1. a gas as a fuel, the combustible gas called gas, it has become urban public utilities and industrial users of important fuel resources, gas production can be divided into natural production and manufacturing. The raw material for production of gas was mainly coal and oil, artificial manufacturing methods are mainly made of coke oven gas, carbonization furnace system gas, water gas stove-gas, producer gas and oil-seed-gas, etc. Through the biogas production after the crude gas purification treatment, must meet the requirements, through the metrology room measurement before pressing into the gas tank or gas transmission and distribution network to users. Gas purification process including condensing cooling, carrying off, off tar fog, deaminase, benzene, desulfurization and naphthalene, and other processes. In gas production process, is also recyclable hundreds of chemical by-products. Gas combustion smoke-free, do not pollute the environment, a powerful, high thermal efficiency, to gas as fuel to energy conservation. But gas of inflammable, explosive, toxic, and other characteristics, determines its production and distribution process, potential fire and explosion hazards. Gas plant (station) once the discontinuation of the misfortune, endangers human life, and resulting in the loss of State property, and the people's daily life and industrial production. Therefore, you must
Pay attention to the gas factory (stations) of fire prevention. 1. fire risk (1) gas explosion and ignition sources in gas production, gas and air can form explosive gas mixtures, fire and explosion hazards generally blowing-in-time, stopping time, stuffy furnace, coal furnace when flying in falling, suddenly loses power, when suddenly the water, maintenance, and occurs when a gas leakage occurs. In the meantime there are major sources of ignition temperature of the production equipment L; maintenance of objects of welding and cutting, torch and the flame; lightning, static electricity; electrical equipment and wiring of electrical discharge; iron impact, friction resulting from Mars; smoking, arson, etc. (2) raw material preparation process ① to coal as raw material for gas production plants, coal stocks, stacking method incorrectly, piling up too high too large, stacked in time, will lead to oxidation of heat accumulation and not scattered occurrence of spontaneous combustion of coal in pieces, and grinding, sieving or loading and unloading, belt conveyor, also causing coal dust raised dust explosion. ② to residue as raw material for gas production plant, due to oil in storage, handling and transportation process may leak circulation makes oil vapor diffusion into the air resulting fire hazard. In addition, if suffering from lightning, static, and when to use open fire equipment overhaul, unless the fuel products. (3) gas production process ① use coke oven gas, coke oven made of oven door and out the top sometimes smoke fire ignite nearby combustibles and heating of the gas pipeline or valve pipe leak will also be affected by the injection of flame or high-temperature furnace wall of fire or explosion. ② by carbonization furnace-gas, the coal will be at a high temperature melting into adhesive resin, in the furnace wall and accumulation of vacant, jam channel, when the load is too large will suddenly drop to make the lower part of the space of the furnace gas rapidly press out from the bottom. While a large number of inhalation from the top, while in the air in the furnace and the crude gas mixture formation of explosive gases, high-temperature effects of an explosion. In addition, from the lower part of the launch of a large number of furnace gas, there is also a danger of explosion of the space. ③ use water for gas-gas, water gas in the main components are carbon monoxide and hydrogen, in the event of a leak or inhalation of air in the production system, the formation of explosive gas mixtures and explosion. ④ with producer gas-making, production of fire danger basic and water gas-gas fire risks are the same. In addition, the producer of top of the operating room is also the key to gas leakage occurs, potentially significant fire hazard. ⑤ oil-gas, light oil itself fire danger to catalytic reactors, waste heat boilers, steam heat exchanger, air regenerator, the main production equipment of the potential occurrence of fire and explosion. In addition, oil-gas producing by-products of naphthalene and tar flammable or combustible also belongs to. (4) purification process ① in the carriage of processes, equipment and pipeline rupture occurred or by mistake, gas leakage occurs or inhaled air exhauster, especially shaft parts susceptible to the formation of micro leaks, there is the danger of explosive mixtures. ② in deaminase process, typically using water or dilute sulfuric acid absorption removal of ammonia gas contains. But the ammonia has flammable or explosive nature, if leakage can cause an explosion. In addition, dilute sulfuric acid and ammonium sulfate has corrosion, damage etching equipment, pipeline, make the disclosure. ③ in awkward process, typically used to wash the oil absorption method for removing the gas contains benzene, benzene is a flammable liquid, scraps of iron in the air can occur leak happens spontaneous, can cause fire and explosion. ④ in the desulfurization process, using wet desulfurization of fire danger is equipment failure or mistake would cause a gas leak or inhalation of air, and the operator were arsenic poisoning; the use