the filling unit fails the test, 2 samples of the same component shall be 
submitted to th e impact test.  If both samples pass the test, the first test shall 
be ignored.  In the event where one or both fail the re -test, the component 
shall not be approved.  
Remarks:  
(a) The overpressure test has to be performed on each non -return valve.  
(b) The endurance test shall be carried out with a nozzle specifically 
intended for the filling unit under test.  6,000 cyles shall be applied 
according to the following procedure:  
(i) Connect the nozzle to the connector and open the filling unit 
system;  
(ii) Leav e in open situation for at least 3 seconds;  
(iii) Close  the filling unit and disconnect the nozzle.  
Figure 1  
Connecting area of the bayonet filling unit  
 
 
 
 
 E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 9  
 
 83 Figure 2  
Connecting area of the Dish filling unit   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Figure 3  
Connecting area of th e light vehicle Euro filling unit  
 
 
 
 
 
 
E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 9  
 
84 Figure 4  
Connecting area of the ACME filling unit  
 
 
 
 
 
 
 
 
 
 
 
 E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 9  
 
 85 Figure 5  
Connecting area of the heavy -duty vehicle Euro filling unit  
Dimensions in millimetres  
 
Keys:  
1  Nozzle sealing surface  
2  Minimum valve trave l  
3  General tolerance  
 
 
________________  
  * Only for metallic parts.  
  ** Only for -non-metallic parts.  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRAN S/505/Rev.1/Add.66/Rev.4  
Annex 10  
86 Annex 10  
  Provisions regarding the approval of LPG containers  
The meaning of symbols and terms used in this annex  
Ph = hydraulic test pressure in  kPa; 
Pr = container bursting pressure measured in the bursting test, in kPa;  
Re = minimum yield stress in N/mm2 guaranteed by the material standard;  
Rm = minimum tensile strength in N/mm2 guaranteed by the material 
standard  
Rmt = actual tensile strength, in N/mm2; 
a = calculated minimum thickness of the cylindrical shell wall, in mm;  
b = calculated minimum thickness of dished ends, in mm;  
D = nominal outside diameter of the container, in mm;  
R = inside radius of the dished end of the standard cylindrical c ontainer, 
in mm;  
r = inside knuckle of the dished end of the standard cylindrical 
container, in mm;  
H = outside height of dished part of container end, in mm;  
h = height of cylindrical part of dished end, in mm;  
L = length of container's stress -resistant s hell, in mm;  
A = elongation value (per cent) of parent material;  
V0 = initial volume of the container at the moment when the pressure is 
increased in the burst test, in dm3; 
V = final volume of the container on bursting, in dm3; 
g = gravity, in m/s2; 
c = shape factor;  
Z = stress reduction factor.  
1. Technical requirements  
1.1. Cylinders covered by this annex are as follows:  
LPG -1 Metal containers  
LPG -4 All -Composite containers  
1.2. Dimensions  
For all dimensions without indication of tolerances, general tole rances of 
EN 22768 -1 shall apply.  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 10  
 
 87 1.3. Materials  
1.3.1.  The material used for the manufacture of the stress -resistant container shells 
shall  be steel as specified in Euronorm EN 10120 (however, other materials 
may be used provided that the container has th e same safety characteristics, 
to be certified by the Type Approval Authorities granting type approval).  
1.3.2.  The parent material refers to the material in the state before any specific 
transformation with regards to the manufacturing process has been ca rried 
out. 
1.3.3.  All components of the container body and all the parts welded thereto shall  
be made of mutually compatible materials.  
1.3.4.  The filler materials shall  be compatible with the parent material so as to form 
welds with properties equivalent to those specified for the parent material 
(EN 288-39). 
1.3.5.  The container manufacturer shall  obtain and provide:  
(a) For metal containers: chemical cast analysis certificates;  
(b) For all-composite containers: chemical resistance analysis certificates 
related to tests performed according to the requirements of 
Appendix  6;  
(c) Mechanical  properties of the material in respect of the steels or other 
materials applied for the construction of the parts subject to pressure.  
1.3.6.  The inspection authority shall have the opportunity to make independent 
analyses.  These analyses shall  be carried out either on specimens taken from 
the materials as supplied to the container manufacturer or on the finished 
containers.  
1.3.7.  The manufacturer shall  make available to  the inspection authority the results 
of metallurgical and mechanical tests and analyses of parent and filler 
materials carried out on welds and shall  also provide it with a description of 
the welding methods and processes which can be regarded as represen tative 
of the welds made during production.  
1.4. Design temperatures and pressures  
1.4.1.  Design temperature  
The design operating temperature of the container shall be from -20 °C to 
65 °C.  For extreme operating temperatures exceeding the above -mentioned  
temperatures special test conditions are applicable which shall be agreed 
upon with the competent authority.  
1.4.2.  Design pressure  
The design operating pressure of the container shall be: 3,000 kPa.  
1.5. The heat treatment procedures, on metal containers  only, shall be according 
to the following requirements:  
1.5.1.  The heat treatment shall be carried out on the parts or on the complete 
container.  
1.5.2.  Those parts of a container having been deformed by more than 5 per cent 
shall  be submitted to the fol lowing heat treatment: normalize.  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 10  
 
88 1.5.3.  Containers with a wall thickness  5 mm shall  be submitted to the following 
heat treatment:  
1.5.3.1.  Hot-rolled and normalized material:  stress relieve or normalize;  
1.5.3.2.  Material  of a different kind:  normaliz e. 
1.5.4.  The manufacturer shall  submit the procedure for the heat treatment used.  
1.5.5.  Localized heat treatment of a completed container is not permitted.  
1.6. Calculation of the parts under pressure  
1.6.1.  Calculation of the parts under pressure for me tal containers.  
1.6.1.1.  The wall thickness of the cylindrical shell of the containers shall  not be less 
than that calculated by the formula:  
1.6.1.1.1.  Containers without longitudinal welds:  
h eh
heh
P R 1500DP
P3/4R2000DPa

 
 
1.6.1.1.2.  Containers with longitudinal welds:  
h eh
heh
PzR 1500DP
Pz3/4R2000DPa

 
 
(a)   z =  0.85 where the manufacturer radiographs each weld intersection 
and 100  m of the adjacent longitudinal weld and 50 mm (25 mm each 
side of the intersection) of the adjacent circumferential weld.  
This test has to be p erformed per machine at the beginning and end of 
each work shift period from continuous production.  
(b)   z =  1 where each weld intersection and 100 mm of the adjacent 
longitudinal weld and 50 mm (25 each side of the intersection) of the 
adjacent circumfe rential weld is spot radiographed.  
This test has to be performed at 10 per cent of the container 
production: the containers to be tested are chosen randomly.  Should 
these radiograph tests reveal unacceptable defects, as defined in 
paragraph 2.4.1.4.  of th is annex , all the necessary steps shall  be taken 
to examine the production run in question and eliminate the defects.  
1.6.1.2.  Dimensions and calculations of ends (see figures in Appendix 4 to this 
annex).  
1.6.1.2.1.  The container ends shall be in one piec e, shall encave to the pressure and 
shall have either a torispherical or an elliptical form (examples are given in 
Appendix  5 of this annex ). E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 10  
 
 89 1.6.1.2.2.  The container ends shall  fulfil the following conditions:  
Torispherical ends  
simultaneous limits:  0.00 3 D  b  0.08 D  
r  0.1 D  
R  D 
H  0.18 D  
r  2 b 
h  4 b 
h  0.15 D  (not applicable for containers as shown in Appendix 2 to this 
annex, Figure 2a)  
Elliptical ends  
simultaneous limits:  0.003 D  b  0.08 D  
H  0.18 D  
h  4 b 
h  0.15 D  (not applicable for containers as shown in Appendix 2 to this 
annex, Figure 2a)  
1.6.1.2.3.  The thickness of these barrelled ends shall  not be in toto  less than the figure 
calculated by means of the following formula:  
CR 1500DPb
eh
 
 
 The shape factor C to be used  for full ends is given in the table and in the 
graphs contained in Appendix 4 to this annex.  
The wall thickness of the cylindrical edge of the ends may not be less or 
differ more than 15 per cent from the smallest wall thickness of the shell.  
1.6.1.3.  The nominal wall thickness of the cylindrical part and of the barrelled end 
may not, under any circumstances; be less than:  
mm1250D
 
 
 with a minimum of 1.5 mm.  
1.6.1.4.  The shell of the container may be made up of one, two or three parts.  Whe n 
the shell is made up from two or three parts, the longitudinal welds shall  be 
shifted/rotated with a minimum of 10 times the thickness of the container 
wall (10   a).  The ends shall  be in one piece and convex.  
1.6.2.  Calculation of the parts under press ure for all -composite containers  
 The stresses in the container shall be calculated for each container type. The 
pressures used for these calculations shall be the design pressure and burst 
test pressure.  The calculations shall use suitable analysis techn iques to 
establish stress distribution throughout the container.  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 10  
 
90 1.7. Construction and workmanship  
1.7.1.  General requirements  
1.7.1.1.  The manufacturer shall demonstrate by having a suitable quality control 
system that he has and maintains the manufactur ing facilities and processes 
to ensure that containers produced satisfy the requirements of this annex.  
1.7.1.2.  The manufacturer shall  ensure through adequate supervision that the parent 
materials and pressed parts used to manufacture the containers are f ree from 
defects likely to jeopardize the safe use of the containers.  
1.7.2.  Parts subjected to pressure  
1.7.2.1.  The manufacturer shall  describe the welding methods and processes used and 
indicate the inspections carried out during production.  
1.7.2.2.  Technical welding requirements  
The butt welds shall  be executed by an automatic welding process.  
The butt welds on the stress -resistant shell may not be located in any area 
where there are changes of profile.  
Angle welds may not be superimposed on butt welds  and shall  be at least 
10 mm away from them.  
Welds joining parts making up the shell of the container shall  satisfy the 
following conditions (see figures given as examples in Appendix 1 to this 
annex):  
Longitudinal  weld:  this weld is executed in the form of a butt weld on the 
full section of the material of the wall;  
Circumferential  weld:  this weld is executed in the form of a butt weld on the 
full section of the material of the wall.  A joggle weld is considered to be a 
special type of butt weld;  
Welds  of the studded valve plate or ring shall be carried out according to 
Appendix 1, Figure 3.  
A weld fixing the collar or supports to the container shall be either a butt or 
angle weld.  
Welded mounting supports shall be welded in the circumferential way.  The 
welds shall be strong enough to withstand vibration, braking actions and 
outside forces of at least 30 g in all directions.  
In this case of butt welds, the misalignment of the joint faces may not exceed 
one-fifth of the thickness of the walls (1/5 a).  
1.7.2 .3. Inspection of welds  
The manufacturer shall  ensure that the welds show continuous penetration 
without any deviation of the weld seam, and that they are free from defects 
likely to jeopardize the safe use of the container.  
For containers in two pieces, a  radiographical  test has to be performed on the 
circumferential butt welds over 100 mm, with the exception of the welds in 
conformity with joggle weld on page 1 of Appendix 1 to this annex.  On one 
container selected at the beginning and end of each shift period from continuous 
production and, in the event of production being interrupted for a period of more 
than 12 hours, the first container welded should also be radiographed.  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 10  
 
