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Article 1 For accurate determination、Promptly eliminate major accident hazards in industrial and trade enterprises (hereinafter referred to as major accident hazards)，According to the "Production Safety Law of the People's Republic of China" and other laws、Administrative regulations，Develop this standard。
Article 2 This standard applies to determination of metallurgy、Colored、Building Materials、Mechanical、Light Industry、Textile、Tobacco、Hidden dangers of major accidents in commercial and other industrial and trade enterprises。Hazardous chemicals involved in industrial and trade enterprises、Firefighting (fire)、Gas、There are other provisions for the determination of major accident hazards in special equipment and other aspects，The regulations apply。
Article 3 Industrial and trade enterprises have one of the following circumstances，Should be determined to be a major accident hazard:
(1) Failure to confirm the contracting unit、Unified coordination of production safety work of the lessee unit、Management，Or failure to conduct regular safety inspections；
(2) Special operation personnel have not received special safety operation training and obtained corresponding qualifications in accordance with regulations，On duty；
(3) Main person in charge of metal smelting enterprises、Production safety management personnel who fail to pass the assessment in accordance with regulations。
Article 4 Metallurgical enterprises have any of the following circumstances，Should be determined to be a major accident hazard:
(1) Conference Room、Activity Room、Lounge、Operation room、Changing Room、Changing rooms (including bathhouses) and other 6 types of gathering places,And the cold (hot) repair station of the steel water tank is set up in the hot metal、Molten steel、In the floor area of the slag lifting span；
(2) Smelting during production、Accident pit in refining and casting production area、Slag pit under the furnace，And the furnace front platform within the scope affected by molten metal leakage and splash、furnace base area、There is water accumulation in Category 6 areas such as lifting and ground transportation channels in the factory；
(3) There is no accidental molten steel tank in the steelmaking seabet sports bettingand continuous casting process、seabet myIntermediate tank leakage pit (trough)、Intermediate tank overflow pit (trough)、Steel leakage rotary chute，Or the accidental molten steel tank (pit is not set up in the molding process、slot)；
(4) Converter、Electric arc furnace、AOD furnace、LF furnace、RH furnace、The outlet water temperature of the water-cooling components of steel-making furnaces such as VOD furnaces is not set、Monitoring and alarm device for water flow difference between inlet and outlet，Or the monitoring and alarm device is not tilting with the furnace、Oxygen (secondary) gun automatically increases、Electrode automatic power-off and lifting device interlocked；
(5) The setting value of the furnace top working pressure during blast furnace production exceeds the maximum working pressure specified in the design document，Or the furnace top working pressure monitoring device is not interlocked with the furnace top relief valve，Or the interlocking relief pressure setting value of the furnace top relief valve exceeds the equipment design pressure value；
(6) Gas production、Recycling and purification、Pressure mixing、Storage、Use meeting room near facility、Activity Room、Lounge、Operation room、Changing Room、Locker rooms and other 6 types of gathering places，And a possible gas leak、No fixed carbon monoxide concentration monitoring and alarm device is installed in places and locations where accumulation occurs，Or the monitoring data is not connected to the 24-hour manned place；
(7) Heating furnace、Gas cabinet、Dust collector、pressure machine、Toaster and other facilities，And the gas pipeline before entering the workshop is not equipped with a partition device；
(8) The maximum gas sealing pressure of the water-sealed drainer in the positive pressure gas transmission and distribution pipeline is less than 30kPa，Or both sides of the same gas pipe partition device share a drain，Or the drain pipes on the upper parts of the drains of different gas pipes are connected，Or gas pipelines of different media share one drain。
Article 5 Nonferrous metals enterprises have any of the following circumstances，Should be determined to be a major accident hazard:
(1) Conference Room、Activity Room、Lounge、Operation room、Changing Room、Category 6 personnel gathering places such as changing rooms (including bathhouses) are set up in the floor area of the molten metal lifting span；
(2) Smelting during production、Refining、Accident pit in the casting production area、Slag pit under the furnace，and molten metal leakage、Front platform within the range of splash influence、furnace base area、There are non-productive water accumulation in Category 6 areas such as lifting and ground transportation channels in the factory；
