At least 0.27 yuan/day, Baidu library members can open it and view the full content in the library > gasoline and diesel stored in gas stations will naturally evaporate. Once the combustible gas is mixed with air, it will become very unstable and will burn quickly with a little external interference. Here is a brief introduction to the safety knowledge of gas stations: 1. Smoking is prohibited in gas stations.
After the car enters the gas station, drivers and passengers can't smoke inside or outside the station, because the gas station gathers too much combustible gas, and tiny sparks may cause a fire. Second, gas stations are forbidden to answer mobile phones.
When talking on a mobile phone, the internal current of the mobile phone increases, which may cause electric sparks and easily lead to fire. The third is to stop and turn off the gas.
Stopping and stalling can not only ensure the safety of refueling, but also avoid the occurrence of dangerous situations. Fourth, it is forbidden to use plastic containers for canned oil.
The friction of oil flowing in the plastic bucket will generate static electricity, but the plastic bucket is insulated, so the static electricity cannot be eliminated in time. When static electricity accumulates to a certain extent in plastic barrels, it will react with oil vapor, which is very dangerous, and even explode when static electricity is serious.
Fifth, don't wear or play chemical fiber, nylon or knitted clothes at the gas station. The friction between these clothes is easy to generate static electricity, which may ignite the oil and gas in the gas station and cause danger.
Sixth, it is forbidden to repair cars at gas stations. When repairing a car, the leakage of high-temperature components of the transmitter or electrical system will cause a fire, and the collision and friction between maintenance tools will easily generate static electricity and sparks.
Seventh, don't add too much oil. It is easy to cause oil leakage. Generally speaking, it is appropriate for the tanker to fill the tank automatically.
Eight is a non-dedicated self-service tanker, and drivers are prohibited from self-service refueling. Sometimes gas stations will meet the situation of queuing for gas. At this time, the driver should wait for the staff to refuel, and self-service refueling is prohibited to avoid and prevent misoperation.
Basic knowledge of gas station safety 1, come on.
2. Safety knowledge of LNG filling stations
1.The temperature of LNG at ambient atmospheric pressure is very low:-162℃; 2, with a large gas-liquid volume ratio, if the decompression measures are improper, it will lead to a rapid increase in pressure.
The gas-liquid volume ratio of LNG is about 620:1; 3. The gas loss rate is high due to the small injection amount and natural vaporization in the early stage; 4. LNG vehicles in cities inevitably have the problem of dispersion; 5. Natural gas is flammable, and there are obvious safety signs in the production area; 6. The skid-mounted LNG vehicle filling station should use complete safety measures and fixed points, and it is forbidden to move casually, and it is not allowed to trample on the vacuum process pipeline; 7. It is forbidden to collide with the storage tank during transportation, and the storage tank must maintain a certain degree of vacuum; 8. Keep the area where the equipment is located well ventilated; 9. When repairing or maintaining equipment, ensure that the system is depressurized; 10, away from flammable materials or electric sparks; 1 1, electrical parts and instrument parts cannot be flooded; 12, all electrical equipment in dangerous areas should meet the requirements of explosion-proof grade; 13. Open flames or any unauthorized electrical and communication equipment, such as mobile phones and radio transmitters, cannot be used in LNG areas. Matters needing attention LNG pressurization adopts LNG low-temperature high-pressure plunger pump for direct pressurization.
Pre-cooling is needed before starting the low-temperature and high-pressure piston pump. Pre-cooling opens the pump inlet valve and air return valve, LNG liquid flows into the pump head and fills the pump head, and the gas generated by pre-cooling returns to the storage tank from the air return pipe.
A temperature detection device is installed on the pump air return pipe. When the temperature of the air return port is lower than-100℃, it can be considered that the pre-cooling is completed after 5 minutes. When the pump starts, open the pump outlet drain valve, discharge the pump outlet pressure, start the pump, and close the outlet drain valve after the pump starts running. The PLC system can be completed automatically.
Listen to whether the pump is running normally or idling. Idle speed and normal operation are completely different. If idling occurs, the gas phase exhaust valve of the pump can be properly opened for exhaust. If the pump operates normally after exhausting, the exhaust valve can be closed. When it reaches 15S, if the pump still cannot work normally, stop the pump immediately and precool it again. Note that the full-load continuous operation time of any group of air-temperature gasifiers shall not exceed 8 hours. After 8 hours of operation, switch to another group of gasifier, and the deactivated gasifier can defrost naturally.
