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

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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

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vapour barrier; shall be water-free and shall resist dislodgment by fire hose
systems. The space between the inner container and the outer container shall
contain insulation that is compatible with LNG and is non-combustible.
xi. Storage vessels shall be spaced and located in accordance with the provisions of
this document. The layout shall consider the effects of a release of cryogenic liquid
such that any release can rapidly evaporate and have minimum effect on the
storage tank supporting structure to ensure that the storage tank remains
adequately supported.
xii. Ground features such as open drains, manholes, gullies and cellar hatches, within
the separation distances should be sealed or trapped to prevent the passage of
LNG vapour.
3.4.5.1 LNG Boil-Off Gas Handling
i. Boil-off and flash gas shall be set to discharge into a closed system or into the
atmosphere to safe location.
ii. Boil off venting systems shall be designed not to inspirate air during normal
operations.
3.5
Facility Connecting Pipework and Valves
Piping, Valves and fittings are to be fabricated, installed, and tested in line with
international standard such as ASME Process Piping Code or any other applicable codes
recognised by DPR. Any exterior piping shall be buried or installed above ground shall be
supported and protected against mechanical damage. Additionally, the following shall, at
a minimum, apply:
i. Pipes and pipework components (including weld/braze compounds) shall be of a
material that is resistant to corrosion.