(1) All salt furnaces and electric furnaces used for surface quenching of parts and annealing of steel must have fireproof and explosion-proof measures. There must be no flammable fluids or substances nearby that could potentially enter the salt furnace or electric furnace. The workshop should be independently constructed, and wooden structures are strictly prohibited. (2) Pipelines for transporting methanol, liquefied petroleum gas, ammonia, kerosene, etc., in the heat treatment workshop should be laid underground or overhead. When using plastic pipes to transport these substances, heat protection, anti-static, and anti-rupture measures must be in place, and leaks are strictly prohibited. (3) The welding flame prevention facilities in the ammonia decomposition chamber must be kept complete and effective at all times. (4) The protective gas (nitrogen) charged into the annealing furnace must meet the standards and reach the pressure holding value before being charged into the furnace. (5) When a protective atmosphere electric furnace is trial-run or restarted, it must first be purged with nitrogen. The oxygen content in the nitrogen must be less than 3%, and the oxygen content in the furnace must be tested to be less than 0.5% before the furnace can be used. (6) The inner cover of the protective atmosphere electric furnace must be well sealed, and explosion-proof measures must be taken when removing the inner cover from the furnace. (7) During operation of a coal gas annealing furnace, the air and coal gas pressures must be maintained within a certain range. The air-to-gas ratio should be adjusted to ensure that the coal gas achieves near-complete combustion. (8) Liquefied petroleum gas, methanol, ammonia, and other media used in heat treatment processes must be stored in dedicated warehouses and locations, with distances from production and living areas meeting fire safety regulations and standards. (9) Spray painting mixing rooms and spray painting operation rooms must use explosion-proof electrical equipment, smoking is strictly prohibited, and sufficient fire extinguishers and good ventilation are required. (10) Electrostatic spray painting production lines should be equipped with infrared automatic alarm devices and automatic fire extinguishing devices. (11) Calcium carbide and acetylene stations used in oxy-acetylene rapid flame welding should have good ventilation, and electrical equipment must be explosion-proof. Calcium carbide must be stored and protected against water, moisture, fire, high temperatures, and impacts during storage and use. (12) Acetylene generators, cylinders, and oxygen cylinders should be located at least 10 meters away from open flames and have sun protection facilities. Acetylene generators, cylinders, and oxygen cylinders should not be placed together during use and should be kept at least 5 meters apart. 13. Pure copper is strictly prohibited for acetylene gas pipelines. If copper must be used, its copper content must not exceed 70%. 14. To prevent backfire, flame arresters should be installed on acetylene generators or cylinders and checked regularly to prevent failure. 15. Liquefied petroleum gas (LPG) storage tank areas should be located downwind or crosswind of the prevailing wind direction at the edge of the plant area. The storage tank area and tanks should meet fire safety distance requirements from adjacent buildings and roads. 16. Electrical equipment in the storage tank area can be installed according to the requirements for Class 1-2 explosion hazard locations. Tanks and pipelines should be grounded, and adjacent pipelines and equipment should be bridged to eliminate static electricity hazards. 17. LPG storage tanks should be equipped with pressure gauges, level gauges, thermometers, safety valves, and other accessories. During use, maintenance and repair must be strengthened to ensure accessories are complete, sensitive, and reliable. 18. Electrical equipment in LPG rooms must be fireproof and explosion-proof, strictly prohibiting open flames, and equipped with gas leak alarm ventilation interlock devices.