(PLC system can realize automatic switching) In areas with low ambient temperature, a water bath heater will be set behind the normal temperature gasifier to reheat the gas output from the normal temperature gasifier when the ambient temperature is low, so as to ensure that the gas temperature entering the gas storage well is ≥-5℃, and the PLC system will automatically complete whether the water bath heater is put into operation according to the outlet temperature. Pressurization of LNG storage tank When the pressure of LNG storage tank is too low ≤0.2MPa, the LNG storage tank should be pressurized.
3. What is the safety knowledge of gas stations?
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Original publisher: Xiaolan 17
Safety knowledge of gas stations Gasoline and diesel stored in gas stations will naturally volatilize. Once the combustible gas is mixed with air, it will become very unstable and will burn quickly with a little external interference. The following are the safety knowledge of gas stations: 1. Smoking is prohibited in gas stations. After the car enters the gas station, drivers and passengers can't smoke inside or outside the station, because the gas station gathers too much combustible gas, and tiny sparks may cause a fire. Second, gas stations are forbidden to answer mobile phones. When talking on a mobile phone, the internal current of the mobile phone increases, which may cause electric sparks and easily lead to fire. The third is to stop and turn off the gas. Stopping and stalling can not only ensure the safety of refueling, but also avoid the occurrence of dangerous situations. Fourth, it is forbidden to use plastic containers for canned oil. The friction of oil flowing in the plastic bucket will generate static electricity, but the plastic bucket is insulated, so the static electricity cannot be eliminated in time. When static electricity accumulates in plastic barrels to a certain extent, it will react with oil and gas, which is very dangerous, and even explode when static electricity is serious. Fifth, don't wear or play chemical fiber, nylon or knitted clothes at the gas station. The friction between these clothes is easy to generate static electricity, which may ignite the oil and gas in the gas station and cause danger. Sixth, it is forbidden to repair cars at gas stations. When repairing a car, the leakage of high-temperature components of the transmitter or electrical system will cause a fire, and the collision and friction between maintenance tools will easily generate static electricity and sparks. Seventh, don't add too much oil. It is easy to cause oil leakage. Generally speaking, it is appropriate for the tanker to fill the tank automatically. Eight is a non-dedicated self-service tanker, and drivers are prohibited from self-service refueling. Sometimes gas stations will meet the situation of queuing for gas. At this time, the driver should wait for the staff to refuel, and self-service refueling is prohibited to avoid and prevent misoperation. Basic knowledge of gas station safety 1, come on
4. What are the safety requirements of gas stations?
With the continuous development of automobile industry and the increase of car ownership, the pollution of automobile exhaust to the atmospheric environment is further aggravated.
With the development and utilization of natural gas resources, in order to improve the environmental pollution caused by gasoline and diesel combustion, compressed natural gas vehicles have been widely promoted and applied. In order to meet the demand of natural gas vehicle fuel, compressed natural gas vehicle filling stations have also been established. However, natural gas has the danger of fire and explosion, especially the safety technical problems such as high-pressure storage and transportation and oil-gas dual-fuel station, which must be paid great attention to.
I. Working principle and type of CNG automobile filling station 1. Working principle of compressed natural gas filling station The working principle of the filling station is to purify the natural gas transported to the filling station through the pipeline, then make the pressure reach 25MPa through the compression system, and finally add the compressed natural gas into the vehicle gas cylinders through the high-pressure gas cylinder group and the gas vending machine. Compressed natural gas filling stations usually consist of six systems, namely, pressure regulating and metering system, purification and drying system, gas compression system, gas storage system, equipment control system and gas sales system.
2. Types of compressed natural gas automobile filling stations are usually divided into: natural gas automobile filling stations, oil-gas mixed filling stations and parent-child filling stations according to their functions. A single natural gas filling station can only add natural gas fuel for automobiles, and oil-gas mixed filling stations can fill gas.
The main station is designed as a station connected with the gas pipeline, and the main work such as purification and compression of natural gas is completed at the main station, and the natural gas is pressurized to 25MPa to inflate the gas cylinders or gas cylinder trailers; The sub-station does not need to be connected with the gas supply pipeline, and relies on the gas cylinder trailer of the parent station to supply gas; Both the sub-station and the parent station can complete the work of refueling the car. Sub-station and mother station save construction funds and land, which is beneficial to centralized purification of mother station. The substation has low fire risk and can be built near the transportation hub, which is convenient to use.
