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 67 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  
 
14 
 
 
 
 
Table 3.1 Minimum Safety Distances from LNG Storage Tank to Adjoining Properties or Amenities 
TANK STORAGE CAPACITY 
(MT) AT LNG DENSITY 
450kg/m3 
MINIMUM DISTANCE FROM EDGE OF 
IMPOUNDMENT OR LNG TANK DRAINAGE 
SYSTEM TO PROPERTY/AMENITIES (m) 
MINIMUM DISTANCE 
BETWEEN STORAGE 
TANKS (m) 
0.9 - 3.4 
4.6 
1.5 
3.4 – 28.3 
7.6 
1.5 
28.3 – 51.3 
15 
1.5 
51.3 – 119.3 
23 
1.5 
> 119.3 
30 
 
Note: Bund wall installations are critical for LNG facilities 
3.3.2 
Separation Distances for CNG facilities  
Individual cylinders used for the storage or dispensing natural gas shall be located with 
respect to the nearest building or compressor equipment or other sources of ignition in 
accordance with Table 3.2.  
Table 3.2 Isolation distances from building and boundaries to CNG Gas storage Unit(s) 
Total capacity of onsite 
Gas storage (Cubic Ft) 
Minimum 
distance 
(metres) 
Minimum on-site distance between Gas 
storage units and a 4hr. FRR concrete or 
Masonry wall (metres) 
Up to 1,100  (5MT) 
5 
1.0 
1,100 to 2,450 (5- 70MT) 
7.5 
1.0 
Note: 
a. A blast wall or fire clearance zone of a minimum 3 metres shall be maintained 
around the perimeter fence of any CNG storage facility. 
b. Firewall shall be installed to adjoining residential or public buildings.