I:\CIRC\MEPC\01\642.DOC INTERNATIONAL MARITIME ORGANIZATION

4 ALBERT EMBANKMENT
LONDON SE1 7SR

Telephone: 020 7735 7611

Fax: 020 7587 3210 IMO 

# E

Ref. T5/1.01 MEPC.1/Circ.642

12 November 2008

2008 REVISED GUIDELINES FOR SYSTEMS FOR HANDLING OILY WASTES IN

MACHINERY SPACES OF SHIPS INCORPORATING GUIDANCE NOTES FOR AN INTEGRATED BILGE WATER TREATMENT SYSTEM (IBTS)

1 MARPOL Annex I contains certain regulati ons and unified interpretations related to equipment for the storage, handling and disposal of oily residues (sludge) an d engine-room oily bilge

water.

2 In order to facilitate the work of Administ rations on systems for handling oily wastes in machinery spaces of ships, the Marine Environm ent Protection Committee (MEPC) has continuously reviewed the available technologies for fu lfilment of the Convention requirements.

3 The Revised Guidelines for systems for handling oily wastes in machinery spaces of ships incorporating guidance notes for an integrat ed bilge water system (IBTS) appended to MEPC.1/Circ.511 were adopted by MEPC 54 as gui dance for Administrations, shipowners and shipbuilders for consideration in achieving an effici ent and effective system for the handling of oily bilge water and oily residues for ships taking in to account the entry into force of the revised MARPOL Annex I on 1 January 2007.

4 Recognizing that the entry into force of MA RPOL Annex VI, including its provisions for shipboard incineration of sludge oil generated duri ng the normal operation of a ship, has called for a further revision of the Guidelines, as contained in MEPC.1/Circ.511, the Marine Environment Protection Committee, at its fifty-eighth sessi on (6 to 10 October 2008), approved the 2008 Revised Guidelines for systems for handling oily wastes in machinery spaces of ships incorporating Guidance notes for an integrated bilge water treatme nt system (IBTS) (MEPC 58/23, paragraph 10.45). The 2008 Revised Guidelines, set out in the anne x, supersede and replace the Revised Guidelines appended to MEPC.1/Circ.511.

5 To ensure compliance with the provisions on o il residue (sludge) collection and disposal of MARPOL Annex I, the process of regeneration of fu el oil from oil residue (sludge) has been defined and included in the Guidance notes for an integr ated bilge water system (IBTS) appended to the

Guidelines.

6 A recommendation regarding internal drain tanks for oily residue (sludge) and other oily residues, which can only be discharged to the vesse lís oily residue (sludge) tanks has been included in order to simplify the required records in the Oil Record Book.

7 Member Governments are invited to apply the revised Guidelines and to bring them to the attention of interested parties, including recognized organizations.

***MEPC.1/Circ.642

I:\CIRC\MEPC\01\642.doc ANNEX

2008 REVISED GUIDELINES FOR SYSTEMS FOR HANDLING OILY WASTES

IN MACHINERY SPACES OF SHIPS I NCORPORATING GUIDANCE NOTES FOR AN INTEGRATED BILGE WATER TREATMENT SYSTEM (IBTS)

1 MARPOL Annex I contains certain regulati ons and unified interpretations related to equipment for the storage, handling and disposal of oily residues (sludge) and oily bilge water.

2 In the continuous review by the Marine Environment Protection Committee (MEPC) of appropriate technology for fulfilment of the Conven tion requirements, substantial information has

been collected which is valuable in the desi gn, approval and surveying of installations in engine-rooms for systems handling oily bilge water, and oily residues (sludge), but this does not form part of the Convention regulations or the related interpretations.

3 The MEPC decided that this information is, nevertheless, of substantial value to Administrations, shipowners and shipbuilders a nd, accordingly, decided that dissemination of the

information should be in the format of an MEPC circular.

4 The information contained in these Guidelines should be regarded as guidance in achieving an efficient and effective system for the handling of oily bilge water and oily residues (sludge) for new buildings and, where applicable and reasonable, for ships which are in service. The information should be considered in conjunction with specifi c conditions and circumstances, shipownersí and shipbuildersí practices, classification society rules, Administration requirement s, etc., applicable to specific ships.

4.1 The unified interpretations of MARPOL s hould further be considered in achieving an efficient and effective system for the handling of oily water bilge and oil residue (sludge).