From the perspective of equipment structure, gas filling stations can be divided into open structure and skid-mounted structure. The open structure is to install all the equipment of the filling station in the factory building, and assemble these equipment according to the high and low pressure pipelines and various valves of the process flow to form an open-loop process system; Skid-mounted structure is to concentrate main equipment (purification, compression, cooling, control, gas storage, etc.). ) installed on skid-mounted base, forming a complete equipment system that can be controlled in closed loop.
In terms of safety, skid-mounted structure is superior to open structure. Second, the fire risk analysis of CNG vehicle filling station 1. Natural gas is dangerous. Methane, the main component of natural gas, is a kind of combustible gas, with fire risk of 5%- 15% (V/V), minimum ignition energy of only 0.28mJ, fast combustion speed and high combustion calorific value (average calorific value is 33,440 kj/m3), which is harmful to air.
2. Leakage leads to accidents. The process in the station is under high pressure, and the process equipment is prone to leakage. There are many places where gas leakage may occur, such as pipeline welds, valves, flanges, gas cylinders, compressors, dryers, recovery tanks, filter tanks, etc. When the compressed natural gas pipeline is pulled off or the tanker accidentally loses control and hits the tanker, it will cause a lot of natural gas leakage. Once the leaked gas meets the ignition source, fire and explosion will occur.
On September 29th, 1995, the compressed natural gas filling station of Fushun Huayou Company in Zigong, Sichuan Province exploded due to cylinder leakage and combustion, causing great economic losses and casualties. 3. According to the technical requirements of compressed natural gas filling stations with high-pressure operation risk, the compressor of filling stations must be supercharged to more than 25MPa before natural gas can be compressed into steel cylinders, which are the storage containers with the highest combustible gas pressure in China at present.
If the quality of gas cylinders or pressurization equipment fails to meet the basic technical requirements, an explosion or fire accident may occur with slight negligence. 1995 10.7, the compressed natural gas filling station in Suining City, Sichuan Province was burned due to the quality problem of steel cylinders, and the flame column was as high as 20 meters, resulting in direct economic loss180,000 yuan.
When the system runs under high pressure, it is prone to overpressure, and the system pressure exceeds the allowable pressure it can bear, and finally exceeds the strength limit of equipment and accessories, resulting in explosion or local burst. 4. The poor quality of natural gas will bring danger. Under the condition that the free water in natural gas is not removed, the hydrogen sulfide in the accumulated water is easy to cause corrosion of steel cylinders.
Theoretically, the corrosion of hydrogen sulfide aqueous solution to cylinders or containers under high pressure is faster and easier than that in the pipe network below 4MPa. According to the inspection of cylinders that burst in previous accidents, the black water with pungent smell accumulated in some cylinders reached 2.5-5kg, and the hydrogen sulfide content in the accumulated water exceeded 8.083 mg/L.
1August 995 12, the compressed natural gas filling station of Mianyang local natural gas company, Sichuan province, exploded and caught fire when the gas cylinder was inflated due to unclean dehydration process. 5. There are many kinds of ignition sources. The vast majority of commercial automobile filling stations are built on the side of main traffic roads with frequent traffic. The surrounding environment is complex and threatened by external ignition sources, such as Fei Huo near the chimney of the building, fire near the building, frequent vehicles, artificial fireworks, lighter flames, electromagnetic sparks of mobile phones, friction caused by spikes, impact sparks, electrostatic sparks caused by chemical fiber clothing, sparks scattered by firecrackers and lightning strikes.
There are also many kinds of ignition sources in operation. The equipment control system of gas station is a system that controls all kinds of equipment in the station manually or automatically, which has potential electric spark. When the gas selling system works, natural gas flows in the pipeline at high speed, which is easy to produce electrostatic fire source; Improper use of tools during operation, or careless friction and collision sparks. 6. Safety training is not standardized. Operators of newly-built CNG filling stations are not familiar with new CNG technology, have not received necessary training, or have not been retrained regularly, so they are prone to illegal operation or violation of safety operation rules, know little about safety knowledge, especially fire protection knowledge, and cannot find fire hazards in time and have the ability to deal with unexpected accidents.