of dry method desulfurization of fire danger is due to the use of sorbents contains sulphide iron, wood dust and oil occurs spontaneous combustion, and oil vapour, gas leakage because of violation of fire and dry box pressurizing resulting explosion. ⑤ in naphthalene process, usually is uses light diesel oil and tea, light diesel oil is a flammable liquid, if packing and diesel tank leak yuhuoyuan will cause the explosion. (5) gas metering process metrology room of the meter in the event of a failure, and all kinds of valves, pipe fittings in the event of a gas leak, forming an explosive mixture. (6) gas transmission and distribution process ① gas Cabinet in long-running process will be based bear uneven subsidence, corrosion damage, the defect itself, the structure, produces a gas leak fire hazard. It is prone to leakage of parts and hanging ring Cup. ② gas pipeline corrosion or subjected to gas pipelines of lightning, which, if it occurs leakage with open flame or high-temperature light lamps for maintenance, we shall have a fire and explosion. (7) by-product of refining ① in the distillation of coal tar, due to the production of raw materials and products are volatile, oil vapour to form an explosive mixture with air, and the use of distillation pot open flame heating, temperature control, fire and explosion hazards. ② in the extraction of phenol, due to the production of raw materials and products for flammable and combustible liquids, toxic and corrosive, in the production operation, theAs a result of cocks, valves, often intermittent heating insulation, leakage or operation errors can lead to fire. (8) waste phenols process gas plant discharges wastewater contains a lot of phenol, cyanide, sulphur and other harmful substances, must be addressed. When using solvent extraction impulse leather phenols, as extractant heavy benzene is flammable explosive, use, processing and transportation process has produced vapor explosion, danger of liquid combustion. 2. fire precautions (1) gas plant (station) for general fire safety requirements ① gas plant (station) on the production site of building fire-rating requirements see table 3-22. ② gas plant (station) on the production site should have good natural and mechanical ventilation. A, b production sites should set the necessary explosion pressure relief area, explosion hazardous areas of the electrical equipment must have the explosion protection measures and mine facilities, as well as grounding device. In the dust collector, scrubber, gas mains and air duct installation of explosion-proof plate on the desirability or explosion-proof valve. In production systems should also set the steam cleaning and water installations, gas pipelines should be established in gas low-pressure alarm device. Production and distribution of all equipment and pipe should often check to prevent run, run, drip, leak. ③ gas plant (plant) in addition to production must use, are forbidden to carry matches, lighters, cigarette fires. Can't wear some spikes and chemical fiber clothes, as well as automobile, car or other motor vehicles into class a production areas. Table 3 — 22 gas plant (station) on the production site of architectural fireproof grade
Production category site name building fire-resistant level required mode a Coke basement and flue Gallery, coal Tower bottom furnace, furnace side between sets of underlying, vertical carbonization furnace bottom line-focus institutions on both sides, bunker, coke and top action space, primary cooler, gas carrying off room, room electrical tar reader, ammonium sulfate or ammonia water engineering, benzene and naphthalene section, desulfurization process, benzene refining regions, benzene tank pressure in the engine room, the meter, oil-gas plant, tank farm, pump room, water production plant in pressurized gasification process and its wide purification equipment and plants greater than or equal to level 2 category b gas furnace powerhouse, coal bunker
Producer gas draining engine room, the meter room and desulfurization process
Transport coal coal machine room, corridor, ammonia water pumping station, ammonia, sulphur regeneration zone
Sulfur warehouses, waste water extraction engineering, laboratory, tar, tar distillation tank area is greater than or equal to level II r coal yard, other parts of the coke oven, power distribution unit greater than or equal to the second group d metal ego Workshop II or III "refractory materials, steel, etc. do not burn material warehouse
Metal-working shop second or third level④ in armor, CPI production area maintenance, should strictly implement fire approval system, development of fire inspection detail scenarios. Should be completely excluded and other connection tubes of combustible gases or liquids, drain down wind should prohibit flame 1O meters, and then close all import and export of valves. Fire before you use Log-Analyzer, confirm safety rear access for fire. Fire resistance of equipment shall not exceed 2 ohms. Nearby is the application running on the device, the wet canvas separated around oil Groove cover measures should be taken locally. Acetylene generator, welder shall directly into class a production area, take the lengthened rubber tubes and wires. Fire is one should be adequate guardianship, and fire water and fire-fighting equipment. Moving, to thoroughly examine onsite and eliminate residues from fire, fire, evacuation of acetylene generator and electric welding machine. Gas equipment maintenance has been