5 Definitions for the purpose of the Guidelines

5.1 Oily waste means oil residues (sludge) and oily bilge water.

5.2 Oil residue (sludge) means the residual waste o il products such as those resulting from the purification of fuel or lubricating oil from main or auxiliary machinery or separated waste oil from bilge water separators, oil filtering equipment or o il collected in drip trays, and waste hydraulic and lubricating oils.

5.3 Oil residue (sludge) tanks are the tanks which hold oil residue (sludge) directly from which oil residue (sludge) may be disposed through the standard discharge connection or any other approved means of disposal.

5.4 Oily bilge water holding tanks are tanks collecting oily bilge water prior to its discharge, transfer or disposal.

5.5 Regulations referred to in these Guidelines are those contained in MARPOL Annex I adopted by resolution MEPC.117(52).MEPC.1/Circ.642

ANNEX Page 2

I:\CIRC\MEPC\01\642.doc 5.6 Oil residue (sludge) incineration systems ar e systems proving incineration of oil residue (sludge) generated on board seagoing ships. Oil residue (sludge) incineration systems could be:

.1 main and auxiliary steam boilers with appropriate oil residue (sludge) processing

systems;

.2 heaters of thermal fluid systems with appropriate oil residue (sludge) processing

systems;

.3 incinerators with appropriate oil residue (sludge) processing systems designed for sludge incineration; or

.4 inert gas systems with appropriate oil residue (sludge) processing systems.

Oil residue (sludge) incineration systems shall conform to regulation 16 in MARPOL Annex VI.

5.7 Oil residue (sludge) drain tanks are:

.1 tanks intended to receive separated sludge from purifiers and other oil residue (sludge) drains;

.2 tanks without any means for disposal of sludge as listed in items 3.2 and 4 in the Supplement to the IOPP Certificate, and drains; and

.3 tanks with suction connection for a sludge collecting pump only capable of discharging to the oil residue (sludge) tank( s) listed in item 3.1 in the Supplement to

the IOPP Certificate.

5.8 Sludge collecting pumps are pumps capable of taking suction from any oil residue (sludge) producing equipment or tank, other than an oil resi due (sludge) tank(s), and discharging only to oil residue (sludge) tank(s).

5.9 Separated sludge is sludge resulting from pur ification of fuel and lubricating oil.

6 Collection and storage of oil residue (sludge) and oily bilge water

6.1 An oil residue (sludge) tank or tanks are mandatory under regulation 12 in the revised

MARPOL Annex I.

6.2 An oily bilge water holding tank is arranged to receive the daily generation of oily bilge water before this water is discharged ashore or discharged through the 15 ppm bilge separator overboard. An oily bilge water hol ding tank is not mandatory, but will enable ships to operate safely during port visits, during operation in special ar eas and coastal waters and during periods of maintenance of the 15 ppm bilge separator.

6.3 An oily bilge water holding ta nk will also provide additional safeguards in the purification of oily bilge water should quick-separating detergents be used for cleaning purposes.

6.4 Oily bilge water holding tanks shall, if fitted, be noted in the Supplement to the

IOPP Certificate.MEPC.1/Circ.642

ANNEX

Page 3

I:\CIRC\MEPC\01\642.doc 7 Arrangements for oil residue (sludge) and oily bilge water tanks

7.1 Tanks for the purposes mentioned above should be arranged to satisfy the intended service of the ship.

7.2 Oil residue (sludge) tanks may be separate a nd independent but may also be combined, as suitable, depending on the size and the service of the ship.

7.3 The merits of arranging an independent tank fo r the collection of separated sludge should be considered, having regard to the smaller tank volume that needs to have cleaning and heating arrangements and the reduced space requirement for ta nk capacity that should preferably be arranged above the tank top.

7.4 If an oily bilge water holding tank is arrange d, it should be separate and independent from other tanks for the collection of oil residue (sludge).

7.5 Ships operating with heavy fuel oil of a relative density greater than 0.94 at 15°C should be provided with an oily bilge water holding tank of adequate capacity and fitte d with heating facilities to preheat the oily mixture prior to the discha rge of the tankís contents into the sea through the 15 ppm bilge separator.

8 Size of oily residue (sludge) and oily bilge water tanks

8.1 Tanks for collection of oily waste from vari ous functions in the engine-room should have adequate capacity, having regard to the intended type of service of the shi p. The information given below will provide guidance in this respect, but a ll other aspects applicable to the specific vessel trading pattern and time in port should additionally be taken into account.