With the development of diversified management system in gas industry, some small and medium-sized enterprises with irregular operation seriously ignore the business training of operators. Third, the fire protection of CNG automobile filling station 1. The fire protection distance meets the requirements of compressed natural gas filling.
What knowledge do you need to master when working in a gas station?
1 Scope This standard specifies the terms and definitions of fire safety management in gas stations, fire safety responsibilities and duties, fire safety systems and operating procedures, equipment management in station rooms, explosion-proof and fire prevention management measures, fire inspection and hidden dangers rectification, publicity and education training, fire emergency evacuation drills, fire files, etc.
This standard is applicable to commercial automobile gas stations. Other gas stations can also refer to the implementation.
2 normative reference documents The clauses in the following documents become the clauses of this standard through the reference of this standard. All subsequent modifications (excluding errata) or revisions of dated reference documents are not applicable to this standard. However, parties who have reached an agreement according to this standard are encouraged to study whether the latest versions of these documents can be used.
For undated reference documents, the latest edition is applicable to this standard. GBJ 16-87 Code for Fire Protection Design of Buildings GB50058-92 Code for Design of Electric Devices in Explosive and Fire Dangerous Environments GB50 156-2002 Code for Design and Construction of Automobile Filling Stations 3 Terms and definitions are applicable to this standard.
3. 1 gas station Automobile gasoline gas station is a professional business place for refueling motor vehicle gasoline and diesel fuel tanks. Note: Gas stations belong to key units of fire safety.
3.2 The underground storage tank of buried oil tank is a horizontal storage tank buried underground by directly covering the soil or filling the tank with sand (fine soil). The highest liquid level in the tank is 0.2m lower than the lowest ground elevation within 4m outside the tank. 4 Fire safety responsibilities and responsibilities 4. 1 It is generally stipulated that gas stations should be designed and constructed in accordance with GB50 156-2002, and put into use after being examined and accepted by the public security fire department.
Gas stations should implement the fire safety responsibility system step by step and post by post, and clarify the fire safety responsibility. The gas station shall report to the local public security fire department for the record, establish a contact system with the local public security fire department, and timely reflect the fire safety management of the unit.
4.2 Person in charge of fire safety The stationmaster or company manager of the gas station is the person in charge of fire safety of the gas station, who is fully responsible for the fire safety work of the unit and performs the following duties: a) Organize the establishment of a regular fire safety meeting system and hold a fire safety work meeting at least once a month; B) Organize fire prevention inspection and attend at least once a month; C) Organize the rectification of fire hazards and be responsible for raising funds for rectification; D) Organize the establishment of fire control organizations, and organize fire control publicity and education, fire fighting and emergency evacuation drills at least once every six months; E) Implement laws and regulations to ensure that the fire safety of gas stations meets the requirements. The person in charge of fire safety may designate a fire safety administrator to assist in the work, and the fire safety administrator shall report the fire safety work to the person in charge of fire safety at least once a month.
The person in charge of fire safety and the manager of fire safety shall report to the local public security fire department for the record. 4.3 Fire safety management personnel: each shift of the gas station shall be provided with * * * safety officers.
The safety officer shall perform the following duties: a) check the implementation of the fire safety system and operating procedures by personnel in each post; B) Conduct fire prevention inspection and record the inspection; C) Deal with fire hazards in time and report to the fire safety manager or the person in charge of fire safety. 4.4 Other personnel Other personnel should strictly implement the fire safety system and operating procedures, participate in fire safety education and training, master the fire fighting methods at the beginning, and report to the police in time when a fire is found.
The oiler shall also be responsible for the fire safety at the refueling site, and shall not allow irrelevant personnel such as vehicle drivers to carry out refueling operations. The measurer should also prevent the phenomenon of running, running, dripping and leaking, and supervise the oil unloading.
5. Fire safety system and operating procedures 5. 1 Fire safety system and system essentials 5. 1. 1 Fire safety regular meeting system should include meeting convening, personnel composition, meeting frequency, topic scope, decisions and meeting minutes. 5. 1.2 The fire safety education and training system should include the responsible department, responsible person and responsibilities, frequency, training target (including special jobs and new employees), training requirements, training contents, assessment methods, situation records and other key points.