(3) Molten metal casting process without emergency discharge and emergency storage facilities (tilting melting furnace、Tilt type holding furnace、Tilt-type integrated melting and protection furnace、Except for stationary smelting furnaces with holding furnaces)；
(4) Smelting furnace using water cooling、Casting machines (except crystallizers for aluminum processing deep well casting processes)、The heating furnace is not equipped with an emergency water source；
(5) The outlet water temperature of the closed-circuit water-cooling element of the molten metal smelting furnace is not set、Inlet and outlet water flow difference monitoring and alarm device，Or the open-circuit water-cooling element does not set the water inlet flow、Pressure monitoring and alarm device，Or the outlet water temperature of the open-circuit water-cooling element is not monitored；
(6) The crystallizer cooling water system of the deep well casting process of aluminum processing is not set with water inlet pressure、Inlet water flow monitoring and alarm device，Or the monitoring and alarm device is not connected to the quick shut-off valve、Emergency discharge valve、Channel disconnect device interlock，Or the monitoring and alarm device is not interlocked with the tilting casting furnace control system；
(7) Casting furnace aluminum liquid outlet launder for deep well casting process of aluminum processing、There is no liquid level monitoring and alarm device installed at the seabet ioseabet mobileinlet connection between the flow tank and the mold plate (distribution flow tank)，Or the liquid aluminum outlet of the fixed casting furnace is not equipped with a mechanical locking device；
(8) The aluminum liquid flow trough of the fixed casting furnace of the deep well casting process of aluminum processing is not equipped with an emergency discharge valve，Or the quick shut-off valve (disconnect device) is not installed at the seabet ioseabet mobileinlet connection between the flow trough and the mold plate (distribution trough)，Or the liquid level monitoring and alarm device at the inlet connection between the flow trough and the mold plate (distribution trough) is not connected to the quick shut-off valve (disconnect device)、Emergency discharge valve interlocked；
(9) A quick shut-off valve (disconnect device) is not provided at the seabet ioseabet mobileinlet connection between the tilting casting furnace launder and the mold plate (distribution launder) in the aluminum processing deep well casting process，Or the liquid level monitoring and alarm device at the inlet connection between the launder and the mold plate (distribution launder) is not connected with the casting furnace tilt control system、Quick shut-off valve (disconnect device) interlocked；
(10) Selection of non-steel core steel wire ropes for the steel wire hoisting system of aluminum processing deep well casting machines，Or regular inspection of wire ropes has not been implemented、Changing system；
(11) Carbon monoxide may occur、Arsenide、Chlorine、Leakage of 4 toxic gases including hydrogen sulfide、Fixed gas concentration monitoring and alarm devices are not installed in places and locations where accumulation occurs，Or the monitoring data is not connected to the 24-hour manned place，Or failure to take equivalent detection measures for places and parts where arsenic gas may be present；
(12) The gas main pipe of the combustion device using coal gas (natural gas) and forced air supply is not equipped with a pressure monitoring and alarm device，Or the monitoring alarm device is not interlocked with the emergency automatic cut-off device；
(13) The maximum gas sealing pressure of the water-sealed drainer in the positive pressure gas transmission and distribution pipeline is less than 30kPa，Or both sides of the same gas pipe partition device share a drain，Or the drain pipes on the upper parts of the drains of different gas pipes are connected，Or gas pipelines of different media share one drain。
Article 6 Building materials enterprises have one of the following circumstances，Should be determined to be a major accident hazard:
(1) Coal mill bag dust collector、The pulverized coal bunker is not equipped with a temperature and fixed carbon monoxide concentration monitoring and alarm device，Or no gas fire extinguishing device；
(2) The manual cleaning operation of the cylindrical storage warehouse did not implement the cleaning plan to prevent falling from high places、Collapse and other safety measures；
(3) The cement enterprise’s carbide slag raw material cylinder storage is not equipped with a fixed combustible gas concentration monitoring and alarm device，Or the monitoring and alarm device is not interlocked with the accident ventilation device；