8.2 The recommended capacity for oil residue (sludge) tanks is specified in the interpretations to regulation 12.

8.3 Oily bilge water holding tanks, if fitted, should have a capacity that provides to the ship the flexibility of operation in ports, coastal waters a nd special areas, without the need to discharge de-oiled water overboard. The operational merit of not having to operate th e 15 ppm bilge separator frequently should also be considered. The reco mmended capacity of oily bilge water holding tanks

should be as follows:

Main engine rating (kW) capacity (m3)

up to 1,000 4

Above 1,000 up to 20,000 P/250

Above 20,000 40+P/500

Where: P = main engine rating in kW.

For ships adopting IBTS, the capacity oily bilge water holding tanks may be reduced.MEPC.1/Circ.642

ANNEX Page 4

I:\CIRC\MEPC\01\642.doc 9 Pumping, piping and discharge systems in machinery spaces

9.1 On board ships, the propulsion systems of which are operated by heavy fuel oil, the following guidelines are provided for the piping system comp rising the plant components for the treatment and storage of oily bilge water, oil residue (sludge), drain and leakage oil and exhausted oil.

9.2 The effluent from the 15 ppm b ilge separators should be capable of being recycled to the oily bilge or oily bilge water holding tank.

9.3 If an integral pump is fitted, the discharge must not bypass the 15 ppm bilge separator.

9.4 The discharge piping system of the 15 ppm bilge water separator should be completely separate from the bilge pumping and ballast water system except the recycling line referred to in paragraph 9.2.

9.5 Discharge piping systems fitted to secure the safe ty of the ship in emergency situations, such as fire or flooding, should efficiently and promptly tackle such emergencies and therefore should be available at all times in order to comply w ith the provisions of SOLAS regulation II-1/21. Accordingly, the bilge overboard discharges should not be blanked off and remain operational at all times.

9.6 The shipís discharge pipeline for oily residue (sludge) to the standard discharge connection should not be connected to any system other than supplying those means of disposal to be listed in the IOPP supplement.

9.7 The separated dirty water and exhausted cont rol water of fuel oil purifiers should be discharged into a particular tank for this purpose in order to minimize the influx to the oil residue (sludge) drain tank for separated sludge. This pa rticular tank should be located above the double bottom for the purpose of facilitating its drain without the need of a drain pump. If dirty water and exhausted control water from purifiers is not discharged to a particular tank, and in lieu of this to a oil residue (sludge) drain tank for separated sl udge, the tank should be located above the double bottom for the purpose of the aforementioned draining facilities.

9.8 Piping to and from sludge tanks shall have no direct connection overboard, other than the standard discharge connection required by regulation 13.

10 Systems for separated sludge

10.1 Tanks for separated sludge and their pipework

Tanks for separated sludge, their pipework and pumps should be designed as follows:

10.1.1 Size of tanks: see paragraph 8.

10.1.2 Tank heating system

Tanks for separated sludge should be equipped with tank heating systems. The heating pipes should be arranged such that, seen from the heating inlet, to start with they are arranged in a way of the

boundaries and then across the whole bottom area suffi ciently high, in order to avoid being covered totally by sediments in the tank. The tank heating system should be designed such as to enable heating of the oil sludge up to 60°C. The sucti on line from the sludge tank to the pump should be provided with heat tracing.MEPC.1/Circ.642

ANNEX

Page 5

I:\CIRC\MEPC\01\642.doc 10.1.3 Oil residue (sludge) drain tank

The tank for separated sludge or other waste oils ma y be arranged as a separate oil residue (sludge)

drain tank.

10.1.4 Pipelines from the heavy fuel oil purifier to the tank

Whenever possible, the oil residue (sludge) tank shoul d be located below the heavy fuel oil purifier. If this is not possible, the oil residue (sludge) holding tank should be situated close to the heavy fuel oil purifier in such a way that the discharge line to the tank can be installed at the maximum gradient. The pipelines should, wherever possible, be st raight or fitted with large radius elbows.

10.1.5 Suction line from the oil residue (sludge) tank

The pump suction should be arranged so that the path to the suction opening is as short as possible; or the oil residue (sludge) tank s hould be mounted or designed, so that the oil residue (sludge) moves down a slope towards the suction opening. The openings should be placed as wi de as possible in the frames above the tank bottom in such a way that the oil sludge has free access to the suction line.

