Is it necessary to perform an electrostatic bonding between the flanges of the low-pressure steam pipeline with 4 bolts?
Thread Content
As the title suggests, I’d like to ask if anyone familiar with this topic has any information on relevant static discharge bonding standards; I’d like to learn about them. Thank you
Article 14.2.14 of the \"Code for Design of Oil Depots\" (GB 50074-2002) stipulates that flange connections of oil (oil and gas) pipelines shall be bridged. When connected by no less than 5 bolts, bypass wiring is not required in a non-corrosive environment.
Low-pressure steam, non-flammable; generally, no bonding is required for the 4 bolt holes. If the quantity is small, just connect it in passing.
It is clearly referring to oil and gas; non-flammable steam is not needed. But these days there are many fake experts who come to the site for inspections; they might mention it as soon as they see it, so it’s best to do a bypass connection to solve the problem once and for all
It’s not necessary. Steam pipes contain non-flammable media, and the condensed water in steam is also a good conductor; therefore, static electricity accumulation is impossible.
Last week, during an inspection of the lightning protection measures, it was noted that a flange on one of the steam pipes in a workshop wasn’t connected properly; it’s best to install a cross connection there
The bonding at the flange is an electrostatic bond, not a lightning protection grounding wire; confusing the two is a sign of pseudo-expertise. The lightning protection and grounding standards do not specify any requirements regarding the bonding of pipe flanges; pipeline lightning protection and grounding is achieved by having the pipe supports in contact with the pipe tray, with the pipe tray supports being connected to the lightning protection network.