(4) Entering the cylindrical storage warehouse、Baking kiln、Preheater cyclone、Decomposition furnace、Shaft furnace、Grate cooler、Grinder、In front of crusher，Failure to protect equipment that may accidentally start up and influx of materials、High temperature gas、Take isolation measures for toxic and harmful gases，Or failure to prevent falls from heights、Collapse and other safety measures；
(5) The gas main pipe of the gas kiln using premixed combustion method (except the gas kiln of the thermal generator) is not equipped with a pipeline pressure monitoring and alarm device，Or the monitoring alarm device is not interlocked with the emergency automatic cut-off device；
(6) Hydrogen production station、Nitrogen and hydrogen protective gas distribution room、Class 3 places such as gas distribution rooms without fixed combustible gas concentration monitoring and alarm devices；
(7) The water cooling equipment of the electric furnace for electrofusion products fails;
(8) Glass kiln、The glass tin bath and other equipment are not equipped with monitoring and alarm devices for water cooling and air cooling protection systems。
Article 7 Machinery enterprises have any of the following circumstances，Should be determined to be a major accident hazard:
(1) Conference Room、Activity Room、Lounge、Changing Room、Category 5 personnel gathering places such as handover rooms are set up in the floor area of the molten metal lifting span or pouring span；
(2) Melting furnace for casting、Refining Furnace、The holding furnace is not equipped with emergency discharge and emergency storage facilities；
(3) Melting furnace for casting during production、Refining Furnace、The bottom of the holding furnace、Oven pits and accident pits，and molten metal leakage、Front platform within the range of splash influence、furnace base area、Styling pit、There is water accumulation in Category 8 areas such as pouring pits and molten metal transfer channels；
(4) Melting furnace for casting、Refining Furnace、Die casting machine、The cooling water system of the oxygen gun does not set the outlet water temperature、Inlet and outlet water flow difference monitoring and alarm device，Or the monitoring and alarm device is not heated with molten metal、Conveyor control system interlocked；
(5) The gas main pipe of the combustion device using coal gas (natural gas) is not equipped with a pipeline pressure monitoring and alarm device，Or the monitoring alarm device is not interlocked with the emergency automatic cut-off device，Or the combustion device is not equipped with a flame monitoring and flameout protection system；
(6) Using flammable organic solvents to clean equipment and facilities、Tools and equipment、Ground time，Failure to take measures seabet mobileto prevent the accumulation seabet ioof flammable gases in surrounding enclosed or semi-enclosed spaces；
(7) Paint mixing room using non-water-based paint、The spray booth is not equipped with a fixed combustible gas concentration monitoring alarm device or ventilation facilities。
Article 8: Light industry enterprises have any of the following circumstances，Should be determined to be a major accident hazard:
(1) Baking by food manufacturing enterprises、The frying equipment is not equipped with an automatic cut-off device to prevent overheating；
(2) Liquor blending、The filling place and wine warehouse are not equipped with fixed ethanol vapor concentration monitoring and alarm devices，Or the monitoring and alarm device is not interlocked with the ventilation facilities；
(3) Pulp manufacturing、Paper companies use steam、Open flame directly heats the cylinder to vaporize liquid chlorine；
(4) Daily glass、The gas main pipe of the gas kiln (except the gas kiln of the thermal generator) that uses premixed combustion in the ceramic manufacturing enterprise is not equipped with a pipeline pressure monitoring and alarm device，Or the monitoring alarm device is not interlocked with the emergency automatic cut-off device；
(5) The cooling protection system of the glass kiln of the daily glass manufacturing enterprise is not equipped with a monitoring and alarm device；
(6) Paint mixing room using non-water-based paint、The spray booth is not equipped with a fixed combustible gas concentration monitoring alarm device or ventilation facilities；
(7) The lithium-ion battery storage warehouse fails to take effective physical isolation measures for faulty batteries。
Article 9 Textile enterprises have any of the following circumstances，Should be determined to be a major accident hazard:
(1) yarn、line、Singeing for fabric processing、Open width、Vaporization chamber for heat setting processes such as drying、Gas storage tank、Oil storage tank、Heating medium furnace，Not separated from production and processing and other personnel gathering places or set up separately；