10.1.6 Oil residue (sludge) collecting pump and pressure lines

The pump should be suitable for use with high visc osity oil residue (sludge), e.g., ìself-priming displacement pumpî, with suitable means for prot ection against dry runni ng. It should have a sufficient total head, and delivery rate to fac ilitate the transfer of the daily sludge production

onboard.

10.1.7 Oil residue (sludge) discharge pump and pressure lines

The pump should be suitable for use with high visc osity oil sludge, e.g., ìself-priming displacement pumpî, with suitable means for protection against dr y running. It should have a sufficient total head, and be capable of discharging the tank within 4 to 8 hours.

The pressure side of the pump should only be conn ected to the standard connection on deck and to oil residue (sludge) tank(s) and to other sludge disposal means as listed in item 3.2 in the Supplement

to the IOPP Certificate.

10.1.8 Oil residue (sludge) tank design to facilitate cleaning

Access holes should be arranged so that all areas of the tank can be cleaned. An access hole should be sited on top of the tank to facilitate the use of a portable pump.

10.1.9 Steaming-out lines

The oil residue (sludge) tanks should be fitted with steaming-out lines for cleaning.MEPC.1/Circ.642

ANNEX Page 6

I:\CIRC\MEPC\01\642.doc 11 Example of an on-board system for oil residue (sludge) incineration

11.1 General

Oil residue (sludge) from oil residue (sludge) ta nks may be incinerated in incineration systems onboard. Oil residue (sludge) tanks are not a means for disposal of oil residue (sludge), but for retention of oil residue (sludge) for disposal.

11.2 Oil residue (sludge) incineration systems

An oil residue (sludge) incineration system may be composed of:

.1 steam boiler or heater of thermal fluid systems or an incinerator;

.2 oil burner;

.3 oil sludge processing system; and

.4 service tanks for oil residue (sludge).

11.3 Oil residue (sludge) processing systems

The oil sludge processing system consists of:

.1 oil residue (sludge) tank intended as se rvicing the oil residue (sludge) sludge incinerating system;

.2 oil residue (sludge) preheating system;

.3 filter; and

.4 homogenization system.

11.4 Oil residue (sludge) service tank

The oil residue (sludge) service tank should be lis ted under item 3.1 in the Supplement of the IOPP Certificate, as it is provided with means for draina ge of water (disposal) and subsequent disposal of the oil residue (sludge) in the oil residue (sludge) incineration system.

The oil residue (sludge) service tank should be provi ded in addition to the oil residue (sludge) tank for oil residue (sludge) and other waste oils. It s hould be equipped with suitable drainage facilities. With a view to improving combustibility and calorific value, a fuel oil supply connection should be provided.

11.5 Homogenization system

The homogenization system should assure that the entire contents of the oil residue (sludge) service tank should be processed into a homogenous and com bustible mixture. This system should be put into operation following adequate draining of th e tank. A device for continuous indication and monitoring of the water content of the oil sludge should be provided.MEPC.1/Circ.642

ANNEX

Page 7

I:\CIRC\MEPC\01\642.doc APPENDIX

GUIDANCE NOTES FOR AN INTEGRATED BILGE WATER TREATMENT SYSTEM (IBTS)

1 Introduction

1.1 Oily bilge water is generated by the leakage of water and oil from the equipment and piping or maintenance works resulting from the routine opera tion in machinery space of ships. Such leaked oil and water are usually mixed and collected on the tank top or bilge wells as oily bilge water.

1.2 Oily bilge water shall be treated in accordan ce with the requirements of the Convention. The operation of such treatment, including the operati on and maintenance of the oily water separator, is a heavy load for engineers onboard.

1.3 After the revision of the Guidelines and Sp ecifications for Pollution Prevention Equipment for Machinery Space Bilge of Ships adopted by resolution MEPC.107(49), the capability of oily water separators has been improved. However, the treatment process of oily bilge water with the improved equipment and the engineersí load will be basically unchanged as the amount of oily bilge water generated in ships has not been reduced.

1.4 To promote the prevention of oil pollution fr om machinery spaces of ships and reduce the load of the engineers onboard, it is effective to mi nimize the amount of oily bilge water generated in machinery spaces.

1.5 MEPC 54 noted the design with the concept of Integrated Bilge Water Treatment System (IBTS) which provides the means to minimize the am ount of oily bilge water and process the oily bilge water and oil residue (sludge) as a drastic solution to prevent oil pollution from machinery spaces of ships.