 91 1.7.2.4.  Out-of-roundness  
The out -of-roundness of the cylindrical shell of the c ontainer shall  be limited 
so that the difference between the maximum and minimum outside diameter 
of the same cross -section is not more than 1 per cent of the average of those 
diameters.  
1.7.3.  Fittings  
1.7.3.1.  The supports shall  be manufactured and attac hed to the container body in 
such a way as not to cause dangerous concentrations of stresses or be 
conduc tive to the collection of water.  
1.7.3.2.  The base of the container shall  be sufficiently strong and made of metal 
compatible with the type of steel us ed for the container.  The form of the base 
shall  give the container sufficient stability.  
The top edge of the base shall  be welded to the container in such a way as not 
to be conducive to the collection of water nor to allow water to penetrate 
between the  base and the container.  
1.7.3.3.  A reference mark shall be affixed on the containers to ensure their correct 
installation.  
1.7.3.4.  Where fitted, identification plates shall  be fixed on to the stress resistant shell 
and shall not be removable.  All the ne cessary corrosion prevention measures 
shall  be taken.  
1.7.3.5.  The container shall have provisions to mount a gas -tight housing or kind of 
protection device over the container accessories.  
1.7.3.6.  Any other material, however, may be used for the manufactu re of the 
supports, provided that its strength is assured and that all risk of the container 
end corroding is eliminated.  
1.7.4.  Fire protection  
1.7.4.1.  A container representative of the type of container, all accessories fitted on it 
and any added insula tion or protective material shall be covered by a bonfire 
test as specified in paragraph 2.6. of this annex.  
2.  Tests 
Tables 1 and 2 below give an overview of the tests to be performed on the 
LPG containers on prototypes as well as during the production p rocess 
according to their nature.  All tests shall be performed at ambient temperature 
of 20  °C  5 °C, unless otherwise stated.  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 10  
 
92 Table 1 
Overview of tests to be performed on metal containers  
Test to be performed  Production  
Batch tests  Number of containers  
to be tested for type  approval  Test description  
Tensile test  1 per batch  2 1 See para. 2.1.2.2.  
Bend test  1 per batch  2 1 See para. 2.1.2.3.  
Burst test   2 See para. 2.2.  
Hydraulic test  Each  container  100 %  See para. 2.3.  
Bonfire test   1 See para. 2.6.  
Radiographic 
examination  1 per batch  100 %  See para. 2.4.1.  
Macroscopic examination  1 per batch  2 1 See para. 2.4.2.  
Inspection of welds  1 per batch  100 %  See para. 1.7.2.3.  
Visual inspect ion of the 
parts of the container  1 per batch  100 %   
 1 These test pieces can be taken from one container . 
Note 1:  6 containers shall be submitted for type approval.   
Note 2:  On one of these prototypes the volume of the container and the wall thickness 
of each part of the container shall be determined.  
Table 2 
Overview of tests to be performed on all -composite containers  
Test to be performed  Production  
Batch tests  Number of containers  
to be test ed for 
type approval  Test description  
Burst test  1 per batch  3 See para. 2.2.  
Hydraulic test  Each container  All containers  See para. 2.3.  
 
Ambient temperature pressure 
cycling test  1 per 5 batches  3 See para. 2.3.6.1.  
High temperature pressure 
cyclin g test   1 See para. 2.3.6.2.  
External leak test   1 See para. 2.3.6.3.  
Permeation test   1 See para. 2.3.6.4.  
LPG cycling test   1 See para. 2.3.6.5.  
High temperature creep test   1 See para. 2.3.6.6.  
Bonfire test   1 See para. 2.6.  
Impact test   1 See pa ra. 2.7.  
Drop test   1 See para. 2.8.  
Boss torque test   1 See para. 2.9.  
Acid environment test   1 See para. 2.10.  
Ultra -violet radiation test   1 See para. 2.11.  
 E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 10  
 
 93 2.1. Mechanical tests  
2.1.1.  General requirements  
2.1.1.1.  Frequency of the mechanical te sts 
2.1.1.1.1.  The frequency of the tests for metal containers shall be: 1  container from 
each batch during production and for type testing, see Table 1.  
 Test pieces which are not flat shall be flattened by a cold process.  
 In test pieces containing a we ld, the weld shall be machined to trim the 
surplus.  
 Metal containers shall be subjected to the tests as described in Table 1.  
 Test pieces from  containers with one circumferential weld only (two 
sections) shall be taken from the places shown in Appendix  2, Figure 1.  
 Test pieces from  containers with longitudinal and circumferential welds 
(three or more sections) shall be taken from the places shown in Appendix 2, 
Figure 2.  
2.1.1.1.2.  The frequency of the tests for all -composite containers shall be:  
(a) During production:  1 container from each batch ; 
(b) For type testing, see Table 2 . 
2.1.1.2.  All the mechanical tests for checking the properties of the parent metal and 
welds of the stress -resistant shells of the container are carried out on test 
pieces take n from finished containers.  
2.1.2.  Types of tests and evaluation of test results  
2.1.2.1.  Each sample container is subjected to the following tests:  
2.1.2.1.1.  Containers with longitudinal and circumferential welds (three sections) on 
test-pieces taken fro m the places shown in Figure 1 of Appendix 2 to this 
annex:  
(a) One tensile test on parent material; the test piece to be taken in the 
longitudinal direction (if this is not possible, it may be taken in a 
circumferential direction);  
(b) One tensile test on  parent material of the bottom;  
(c) One tensile test perpendicular to the longitudinal weld;  
(d) One tensile test perpendicular to the circumferential weld;  
(e) One bend test on the longitudinal weld, the inner surface in tension;  
(f) One bend test on the longitudinal weld, the outer surface in tension;  
(g) One bend test on the circumferential weld, the inner surface in 
tension;  
(h) One bend test on the circumferential weld, the outer surface in 
tension; and  
(i) One macroscopic test of a welded section;  
(ml, m2) A minimum of two macroscopic tests of valve boss/plate sections in 
case of the sidewall mounted valves referred to in paragraph 2.4.2. below.  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 10  
 
94 2.1.2.1.2.  Containers with circumferential welds only (two sections) on test -pieces 
taken from the places sh own in Figures 2a and 2b of Appendix 2 to this 
annex:  
The tests as specified in paragraph 2.1.2.1.1. above with the exception of (c), 
(e) and (f) which are not applicable.  The test -piece for the tensile test on 
parent material shall be taken from (a) or ( b) as mentioned in 
paragraph  2.1.2.1.1. above.  
2.1.2.1.3.  Test-pieces which are not sufficiently flat shall  be flattened by cold pressing.  
2.1.2.1.4.  In all test pieces containing a weld, the weld is machined to trim the surplus.  
2.1.2.2.  Tensile test  
2.1.2.2.1.  Tensile test on parent metal  
2.1.2.2.1.1.  The tensile test shall be carried out in accordance with Euronorms EN 876, 
EN 895 and EN  10002 -1. 
2.1.2.2.1.2.  The values determined for yield stress, tensile strength and elongation after 
break shall  comply  with the characteristics of the metal as required in 
paragraph  1.3. of this annex.  
2.1.2.2.2.  Tensile test on welds  
2.1.2.2.2.1.  This tensile test perpendicular to the weld shall  be carried out on a test -piece 
having a reduced cross -section 25 mm in width  for a length extending up to 
15 mm beyond the edges of the weld, as shown in Figure 2 of Appendix 3 to 
this annex.  
Beyond this central part the width of the test -piece shall  increase 
progressively.  
2.1.2.2.2.2.  The tensile strength value obtained shall  meet the minimum levels required 
by EN  10120.  
2.1.2.3.  Bend test  
2.1.2.3.1.  The bend  test shall be carried out in accordance with standards ISO 
7438:2005 and ISO 7799:1985 and ISO 5173:2009 + Amd 1:2011 for welded 
parts. The bend tests shall be carried out o n the inner surface in tension and 
the outer surface in tension.  
2.1.2.3.2.  Cracks shall  not appear in the test -piece when it is bent round a mandrel as 
long as the inside edges are separated by a distance not greater than the 
diameter of the mandrel +3a ( see Figure 1 of Appendix 3 to this annex).  
2.1.2.3.3  The ratio (n) between the diameter of the mandrel and the thickness of the 
test piece shall  not exceed the values given in the following table:  
Actual tensile strength  
Rt in (N/mm2) Value (n)  
Up to 440 inclusive  
Above 440 to 520 inclusive  
Above 520 2 
3 
4 
 E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 10  
 
 95 2.1.2.4.  Retesting for the tensile and bend tests  
2.1.2.4.1.  Retesting is permitted for the tensile and bend test.  A second test shall 
consist of two test pieces taken from the same container.  
If the results of these tests are satisfactory, the first test shall be ignored.  
In the event where one or both of the retests fail to meet the requirements, the 
batch shall be rejected.  
2.2. Burst test under hydraulic pressure  
2.2.1.  Test conditions  
Containers s ubjected to this test shall  bear the inscriptions which it is 
proposed to affix on the section of the container subjected to pressure,  
2.2.1.1.  The burst test under hydraulic pressure shall  be carried out with equipment 
which enables the pressure to be inc reased at an even rate, until the container 
bursts and the change in pressure over time to be recorded.  The maximum 
flow rate during the test should not exceed 3 per cent of the capacity of the 
container per minute.  
2.2.2.  Test interpretation  
2.2.2.1.  The criteria adopted for the interpretation of the burst test are as follows:  
2.2.2.1.1.  Volumetric  expansion of the metal container; it equals: volume of water used 
between the time when the pressure starts to rise and the time of bursting;  
2.2.2.1.2.  Examin ation of the tear and the shape of its edges;  
2.2.2.1.3.  Bursting pressure.  
2.2.3.  Test acceptance conditions  
2.2.3.1.  The measured bursting pressure (P r) shall  not under any circumstances be less 
than 2.25  3,000 = 6,750 kPa.  
2.2.3.2.  The specific change  in the volume of the metal container at the time of 
bursting shall  not be less than:  
20 per cent if the length of the metal container is greater than the diameter;  
17 per cent if the length of the metal container is equal to or less than the 
diameter.  
8 per cent in the case of a special metal container as shown in Appendix  5 to 
this annex , page  1, Figures A, B and C.  
2.2.3.3.  The burst test shall  not cause any fragmentation of the container.  
2.2.3.3.1.  The main fracture shall  not show any brittleness, i.e.  the edges of the fracture 
shall  not be radial but shall  be at an angle to a diametrical plane and display a 
reduction of area throughout their thickness.  
2.2.3.3.2.  For metal containers the fracture shall  not reveal an inherent defect in the 
metal.  The w eld shall  be at least as strong as the original metal but 
preferably stronger.  
 For all -composite containers, the fracture shall not reveal any defects in the 
structure.  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 10  
 
