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

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

Page 79 of 194

Open the PDF at page 79

 
 
 
 
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  
 
26 
iii. 
Adequate intrinsically safe lighting systems of explosion-proof type shall be 
installed at points to aid safety, security and dentification of the product(s) 
(signage and labels). Note: vent outlets and potential release points shall be 
avoided 
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 specified in Section 3.3, the walls shall, at a minimum, be of 
the following features: 
i. 
imperforated and substantially constructed from reinforced concrete or solid 
masonry and be capable of achieving at least 30 minutes 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 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 walls shall not significantly impaired natural ventilation.  
The provision on one side is normally sufficient. However, it shall not be more than 
two sides.