Oxygen, acetylene and other pipelines in factories and workshops must be integrated and grounded. All other pipelines and equipment that may generate static electricity, such as oil transportation equipment, air compressor, ventilation device and air pipeline, especially the air pipeline for local exhaust, must be connected into a whole and grounded.
Relevant equipment and pipelines of each system in the workshop shall be connected reliably, and the contact resistance at the joint shall not exceed 0.03 Ω; When tightening two bolts normally or using metal jumper, there should be at least two grounding points.
If the distance between parallel pipes in the workshop or on the trestle is 10cm, they should be connected every 20m. Pipes with spacing less than 10cm or intersecting shall be connected at the intersection; Pipes and metal frames should also be connected at a distance of 10cm.
Both ends of gas pipeline trunk and molecular pipeline shall be grounded; Both ends of the pipeline trestle should be connected with the upper pipeline, and connected with the pipeline every 200m~300m; The trestle body should also be specially grounded.
Storage containers such as combustible gas, liquefied gas and liquid hydrocarbon or other storage tanks with fire danger shall be reliably grounded; For warehouses with a volume greater than 50m3, the grounding shall be laid along its diameter, and there shall be no less than two places. Avoid accidental collision and disconnection of anti-static grounding wire and grounding device during use; Good electrical conductivity is required at the flange of the pipeline.
All auxiliary equipment or tools, such as refueling funnel, floating roof, working platform, ruler, metal ruler, etc., shall be well grounded; When filling oil, the oil pot or oil drum should be bridged with the oil filling equipment and grounded.
The automobile fuel tank should be equipped with a metal chain, one end of which is fixedly connected with the chassis of the fuel tank, and the other end is suspended on the ground for movable contact. Before loading and unloading oil, the tanker should be connected to the oil storage equipment and grounded; After loading and unloading, the tubing should be removed first, and then the jumper wire and grounding wire can be removed.
All oil loading and unloading equipment should follow the principles of "grounding first, then connecting the oil pipe" and "disassembling the oil pipe first, then disassembling the ground wire". In solid and powder operations that may generate and accumulate static electricity, calenders, glazing machine, various rollers, mills, screens, mixers and other process equipment should be grounded.
Extended data
Life common sense
In daily life, people sometimes accumulate static electricity because of clothes, climate, friction and other reasons. And when they suddenly come into contact with metal, they will suffer the pain of electric shock, even when it happens frequently at a certain stage, it will cause certain psychological pressure. If you avoid contact with iron for a while, you may accumulate more charges and get a bigger electric shock sooner or later.
1. indoors, static electricity may be generated after the carpet rubs the sole, and the wind outside may make the body charged. Be careful to touch the iron gate when entering and leaving at this time, and your hands may get an electric shock. After repeatedly encountering such a situation, you can take the following measures to avoid electric shock:
When touching the iron gate, don't touch the iron gate directly with your hands. Instead, grab a bunch of keys in your pocket with your hand (usually it won't get an electric shock), and then touch the iron gate with the tip of the key, so that the electricity on your body will be discharged without getting an electric shock.
Principle: The pain of hand discharge is caused by high-voltage discharge. When discharging, the hand suddenly touches the iron gate very little, resulting in instantaneous high voltage. If you take the key out of your pocket, first press the key in a large area (a string of keys itself can't transfer much charge, so it won't get an electric shock at this time), and then use the key tip to touch the big conductor. At this time, the contact point of discharge is not a certain point on the skin of your hand, but the tip of the key, so your hand will not feel pain (maybe the key will! -If it hurts.
2. You often get an electric shock when you get off a taxi. It is mainly the static electricity accumulation caused by the friction between the body and the seat when getting off the bus. When closing the door after getting off the bus, the hand suddenly touches the iron gate and will get an electric shock.
When this often happens, it is best to pay attention to: when you get off the bus, that is, when your body rubs against the seat, you can hold the metal door frame in advance, so that static electricity can be discharged from your body at any time when it is generated by friction, so as to avoid discharging when you suddenly hit the iron gate after getting off the bus.
Baidu encyclopedia-anti-static
Baidu encyclopedia-anti-static grounding