96 2.2.3.4.  Retesting for the burst test  
 Retesting is permitted for the burst test.  A s econd burst test shall be 
performed on two containers which have been produced successively to the 
first container within the same batch.  
If the results of these tests are satisfactory, the first test shall be ignored.  
In the event where one or both of the  retests fail to meet the requirements, the 
batch shall be rejected.  
2.3. Hydraulic test  
2.3.1.  The containers representative of the type of container submitted for approval 
(without accessories but with the outlets closed off) shall withstand an inner 
hydraulic pressure of 3,000 kPa without leakages or becoming permanently 
distorted, according to the following requirements:  
2.3.2.  The water pressure in the container shall  increase at an even rate until the test 
pressure of 3,000 kPa is reached.  
2.3.3.  The container shall  remain under the test pressure long enough to make it 
possible to establish that the pressure is not falling off and that the container 
can be guaranteed leak proof . 
2.3.4.  After the test the container shall  show no signs of permanent defor mation.  
2.3.5.  Any container tested which does not pass the test shall  be rejected.  
2.3.6.  Additional hydraulic tests to be performed on all -composite containers  
2.3.6.1.  Ambient temperature pressure cycling test  
2.3.6.1.1.  Test procedure  
The finished cont ainer shall be pressure cycled to a maximum of  
20,000 cycles, according to the following procedure:  
(a) Fill the container to be tested with a non -corrosive fluid such as oil, 
inhibited water or glycol;  
(b) Cycle  the pressure in the container between not more than 300 kPa 
and not less than 3,000 kPa at a rate not to exceed 10 cycles per 
minutes.  
This cycle shall be performed at least 10,000 times and continued until 
20,000 times unless a leak before break appears;  
(c) The number of cycles to failure shall be reported, along with the 
location and description of the failure initiation.  
2.3.6.1.2.  Test interpretation  
Before reaching 10,000 cycles, the container shall not fail or leak.  
After completing 10,000 cycles, the container may leak before break.  
2.3.6.1 .3. Retesting  
Retesting is permitted for the ambient temperature pressure cycling test.  
A second test shall be performed on two containers which have been 
produced successively to the first container within the same batch.  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 10  
 
 97 If the results of these tests ar e satisfactory, the first test shall be ignored.  
In the event where one or both of the retests fail to meet the requirements, the 
batch shall be rejected.  
2.3.6.2.  High temperature pressure cycling test  
2.3.6.2.1.  Test procedure  
Finished containers shall be cycle tested, without showing evidence of 
rupture, leakage, or fibre unravelling, as follows:  
(a) Fill the container to be tested with a non -corrosive fluid such as oil, 
inhibited water or glycol;  
(b) Condition for 48 hours at 0 kPa, 65 °C, and 95  per cent or greater 
relative humidity ; 
(c) Hydrostatically pressurize for 3,600 cycles not exceeding 10  cycles 
per minute, between not more than 300 kPa and not less than  
3,000 kPa at 65  °C and 95  per cent humidity . 
Following the pressure cycling at high tempe rature, containers shall be 
submitted to the external leak test and then hydrostatically pressurized to 
failure in accordance with the burst test procedure.  
2.3.6.2.2.  Test interpretation  
 The container shall comply with the external leak test requirements  as 
defined in paragraph 2.3.6.3.  below.  
 The container shall achieve a minimum burst pressure of 85  per cent of the 
burst pressure.  
2.3.6.2.3.  Retesting   
Retesting is permitted for the high temperature pressure cycling test.  
A second test shall be perform ed on two containers which have been 
produced successively to the first container within the same batch.  
If the results of these tests are satisfactory, the first test shall be ignored.  
In the event where one or both of the retests fail to meet the require ments, the 
batch shall be rejected.  
2.3.6.3.  External leak test  
2.3.6.3.1.  Test procedure  
While under 3,000 kPa pressure, the container shall be submerged in soapy 
water to detect leakage (bubble test).  
2.3.6.3.2.  Test interpretation  
The container shall no t show any leakage.  
2.3.6.3.3.  Retesting  
Retesting is permitted for the external leak test.  
A second test shall be performed on two containers which have been 
produced successively to the first container within the same batch.  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 10  
 
98 If the results of these tests  are satisfactory, the first test shall be ignored. In 
the event where one or both of the retests fail to meet the requirements, the 
batch shall be rejected.  
2.3.6.4.  Permeation test  
2.3.6.4.1.  Test procedure  
All the tests shall be performed at 40  °C on a container fuelled with 
commercial propane at 80 per cent of its water capacity.  
The test shall be held during at least 8 weeks until the steady state permeation 
of the structure is observed during at least 500 hours.  
 Then, the rate of the container weight  loss shall be measured.  
 The graph of mass change per number of days shall be recorded.  
2.3.6.4.2.  Test interpretation  
The rate of mass loss shall be less than 0.15 g/hour.  
2.3.6.4.3.  Retesting  
 Retesting is permitted for the permeation test.  
A second tes t shall be performed on two containers which have been 
produced successively to the first container within the same batch.  
If the results of these tests are satisfactory, the first test shall be ignored.  In 
the event where one or both of the retests fail to meet the requirements, the 
batch shall be rejected.  
2.3.6.5.  LPG cycling test  
2.3.6.5.1.  Test procedure  
A container having successfully passed the permeation test shall be submitted 
to an ambient temperature pressure cycling test according to the requir ements 
of paragraph  2.3.6.1. of this annex.  
The container shall be sectioned and the liner / end boss interface shall be 
inspected.  
2.3.6.5.2.  Test interpretation  
The container shall comply with the ambient temperature pressure cycling 
test requirements.  
Inspection of the liner / end boss interface of the container shall not reveal 
any evidence of deterioration, such as fatigue cracking or electrostatic 
discharge.  
2.3.6.5.3.  Retesting  
 Retesting is permitted for the LPG cycling test.  
A second test shall be performed on two containers which have been 
produced successively to the first container within the same batch.  
If the results of these tests are satisfactory, the first test shall be ignored.  
In the event where one or both of the retests fail to meet the requirements, the 
batch shall be rejected.  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 10  
 
 99 2.3.6.6.  High temperature creep test  
2.3.6.6.1.  General  
This test shall only be performed on all -composite containers with a resin 
matrix having a glass transition temperature (T G) below the design 
temperature +50  °C. 
2.3.6.6.2.  Test procedure  
One finished container shall be tested as follows:  
(a) The container shall be pressurized to 3,000 kPa and held at a 
temperature defined according to Table 3 on the basis of the test 
period duration:  
Table 3  
Test temperature relating to the High temperature creep test duration  
 
T (°C)  Exposure time (h)  
100 200 
95 350 
90 600 
85 1000  
80 1800  
75 3200  
70 5900  
65 11000  
60 21000  
 
(b) The container shall be submitted to an external leak test.  
2.3.6.6.3.  Test interpretatio n 
The maximum allowed volume increase is 5 per cent.  The container shall 
meet the requirements of the external leak test as defined in paragraph 2.4.3. 
of this annex and the burst test as defined in paragraph 2.2. of this annex.  
2.3.6.6.4.  Retesting  
Retes ting is permitted for the high temperature creep test.  
A second test shall be performed on two containers which have been 
produced successively to the first container within the same batch.  
If the results of these tests are satisfactory, the first test sha ll be ignored.   
In the event where one or both of the retests fail to meet the requirements, the 
batch shall be rejected.  
2.4. Non-destructive examination  
2.4.1.  Radiographic examination  
2.4.1.1.  Welds shall  be radiographed in compliance with ISO specific ation R  1106, 
using classification B.  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 10  
 
100 2.4.1.2.  When a wire -type indicator is used, the smallest diameter of the wire visible 
may not exceed the value of 0.10 mm.  
 When a stepped and holed type indicator is used, the diameter of the smallest 
hole visible ma y not exceed 0.25 mm.  
2.4.1.3.  Assessment of the weld radiographs shall  be based on the original films in 
compliance with the practice recommended in standard ISO 2504, 
paragraph  6. 
2.4.1.4.  The following defects are not acceptable:  
 Cracks, inadequate wel ds or inadequate penetration of the weld.  
2.4.1.4.1.  For the container wall thickness  4 mm, the inclusions listed below are 
regarded as acceptable:  
 Any gas inclusion measuring not more than a/4 mm;  
 Any gas inclusion measuring more than a/4 mm but not m ore than a/3  mm, 
which is more than 25 mm away from other gas inclusion measuring more 
than a/4 mm and measuring not more than a/3 mm;  
 Any elongated inclusion or any group of rounded inclusions in a row where 
the length represented (over a weld length of 12a) is not greater than 6 mm;  
Gas inclusions over any 100 mm weld length, where the total area of all the 
figures is not greater than 2a mm2. 
2.4.1.4.2.  For the container wall thickness < 4 mm, the inclusions listed below are 
regarded as acceptable:  
Any g as inclusion measuring not more than a/2 mm;  
Any gas inclusion measuring more than a/2 mm but not more than a/1.5 mm, 
which is more than 25 mm away from other gas inclusion measuring more 
than a/2 mm and measuring not more than a/1.5 mm;  
Any elongated incl usion or any group of rounded inclusions in a row where 
the length represented (over a weld length of 12a) is not greater than 6 mm;  
Gas inclusions over any 100 mm weld length, where the total area of all the 
figures is not greater than 2a mm2. 
2.4.2.  Macr oscopic examination  
The macroscopic examination of a full transverse section of the weld shall  
show a complete fusion on the surface treated with any acid from the macro -
preparation and shall  not show any assembly fault or a significant inclusion 
or other defects.  
In case of doubt, a microscopic examination should be made of the suspect 
area.  
2.5. Examination on the outside of the weld for metal containers  
2.5.1.  This examination is carried out when the weld has been completed.  
The welded surface examined shall be well illuminated, and shall  be free 
from grease, dust, scale residue or protective coating of any kind.  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 10  
 
 101 2.5.2.  The fusion of the welded metal with the parent metal shall  be smooth and 
free from etching.  There shall  be no cracks, notching or porous  patches in 
the welded surface and the surface adjacent to the wall.  The welded surface 
shall  be regular and even.  Where a butt weld has been used, the excess 
thickness shall  not exceed 1/4 of the width of the weld.  
2.6. Bonfire test  
2.6.1.  General  
The b onfire test is designed to demonstrate that a container complete with the 
fire protection system, specified in the design, will prevent the burst of the 
container when tested under the specified fire conditions.  The manufacturer 
shall describe the behavio ur of the complete fire protection system including 
the designed drop to atmospheric pressure.  The requirements of this test 
shall be deemed to be fulfilled for any container having the following 
characteristics in common with the parent container:  
(a) Same type approval owner,  
(b) Same  shape (cylindrical, special shape),  
(c) Same  material,  
(d) Same  or greater wall thickness,  
(e) Same  or smaller diameter (cylindrical container),  
(f) Same  height or smaller height (special container shape),  
(g) Same  or small er external surface,  
(h) Same  configuration of accessories fitted to the container .1  
2.6.2.  Container set -up 
(a) The container shall be placed in the designed position by the 
manufacturer with the container bottom approximately 100 mm above 
the fire sourc e. 
(b) Shielding shall be used to prevent direct flame impingement on the 
fusible plug (PRD) if present.  The shielding shall not be in direct 
contact with the fusible plug (PRD).  
(c) Any failure during the test of a valve, fitting or tubing that is not pa rt 
of the intended protection system for the design shall invalidate the 
result.  
(d) Containers with a length of less than 1.65 m .  The center  of the 
container shall be positioned over the center  of the fire source.  
  
