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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 AND OPERATIONS OF GAS 
STORAGE AND UTILISATION FACILITIES IN NIGERIA 
Code: DPR Guide 0020 - 2020 
 
Revision Date: 1st September 2020 
 
 
 
This is a property of the Department of Petroleum Resources. All rights reserved  
 
23 
iv. 
Where numerous storage vessels are used, consideration should be given to 
separating these into isolatable sub-groups.  ESDs activating these isolation valves 
shall be provided both locally at each exit point from the storage site and remotely. 
 
3.8 
Fire/Blast Walls 
When Fire walls are used as determined in Section 3.3, the walls shall, at the minimum, be 
of the following features: 
i. 
imperforated and substantially constructed from concrete or solid masonry and be 
capable of achieving at least 30 minutes of fire resistance. Where the wall separates 
vulnerable populations from the dangerous substance, the fire resistance provided 
shall be for a minimum of 60 minutes. 
ii. 
shall not be less than the height of the vessel. For larger vessels, it should not be 
less than 2 meters high or the height of the vessel, whichever is greater. 
iii. 
The thickness of the Firewall shall not be less than of 0.23m (9 inch). 
iv. 
The separation distance between the vessel and the firewall shall not be less than 
3 meters.  
v. 
The installation of the fire wall shall not significantly impair natural ventilation.  The 
provision on one side is normally sufficient. However, it shall not be more than two 
sides.  
Note: The specification and composition of materials for the Firewall shall be submitted to 
the appropriate DPR field/zonal office and the construction shall also be monitored by the 
assigned DPR representatives.