Before loading and unloading high-risk liquid chemicals that are easy to accumulate static electricity, all loading and unloading equipment and facilities should be effectively connected and grounded.
2.1 The ground wire should use soft copper stranded wire, the diameter of the wire should be greater than 2.6mm, and the cross-sectional area should be greater than 5.5mm2.
2.2 The distance between the grounding point on the ship and the pipeline interface should be greater than 3m.
2.3 When loading and unloading inflammable and explosive dangerous goods, a copper wire jumper should be made between the pipeline flanges.
2.4 Before the operation, the electrostatic grounding wire must be connected before connecting the pipeline; after the operation is completed, the pipeline must be disassembled first, and then the electrostatic grounding wire must be disassembled.
2.5 When goods are sampled and barreled, the metal parts must be in good contact or connection and be grounded reliably.
2.6 It is forbidden to use insulated containers to fill flammable and explosive liquefied dangerous goods.
2.7 The fixed pipeline of the wharf must be reliably grounded.
2.8 It is not allowed to use insulating material gauges, temperature measurement and sample sampling tools for operations. When sampling and measuring in the cabin or cargo tank, the metal parts must be connected with the hull or cargo tank.
2.9 When loading and unloading, crane pipes, pipelines and tankers must be effectively bridged and grounded before loading and unloading of tankers.
2.10 Increase air humidity. The resistivity of the work area is greatly reduced, and static electricity is not easy to accumulate.
2.11 Periodically inspect the grounding electrode at the hazardous chemical operation site to make the resistance of the grounding electrode less than 25Q.