completed, the bottom into the holes or closed down the door, then pump the blind plate with inert gas or gas slowly replacement air until the oxygen content in the exhaust sample is less than 2%, to be used. (2) raw material preparation procedures should be established in coal yard ① relatively high geographical, ground should be dry, compaction, drain should be set up on the ground floor. Different grades of coal, coal should be separated, and the production plant, a heap of distance shall be not less than 8 meters, is stacked fuel near, smoking is not allowed. All equipment should be regularly checked and found that failure to timely repair, where necessary, be ready for moving. Various coal mill room should be used in explosion-proof electrical equipment. ② oil products storage, transportation, loading and unloading process of fire safety requirements please refer to language "warehouse fire" section "oil and its products storage warehouse fire". (3) ① biogas production system using coke oven gas production sites should be installed gas concentration alarm device, and set at level explosion-proof area, near the source of fire or dumping fuel. Periodically check the gas pipelines remain positive pressure, prevent leakage or inhaled air. Control power exhauster so that the collector maintains positive pressure, coke oven Coke, to the proper operation of water. Collector of relief valve should close no leakage, blackout, you can immediately open. ② by carbonization furnace-gas production plants should be located around the fire road, workshop and blower housing and other buildings of safety distance shall be not less than 3O m. You must use the tests to determine compliance with carbonization furnace using coal, strengthen the observation of the furnace, found hanging phenomenon, immediately stopping treatment. Top should remain slightly positive pressure, the bottom row of Coke box should remain positive pressure. Secondary coal storage tank vent door, should remain the blocking non-stick. Gas main on automatic and manual valve should maintain a safe and effective, suddenly, or other failure immediately emptying. Mains water seal on tar ammonia exports should be kept for a period of not less than the pressure of 98O. At the top of the operation of the workers should wear asbestos underwear, furnace side aisle should set the asbestos fire screen. ③ use water for gas-gas, water gas in oxygen content not exceeding 1%, otherwise you must stop the furnace gas venting, prohibition of the importation of gas storage tank, and identify reasons dealt with in a timely manner. Regularly check valve, pipe, hydraulic system and auto chain store, it is necessary to pay attention to close tightly, ensure that their sensitive and reliable, to prevent leakage. Furnace lower wind pipe inlet of explosion-proof doors should comply with explosion-proof requirements. At the production stage, do not open the dust collector placed ash doors, ash, dust flying should be avoided. If there is fire danger, you should immediately stop the oven, close to the intermediate storage tank inlet valve to prevent reverse flow of gas in the tank. Production workshop should alsoSet the concentration of combustible gas detector. ④ use producer-production sites, you should set the concentration of combustible gas detector and good ventilation. Stove top fire detection hole steam jet steam seal, you must maintain a safe and effective. Periodically check the top feed valve to prevent gas diffusion into the reservoirs of Coke storehouse. Blower and exhauster should have interlocking device. Blower stops running, exhauster with it automatically. In stuffy furnace maintenance shall prevent the remaining gas furnace ash trays following back, causing the ash bucket explodes, fire, according to the aforementioned measures relating to the content. Stuffy furnace put into production after, you must first check the oxygen content in gas, in line with the standard requirements before and line aspirated. If there is a fire in the production process, you should stop the blower and exhauster, import and export of valves closed exhauster, closed water, cut off the power to stop the heating. Generally do not open the producer of the valve to reduce gas emissions suppression of diffusion, rapid implementation. ⑤ use oil-gas production, the tar pit of wastewater ponds and should cover, such as the use of open fire in the vicinity, also using wet burlap sacks and cover the gaps in the cover. Control washing the air box water height to prevent reverse flow of oil-gas heating stage into air regenerator resulting explosion; control of heavy oil heating temperature of not more than 5O, prevent oil volatility or spill. Air heat exchanger and catalytic reactors, to wash the air box explosion pressure relief should be safe and effective, explosion-proof film must comply with explosion-proof requirements. These devices require maintenance, should first do a replacement, cleaning, segregation and determination to meet the requirements. (4) purification process ① coke oven and carbonization furnace generally use indirect cooling cooler and negative pressure. Condensing liquid seal at the bottom of the cooler must be good. Carriage room and other related section should have the correspondence unit, to facilitate the timely notification of accidents, to take appropriate measures, in the room should also set the emergency backup power. Exhauster total bypass valve of the by-pass valve or, should