5. 1.3 The fire duty system shall include the scope and responsibilities, emergency handling procedures, reporting procedures, work handover, number of people on duty, requirements and records. 5. 1.4 The fire prevention inspection and fire hazard rectification system shall include the responsible department, responsible person and responsibility, inspection frequency, participants, inspection place 7A64E4B893E5B19E31333236393035 and its contents, fire hazard identification, disposal and reporting procedures, rectification responsibility and nursing measures, and situation.
5. 1.5 Lightning protection, antistatic and electrical equipment. The line inspection management system should include the responsible department, responsible person and responsibility, facility registration, inspector qualification, inspection location, content, inspection tools, handling procedures when problems are found, and situation records. 5. 1.7 The safety management system for fire electricity shall include the responsible department, responsible person and responsibilities, key parts and facilities, electrician qualification, hot work approval procedures, testing and management requirements, handling procedures when problems are found, and situation records.
5. 1.8 The maintenance management system of fire-fighting equipment should include the responsible department, responsible person and responsibility, management requirements for equipment registration, storage and maintenance, and situation records. 5. 1.9 The organization and management system of compulsory fire fighting should include the organization and personnel, post responsibilities, regular meetings, education and training, activity requirements and other key points.
5.1.65438+5.1.11The reward and punishment system for fire safety assessment should include the responsible department and person, assessment objectives, contents and methods, and reward and punishment methods.
5. 1. 12 Other necessary fire safety systems Gas stations should also formulate other necessary fire safety systems such as inflammable and explosive dangerous goods and site management. Note: The fire safety system should be published. Note: It can be modified at any time according to the actual situation.
5.2 Fire safety operation regulations 5.2. 1 Fire safety regulations for oil unloading operations should include the following contents: a) Oil unloaders should wear anti-static work clothes and shoes when they take up their posts; B) After the tanker enters the station, the unloading personnel shall check whether the safety facilities of the tanker are complete and effective. After passing the inspection, guide the tanker into the unloading site and connect the electrostatic grounding; C) After the tank car is stopped for 3min, the oil unloader connects the oil unloading pipe and the joint according to the process flow.
6. What are the fire safety requirements for power supply and distribution in gas stations?
Fire safety requirements for power supply and distribution of gas stations: 1.
Emergency power supply should be set for power supply and distribution of gas stations. The power supply load of filling station mainly refers to the electricity consumption of filling machine, compressor and pump. Due to the sudden power failure of these equipment, it usually does not cause casualties or major economic losses.
Therefore, according to the power load classification standard, it should be a three-level load. However, with the improvement of automation level of information systems such as automatic temperature and liquid level detection, combustible gas detection and alarm system and computer-controlled gas dispenser, once the power is suddenly cut off, the system will not work normally, which will bring harm to the operation and safety of gas filling stations. Therefore, the power supply of information system should be equipped with emergency power supply.
2。 Power supply and distribution of gas stations should be economical and energy-saving. From the economic point of view, the external power supply with voltage of 380V/220V should be selected for LPG, LNG filling stations and their co-construction stations. The power supply of compressed natural gas filling station and its co-construction station shall be external power supply with a voltage of 6kV/ 10kV.
3。 The power supply and distribution of gas stations should be equipped with emergency lighting. Because the first and second filling stations and filling stations are places with frequent people flow, once the power is suddenly cut off, it will bring difficulties to the operation of enterprises or the evacuation of personnel from dangerous places.
Therefore, fire pump room, business room, work shed, liquefied petroleum gas storage and compressor room should be equipped with emergency lighting. 4。
The low-voltage distribution room can be located in the station building. When it is difficult to use external power supply for gas filling stations, small internal combustion generator sets can be used to solve the power supply problem of gas filling stations. However, since the internal combustion generator set is a non-explosion-proof electrical equipment, an exhaust flame arrester should be installed at the exhaust port to prevent or reduce the emission of Mars.
At the same time, the horizontal distance from the smoke outlet to the boundary of each explosion danger area: the smoke outlet is 4 from the ground. When it is less than 5m, it should not be less than 5m, and the smoke outlet should be higher than the ground 4.
5m and above should not be less than 3m, in order to avoid the ignition of explosive mixture by Mars. Since all stations of the filling station are outside the explosion danger zone, the low-voltage distribution room can be located in the station.
