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 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 24 i. Pipes and pipework components (including weld/braze compounds) shall be of a material that is resistant to corrosion. Underground and aboveground piping shall also be protected from corrosion in compliance to recognized best practices. ii. Special protection such as coatings or cathodic protection shall be considered and applied for pipe systems and valves. For LNG connections, vacuum insulation of cryogenic pipes in ducts may apply. iii. Where practical, pipe shall be continuous, unjointed and uninterrupted. Where there are breaks in the continuity of pipework, consideration shall be given to electrical bonding across the joint. Threaded pipe and fittings are not allowed underground. iv. Manual shut-off valves, emergency shut-off valves, overpressure shut-off valve, flow check valves, non-return valves and backflow check valves used in piping systems shall conform to applicable standards. v. Relief and safety valves shall be inspected by a DPR accredited consultant and witnessed by the Department every thirty (30) months or at such shorter intervals as shall be necessary to maintain them in satisfactory condition. vi. All pipework shall that are insulated should accessible to facilitate periodic inspection, examination and/or testing. 3.5.1 Pressure Relief Systems Relief devices shall be designed such that the operations safely disperse contents without the risk of accumulation, ignition, or impingement on personnel, equipment and buildings. For LNG, the following applies at the minimum: i. All vents including those of safety relief devices and purge valves shall be connected to a vent stack and/or any other boil-off gas utilization systems put in place.
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