always be flexible, open and close with relevant production exhauster workshop blower have interlocking device. In addition, all electrical equipment should be explosion-proof, airflow, and the prohibition of the use of the open fire. Instrument operation between separate establishment. Use electrical tar-tar mist removal, should ensure that the oxygen content in the gas does not exceed 1%. On the discharge of liquid coal tar, sealing tube must prevent the air down inhalation system. In addition, the equipment should also have good grounding device. ② conduct deaminase operation of establishments should have the explosion protection measures and good ventilation, and non-smoking, develop control measures and systems of fire. Sulfuric acid pump electrical lines should wear plastic pipe laying, sulphuric acid tank must be sealed. All equipment should be anti-corrosion treatment measures. The entire process should be determined by the total control of the by-pass asked, in case of emergency can be opened, not affect the normal operation of the whole factory. There is a fire, on the production system are immediately quarantined, relief, and other security measures to prevent the spread of fire, but no equipment to sulphuric acid, avoid drenching heat and splashing sulfuric acid. ③ for off-job of building the structure for the explosion-proof pressure relief, and setting the protection of the wall, and other buildings should maintain a certain fire separation. The workshop should be equipped with fire-fighting equipment and, if necessary, you can also set the combustible gas monitoring alarm. Benzene tank should be set with the diffusion tube arrestor. No smoking indoors, or outdoors in the steam, thermal tubing on baking clothing. All electrical equipment shall be used explosion-proof, telephone should be installed in place of air circulation. Should be strictly in accordance with the relevant provisions of the overhaul equipment, equipment of cleanup work must be carried out, clean diesel iron, timely processing, prevent spontaneous combustion. The entire process should take special care. On the device's internal overhaul using low pressure lamp and flashlight, you should open and close the device. In the maintenance of the vehicle during the drive-in, the should be mounted fire exhaust pipe. If you need in the Tower, tank, tank and pipeline connected groups by using the electric welding on Earth, would be on the resistance value is less than 2 ohm place to pick up locations. Exit at diffusion tube should set the steam blowing facility occurs due to lightning lit, should continue to maintain production, so as to avoid sudden cooling down the flame back occurs. ④ use wet desulfurization, you should always check the maintenance of the production system, liquid-level controller Occlusive should prevent air inhalation facilities of the desulfurization Tower, sulfur melting pot platoon-sulfur ointment, around forbidden to strengthen laboratory, sulfur warehouse, air compressor and ammonia refrigeration equipment for fire management; when using the dry method desulfurization, dry box at the top of explosion-proof safety plug should be flexible and effective, deactivated dry tanks is not open on the day of discharge hole at the bottom of the emission of waste sorbents you should be in the proper handling of the day, the fire service, shall be subject to strict cleaning and measured determination of explosion, deactivated dry box to remove the lid, in the dry box of oxygen content must be less than 2% (5) gas metering process metrology room should be explosion proof pressure relief wall surrounding the building, should be quarantined, and shall not be stacked fuel, indoor to have good ventilation and a flammable gas detection alarm, steam blowing equipment or inert gas dilution device. All bpv must be kept in good working condition, open and timely, easy to operate. (6) gas transmission and distribution process ① city gas storage tank capacity in M3 above, press 1O000 relevant requirements built on the edge of the city. From open flame or spark emission sites, civil construction, flammable and combustible liquid storage tanks, combustible material yard, CPI goods Depot fire spacing should not be less than 4O m, and the public railway line (Central line) of the fire separation should not be less than 25 m and highway fire separation should not be less than 15 metres, and overhead power lines of fire separation should not be less than the telephone pole height 1.5 times. Storage cabinet application railings around. Storage cabinets in the pre-production and overhaul must use gas replacement method and inert gas replacement method before replacement treatment to remove residual gas, through rigorous testing. Storage cabinet needs maintenance, there should be strict, comprehensive programmes to ensure that fire safety. Need to bring gas welding Moyes shall take the necessary measures. ② City gas pipeline and buildings, structures and the level of the adjacent channel spacing and vertical spacing, and burying depth, through ditches trench and avoiding other cross pipeline security measures should be consistent with national standards TJ28 — 78 "city gas design specifications". Gas dry pipe layout, its gas supply pipe network should have a ring. ③ gas pipelines need to stop gas pressure, its reliefTube height greater than 2 m, and far away from settlements and fire. Do not use open fire maintenance and high-temperature light fittings. Pipeline