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GUIDE FOR THE ESTABLISHMENT AND OPERATIONS OF DOWNSTREAM GAS FACILITIES IN NIGERIA (LPG, CNG, LNG) ISSUED BY

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Applicable to all Oil & Gas Operators  
GUIDELINES FOR THE ESTABLISHMENT OF AN AUTOGAS 
REFUELLING STATIONS AND  ADD-ON GAS FACILITY IN NIGERIA 
Code: DPR Guide 0042 - 2020 
 
Revision Date: 1st September 2020 
 
 
 
This is a property of the Department of Petroleum Resources. All rights reserved  
 
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ii. 
Additional safety measures for adequate ventilation, gas and fire detectors, CCTV 
and fire- fighting equipment shall apply. 
iii. 
Technical and functional specifications of the skids shall be made available to DPR, 
to ensure consistency and availability of the system.  
iv. 
Any relocation of the skids, change in layout of the approved site and any other Any 
relocation of the skids, change in layout of the approved site and any other 
modification shall be promptly reported to the Department for concurrence and 
approval. 
 
 
3.4.3 Requirements for CNG tanks 
In addition to the requirements for tanks listed in section 3.4, the following are applicable 
to CNG tanks: 
i. Each cylinder or bulk tank used for the storage of CNG shall be equipped with an 
approved pressure relieving device and an approved isolating valve which shall be 
readily accessible when installed in the gas unit.  The isolating valve shall not be 
capable of closing off the pressure relief device. 
ii. Piping and gas storage systems shall be protected against over-pressure by safety 
relief devices.  Relief devices installed to protect the storage systems shall be such 
that it limits the pressure to 120 per cent above the maximum allowable working 
pressure of the system or the pressure which produces a loop stress of 75% of the 
specified minimum yield strength, whichever is lower. 
iii. A shut-off valve shall not be installed between the pressure relief valve and the gas 
unit or bulk tank except that a shut-off valve may be used on multiple valve 
installations where the arrangements of the valve will provide full required flow