1.6 MEPC 54, in recognizing the need to disseminate the concept of IBTS, agreed to append the

Guidance notes on IBTS to the revised Guidelines fo r systems for handling oily wastes in machinery spaces of ships.

1.7 The purpose of these Guidance notes is to provide shipowners and shipbuilders with information to help in the design of ships incorporating the concept of IBTS.

2 Concept of Integrated Bilge Water Treatment System (IBTS)

The Integrated Bilge Water Treatment System (IBTS ) is a system to minimize the amount of oily bilge water generated in machinery spaces by treating the leaked water and oil separately. It also provides an integrated means to process the oily bilge water and oil residue (sludge).

3 Definitions for the purpose of the Guidance notes

3.1 ìClean drainsî mean internal drains such as those resulting from the leakage of and condensate from equipment used for seawater, fr esh water, steam, air conditioning, etc., which are not normally contaminated by oil.MEPC.1/Circ.642

ANNEX Page 8

I:\CIRC\MEPC\01\642.doc 3.2 ìOily drainsî mean drains such as those resu lting from the leakage of equipment used for oil and drains from equipment which under normal circumstances may contain oil.

3.3 ìOily bilge waterî means water collected in the bilge wells or the tank top such as those resulting from the unexpected leakage from piping or the maintenance work in machinery spaces, which may be contaminated by oil.

3.4 ìOil residue (sl udge)î: refer to paragraph 5.2 of the revised Guidelines; includes oily drains.

3.5 ìBilge primary tankî means a pre-treatment unit for separation of oily bilge water.

3.6 ìClean water holding tankî means tanks whic h hold processed water from the oil filtering equipment.

4 Outline of IBTS

4.1 Collection of drains

4.1.1 Oily drains are collected through the fixed drainage arrangements to oil residue (sludge)

tanks.

4.1.2 Clean drains are collected through the fixed drainage arrangements to clean drain tanks.

4.1.3 Oily drains and clean drains should be collect ed separately so as not to contaminate clean

drains with oil.

4.2 Pre-treatment of oily bilge water

To avoid feeding excessive oil to oil filtering equi pment, oily bilge water in the bilge wells is transferred to the bilge primary tank for pre-sepa ration of oil. The high oil content water is transferred to sludge tanks and the low oil conten t water is transferred to the bilge water holding

tank.

4.3 Discharge of oily bilge water

4.3.1 Oily bilge water in the bilge water holding tank is discharged overboard through the oily water separator in accordance with Regulation 14 of the Convention.

4.3.2 Clean water which has been processed trough the oil filtering equipment may only be discharged through the 15 ppm bilge alarm combined with an automatic stopping device by means of a separate clean water pump.

4.4 Discharge of clean drains

Clean drains may be discharged overboard direc tly through the discharge arrangement, independent from the system for oily bilge water or oil.MEPC.1/Circ.642

ANNEX

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I:\CIRC\MEPC\01\642.doc 4.5 Treatment of oil residue (sludge)

4.5.1 Oil residue (sludge) may be collected in sepa rate tanks designated for fuel oil residues and lubrication oil residues respectively.

4.5.2 Water in oil residue (sl udge) may be evaporated by heating in the oil residue (sludge) service

tanks.

4.5.3 Oil residue (sludge) may be incinerated by the sludge incineration system or disposed of to the reception facilities through the standard discharge connection.

4.6 Re-generating fuel oil from sludge

4.6.1 Oil residue (sludge) may be used onboard as re-generated fuel. Oil residue (sludge) is collected in an oil residue (sludge) tank prior to processing (disposal) b ack into the fuel oil system as re-generated fuel oil.

4.6.2 Oily drains should be recorded in the oil record book as any other oil residue (sludge)

collection.

4.6.3 Re-generation of fuel oil from oil residue (s ludge) should be an approved means of disposal of oil residue (sludge) according to the Supplement to the IOPP Certificate.

4.6.4 The re-generating process may include filtr ation, decanting or purification to remove unwanted heavy parts from the oil residue (sludge).

4.6.5 The re-generated fuel oil when used in a SECA must comply with SECA fuel oil quality requirements.

4.6.6 The re-generated fuel is fed back into the vesse lís fuel oil system at a rate equal to or less than the average sludge production on board. This is in order not to change the emission level of the exhaust when using the fuel oil with added re-gen erated fuel oil compared to using fuel oil as delivered without prior sludge separation.