leaky Burns, should take the quarantine alert, clear the adjacent combustibles, and close to both ends of the gas valve. ④ underground gas pipelines shall be stacked flammable, explosive and corrosive liquids venue following through, and it and other pipeline or cable laying with Groove. Casing and waste should be safe and reliable. Where is likely to cause uneven settlement of pipe section, the Foundation should do the processing. Long distance should be buried pipe leak through strict and anti-corrosion protection measures. Also, according to a certain distance mounting block valve. ⑤ overhead gas pipeline, along the building outer wall or pole should be laid, and the lightning protection measures daochu static electricity. Pipe bracket disable combustion, also not permitted to hold around flammable and explosive materials. Through important plant equipment and living facilities, should have a casing. The basement is not suitable for laying of gas pipelines. Close to the high temperature heat source, isolation measures should be taken. Piping water seal along should maintain a maximum working pressure 147O Phra. Should each month on gas pipelines and valves to coloured SOAP water leak, discovered the problem in a timely manner. Û plastic gas pipes, should prevent the impact of other pipeline construction, and also to prevent heat and ignition. Underground pipe temperature to remain at around 23 degrees. Tube end interface should be tight, and metal pipe interface especially. The introduction of the plastic pipe client should be installed to cut off the source of the globe. ① pressure in the engine room should have a separate instrument operation management, engine room and the operation should be enclosed between isolation and non-smoking. Motor should be used in explosion-proof or draft type, the electrical lines shall not pass through the firewall, the engine room at the top of the window should open and close easily, transfer to airport in reciprocating compression packing box mouth, you should install the single suction blower. Indoor should also set your carbon monoxide alarm device. ③ surge generally installed in a separate building, roof should pressure relief facilities and buildings, public buildings should be spaced between 6 to 25 metres, application firewall separating the whenever necessary. Regulating device of the bypass valve and the outlet of the security seal, safety valve, must be sensitive and effective. Need maintenance, should be open all doors and Windows, you may not use the percussion tools can generate Sparks, maintenance has been completed should be promptly removed from combustibles. (7) by-product of refining operation of the distillation of coal tar ① should have low-temperature buffer stage, on top of distillation pot should be sensitive and effective safety valve, safety tube should be the same without water tanks. Distillation cauldron at the end of the gas burner should fire ignition device. Condenser should have the steam device. Transport coal tar, naphthalene oil and asphalt piping and valve should use steam jacket insulation, do not use open fire heating. Superheated steam oven should be set no diesel and combustible gas discharge, open refrigerated tanks, you must set the asbestos roof of the building. Required fire inspection must exchange, cleaning, inspection and analysis of qualified premise. ② make mention of the factory should have good ventilation, high pressure steam boiler house set, you should do well in isolation, fire separation nor less than 10 meters. Heater, evaporator, and other equipment pressure, temperature meter and glass Speculum, and so should periodically inspect and maintain secure, reliable, timely replacement. Equipment, pipeline and corrosion management should do and found damaged, processed in a timely manner. Strict adherence to the security operation procedures, various valves and pipelines, equipment, chemical solvent tank should be clearly marked. Phenol extract column height fire, around application canvas cover, it's phenol tank fire below, tanks, etc. should close the cover. For phenolic product toxic, corrosive and flammable and other characteristics, fire to cut off the power, as soon as possible and to prevent chemical burns and poisoning. (8) waste phenols process uses heavy benzene as extractant pulse leather from desulfurization phenols, except for heavy benzene release of distillation pot of residue must fill in a closed barrel miles, other fire safety requirements and the aforementioned purification process fire prevention measures "off-job". 2. liquefied gas as the development of the petrochemical industry, liquefied petroleum gas (LPG) supply continues to increase, many cities have formed a complete supply system (generally use pipeline, rail tank car, car tanks, tank ship four transportation modes), responsible for civil, small and medium-sized industrial and commercial users, such as the use of liquefied gas. Liquefied gas mainly from oil and gas and petroleum refining process get lighter fractions, are saturated and non saturated hydrocarbon mixtures. Due to its own fire and explosion hazards is larger, the supply process slightly inadvertently leak, fire, fire explosion occurs, causing casualties and damage. Therefore, strengthening the supply process is particularly important for fire management. 