5。 Cable and pipeline laying requirements, in order to ensure the safety of power supply cables and prevent them from being crushed by cars, the power supply cables of gas stations should be directly buried, and the parts crossing the roadway should also be protected by steel pipes.
The more distribution cables, the more maintenance. In order to facilitate maintenance, cable trench can be used. However, in order to prevent cable trench from entering explosive gas mixture and causing explosion and fire accidents, cable trench must be filled with sand.
In order to avoid the mutual influence between cables and pipelines, cables shall not be laid in the same trench as oil, liquefied petroleum gas, natural gas pipelines and heating pipelines. 6。
Electrical equipment shall meet the requirements of explosion-proof grade. According to the characteristics of the gas filling station, the electrical equipment in the explosion danger area in the gas filling station should meet the requirements of explosion-proof grade, that is, natural gas, liquefied petroleum gas or liquefied natural gas should be selected as explosion-proof electrical equipment, and the explosion-proof grade should not be lower than d II AT3. Non-explosion-proof electrical equipment can be selected outside the explosion danger area.
However, considering that the lamps under the shed are often in a dusty environment and rainwater may splash on them, energy-saving lighting lamps with protection grade not lower than IP44 should be selected. Because the relative density of compressed natural gas is small, it will naturally gather in the upper part of the space when it escapes, so if the ceiling of the compressed natural gas filling station is a closed ceiling, then the ceiling should also be provided with exhaust holes.
If there is no vent, the lamps in the shed should also meet the requirements of explosion-proof grade.
7. Help me answer some questions (about gas stations) Thank you.
1，A 2，B 3，A 4，B 5，A 6，B 7，A 8，D 9，D 10，B 1 1，C 12，A 13，A 18。 The responsible person has not been dealt with; Never let go of not having received education; If there are no corrective measures, prevention should be given priority, and prevention and elimination should be combined with upwelling; According to 3 to 5 meters; Aim at the source of the fire and use a fire extinguisher.
Certificate of approval, whether the engine is turned off, whether the power supply in the car is turned off, and whether anyone in the car has not got off; Medium: whether there is leakage, loose fittings, normal aerator, and whether the customer violates the rules in the station; After that: check whether all valves are closed and whether the quantity is correct. There are two situations: replacing the sealing ring and replacing the gun head.
The top ten prohibitions are too long, so I won't talk about them here.
8. Gas safety knowledge
Instructions for users of natural gas In order to ensure the smooth installation of natural gas and the safe use of natural gas by users, our company puts forward the following requirements for users in view of the common mistakes made by some users in using natural gas: 1. Users must widely publicize the "User Instructions" to users in their own units or areas, so that all users can understand this "User Instructions" and follow it.
2. Without the permission of the supplier, the gas pipeline shall not be added, dismantled or modified, and the gas supply facilities shall not be changed or damaged. If the gas supply facilities are damaged, or the pressure test must be re-tested because of the removal of the gas pipeline, the relevant construction costs must be borne by the user.
3. The gas metering device shall not be replaced or changed without authorization, and the gas pipeline and gas meter shall not be wrapped during decoration. Otherwise, normal gas supply can only be carried out after removing all obstacles that hinder safe gas supply. Four, according to state regulations, users who use natural gas are not allowed to use the second fire source in the same space.
The user's gas place must be spacious and well ventilated. If the conditions are not up to standard, the conditions for safe gas use shall be created according to the requirements of suppliers. Otherwise, the supplier will stop gas supply until the safety conditions are met. 5. Users who stop using gas or change the use of gas or expand the scope of gas use shall apply to the supplier for relevant procedures, and the supplier will be held accountable according to relevant laws and regulations.
Publicity Sheet for Safe Use of Natural Gas Natural gas has been accepted by the general public because of its advantages of convenience, cleanliness, economy, energy saving and environmental protection, and the number of users is increasing day by day. However, many users lack the knowledge of safe use of natural gas and the experience of emergency treatment in case of accidents. In order to reduce and avoid the occurrence of user safety accidents, we now publicize the nature and safe use of natural gas in the form of questions and answers. Please follow this operation strictly.
1. What are the components and properties of natural gas? A: Composition: The main component is methane (more than 95%), and a small amount of hydrogen sulfide and water vapor. Properties: colorless and transparent, lighter than air, flammable and explosive, etc.