 1 Additional accessories, modifications and extensions of the accessories fitted to the containe r is 
possible without retesting, if notified to the Type Approval Authority which approved the container, 
considered to be unlikely to have an appreciable adverse effect.  The Type Approval Authority may 
require a further test report from the Technical Ser vice responsible.  The container and its 
configurations of accessories will be indicated in Appendix  1 to Annex  2B.  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 10  
 
102 (e) Containers with a length equal to or  larger than 1.65 m .  If the 
container is fitted with a pressure relief device at one side, the fire 
source shall commence at the opposite side of the container.  If the 
container is fitted with pressure relief devices at both sides, or at more 
than one lo cation along the length of the container, the center  of the 
fire source shall be centered  midway between the pressure relief 
devices that are separated by the greatest horizontal distance.  
2.6.3.  Fire source  
A uniform fire source of 1.65 m length shall pro vide direct flame 
impingement on the container surface across its entire diameter.  
Any fuel may be used for the fire source provided that it supplies uniform 
heat sufficient to maintain the specified test temperatures until the container 
is vented. The arr angement of the fire shall be recorded in sufficient detail to 
ensure that the rate of heat input to the container is reproducible. Any failure 
or inconsistency of the fire source during a test shall invalidate the result.  
2.6.4.  Temperature and pressure m easurements  
 During the bonfire test the following items shall be measured:  
(a) The fire temperature just below the container, along the bottom of the 
container, at minimum two locations, not more than 0.75 m apart;  
(b) The wall temperature in the bottom o f the container;  
(c) The wall temperature within 25 mm from the pressure relief device;  
(d) The wall temperature on the top of the container, in the centre of the 
fire source;  
(e) The pressure inside the container.  
 Metallic shielding shall be used to prev ent direct flame impingement on the 
thermocouples. Alternatively, thermocouples may be inserted into blocks of 
metal, measuring less than  25 mm2.  During the test the thermocouple 
temperatures and the container pressure shall be recorded at intervals of 
2 seconds or less.  
2.6.5.  General test requirements  
(a) Container shall be filled with 80 per cent in volume of LPG 
(commercial fuel) and tested in the horizontal position at working 
pressure;  
(b) Immediately following the ignition, the fire shall produce fl ame 
impingement on the surface of the container, along 1.65 m length of 
the fire source across the container;  
(c) Within 5 minutes of ignition at least one thermocouple shall indicate 
the temperature of fire just below the container of at least 590 °C.  
This temperature shall be maintained for the remaining duration of the 
test, namely until when no overpressure is present in the container;  
(d) The severity of the test conditions shall not be mitigated by ambient 
conditions (e.g. rain, moderate/high wind et c.). E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 10  
 
 103 2.6.6.  Test results  
(a) A burst of the container shall invalidate the test result.  
(b) A pressure of more than 3,700 kPa, i.e. 136 per cent of the set pressure 
of the PRV (2,700 kPa), during the test shall invalidate the test result.  
 A pressure betw een 3,000 and 3,700 kPa shall only invalidate the test 
result in case visible plastic deformation is observed.  
(c) In case the behaviour of the protection system does not comply with 
the specification of the manufacturer and it leads to a mitigating test 
condition the result shall be invalidated.  
(d) For a composite container a release of LPG via the surface is accepted 
in case of a controlled release.  A release of gaseous LPG within 2 
minutes after the start of the test or a release capacity of more than 
30 litres per minute shall invalidate the test result.  
(e) The results shall be presented in a test summary and shall include the 
following data for each container as a minimum:  
(i) Description of the container configuration.  
(ii) Photo of the container se t-up and PRD.  
(iii) Applied method including time interval between 
measurements.  
(iv) The elapsed time from ignition of the fire to the start of venting 
of LPG and actual pressure . 
(v) Time to reach atmospheric pressure.  
(vi) Pressure and temperature diagr ams. 
2.7.  Impact test  
2.7.1.  General  
At the choice of the manufacturer, all the impact tests may be carried out on 
one container or each may be carried out on a different container.  
2.7.2.  Test procedure  
For this test, the fluid medium shall be water/g lycol mixture or another liquid 
having a low freezing point which does not change the properties of the 
container material.  
A container filled with the fluid medium to the weight that equals the filling 
with 80  per cent of LPG with a reference mass of 0.56 8 kg/l, is projected, 
parallel to the length axle (x -axis in Figure 1) of the vehicle in which it is 
intended to be fitted at a velocity, V of 50 km/h, against a solid wedge, fixed 
horizontally, perpendicular to the movement of the container.  
The wedge sh all be installed so that the centre of gravity  (c.g.) of the 
container hits the centre of the wedge.  
The wedge shall have an angle α of 90 degrees and the point of impact shall 
be rounded with a maximum radius of 2.5 mm.  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 10  
 
104 The length of the wedge L, shall b e at least equal to the width of the 
container in respect to its movement during the test. The height H of the 
wedge shall be at least 600  millimetres . 
Figure 1  
Descripti on of the impact test procedure  
 
 
 
 
 
 
 
 
 
 
 
Note: c.g. = center of gravity  
In the case where a container can be installed in more than one position in the 
vehicle, each position shall be tested.  
After this test, the container shall be submitted to an external leak test as 
defined in paragraph 2.3.6.3. of this annex.  
2.7.3.  Test inte rpretation  
 The container shall comply with the external leak test requirements as 
defined in paragraph 2.3.6.3. of this annex.  
2.7.4.  Retesting  
 Retesting is permitted for the impact test.  
A second test shall be performed on two containers which have bee n 
produced successively to the first container within the same batch.  
If the results of these tests are satisfactory, the first test shall be ignored.  
In the event where one or both of the retests fail to meet the requirements, the 
batch shall be rejected.  
2.8.  Drop test 
2.8.1.  Test procedure  
One finished container shall be drop tested at ambient temperature without 
internal pressurization or attached valves. The surface onto which the 
containers are dropped shall be a smooth, horizontal concrete pad or fl ooring.  
The drop height (Hd) shall be 2 m (measured to the lowest point of the 
container).  
The same empty container shall be dropped:  
(a) In a horizontal position ; 
(b) Vertically  on each end ;  
(c) At an angle of 45°.  H α v 
L z x 
H 
c.g. r=2.5 mm  
c.g. y 
z
z E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 10  
 
 105  Following the drop test, the container s shall be submitted to an ambient 
temperature pressure cycling test according the requirements of 
paragraph  2.3.6.1. of this annex.  
2.8.2.  Test interpretation  
The containers shall comply with the requirements of the ambient 
temperature pressure cycling te st according the requirements of 
paragraph  2.3.6.1. of this annex.  
2.8.3.  Retesting  
Retesting is permitted for the drop test.  
A second test shall be performed on two containers which have been 
produced successively to the first container within the same ba tch. 
If the results of these tests are satisfactory, the first test shall be ignored.  
In the event where one or both of the retests fail to meet the requirements, the 
batch shall be rejected.  
2.9. Boss torque test  
2.9.1.  Test procedure  
The body of the cont ainer shall be restrained against rotation and a torque of 
2 times the valve or PRD installation torque specified by the manufacturer 
shall be applied to each end boss of the container, first in the direction to 
tighten a threaded connection, then in the u ntightening direction, and finally 
again in the tightening direction.  
The container shall then be subjected to an external leak test in accordance 
with the requirements shown in paragraph 2.3.6.3 of this annex.  
2.9.2.  Test interpretation  
The container shal l comply with the requirements of the external leak test as 
shown in paragraph 2.3.6.3. of this annex.  
2.9.3.  Retesting  
Retesting is permitted for the boss torque test.   
A second test shall be performed on two containers which have been 
produced successiv ely to the first container within the same batch.  
If the results of these tests are satisfactory, the first test shall be ignored.  
In the event where one or both of the retests fail to meet the requirements, the 
batch shall be rejected.  
2.10.  Acid environm ent test  
2.10.1.  Test procedure  
A finished container shall be exposed for 100 hours to a 30  per cent sulphuric 
acid solution (battery acid with specific gravity  of 1.219) while pressurized to 
3,000 kPa.  During the test, a minimum of 20  per cent of the tot al area of the 
container has to be covered by the sulphuric acid solution.  
Then, the container shall be submitted to a burst test as defined in 
paragraph  2.2. of this annex.  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 10  
 
106 2.10.2.  Test interpretation  
The burst pressure measured shall be at least 85 per c ent of the container 
burst pressure.  
2.10.3.  Retesting  
Retesting is permitted for the acid environment test.   
A second test shall be performed on two containers which have been 
produced successively to the first container within the same batch.  
If the res ults of these tests are satisfactory, the first test shall be ignored.  
In the event where one or both of the retests fail to meet the requirements, the 
batch shall be rejected.  
2.11.  Ultra -violet (UV) test  
2.11.1.  Test procedure  
When the container is direc tly subjected to sunlight (also behind glass), UV -
radiation might degrade polymeric materials. Therefore, the manufacturer has 
to prove the ability of the outer layer material to withstand the UV -radiation 
during his lifetime of 20 years.  
(a) If the outer layer has a mechanical (load carrying) function, the 
container shall be burst tested according to the requirements of 
paragraph 2.2. of this annex, after exposing to a representative UV -
radiation;  
(b) If the outer layer has a protective function, the manuf acturer has to 
prove that the coating remains integer within 20 years, in order to 
protect the under -laying structural layers from a representative UV -
radiation.  
2.11.2.  Test interpretation  
When the outer layer has a mechanical function, the container shal l comply 
with the burst test requirements as defined in paragraph 2.2. of this annex.  
2.11.3.  Retesting  
Retesting is permitted for the ultra -violet test.   
A second test shall be performed on two containers which have been 
produced successively to the firs t container within the same batch.  
If the results of these tests are satisfactory, the first test shall be ignored.  
In the event where one or both of the retests fail to meet the requirements, the 
batch shall be rejected.  E/ECE/324/Rev.1/A dd.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 10 – Appendix 1  
 
107 Annex 10 - Appendix 1  
Figure 1  
Types of main longitudinal butt welds   
 
 
 
Figure 2  
Circumferential butt weld  
 
 E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 10 – Appendix 1  
108  
Figure 3  
Examples of welded studded plates   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 10 – Appendix 1  
 109  
Figure 4  
Examples of welded rings with flange   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 10 – Appendix 2  
110 Annex 10 - Appendix 2  
Figure 1  
Contain ers with longitudinal and circumferential welds, location of test -pieces  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
(a) Tensile  test on parent material  
(b) Tensile  test on parent material of the bottom  
(c) Tensile  test on a longitudinal weld  
(d) Tensile  test on a circumferential weld  
(e) Bend  test on a longitudinal weld, the inner surface in tension  
(f) Bend  test on a longitudinal weld, the outer surface in tension  
(g) Bend  test on a circumferential weld, the inner surface in 
tension  
(h) Bend  test on a circumferential weld, the outer s urface in 
tension  
(m1, m2)  Macro sections through valve boss/plate welds (side -mounted 
valve block)  
Figure 2a  
Containers with circumferential welds only and side -mounted valve blocks; location of test -pieces  
 
 E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 10 – Appendix 2  
 111  
(a) or (b)  Tensile test on parent material  
(d) Tensile  test on a circumferential weld  
(g) Bend  test on a circumferential weld, the inner surface in 
tension  
(h) Bend  test on a circumferential weld, the outer surface in 
tension  
(m1, m2)  Macro sections through valve boss/plate welds (side -mounted 
valve block)  
 
Figure 2b  
Containers with circumferential welds only and valve boss/plate fitted to the end.  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
(m1, m2) Macro sections  through valve boss/plate welds  
(Refer to Figure 2a for other locations of test -pieces)  
 E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 10 – Appendix 3  
112 Annex 10 - Appendix 3  
 
Figure 1  
Illustration of bend test  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Figure 2  
Test piece for tensile test perpendicular to the weld  
 
 
 E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 10 – Appendix 4  
113 Annex 10 - Appendix 4  
 