(2) Insurance powder、Hydrogen peroxide、Sodium hypochlorite、Sodium chlorite、Diaobai powder (diaobai block) is mixed and stored with taboo materials，Or the insurance powder storage place does not take waterproof and moisture-proof measures。
Article 10 Tobacco enterprises have any of the following circumstances，Should be determined to be a major accident hazard:
(1) The fumigation workplace is not equipped with phosphine gas concentration monitoring and alarm equipment，Or not equipped with a gas mask，Or failure to confirm that all irrelevant personnel have evacuated the fumigation operation site before fumigation and insecticide operations；
(2) Production lines and locations that use liquid carbon dioxide to make expanded cut tobacco are not equipped with fixed carbon dioxide concentration monitoring and alarm devices，Or the monitoring and alarm device is not interlocked with the accident ventilation facilities。
Article 11 Industrial and trade enterprises with the risk of dust explosion have one of the following circumstances，Should be determined to be a major accident hazard:
(1) Dust explosion hazardous locations are located in multi-story buildings (structures) without frame structures，Or there are employee dormitories in dust explosion hazardous areas、Conference Room、Office、Lounges and other places where people gather；
(2) Different categories of combustible dust、Combustible dust and combustible gas and other media that can easily increase the risk of explosion share a dust removal system，Or different buildings、Different fire protection zones share a dust removal system、Dust removal systems are interconnected；
(3) The dry dust removal system does not adopt explosion venting、Inertization、Any kind of explosion prevention and control measures such as explosion suppression；
(4) The dust removal system for metal dust such as aluminum and magnesium adopts positive pressure dust removal，Or when other combustible dust removal systems use positive pressure to blow dust，Failure to take measures to prevent ignition sources such as spark detection and elimination；
(5) The dust removal system uses a gravity settling chamber for dust removal，Or use a dry tunnel structure as the dust removal air duct；
(6) Aluminum, magnesium and other metal dust、The dry dust removal system for wood dust is not equipped with an air lock and ash discharge device；
(7) Dust collector、Electrical equipment in dust explosion hazardous locations classified into Zone 20 such as dust collection warehouses does not meet explosion protection requirements；
(8) smash、Grinding、In front of granulation and other process equipment that are prone to mechanical ignition sources，Iron not set、Stone and other debris removal device，Or the air duct connecting the wood products processing enterprise and the sanding machine is not equipped with a spark detection and elimination device；
(9) Collection of metal seabet appdust that spontaneously Seabetignites when wet、Stacking、No ventilation or other measures are taken seabet mobileto prevent the accumulation of hydrogen in the storage area，Or dry collection、Stacking、The storage area is not waterproof、Moisture-proof measures；
(10) Failure to implement dust cleaning system，Causing serious dust accumulation at the work site。
Article 12 Industrial and trade enterprises using liquid ammonia refrigeration have any of the following circumstances，Should be determined to be a major accident hazard:
(1) Packaging、Split、The air conditioning system of the product sorting place uses ammonia direct evaporation refrigeration；
(2) The quick freezing device is not set up in a separate operating room，Or the number of workers in the quick freezing device operating room exceeds 9。
Article 13 Presence of hydrogen sulfide、Industrial and trading enterprises operating in limited spaces with the risk of carbon monoxide and other poisonings have one of the following circumstances，Should be determined to be a major accident hazard:
(1) Limited space is not identified、Establish a security management ledger，And no obvious safety warning signs are set；
(2) Failure to implement approval for limited space operations，Or "ventilate first"、Retest、Post-assignment” requirements，Or there are no supervisors at the work site。
Article 14 Monitoring of situations listed in this standard that are directly related to production safety、Alarm、Protection and other facilities、Equipment、Device，Should ensure normal operation、Use，Failure or ineffectiveness is determined to be a major accident hazard。
Article 15 This standard will come into effect on May 15, 2023。"Standards for Determination of Hidden Hazards of Major Production Safety Accidents in the Industry and Trade Industry (2017 Edition)" (Work Safety Supervisor Four [2017] No. 129) are abolished at the same time。