5 Additional installations of IBTS

In addition to the installations required by the Convention, the following installations should form part of the IBTS:

5.1 Drainage system

5.1.1 Drip trays or coamings with sufficient de pth should be provided under the equipment used for oil such as diesel engines, burners, pumps, heat ers, coolers, filters and tanks to contain spillage

of oil.

5.1.2 Drip trays or coamings with sufficient de pth should be provided under the equipment used for water such as pumps, heaters, coolers, filters , tanks, condensers and boilers to contain spillage

of water.MEPC.1/Circ.642

ANNEX Page 10

I:\CIRC\MEPC\01\642.doc 5.1.3 Independent drainage arrangements for oil a nd water to sludge tanks and the bilge water holding tank should also be provi ded. Any open water drain in the engine-room falls under the definition of oily bilge water from engine-rooms. Su ch water shall be disposed ashore or via an oily water separator overboard.

5.1.4 Independent drainage of clean water drains from equipment not normally containing oil

should be to clean water tanks.

5.2 Pre-treatment unit for oil separation

Pre-treatment may take place in dedicated equipment or bilge primary tanks.

A bilge primary tank is a tank which separates oil fr om oily bilge water by gravity. It may make use of a cascade with drainage facilities for the oil on the top so as to enable primary separation of oily bilge water. Facilities to remove sediments should be provided.

Refer to the example of a bilge primary tank shown in Figure 1.

From bilge pump

To bilge water holding tank To oil residue (sludge) holding tank

Figure 1 ñ Example of a bilge primary tank

5.3 Storage tanks

5.3.1 Clean drain tank: Tank for the retention of clean drains.

5.3.2 Oily bilge water holding tank: Tank for the retention of oily bilge water.

5.3.3 Oil residue (sludge) service tanks: Tank fo r preparation of oil residue (sludge) for

incineration.MEPC.1/Circ.642

ANNEX Page 11

I:\CIRC\MEPC\01\642.doc 5.4 Discharge arrangement of clean drains

The overboard discharge arrangement of clean drains should be independent fr om the system for oily bilge water. Cleaning of equipment having clean drains should take account of the proper handling of chemical cleaning agents (e.g., emulsifiers) and wash water residue (including soot and sooty oil). The cleaning agent/wash water residue can foul an oil filtration system and should therefore be subjected to separate collection and/or filtration (e.g., portable units).

5.5 Exclusive pump for the oily water separator

It is preferable that an exclusive pump be provide d to transfer the pre-treated bilge water from the oily bilge water holding tank to the oily water separa tor so as not to mix the pre-treated bilge water with untreated oily bilge water.

5.6 Heating arrangement

5.6.1 Heating arrangement for the bilge primary tank to facilitate separation of oil.

5.6.2 Heating arrangement for the waste oil tank to vaporize water and facilitate incineration.

6 Example of IBTS

A typical flow diagram of IBTS is shown in Figure 2.MEPC.1/Circ.642

ANNEX Page 12

I:\CIRC\MEPC\01\642.doc Figure 2 ñ Flow Diagram of Integrated Bilge Water Treatment System (IBTS)

___________ Main en g ine air cooler air drain

Coolin g fresh water

, Sea wate r

Steam drain

, Boiler wate r

Pum p Overboard

Boiler FO settling tan k Boile r Incinerato r Oil residue (sludge)

service tan k Oil residue (sludge)

tan k Oil residue (sludge)

drain tan k

Sludge collecting

pump

Pum p Pum p

Bil g e alar m Bil g e alar m

Pum p Pum p Oil y water se p arato r Oil y bil g e-water

Bil g e well

Overboard Clean drain tan k

Engine-room scupper ( leaka g e from p i p elines )

Clean water

tan k Bilge

p rimar y tan k

Oil y bil g e water holdin g tan k H y draulic oil p um p & tank coamin g drain

Waste oil p um p & tank coamin g drain

LO p um p & tank coamin g drain

Bil g e e q ui p ment coamin g drain

Main en g ine p iston underside

Com p ressed air drain

Purifier slud g e

Oil mist drain

Work sho p drain

FO p um p & tank coamin g drain FO filter drain FO drain tan k Pump Evaporated

wate r Reception

facilities Oil residues (sludge) Clean drains

Optional arrangements (not including the IBTS concept)