1. fire risk (1) liquefied gas of relative density is much better than air, at room temperature or volatile, such as in the reserve, transport and use of process leaks, fire burning explosion occur. (2) liquefied gas in gas-liquid coexisting vapor pressure is called saturation vapor pressure, the container will allow the saturation steam pressure is generally the conditions by 6O ℃, if exceeding the design temperature, there will be an explosion hazard. (3) liquefied gas by gas into liquid is pressurized or cooling method, when the speed of absorption of external heat to miss the evaporation rate, the latent heat of evaporation from the liquid itself, so that the liquid temperature drop, causing evaporation speed reduction effect of the use, in addition, use of cylinders, the way in the event of an accident, in addition, liquefied gas in gas and liquid phase equilibrium of dew point and boiling point is equal, warming and buck is boiling, caused by too much pressure will make the storage tank or embrittlement cracking occurred. (4) the operational staff in filling liquefied gas, accidentally sprayed in hand, both hands will cause frostbite. The liquefied gas in poorly ventilated under incomplete combustion produces carbon monoxide, and toxic. 2. fire precautions (1) liquefied gas supply systems and transport ① selection should be correct for the different levels of the pipeline. Liquefied gas in the tube flow should be controlled at O.8 ~ 1.4 m/sec, its transportation to the tube may not pass through the neighbourhood and public buildings, all piping in the start or end point, branch points and crossing railway, highway,!-highway and large rivers, and along every 10 ~ 20 km, set valve with protection casingThe ground pipeline between two valve, safety valve should be located underground pipeline segment valves shall be located between the relief valve. Pipe shall be mounted in a railway bridge and highway. The pipeline generally use bituminous glass fabric or yellow jacket (green), anti-corrosion coating of electricity law protection, at the start and end points of horizontal curves and straight every 1 kilometers should set a milestone in the pile. Underground pipeline built (structure) to build from, the adjacent pipeline between horizontal and vertical spacing should be consistent with the relevant requirements, the ground or planting trees, construction of temporary housing and stacking goods. ② by rail car transport liquefied gas, as well as the design, manufacture and acceptance of tank car tanks, should be consistent with the Bureau of Labor issued the LPG railway tanker safety management regulations "," pressure vessel safety technical supervision regulations "and the Ministry of chemical industry of the liquefied gas rail car technology monitoring provisions of the law. Tanks should be used "with bottom" manner, all loading and unloading valves and measurement instruments should be set in their in-hole cover, and guard. Loading pipe on emergency shut-off device. In the installation hole cover external should also have hand valve. Selection of tank car should choose a good performance, convenient operation and loading a large tank cars of the same model. Near the loading platform, should have the electrostatic grounding connectors. Û truck transport liquefied gas, should be consistent with the Bureau of labor of the LPG car tank car safety management regulations ". Tank car loading and unloading valve, pipe should be on emergency shut-off device, level, pressure testing, safety devices and into the hole. In LPG supply base handling, there should be a dedicated control device for unloading table (column). Working table (column) and other building (construction) construction and storage tank fire separation should be consistent with the architectural design fire protection standard). Loading platform with Earth wire near the head. ④ use tank ships carrying liquefied gases in bulk, the tank should be set water spray equipment, handling pipeline should be equipped with emergency shut-off devices, safety valve, pressure gauge, thermometer, breather. In the compressor room, pump room. Cabin, machine rooms, etc., also have a combustible gas concentration alarm, remote control of dry powder fire extinguishing system and sirens. To be equipped with fire hydrant on deck, cabin to make natural or mechanical ventilation. Low temperature and atmospheric pressure tank ships also have refrigeration equipment. Ashore should have anti-static grounding connector. (2) gas distribution plant (station) ① storage plant (station) should be set in the far away from cities, suburbs and cities under the leading wind all year round in the wind or wind measurement, and liquefied gas supply station of the average distance between should not be more than 1O km, and neighbourhoods, towns, important public buildings and facilities of the station fire separation should be consistent with the relevant provisions. At the same time avoid located in fault, landslides, debris flows, karst, quagmire, fault zone, ancient River, location, venue but also meet the vehicular traffic, turning, turning, etc. Ground cannot leave well, pits, caves, etc, or the construction of civil defense, underground passage, underground and half-underground building. ② should do a master planning, separated into the production area, auxiliary production area and living area; production operations building, the architectural design fire protection standard sipped class manufacturing plant design, fire resistance ratings should not be less than the second level, with good drainage. ③ tank farm should be set in the storage