Note: For torispherical ends  
 
 
 E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 10 – Appendix 4  
114  
 Relationship between H/D and shape factor C  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Values o f shape factor C for H/D between 0.20 and 0.25  
11.5
1.4
1.3
1.2
1.1
0.2 0.21 0.22 0.23 0.24 0.25b/D
0.005
0.010.0075
0.02
0.03
0.04C
H/D E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 10 – Appendi x 4 
 115 Relationship between H/D and shape factor C  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Values of shape factor C for H/D between 0.25 and 0.50  
 E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 10 – Appendix 5  
116 Annex 10 - Appendix 5  
Examples  of special vessels  
 E/ECE/324/Rev.1/Add.66/Rev.3  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.3  
Annex 10 – Appendix 5  
 117 
 E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 10 – Appendix 6  
118 Annex 10 – Append ix 6 
  Material test methods  
1. Chemical resistance  
Materials used in an all -composite container shall  be tested according to 
standard ISO 175 for 72 hours at room temperature.  
Demonstrating the chemical resistance by using data from literature is also 
allowed.  
Compatibility with the following media shall be checked:  
(a) Brake  fluid;  
(b) Window  cleaner;  
(c) Cooling  liquid;  
(d) Non-leaded  petrol;  
(e) Solution  of deionized water, sodium chloride (2.5 per cent  by mass 
 0.1 per cent ), (calcium chloride (2.5 per cent  by mass  0.1 per cent ) 
and sulphuric acid sufficient to achieve a solution of pH  4.0  0.2. 
Test acceptance criteria:  
(a) Elongation:  
The elongation of a thermoplastic material, after testing, shall  be at 
least 85  per cent of the initial elongatio n. The elongation of an 
elastomer, after testing, shall  be at least larger than 100  per cent.  
(b) For structural components (e.g., fibres):  
The residual strength for a structural component after testing shall  be 
at least 80  per cent of the original tensile  strength.  
(c) Non-structural components (e.g., coating):  
 There are no visual cracks allowed.  
2. Composite structure  
(a) Fibres embedded in a matrix  
 Tensile properties:  ASTM 3039  Fiber -resin composites  
  ASTM D2343  Glass, Aramid (tens.  prop.  
yarns glass ) 
  ASTM D4018.81  Carbon (tens.prop.continuous 
filament) with special remark 
for the matrix  
 Shear properties:  ASTM D2344  (Interlaminar shearstrength of 
parallel  fibre composite by  
short beam method)  
(b) Dry fibres on an isotensoid shape  
 Tensile properti es:  ASTM D4018.81  Carbon (continuous  
filament), other fibres.  E/ECE/324/Rev.1/Add.66/Rev.3  
E/ECE/TRANS/505/Rev.1/ Add.66/Rev.3  
Annex 10 – Appendix 6  
 
 119 3. Protective coating  
UV-radiation degrades polymeric material when directly subjected to the 
sunlight. Depending on the installation, the manufacturer has to proof a "safe 
life" for the coatin g.  
4. Thermoplastic components  
The Vicat softening temperature of a thermoplastic component shall  be above 
70 °C.  For structural components, the Vicat softening temperature shall  be at 
least 75 °C. 
5. Thermoset components  
The Vicat softening temperature of a thermo -set component shall  be above 
70 °C. 
6. Elastomeric components  
The glass transition temperature (Tg) of an elastomer component shall  be 
lower than -40 °C.  The glass transition temperature shall be tested according 
ISO 6721 "Plastics - Determina tion of dynamic mechanical properties".  The 
Tg-onset is derived from the plotted diagram storage modulus versus 
temperature by determining the temperature, where the two tangents, which 
are representing the slopes of the diagram before and after the drama tic loss 
of stiffness, intersects.  
 E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 11  
120 Annex 11  
  Provisions regarding the approval of gas injection devices, or 
gas mixing pieces, or injectors and the fuel rail  
1. Gas injection device or injector  
1.1. Definition:  See paragraph 2.10. of this Regulation.  
1.2. Component classification (according to Figure 1, para. 2.): Class 1 or Class  0. 
1.3. Classification pressure:  
 Class 0: WP declared  
 Class 1: 3,000 kPa.  
1.4. Design temperatures:  
-20 °C to 120  °C 
For temperatures exceeding the above -mentioned values, special tests 
conditions are applicable.  
1.5. General design rules:  
Paragraph 6.15.2., Provisions regarding the electrical insulation.  
Paragraph 6.15.2.1., Provisions regarding the insulation class.  
Paragraph 6.15.3.1., Provisions when the power is switche d off.  
Paragraph 6.15.4.1., Heat exchange medium (compatibility and pressure 
requirements).  
1.6. Applicable test procedures:  
 Overpressure  test Annex 15, para. 4 . 
 External leakage  Annex 15, para. 5 . 
 High temperature  Annex 15, para. 6 . 
 Low temperature  Annex 15, para. 7 . 
 LPG compatibility  Annex 15, para. 11 .** 
 Corrosion resistance  Annex 15, para. 12 .* 
 Resistance to dry heat  Annex 15, para. 13 .** 
 Ozone ageing  Annex 15, para. 14 .** 
 Creep  Annex 15, para. 15 .** 
 Temperature cycle  Annex 15, para. 16 .** 
2. Gas injection device or gas mixing piece  
2.1. Definition:  See paragraph 2.10. of this Regulation.  
2.2. Component classification (according to Figure 1, para. 2.):  
Class 2: for the part with a maximum regulated pressure during operation of 
450 kPa. E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66 /Rev.4  
Annex 11  
 
 121 Class 2A: for the part with a maximum regulated pressure during operation of 
120 kPa. 
2.3. Classification pressure:  
Parts of Class 2:  450 kPa.  
Parts of Class 2A:  120 kPa.  
2.4. Design temperatures:  
-20 °C to 120  °C, when the fuel pump is mounted outside the cont ainer.  
For temperatures exceeding the above -mentioned values, special tests 
conditions are applicable.  
2.5. General design rules:  
Paragraph 6.15.2., Provisions regarding the electrical insulation.  
Paragraph 6.15.2.1., Provisions regarding the insulation cl ass. 
Paragraph 6.15.3.1., Provisions when the power is switched off.  
Paragraph 6.15.4.1., Heat exchange medium (compatibility and pressure 
requirements).  
2.6. Applicable test procedures:  
 Overpressure  test Annex 15, para. 4 . 
 External leakage  Annex 15, par a. 5. 
 High temperature  Annex 15, para. 6 . 
 Low temperature  Annex 15, para. 7 . 
 LPG compatibility  Annex 15, para. 11 .** 
 Corrosion resistance  Annex 15, para. 12 .* 
3. Fuel rail  
3.1. Definition:  See paragraph 2.18. of this Regulation.  
3.2. Component classif ication (according to Figure 1, para. 2.):  
Fuel rails can be of Class 0, 1, 2 or 2A.  
3.3. Classification pressure:  
Parts of Class 0  WP declared  
Parts of Class 1:  3,000 kPa.  
 Parts of Class 2:     450 kPa.  
 Parts of Class 2A:     120 kPa.  
3.4. Design tempe ratures:  
-20 °C to 120  °C 
For temperatures exceeding the above -mentioned values, special tests 
conditions are applicable.  
3.5. General design rules: (not used)  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 11  
 
122 3.6. Applicable test procedures:  
3.6.1.  For fuel rails of Class 0 and 1:  
 Overpressure  test Annex 15, para. 4.  
 External leakage  Annex 15, para. 5.  
 High temperature  Annex 15, para. 6.  
 Low temperature  Annex 15, para. 7.  
 LPG compatibility  Annex 15, para. 11.  ** 
 Corrosion resistance  Annex 15, para. 12.  * 
 Resistance to dry heat  Annex 15, par a. 13.  ** 
 Ozone ageing  Annex 15, para. 14.  ** 
 Creep  Annex 15, para. 15.  ** 
 Temperature cycle  Annex 15, para. 16.  ** 
3.6.2.  For fuel rails of Class 2 and/or 2A:  
 Overpressure  test Annex 15, para. 4 . 
 External leakage  Annex 15, para. 5 . 
 High temperatu re Annex 15, para. 6 . 
 Low temperature  Annex 15, para. 7 . 
 LPG compatibility  Annex 15, para. 11 .** 
 Corrosion resistance  Annex 15, para. 12 .* 
 
 
 
 
 
 
 
 
 
 
 
_________________  
 * Only for metallic parts.  
 ** Only for non -metallic parts.  
 E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/R ev.4 
Annex 12  
123 Annex 12  
  Provisions regarding the approval of the gas dosage unit 
when not combined with the gas injection device(s)  
1. Definition:  See paragraph 2.11. of this Regulation.  
2. Component classification (according to Figure 1, para. 2.):  
Class 2: for the part with a maximum reg ulated pressure during operation of 
450 kPa. 
Class 2A: for the part with a maximum regulated pressure during operation of 
120 kPa. 
3. Classification pressure:  
Parts of Class 2:  450 kPa.  
Parts of Class 2A:  120 kPa.  
4. Design temperatures:  
-20 °C to 120  °C 
For temperatures exceeding the above -mentioned values, special tests 
conditions are applicable.  
5. General design rules:  
Paragraph 6.15.2., Provisions regarding the electrical insulation.  
Paragraph 6.15.3.1., Provisions on valves activated by electrical po wer. 
Paragraph 6.15.4., Heat exchange medium (compatibility and pressure 
requirements).  
Paragraph 6.15.5., Overpressure bypass security.  
6. Applicable test procedures:  
 Overpressure  test Annex 15, para. 4 . 
 External leakage  Annex 15, para. 5 . 
 High tempera ture Annex 15, para. 6 . 
 Low temperature  Annex 15, para. 7 . 
 LPG compatibility  Annex 15, para. 11 .**  
 Corrosion resistance  Annex 15, para. 12 .* 
Remarks:  
The parts of the gas dosage unit (Class 2 or 2A) shall be leakproof with the 
outlet(s) of that part cl osed.  
For the overpressure test all the outlets including those of the coolant 
compartment shall be closed off.  
  
