Monday, November 17, 2014

Technical measures of the oil pipeline to prevent lightning hazard

Technical measures of the oil pipeline to prevent lightning hazard:
1. The oil pipeline itself is available for the receptor, and it shall set the metal jumper in the connection parts of flanges and valves. When the flange bolts with five or more connections, it can not be connected with metal wire, but must form an electrical pathway.
2. All metal parts of the piping system, including the metal cladding of the sheath, must be grounded. Line at both ends and every 200-300m, and the branch, the corner must have one of them grounded, grounding point should be located in the tube pier, and the impact grounding resistance must not be greater than 10Ω.
3. combustible gas vent pipe must be installed lightning rod, and lightning rod protecting area should not be less than 2m beyond the tube end, and horizontal distance no less than 3m  from the tube end.

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