Sharing Anti-static Safety Management Regulations
1. Appropriate safety measures must be taken for all processes, equipment, and areas where static electricity hazards exist.
2. In areas where explosive gases may be present, ventilation measures must be strengthened to control the concentration below the lower explosive limit.
3. Personnel working in hazardous areas should wear anti-static shoes and work clothes as needed, or have facilities that facilitate the discharge of static electricity from the human body installed, such as grounding railings. It is strictly forbidden to put on or take off clothing or wear clothing that easily generates static electricity in the above-mentioned areas. It is strictly forbidden to rub clothing with flammable solvents (such as xylene) in the above-mentioned areas. The floor of the operating area should be covered with conductive flooring, and its conductivity must be guaranteed.
4. When operating or inspecting in areas where static electricity may be generated, metal objects unrelated to work, such as keys, watches, rings, etc., must not be carried.
5. It is strictly forbidden to store flammable and explosive liquids that easily generate static electricity in plastic containers.
6. Sampling, measuring, or placing metal objects into tanks (tank trucks) is prohibited during the loading of flammable and explosive liquids. Measuring and sampling should be performed after loading and allowing the liquid to settle.
7. Heating flammable liquids with steam jets is prohibited.
8. Transferring flammable liquids using insulated hoses is prohibited.
9. In the event of machine malfunction, liquid leakage, changes in process conditions, or changes in material usage, preventative measures must be taken to avoid electrostatic hazards.
10. Directly injecting solvent into tanks using pumps is prohibited; gravity flow must be used.
11. When conveying flammable liquids, an appropriate safe flow rate should be selected based on the pipe's inner diameter and the resistivity of the medium, generally not exceeding 1 m/s.
12. Metal fittings installed on insulated pipes should be properly grounded.
13. Equipment, pipelines, tanks, and units used for producing, storing, and handling flammable gases and flammable liquids should have grounding devices to dissipate static electricity.
14. All anti-static grounding wires must be sturdy and reliable. The cross-sectional area of the grounding wire should not be less than 10 square millimeters, and the resistance of a single anti-static grounding wire should not exceed 100 ohms. When shared with grounding electrodes for other purposes, it should meet the technical requirements of other grounding systems.
15. Anti-static grounding wires for equipment, tanks, units, pipelines, etc., should be connected individually to the grounding electrode or grounding main line, and interconnection is prohibited.
16. For the installation of anti-static grounding electrodes, holes should be drilled and tapped at the bottom corner edges of equipment, units, tanks, etc., and the welded terminals (or bolts) should be connected with bolts not less than M10, and anti-loosening devices should be provided. All connections should be coated with industrial petroleum jelly. When the grounding wire is wound and connected to metal pipes, wax welding should be used. When using welded terminals, the strength of the pipe should not be reduced or damaged.
17. For non-metallic pipes (non-conductor) equipment, the metal wires, meshes, etc., wrapped around their outer walls should be tightly wrapped evenly against their surface and reliably grounded. 18. When using rubber or plastic pipes to transport flammable liquids, conductive rubber, conductive plastic flexible hoses, or conductive hoses with a metal braided layer must be used, and they must be reliably grounded.
19. Flame arresters should be installed at the vents of production equipment and storage tanks. When the feed pipe enters from the top of the equipment, it should be extended to near the bottom of the equipment to prevent static electricity generation.
20. In anti-static production processes and areas, gear drives should be used for mechanical transmissions whenever possible. When using V-belt drives, anti-static V-belts must be selected; when using ordinary V-belt drives, measures must be taken to improve their surface conductivity.