 * Only for metallic parts.  
 ** Only for non -metallic parts.  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Re v.4 
Annex 13  
124 Annex 13  
  Provisions regarding the approval of the pressure and/or 
temperature sensor  
1. Definition:  
Pressure sensor:  See paragraph 2.13. of this Regulation.  
Temperature sensor:  See paragraph 2.13. of this Regulation.  
2. Component classification (according to Figure 1, para. 2.):  
Pressure and temperature sensors can be of Class 0, 1, 2 or 2A.  
3. Classification pressure:  
Parts of Class 0:  WP declared  
Parts of Class 1:  3,000 kPa.  
Parts of Class 2:     450 kPa.  
Parts of Class 2A:     120 kPa.  
4. Design temperatures:  
-20 °C to 120 °C  
For temperatures exceeding the above -mentioned values, special tests 
conditions are applicable.  
5. General design r ules:  
Paragraph 6.15.2., Provisions regarding the electrical insulation.  
Paragraph 6.15.4.1., Heat exchange medium (compatibility and pressure 
requirements).  
Paragraph 6.15.6.2., Gas flow prevention.  
6. Applicable test procedures:  
6.1. For parts of Class 0  and 1:  
Overpressure  test  Annex 15, para. 4.  
 External leakage   Annex 15, para. 5.  
 High temperature   Annex 15, para. 6.  
 Low temperature   Annex 15, para. 7.  
 LPG compatibility   Annex 15, para. 11. ** 
Corrosion resistance   Annex 15, para. 12. * 
 Resistance  to dry heat  Annex 15, para. 13. ** 
 Ozone ageing    Annex 15, para. 14. ** 
Creep     Annex 15, para. 15. ** 
Temperature cycle   Annex 15, para. 16.**  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 13  
 
 125 6.2. For parts of Class 2 or 2A:  
 Overpressure  test Annex 15, para. 4 . 
 External leakage  Annex 15, para. 5 . 
 High temperature  Annex 15, para. 6 . 
 Low temperature  Annex 15, para. 7 . 
 LPG compatibility  Annex 15, para. 11 .** 
 Corrosio n resistance  Annex 15, para. 12 .* 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
__________________  
 * Only for metallic parts.  
 ** Only for non -metallic  parts.  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 14  
126 Annex 14  
  Provisions regarding the approval of the electronic control 
unit 
1. The electronic control unit can be any device which controls the LPG 
demand of the engine and establishes the cut -off of the remotely -controlled 
service valve(s), cut -off valves and fuel pump of the LPG system  in case of a 
broken fuel supply pipe or/and in case of stalling of the engine.  
2. The switching off delay of the service cut -off valves after stalling of the 
engine may not be more than 5 seconds.  
2.1. Notwithstand ing the provisions of paragraphs 1. and 2.  above , the remotely 
controlled service valve(s) and shut -off valves may st ay in an open position 
during the commanded stop phases.  
3. The electronic control unit shall comply with relevant electromagnetic 
compatib ility (EMC) requirements according to Regulation No. 10, 02 series 
of amendments or equivalent.  
4. Electrical failure of the vehicle system may not lead to uncontrolled opening 
of any valve.  
5. The output of the electronic control unit shall be inactive wh en the electric 
power is switched off or removed.  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 15  
127 Annex 15  
  Test procedures  
1. Classification  
1.1. LPG components for use in vehicles shall be classified with regard to the 
maximum operating pressure and function, according to Chapter 2 of this 
Regulatio n.  
1.2 The classification of the components determines the tests which have to be 
performed for type approval of the components or parts of the components.  
2. Applicable test procedures  
In Table 1 the applicable test procedures dependent on the classifica tion are 
shown.  
Table 1  
Test Class 0  Class 1  Class 2(A)  Class 3  Paragraph  
Overpressure  x x x x 4. 
External leakage  x x x x 5. 
High temperature  x x x x 6. 
Low temperature  x x x x 7. 
Seat leakage  x x  x 8. 
Endurance / Functional 
tests x x  x 9. 
Opera tional test  x   x 10. 
LPG compatibility  x x x x 11. 
Corrosion resistance  x x x x 12. 
Resistance to dry heat  x x  x 13. 
Ozone ageing  x x  x 14. 
Creep  x x  x 15. 
Temperature cycle  x x  x 16. 
Compatibility with heat 
exchange fluid  x  x  17. 
3. General  requirements  
3.1. Leakage tests shall have to be conducted with pressurized gas like air or 
nitrogen.  
3.2. Water or another fluid may be used to obtain the required pressure for the 
hydrostatic strength test.  
3.3. All test values shall indicate the type o f test medium used, if applicable.  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 15  
 
128 3.4. The test period for leakage and hydrostatic strength  tests shall be not less 
than 1 minute.  
3.5. All tests shall be performed at a room temperature of 20 °C  5 °C, unless 
otherwise stated.  
4. Overpressure test under  hydraulic conditions  
A LPG containing component shall withstand without any visible evidence of 
rupture or permanent distortion a hydraulic test pressure which is determined 
by Table 1 (of 2.25 times the maximum classification pressure) during 
minimal 1  minute with the outlet of the high pressure part plugged.  
The samples, previously subjected to the durability test of paragraph 9. of this 
annex are to be connected to a source of hydrostatic pressure.  A positive 
shut-off valve and a pressure gauge, having  a pressure range of not less than 
1.5 times nor more than 2  times the test pressure, are to be installed in the 
hydrostatic pressure supply piping.  
Table 2 shows the classification pressure and the pressures to be used in the 
overpressure test according t o the classification:  
Table 2  
Classification of component  Classification pressure  
[kPa]  Hydraulic test pressure for 
over-pressure test [kPa}  
Class 0  WP 2.25 WP  
Class 1  3,000  6,750  
Class 3  3,000 or WP  6,750 or 2.25 WP  
Class 2A  120 270 
Class 2  450 1,015 
 
5. External leakage test  
5.1. A component shall be free from leakage through stem or body seals or other 
joints, and shall not show evidence of porosity in casting when tested as 
described in paragraph 5.3. below at any aerostatic pressure between 0 an d 
the pressure shown in Table  3.  The above prescriptions are deemed to be 
satisfied, if the provisions of paragraph  5.4. below are met.  
5.2. The test shall be performed at the following conditions:  
(a) At room temperature ; 
(b) At the minimum operating tem perature ; 
(c) At the maximum operating temperature . 
The maximum and minimum operating temperatures are given in the 
annexes.  
5.3. During this test the equipment under test (EUT) will be connected to a source 
of aerostatic pressure (of 1.5 times the maximum  pressure and in the case of a 
Class  3 component, 2.25 times the maximum classification pressure).  A 
positive shut -off valve and a pressure gauge having a pressure range of not 
less than 1.5 times nor more than 2 times the test pressures are  to be install ed E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 15  
 
 129 in the pressure supply piping.  The pressure gauge is to be installed between 
the positive shut -off valve and the sample under test.  While under the 
applied test pressure, the sample should be submerged in water to detect 
leakage or any other equivalen t test method (flow measurement or pressure 
drop).  
Table 3  
The classification and leakage test pressures according to the classification  
Classification  of component  Classification  pressure  
[kPa]  Test pressure  for leakage test  
[kPa]  
Class 0  WP 1.5 WP  
Class 1 3,000  4,500  
Class 2A  120 180 
Class 2  450 675 
Class 3  3,000  6,750  
 
5.4. The external leakage shall  be lower than the requirements stated in the 
annexes or, if no requirements are mentioned, the external leakage shall be 
lower than 15  cm3/hour with t he outlet plugged, when submitted to a gas 
pressure equal to the leakage test pressure.  
6. High temperature test  
A LPG containing component shall not leak more than 15 cm3/hour with the 
outlet plugged when submitted to a gas pressure at maximum operating 
temperature, as indicated in the annexes, equal to the leakage test pressure 
(Table  3, paragraph  5.3. above ).  The component shall be conditioned for at 
least 8 hours at this temperature.  
7. Low temperature test  
A LPG containing component shall not leak mor e than 15 cm3/hour with the 
outlet plugged when submitted to a gas pressure, at the minimum operating 
temperature ( -20 °C), equal to the leakage te st pressure (Table 3, 
paragraph  5.3. above ).  The component shall be conditioned for at least 8 
hours at this  temperature.  
8. Seat leakage test  
8.1. The following tests for seat leakage are to be conducted on samples of 
service valve or filling unit which have previously been subjected to the 
external leak test of paragraph 5. above.  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 15  
 
130 8.1.1.  Seat leakage tests are  conducted with the inlet of the sample valve connected 
to a source of aerostatic pressure, the valve in the closed position, and with 
the outlet open.  A positive shut -off valve and a pressure gauge having a 
pressure range of not less than 1.5 times nor m ore than 2 times the test 
pressures are  to be installed in the pressure supply piping.  The pressure 
gauge is to be installed between the positive shut -off valve and the sample 
under test.  While under the applied test pressure, observations for leakage 
are to be made with the open outlet submerged in water unless otherwise 
indicated.  
8.1.2.  Conformance with paragraphs 8.2. to 8.8. below is to be determined by 
connecting a length of tubing to the valve outlet.  The open end of this outlet 
tube is to be loca ted within an inverted graduated cylinder which is calibrated 
in cubic centimetres.  The inverted cylinder is to be closed by a water seal.  
The apparatus is to be adjusted so that:  
(a) The end of the outlet tube is located approximately 13 mm above the 
water level within the inverted graduated cylinder, and  
(b) The water within and exterior to the graduated cylinder is at the same 
level.  With these adjustments made, the water level within the 
graduated cylinder is to be recorded.  With the valve in the c losed 
position assumed as the result of normal operation, air or nitrogen at 
the specified test pressure is to be applied to the valve inlet for a test 
period of not less than  2 minutes.  During this time, the vertical 
position of the graduated cylinder is  to be adjusted, if necessary, to 
maintain the same water level within and exterior to it.  
At the end of the test period and with the water within and exterior to the 
graduated cylinder at the same level, the level of water within the graduated 
cylinder is  again recorded.  From the change of volume within the graduated 
cylinder, the leakage rate is to be calculated according to the following 
formula:  
6.101P
T273
t60V Vt 1
 
Where : 
V1 = leakage rate, cubic centimetres of air or nitrogen per hour.  
Vt = incre ase in volume within graduated cylinder during test.  
t = time of test, minutes.  
P = barometric pressure during test, in kPa.  
T = ambient temperature during test, in K.  
8.1.3.  Instead of the method described above, leakage may be measured by a 
flowmeter ins talled on the inlet side of the valve under test.  The flowmeter 
shall be capable of indicating accurately, for the test fluid employed, the 
maximum leakage flow rates permitted.  
8.2. The seat of a shut -off valve, when in the closed position, shall be free  from 
leakage at any aerostatic pressure between 0 to 3,000 kPa or from 0 to WP in 
accordance with the classification pressure of the valve.  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 15  
 
 131 8.3. A non -return valve provided with a resilient seat, when in the closed position, 
shall not leak when subjected to any aerostatic pressure between 50 and 
3,000 kPa.  
8.4. A non -return valve provided with a metal -to-metal seat, when in the closed 
position, shall not leak at a rate exceeding 0.50 dm3/hour when subjected to 
an inlet pressure up to the test pressure acco rding to Table 3 in paragraph 5.3.  
above  
8.5. The seat of the upper non -return valve used in the assembly of a filling unit, 
when in the closed position, shall be free from leakage at any aerostatic 
pressure  between 50 and 3,000 kPa.  
8.6. The seat of a ser vice coupling, when in the closed position, shall be free from 
leakage at any aerostatic pressure between 0 to 3,000 kPa.  
8.7. The gas -tube pressure relief valve shall not have internal leakage up to 
3,000  kPa or up to WP, in accordance with the classifica tion pressure of the 
valve.  
8.8. The pressure relief valve (discharge valve) shall not have internal leakage  
up to 2,600  kPa. 
9. Endurance test  
9.1. A filling unit or service valve shall be capable of conforming to the 
applicable leakage test requirements of paragraphs 5. and 8. above, after 
being subjected to a number of cycles of opening and closing as mentioned in 
the annexes  to this Regulation . 
9.2. A shut -off valve is to be tested with the valve outlet plugged.  The valve body 
filled with n -hexane, and  the valve inlet subjected to a pressure of 3,000 kPa 
or of WP in accordance with the classification pressure of the valve.  
9.3. An endurance test is to be conducted at a rate not faster than 10 times per 
minute.  For a shut -off valve, the closing torque i s to be consistent with the 
size of handwheel, wrench, or other means employed to operate the valve.  
9.4. The appropriate tests for external and seat leakage, as described under 
external leakage test under paragraph 5. above and seat leakage test under 
paragraph  8. are to be conducted immediately following the endurance test.  
9.5. Endurance for 80 per cent stop valve  
9.5.1.  The 80 per cent stop valve shall be capable to withstand 6,000 complete 
filling cycles to the maximum filling degree.  
9.6. Endurance te st for pressure regulator and vaporizer  
 The regulator shall be able to withstand 50,000 cycles without any failure 
when tested according to the following procedure:  
(a) Recycle the regulator for 95 per cent of the total number of cycles at 
room temperatur e and at the classification pressure.  Each cycle shall 
consist of flow until stable outlet pressure has been obtained, after 
which the gas flow shall be shut off by a downstream valve within 1 s, 
until the downstream lock -up pressure has stabilized.  Stab ilized outlet 
pressure s are defined as set pressure ± 15 per cent for at least 5 s.  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 15  
 
