G/TBT/N/UGA/1619  
24 June 2022  
(22-4885) Page: 1/3 
Committee on Technical Barriers to Trade  Original:  English  
 
  
NOTIFICATION  
The following notification is being circulated in accordance with Article 10.6  
 
1. Notifying Member:  UGANDA  
If applicable, name of local government involved (Article 3.2 and 7.2):   
2. Agency responsible:   
Uganda National Bureau of Standards  
Plot 2 -12 ByPass Link, Bweyogerere Industrial and Business Park  
P.O. Box 6329  
Kampala, Uganda  
Tel: +(256) 4 1733 3250/1/2  
Fax: +(256) 4 1428 6123  
E-mail: info@unbs.go.ug  
Website: https://www.unbs.go.ug  
Name and address (including telephone and fax numbers , email and website 
addresses, if available) of agency or authority designated to handle comments 
regarding the notification shall be indicated if different from above:   
3. Notified under Article 2.9.2 [X], 2.10.1 [  ], 5.6.2 [X], 5.7.1 [  ], 3.2 [  ], 7.2 [  ], 
other :  
4. Products covered (HS or CCCN where applicable, otherwise national tariff 
heading. ICS numbers may be provided in addition, where applicable):  - - Natural 
gas (HS code(s): 271111); Natural gas (ICS code(s): 75.060), Compressed Natural Gas 
(CNG), Liquefied Natural Gas (LNG)  
5. Title, number of pages and language(s) of the notified document:  DUS 2483: 
2022, Standard Specification for Compressed Natural Gas (CNG) and Liquefied Natural 
Gas (LNG) Used as a Motor Vehicle Fuel, First Edition; (12 pa ge(s), in English)  
6. Description of content:  1.1 This specification defines the minimum fuel quality 
requirements for gaseous fuels consisting primarily of methane when used as an internal 
combustion engine fuel.  
1.2 This specification defines the criteria for compressed natural gas (CNG), liquefied 
natural gas (LNG), or biogas when used as a fuel for internal combustion engines in motor 
vehicles.  
1.3 This specification covers the needs of internal combustion engines designed for use 
in motor vehicl es. 
1.4 Fuels that have been enriched with hydrogen are outside the scope of this 
specification.  
1.5 This specification applies to the fuel as delivered into the on -board fuel tanks of a 
motor vehicle either as a compressed gas or cryogenic liquified gas.  G/TBT/N/UGA/1619  
 
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  1.6 This specification may serve as a guide to gaseous fuel quality requirements for 
internal combustion engines used in stationary applications.  
1.7 This specification is not a natural gas pipeline standard; those requirements are 
determine d by national and regional tariffs.  
1.8 Units—The values stated in SI units are to be regarded as standard. The values given 
in parentheses after SI units are provided for information only and are not considered 
standard.  
7. Objective and rationale, inclu ding the nature of urgent problems where 
applicable:  Consumer information, labelling; Prevention of deceptive practices and 
consumer protection; Protection of human health or safety; Quality requirements; Cost 
saving and productivity enhancement  
8. Relevant documents:   
• D1142  Test Method for Water Vapor Content of Gaseous Fuels by Measurement 
of Dew -Point Temperature  
• D1945  Test Method for Analysis of Natural Gas by Gas Chromatography  
• D3588  Practice for Calculating Heat Value, Compressibility Factor, and Relative 
Density of Gaseous Fuels  
• D4150  Terminology Relating to Gaseous Fuels  
• D4468  Test Method fo r Total Sulfur in Gaseous Fuels by Hydrogenolysis and 
Rateometric Colorimetry  
• D5454  Test Method for Water Vapor Content of Gaseous Fuels Using Electronic 
Moisture Analyzers  
• D5504  Test Method for  Determination of Sulfur Compounds in Natural Gas and 
Gaseous Fuels by Gas Chromatography and Chemiluminescence  
• D6228  Test Method for Determination of Sulfur Compounds in Natural Gas and 
Gaseous Fuels by Gas Chromatography an d Flame Photometric Detection  
• D6968  Test Method for Simultaneous Measurement of Sulfur Compounds and 
Minor Hydrocarbons in Natural Gas and Gaseous Fuels by Gas Chromatography 
and Atomic Emission Detection  
• D7165  Practice for Gas Chromatograph Based On -line/At -line Analysis for Sulfur 
Content of Gaseous Fuels  
• D7493  Test Method for Online Measurement of Sulfur Compounds in Natural Gas 
and Gaseous Fuels by Gas Chromatograph and Electrochemical Detection  
• D7551  Test Method for Determination of Total Volatile Sulfur in Gaseous 
Hydrocarbons and Liquefied Petroleum Gases and Natural Gas by Ultraviolet 
Fluorescence  
• D7607  Test Method for Analysis of Oxygen in Gaseous Fuels (Electro chemical 
Sensor Method)  
• D7651  Test Method for Gravimetric Measurement of Particulate Concentration of 
Hydrogen Fuel  
• D7833  Test Method for Determination of Hydrocarbons and Non -Hydrocarbon 
Gases in Gaseous Mixtures by Gas Chromatography  
• D7904  Test Method for Determination of Water Vapor (Moisture Concentration) 
in Natural Gas by Tunable Diode Laser Spectroscopy (TDLAS)  
• D8221  Practice fo r Determining the Calculated Methane Number (MN C) of 
Gaseous Fuels Used in Internal Combustion Engines  
• D8230  Test Method for Measurement of Volatile Silicon -Containing Compounds in 
a Gaseous Fuel Sample Using Gas Chromatograp hy with Spectroscopic Detection  G/TBT/N/UGA/1619  
 
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  • ISO 6976  Natural gas – Calculation of calorific values, density, relative density 
and Wobbe index  
• American Society of Heating, Refrigerating and Air Conditioning Engineer's 
(ASHRAE) Handbook  1989 Fundamentals Volume  
9. Proposed date of adoption:  To be determined  
Proposed date of entry into force:  To be determined  
10. Final date for comments:  60 days from notification  
11. Texts available from:  National enquiry point [X] or address, telephone and fax 
numbers and email and website addresses, if available , of other body:   
Uganda National Bureau of Standards  
Plot 2 -12 ByPass Link, Bweyogerere Industrial and Business Park  
P.O. Box 6329  
Kampala, Uganda  
Tel: +( 256) 4 1733 3250/1/2  
Fax: +(256) 4 1428 6123  
E-mail: info@unbs.go.ug  
Website: https://www.unbs.go.ug