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 71 of 194

 
 
 
 
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  
 
18 
ii. 
All tanks to be buried shall meet all the specifications of the manufacturer, ASTM, 
and other internationally approved codes. 
iii. 
The excavation of the pit for the LPG storage tank shall permit allowance of not 
less than 70 centimetres when the tank has been set in its final position. 
iv. 
The tank shall be set in a chamber of waterproof concrete of not less than 23 
centimetres thick and the top a watertight detachable or removable concrete slab 
with a manhole at the centre. 
v. 
The manhole of every tank installation shall be raised above the level of the 
surrounding ground to prevent the ingress of surface water into it. 
vi. 
All piping below ground level shall be protected against damage and corrosion to 
the satisfaction of the Department of Petroleum Resources. 
vii. 
All individual tanks shall be provided with efficient electrical earth connections 
independent of pipe connections, having a current not exceeding 10 Ohms when 
measured by an earth resistance tester “Megger” or similar type. 
viii. 
All fixed pipes shall be of metal or fiberglass coated and shall be in a position where 
they may not be liable to damage. 
ix. 
Minimum separation distances from a building, boundary or fixed source of ignition 
to underground or mounded tanks of 10 Tons capacity or less shall be 3 meters, and 
7.5 meters for tanks above 10 tons capacity. 
x. 
Separation distances for all underground and mounded storage tanks shall be 
measured from the pressure relief valve and the filling connection.