132 (b) Cycle the inlet pressure of the regulator for 1 per cent of the total 
number of cycles at room temperature from 100 per cent to 50 per 
cent of the classification pressur e.  The duration of each cycle shall be 
no less than 10 s.  
(c) Repeat the cycling procedure listed in sub -paragraph (a) at 120 °C at 
the classification pressure for 1 per cent of the total number of cycles.  
(d) Repeat the cycling procedure listed in sub -paragraph (b) at 120 °C at 
the classification pressure for 1 per cent of the total number of cycles.  
(e) Repeat the cycling procedure listed in sub -paragraph (a) at -20 °C and 
50 per cent of classification pressure for 1 per cent of the total number 
of cycle s. 
(f) Repeat the cycling procedure listed in sub -paragraph (b) at -20 °C and 
50 per cent of classification pressure for 1 per cent of the total number 
of cycles.  
(g) At the completion of all tests indicated in sub -paragraphs (a), (b), (c), 
(d), (e) and (f ), the regulator shall be leak proof as described under 
external leakage test under paragraph 5.  above , at the temperatures of 
-20 °C, at the room temperature and at the temperature of +120 °C.  
10. Operational tests  
10.1.  Operation test of the (gas -tube) p ressure relief valve  
10.1.1.  In the case of pressure relief valves, three samples of each size, design, and 
setting are to be used for start -to-discharge and resealing pressure tests.  This 
same set of three valves is to be used for flow capacity tests for  other 
observations indicated in the following paragraphs.  
Not less than two successive start -to-discharge and resealing pressure 
observations are to be made on each of the three test valves under test No. 1 
and 3 of paragraphs  10.1.2. and 10.1.4. below.  
10.1.2.  Start-to-discharge and resealing pressures of pressure relief valves - test No. 1  
10.1.2.1.  Before being subjected to a flow capacity test, the start -to-discharge pressure 
of each of three samples of a pressure relief valve of a specific size, desig n, 
and setting shall be within +3 per cent of the average of the pressures, but the 
start-to-discharge pressure of any one of the three valves shall be not less 
than 95 per cent, not more than 105 per cent, of the set pressure marked on 
the valve.  
10.1.2.2 . The resealing pressure of a pressure relief valve before being subjected to a 
flow capacity test shall be not less than 50 per cent of the initially observed 
start-to-discharge pressure.  
10.1.2.3.  A pressure relief is to be connected to an air or other a erostatic supply source 
capable of being maintained at a pressure of at least 500 kPa effective 
pressure above the marked set pressure of the valve being tested.  A positive 
shut-off valve and a pressure gauge having a pressure range of not less than 
1.5 t imes nor more than 2 times the test pressure are to be installed in the 
pressure supply piping.  The pressure gauge is to be installed in the piping 
between the valve being tested and the positive shut -off valve.  Start -to-
discharge and resealing pressure are to be observed through a water seal not 
over 100 mm in depth.  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 15  
 
 133 10.1.2.4.  After recording the start -to-discharge pressure of the valve, the pressure is to 
be increased sufficiently above the start -to-discharge pressure to ensure 
unseating of the valve.  The shut -off valve is then to be closed tightly and the 
water seal, as well as the pressure gauge, are to be observed closely.  The 
pressure at which bubbles through the water seal cease is to be recorded as 
the resealing pressure of the valve.  
10.1.3.  Flow capacity of pressure relief valves - test No. 2  
10.1.3.1.  The flow capacity of each of three samples of a pressure relief valve of a 
specific size, design, and setting shall fall within a range of 10 per cent of the 
highest observed capacity.  
10.1.3.2.  During flow capacity tests on each valve, there shall be no evidence of 
chattering or other abnormal operating condition.  
10.1.3.3.  The blow -down pressure of each valve shall be not less than 65 per cent of 
the initially recorded start -to-discharge pressure . 
10.1.3.4.  A flow capacity test on a pressure relief valve is to be conducted at a flow 
rating pressure of 120 per cent of the maximum set pressure.  
10.1.3.5.  A flow capacity test on a pressure relief valve is to be conducted by utilizing 
a properly desig ned and calibrated orifice flowmeter of the flange type 
connected to a source of air supply of adequate capacity and pressure.  
Modifications of the flowmeter from that described herein, and an aerostatic 
flow medium other than air, may be used provided th e end results are the 
same.  
10.1.3.6.  The flowmeter is to be arranged with sufficiently long lengths of pipe both 
preceding and following the orifice, or other arrangements including 
straightening vanes, to assure no disturbance at the orifice place for th e ratios 
of orifice to pipe diameters to be employed.  
Flanges between which the orifice plate is located and clamped are to be 
provided with pressure take -off lines connected to a manometer.  This 
instrument indicates the pressure differential across the o rifice plate and the 
reading is used in the flow calculation.  A calibrated pressure gauge is to be 
installed in that portion of the meter pipe downstream of the orifice plate.  
This gauge indicates the flow pressure and the reading is also used in the 
flow calculation.  
10.1.3.7.  A temperature -indicating instrument is to be connected to the meter pipe 
downstream of the orifice plate to indicate the temperature of the air flowing 
to the safety valve.  The reading of this instrument is to be integrated in the  
calculation to correct the temperature of the air flow to a 15  °C base 
temperature.  A barometer is to be available for indicating the prevailing 
atmospheric pressure.  
The reading of the barometer is to be added to the indicated air -flow gauge 
pressure.  This absolute pressure is similarly to be integrated in the flow 
calculation.  The air pressure to the flowmeter is to be controlled by a 
suitable valve installed in the air -supply piping ahead of the flowmeter.  The 
pressure relief valve under test is to be connected to the discharge end of the 
flowmeter.  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 15  
 
134 10.1.3.8.  After all preparations for flow capacity tests have been made, the valve in the 
air-supply line is to be opened slowly and the pressure to the valve under test 
is to be increased to the appropri ate flow rating pressure.  During this 
interval, the pressure at which the valve "pops" open is to be recorded as the 
popping pressure.  
10.1.3.9.  The predetermined flow rating pressure is to be maintained constant for a brief 
interval until the readings of  the instruments become stabilized.  Readings of 
the flow pressure gauge, pressure differential manometer, and the flowing air 
temperature indicator are to be recorded simultaneously.  The pressure is then 
to be decreased until there is no further discharg e from the valve.  
The pressure at which this occurs is to be recorded as the blow -down 
pressure of the valve.  
10.1.3.10.  From the recorded data and the known orifice coefficient of the flowmeter, 
the air -flow capacity of the pressure relief valve tested is  to be calculated 
using the following formula:  
60ph1.0 FFQt b 
 
Where : 
Q = Flow capacity of pressure relief valve in m3/min. of air at 100  kPa 
absolute and 15  °C. 
Fb = Basic orifice factor of flowmeter at 100 kPa absolute and 15  °C. 
Ft = Flowing air  temperature factor to convert recorded temperature to 
base of 15  °C. 
h = Differential pressure across orifice of meter in kPa.  
p = Flowing air pressure to pressure relief valve in kPa absolute (recorded 
gauge pressure plus recorded barometric pressure).  
60 = Denominator to convert equation from m3/hour to m3/min.  
10.1.3.11.  The average flow capacity of the three pressure relief valves rounded off to 
the nearest five units is to be taken as the flow capacity of the valve of that 
specific size, design and se tting.  
10.1.4.  Recheck start -to-discharge and resealing pressures of pressure -relief -valves 
test No.  3 
10.1.4.1.  Subsequent to flow capacity tests, the start -to-discharge pressure of a 
pressure relief valve shall be not less than 85 per cent, and the resea ling 
pressure shall be not less than 80 per cent of the initial start -to-discharge and 
resealing pressures recorded under test No. 1 of paragraph 10.1.2.  above.  
10.1.4.2.  These tests are to be conducted approximately 1 hour after the flow capacity 
test, an d the test procedure is to be the same as described under test No. 1 of 
paragraph  10.1.2.  above.  
10.2.  Operation test excess flow valve  
10.2.1.  An excess flow valve shall operate at not more than 10 per cent above, nor less 
than 20 per cent below the rated  closing flow capacity specified by the 
manufacturer, and shall close automatically at a pressure differential across the 
valve of not more than 100 kPa during the operation tests described below.  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 15  
 
 135 10.2.2.  Three samples of each size and style of valve are t o be subjected to these 
tests.  A valve intended for use only with liquid is to be tested with water, 
otherwise the tests are to be made both with air and with water.  Except as 
indicated in paragraph  10.2.3.  below , separate tests are to be run with each 
sample installed in vertical, horizontal and inverted positions.  The tests with 
air to be made without piping or other restriction connected to the outlet of 
the tests sample.  
10.2.3.  A valve intended for installation in one position only may be tested onl y in 
that position.  
10.2.4.  The test with air is to be conducted by utilizing a properly designed and 
calibrated orifice flowmeter of the flange type, connected to a source of air 
supply of adequate capacity and pressure.  
10.2.5.  The test sample is to be c onnected to the outlet of the flowmeter.  A 
manometer or calibrated pressure -gauge reading in increments of not more 
than 3 kPa is to be installed on the upstream side of the test sample to 
indicate the closing pressure.  
10.2.6.  The test is conducted by sl owly increasing the flow of air through the 
flowmeter until the check valve closes.  At the instant of closing, the pressure 
differential across the flowmeter orifice and the closing pressure indicated by 
the gauge are to be recorded.  The rate of flow at closing is then to be 
calculated.  
10.2.7.  Other types of flowmeters and a gas, other than air, may be used.  
10.2.8.  The test with water is to be conducted using a liquid flowmeter (or 
equivalent) installed in a piping system having sufficient pressure to p rovide 
the required flow.  The system is to include an inlet piezometer or pipe at 
least one pipe size larger than the valve to be tested, with a flow control valve 
connected between the flowmeter and piezometer.  A hose or hydrostatic 
relief valve, or bot h, may be used to reduce the effect of the pressure shock 
when the excess flow valve closes.  
10.2.9.  The test sample is to be connected to the outlet end of the piezometer.  A 
manometer or calibrated pressure gauge of the retard type, which will permit 
readings in the range of 0 to 1,440 kPa is to be connected to a pressure take -
off on the upstream side of the test sample to indicate the closing pressure.  
The connection is to be made using a length of rubber hose between the 
pressure gauge and the pressure  take-off, with a valve installed at the gauge 
inlet to permit bleeding air from the system.  
10.2.10.  Prior to the test, the flow control valve is to be opened slightly, with the bleed 
valve at the pressure gauge open, to eliminate air from the system.  Th e bleed 
valve is then to be closed and the test is conducted by slowly increasing the 
flow until the check valve closes.  During the test the pressure gauge is to be 
positioned at the same level as the test sample.  At the instant of closing, the 
rate of f low and closing pressure are to be recorded.  When the excess flow 
valve is at cut -off position, the leakage or by -pass rate of flow is to be 
recorded.  
10.2.11.  An excess flow valve used in the assembly of a filling unit shall close 
automatically at a pres sure differential of not more than 138 kPa when tested 
as described below.  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 15  
 