and distribution plant (station) perennial dominant wind direction downwind side or parallel downwind side a well-ventilated area. Tank farm should be around 1 meters of protective wall. Along the protective wall should have a fire ring, well there is a direct channel to storage and distribution plant (station) security entrances. Tank wall protection wall spacing should be not less than 1 m and greater than the radius of the largest tank. The safety distance between the tank should be consistent with the relevant provisions. Above-ground storage tank safe spacing should be not less than the adjacent large diameter of the tank, underground storage tank straight wall should be not less than the adjacent large cans of RADIUS, and should not be less than 1O m. Several tanks of the total volume of more than 2500 cubic meters, the grouping of single row layout, group and the distance between groups should be not less than 2O m. Area shall be located and fixed fire sprinkler installations and mobile water gun, and equipped with portable fire-fighting equipment. Fire-fighting water and water tanks of the architectural design fire protection standard law enforcement. ④ tank design, manufacture, installation and use is in compliance with the pressure vessel safety technical supervision regulations law and the local labour Bureau of the boiler or pressure vessel inspection by the management. licensor must In the import and export Department should be located in liquid valves, exit emergency shut-off valve should be located preferably set pressure, liquid level and temperature automatic detection of remote display instrument system, to larger tanks, should have the pressure, liquid level alarm device. Relief valve should be closed using the whole cycle, its opening pressure spring type should be the tank pressure of 1. 1-1.15 times, and should be installed diffusion tube. Safety valve and tank must be equipped with a valve. Spherical tank fire resistance of steel pillar application is not less than 2 hours of material insulation layer. Horizontal storage tank of bearing reinforced concrete should be used. Storage tanks on fire sprinkler installations, fire response with cupping, adjacent tanks and equipment for spraying, be cool. Tank farm also should have a reserve tank. ⑤ bottle shop should be fire-resistant rating no lower than level 2 of explosion-proof construction with reinforced concrete columns, frames, or bent structure with steel to should have the fire protection layer, ground should be can't happen sparks material laying. Bottle shop can be closed, open or semi-open. But closed should be explosion proof pressure relief measures, often breathing, maintain good ventilation. Doors and Windows should be outside, indoor spraying system and fire extinguishing equipment. ③ bottle and bottle shop in the same building, separated by a firewall and have separate entrances, evacuation should be consistent with the architectural design of the fire code requirements. Cylinders and parts of the design, manufacture, test and acceptance should be consistent with national and relevant departments of the provisions of the standard, not qualified in use. Cylinder maximum filling quantities and allows error shall comply with the relevant provisions. The filling of bottles should be individually checked heavy and leak, but not to carry out maintenance. Should be dedicated to empty shelf bottles upside down operation of liquid. Bottle library storage is the number of bottles, and are not allowed to exceed the monthly average amount of day filling 1-2 days. Real bottle and empty bottle should partition stack, generally allow double-layer stack, but has a capacity of 15 kg above must be single-layer stack. ① compressor and pump rooms of the building fire safety requirements are the same as with the bottle shop. Pump rooms and storage space should not be less than 15 metres, a firewall canReduce to 6 meters. Compressor room and instrumentation room, bottle shop in the same building, application firewalls to separate, and the distance between the door and window openings are not less than 6 metres. Room can be equipped with fire extinguishers. ③ pump can be placed in the open air, pump and storage tank pump between the spacing should be not less than 1 metre, its operation side and inner wall spacing should be not less than 1.5 m, the other side and inner wall spacing should be not less than O.5 m; compressor group spacing should be not less than 1.5 metres operation side and inner wall spacing should be not less than other 2.O m, and the interior spacing on the side should be not less than 1.2 m. Compressor inlet Park should set the gas-liquid separator, export the service should be set and gas separator. Pump and compressor inlet and outlet pipes shall be equipped with a valve, the valve outlet tube should be the last time before the bypass valve, pipe and the bypass valve. Set and export the best pump hose fittings, export also should have safe backset current valve liquid phase. Compressor diffusion tube should lead to outdoor and 2 m above the roof. ③ liquefied gas production process piping should be seamless, local used oil resistant rubber tube, it allows pressure should not be less than the pipeline design pressure of 4 times. All piping should be laid on the floor, and are not allowed to be laying in the trench. In forming closed on liquid segment should be mounted pipeline safety valve, the valve can use often centralized. Liquefied gas pipelines