It is particularly important to note that natural gas belongs to Class A flammable and explosive gas, with an explosion limit of 5.3%- 1.5% and a minimum ignition energy of 0.28 mJ. 2. Does natural gas smell? What is that smell? Why? Answer: Natural gas itself is colorless and odorless, but in order to prevent leakage and facilitate users to smell it, odorizing agent is specially added in the process of natural gas transmission and distribution.
3. What gas will be produced by natural gas combustion? Under what conditions? How to use it safely? A: Under the condition of air circulation, methane burns to produce carbon dioxide and water. Although a small amount of sulfur dioxide is produced, the combustion of hydrogen sulfide produces sulfur dioxide and water, which will not cause any harm to human body. In a closed space without air circulation, methane combustion will produce carbon monoxide due to lack of oxygen, which will cause death.
Proper use, when using gas appliance, the place where it is located must keep air circulation. (1 m3 natural gas (purity calculated by 100%) needs about 2.0 m3 oxygen and about 10 m3 air to burn completely. 4. What about natural gas leakage? Answer: In case of natural gas leakage, all indoor valves should be closed, doors and windows should be opened, indoor air circulation should be maintained, and the gas company should be reported immediately (Tel:).
Don't use any gas appliance at this time, don't switch the power supply, and don't bring any Mars to prevent objects from colliding and sparking. 5. What if there is natural gas poisoning? Answer: For mild patients (runny nose, tears, dizziness, brain swelling, etc.). ), just move the patient outdoors to breathe fresh air and recover in a short time.
Severe cases (numbness of limbs, vomiting, coma, unconsciousness, foaming at the mouth, etc.). ) should be sent to the hospital for emergency treatment, be sure to explain to the doctor that it is natural gas poisoning. 6. What if the natural gas catches fire? Answer: If possible, close all valves and report to the gas company and "1 19" as soon as possible.
Don't panic, explain that the fire was caused by natural gas, and explain the detailed location and contact number of the fire. 7. What are the requirements for using gas? Answer: No one is required to stay when using. If the gas stops during use (mostly due to facility failure), you should close the valve of gas appliance and call the gas company. Never make a phone call without closing the valve.
8. What should the natural gas company pay attention to when notifying to stop gas? Answer: The valve should be closed when the gas is stopped. Do not open the valve until ventilation is restored. If there is no gas when the gas supply is resumed, you should contact the natural gas company by telephone.
9. What should the market pay attention to when purchasing gas stoves, wall-hung boilers, water heaters and other products? Answer: The purchase of gas stoves, wall-hung boilers, water heaters and other commodities must be produced by manufacturers with production licenses, product certificates, safety instructions and obvious warning signs. The gas appliances used must be tested by the testing center designated by the local gas administrative department; After being registered by the safety supervision department designated by the local administrative department, it can be sold and used.
Prevent fake and shoddy products from endangering the safety of citizens' lives and property. 1 1. After installation, how do users manage indoor and outdoor gas supply facilities? How to apply for ventilation? Answer: After installation, all valves are closed and must not be opened! If you need gas, please ask the natural gas company to ventilate and debug you, and explain how to use natural gas facilities, gas appliance and related matters needing attention correctly. Please sign the safety disclosure form when you are familiar with the explanation.
12. Can a second fire source be used near gas appliance? No second fire source is allowed near gas appliance. Such as electric furnace, liquefied petroleum gas furnace, coal furnace, etc. , so as not to cause a fire accident.
13. Why can't people live in places with natural gas facilities? What should I pay attention to? In kitchens and places equipped with natural gas pipelines, gas meters, stoves and other equipment, sundries, inflammable and explosive articles and open flames are not allowed to be piled up. It is forbidden to live as a bedroom.
Because, once natural gas pipelines, gas meters, stoves and other equipment are damaged and leaked, it is easy to cause fire or poisoning and other dangers. 14. How to check air leakage? Users should always pay attention to check whether natural gas pipelines and equipment are leaking. When checking, soapy water can be applied to places where air leakage may occur, such as the joints of pipes, instruments, stove switches, etc. If there is air leakage, bubbles will be blown up there.
It is forbidden to check the leakage with open flame. Natural gas companies regularly strengthen public inspections, and full-time inspectors equipped by the company enter users' homes.