136 10.2.12.  Three samples of each size of valve are to be subjected to these tests.  The 
tests are to be made with air, and separate tests are to be run with each 
sample mounted vertic ally and horizontally.  The tests are to be conducted as 
described in paragraphs  10.2.4. to 10.2.7.  above , with a filling unit hose 
coupling connected to the test sample and with the upper non -return valve 
held in the open position.  
10.3.  Charging -speed -test 
10.3.1.  Testing of the good function of the device limiting the filling degree of the 
container has to be performed by filling speeds of 20, 50 and 80 l/min or to 
the maximum flow rate under an upstream pressure of 700  kPa abs.  
10.4.  Endurance  test for the filling limiter  
The device limiting the filling degree of the container shall be capable of 
withstanding 6,000 complete filling cycles to the maximum filling degree.  
10.4.1.  Scope  
Any device limiting the filling degree of the container and operating by  a 
float, after having been subjected to the tests verifying that:  
It limits the degree of filling of the container to 80 per cent or less of its 
capacity;  
It does not allow - at the cut -off position - any filling of the container at a rate 
exceeding 0.5 l itre/minute,  
Shall be subjected to one of the test procedures laid down in 
paragraph  10.5.5.  or 10.5.6. below to ensure that the device is constructed to 
withstand expected dynamic vibrational stresses and to ensure that 
performance degradations or malfunc tions will not be produced by the 
service vibration environment.  
10.5.  Vibration test procedure  
10.5.1.  Equipment and mounting techniques  
The test item shall be attached to the vibration equipment by its normal 
mounting means, either directly to the vibrat ion exciter or transition table, or 
by means of a rigid fixture capable of transmitting the specified vibration 
conditions.  Equipment used to measure and/or record the acceleration level 
or amplitude level and the frequency shall have an accuracy of at le ast 10 per 
cent of the measured value.  
10.5.2.  Choice of procedure  
At the choice of the Type Approval A uthority the tests shall be performed 
according to either procedure A described in paragraph 10.5.5. or 
procedure  B described in paragraph 10.5.6.  below.  
10.5.3.  General  
The following tests shall be carried out along each of the three orthogonal 
axes of the test item.  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 15  
 
 137 10.5.4.  Procedure A  
10.5.4.1.  Resonance search  
Resonant frequencies of the filling limiter shall be determined by varying the 
frequency of a pplied vibration slowly through the specified range at reduced 
test levels but with sufficient amplitude to excite the item.  Sinusoidal 
resonance search may be performed using the test level and cycling time 
specified for the cycling test, provided the re sonance search time is included 
in the required cycling test time of paragraph 10.5.5.3.  below.  
10.5.4.2.  Resonance dwell test  
The test item shall be vibrated for 30 minutes along each axis at the most 
severe resonant frequencies determined in paragraph 10 .5.5.1. below.  The 
test level shall be 1.5  g (14.7 m/sec2). If more than four significant resonant 
frequencies are found for any one axis, the four most severe resonant 
frequencies shall be chosen for this test.  If a change in the resonant 
frequency occur s during the test, its time of occurrence shall be recorded and 
immediately the frequency shall be adjusted to maintain the peak resonance 
condition.  The final resonant frequency shall be recorded.  The total dwell 
test time shall be included in the requi red cycling test time of 
paragraph  10.5.5.3.  below.  
10.5.4.3.  Sinusoidal cycling test  
The test item shall be sinusoidally vibrated for three hours along each of its 
orthogonal axes in accordance with:  
An acceleration level of 1.5 g. (14.7 m/sec2),  
A freque ncy range of 5 to 200 Hz,  
A sweep time of 12 minutes.  
The frequency of applied vibration shall be swept over the specified range 
logarithmically.  
The specified sweep time is that of an ascending plus a descending sweep.  
10.5.5.  Procedure B  
10.5.5.1.  The te st shall be performed on a sinusoidal vibrating bench, at a constant 
acceleration of 1.5 g and at frequencies ranging between 5 and 200 Hz.  The 
test shall last for 5 hours for each of the axes specified in paragraph 10.5.4. 
above.  The frequency band 5 -200 Hz shall be covered in each of the two 
senses in 15 minutes.  
10.5.5.2.  Alternatively, in case of the test is not conducted by utilizing a constant 
acceleration bench, the frequency band from 5 to 200 Hz has to be 
subdivided in 11 semi -octave bands, each o f them covered by a constant 
amplitude, so that the theoretical acceleration is included between 1 and 2 g 
(g = 9.8 m/sec2). E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 15  
 
138  Vibration amplitudes for each band are as follows:  
Amplitude in  mm 
(crest value)  Frequency in Hz  
(for acceleration = 1g)  Frequency  in Hz  
(for acceleration = 2g)  
10 
5 
2.50 
1.25 
0.60 
0.30 
0.15 
0.08 
0.04 
0.02 
0.01 5 
7 
10 
14 
20 
29 
41 
57 
79 
111 
157 7 
10 
14 
20 
29 
41 
57 
79 
111 
157 
222 
 
Each band shall be covered in both directions in 2 minutes, 30 minutes totally 
for each band.  
10.5.6.  Specification  
After having been subjected to one of the vibration test procedures described 
above the device shall show no mechanical failures and is deemed to conform 
to the vibration test requirements only in the case the values of its 
characteristic param eters:  
Filling  degree at the cut -off position,  
Filling  rate allowed at the cut -off position,  
Do not exceed the prescribed limits and are not exceeding by more than 
10 per cent the values preceding the vibration test procedure.  
11. LPG compatibility tests f or synthetic materials  
11.1.  A synthetic part in contact with LPG -liquid shall not show excessive volume 
change or loss of weight.  
Resistance to n -pentane according to ISO 1817 with the following conditions:  
(a) Medium : n-pentane ; 
(b) Temperature : 23 °C (t olerance acc. to ISO 1817) ; 
(c) Immersion  period: 72 hours . 
11.2.  Requirements:  
Maximum  change in volume 20 per cent  
After storage in air with a temperature of 40  °C for a period of 48 hours the 
mass compared to the original value may not decrease more th an 5 per cent.  
12. Corrosion resistance  
12.1.  A metal LPG containing component shall comply with the leakage tests 
mentioned in 4, 5, 6 and 7 and after having been submitted to 144 hours salt 
spray test according to ISO 9227, with all connections closed.  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 15  
 
 139 Or an optional test:  
12.1.1.  A metal LPG containing component shall comply with the leakage tests 
mentioned in paragraphs 4, 5, 6 and 7 and after having been submitted to a 
salt spray test according to IEC 68 -2-52 Kb: Salt Spray Fog Test.  
Test procedure:  
Before the test the component shall be cleaned according to the instructions 
of the manufacturer.  All the connections shall be closed off.  The component 
shall not be operated during the test.  
Subsequently the component shall be submitted during 2 hours t o spraying 
with a solution of salt, containing 5 per cent NaCl (mass per cent) with less 
than 0.3  per cent contamination and 95 per cent distilled or demineralised 
water, at a temperature of 20  °C.  After the spraying the component is stored 
at temperature  of 40  °C and 90 -95 per cent relative humidity for 168 hours.  
This sequence shall be repeated 4 times.  
After the test the component shall be cleaned and dried during 1 hour at 
55 °C.  The component shall now be conditioned to reference conditions 
during 4  hours, before submitting it to further testing.  
12.2.  A copper or brass LPG containing component shall comply with the leakage 
tests mentioned in paragraphs 4, 5, 6 and 7 and after having been submitted 
to 24 hours immersion in Ammonia according to ISO 69 57 with all 
connections closed.  
13. Resistance to dry  heat 
The test has to be done in compliance with ISO 188.  The test piece has to be 
exposed to air at a temperature equal to the maximum operating temperature 
for 168  hours.  
The allowable change in tensi le strength should not exceed +25 per cent.  
The allowable change in ultimate elongation shall not exceed the following 
values:  
Maximum increase 10 per cent  
Maximum decrease 30 per cent  
14. Ozone ageing  
14.1.  The test has to be in compliance with ISO 1431/1 . 
The test piece, which has to be stressed to 20 per cent elongation shall be 
exposed to air at 40  °C with an ozone concentration of 50 parts per hundred 
million during 72  hours.  
14.2.  No cracking of the test piece is allowed.  
15. Creep  
A non-metallic  part containing liquid LPG shall comply with the leakage 
tests mentioned in paragraphs 5., 6. and 7. after having been submitted to a 
hydraulic pressure of 2.25 times the maximum operating pressure at a 
temperature of 120  °C during minimal 96 hours.  Water or any other suitable 
hydraulic fluid may be used as a test medium.  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 15  
 
140 16. Temperature cycle test  
A non -metallic part containing liquid LPG shall comply with the leakage 
tests mentioned in paragraphs 5., 6. and 7. after having been submitted to a 
96 hours temper ature cycle from the minimum operating temperature up to 
the maximum operating temperature with a cycle time of 120 minutes, under 
maximum working pressure.  
17. Compatibility with heat exchange fluids of non -metallic parts  
17.1.  Test samples shall be subme rged in heat exchange medium for 168  hours at 
90 °C; then they shall be dried for 48  hours at a temperature of 40  °C.  The 
composition of the heat exchange medium used for the test is water/ethylene -
glycol fluid of  50%/50%.  
17.2.  The test is deemed to be s atisfactory if the change in volume is less than 
20 per cent, the change in mass is less than  5 per cent, the change in tensile 
strength is less than  –25 per cent and the change in elongation at break is 
within –30 per cent and  +10 per cent.  E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 16  
141 Annex 16  
  Provisions regarding  LPG identification mark for  M2 and M3 
category vehicles  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
The sign consists of a sticker which shall  be weather resistant.  
The colour and dimensions of the sticker shall  fulfil the following requirements:  
Colours:   
  Background  : green  
  Border  : white or white reflecting  
  Letters  : white or white reflecting  
Dimensions  
 Border width  : 4 - 6 mm  
 Character height  :  25 mm  
 Character thickness  :   4 mm  
 Sticker width  : 110 - 150 mm  
 Sticker height  :  80 - 110 mm  
The word "LPG" shall  be centred in the middle of the sticker.  
 E/ECE/324/Rev.1/Add.66/Rev.4  
E/ECE/TRANS/505/Rev.1/Add.66/Rev.4  
Annex 17  
142 Annex 17  
  Provisions regarding identification mark for service coupling  
 
The sign consists of a sticker which shall  be weather resistant.  
The colour and dimensions of the sticker shall  fulfil the following 
requirements:  
Colours:  
Background    : red 
 Letters     : white or white reflecting  
Dimensions  
 Character height   :  5 mm  
 Character thickness   :  1 mm  
 Sticker width    : 70 - 90 mm  
 Sticker height    : 20 - 30 mm  
The text "FOR SERVIC E PURPOSES ONLY" shall  be centred in the middle 
of the sticker.