should be used in welding and flange diameter smaller than 2O mm pipes and valves, but also to consider is handy for maintenance and replacement, as well as ensure tank can hear each other down. In addition, you can put the liquefied gas liquid pipe painted gray, gas tube painted yellow, fire water pipe painted blue, painted red with steam pipes to show differentiate. (3) LPG supply station ① bottled supply station of the scale, generally not more than, its liquefied gas 1000O total reserves should not be more than 1O m³; gas station and mixed gas station of supply capacity, can be used to determine the General single tank should be less than 10 m3, total capacity of not more than 3O cubic meters. ② bottled supply station should be located in the center of the supply area, but not close to the concentration of public places, away from important material warehouses, and telecommunication, transportation hubs and other important facilities and have a safe and smooth operation of the driveway. Gas bottle library building fire resistance ratings should not be less than the second level, with wooden Windows and doors outwards, ground application anti-static material. Also located around the station without combustion of solid wall. Station cylinder library and station buildings or roads between fire separation should be consistent with the relevant provisions. Bottle library and living room of the fire separation should be not less than 1O m; cannot be repaired, and between the contiguous room adjacent to the management should be separated by a firewall. To get the real bottles and bottles are individually inspected and weighing, to guarantee security in stations bottle. Handling cylinders to handle with care, storage of single-layer stack should be real bottle and to prevent scrolling. ③ gasification station and mixed gas station yishe in gas supply objects area perennial leading wind direction downwind side. Storage rooms, gasification, mixed gas, pressure, gas hot water boiler construction of fire resistance ratings should not be less than the second level, and do a fire separation. Internal and external tank and stand construction (construction) construction or road fire separation should be consistent with the relevant provisions. Should have easy access for road vehicles, and close to the upper and lower channel and water sources. Storage tanks and storage tanks and the clear distance between the wall, should not be less than the adjacent large storage tanks of RADIUS. Storage tanks should be set spray equipment. Tank car loading platform (column) against the wall side should be a firewall, the horizontal distance from the doors and Windows is not less than 6 metres. Wet storage tanks and buildings, yard of the fire separation, should be consistent with the architectural design fire protection standard law. In addition, truck loading and unloading of the station should be well grounded, parking available at the time of its wood on the back. Forbidden truck bottle, tank car could not be used as a storage tank. When transporting liquefied gas must not exceed the maximum level of storage tank. Should be conducted regularly on the tank opened can of checks. (4) storage plant (station), supply station electrical safety facilities ① storage plant (station) and supply station of the bottle Gallery, gasification asked, mixed gas of the power load should be a "third class", the stands of fire service pumps electricity load should be a "secondary". Also, sites with gas Division of explosion risk level and scope for strengthening the electrical fire management. ② storage plant (station) production area of the building (construction) construction of lightning protection level, press the power design specification provided for in the second category. Indoor all metal equipment, metal pipe, metal frame, and so should have grounding device. Lighting facilities of jieshan Qi, down lead General directly located in the protected material, grounding resistance should be not more than 1O Europe and should and electrical equipment grounding connection. Tank body itself can do down lead and grounding device. Metal tube of the parallel laying of the tube spacing is less than 10O mm and cross-laying, shall do a crossover. A diffusion tube device can do in relief near the estuary of the lightning protection. ③ storage plant (station) production area should prepare for measures against static electricity. Metal pipe, equipment, track, filling the turntable of the center column, and so on, should be reliable earthing and grounding resistance should not be greater than 1O Europe. Do not use insulators of plastic plate high and rubber tubes, plates, etc. All personnel must wear anti-electrostatic gloves, shoes and uniform wear static before associate to production sites. In addition, you should periodically check the electrostatic grounding equipment testing and operations staff body electrostatic potential test. ④ in tank farm and other dangerous places, you should set the liquefied petroleum gas monitoring-leak alarm device. Also equipped with portable leak detector for use visiting detection. ⑤ storage plant (station) at least two zhiba, at least one alarm, the workshop (e) should have a phone, and completes the explosion-proof or sealing measures. ③ storage plant (station) you should set the "no smoke" warnings, and non-cultivated easily cause liquefied petroleum gases accumulated in the plant.
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