(1) Gas cylinders must be inspected by the technical supervision department, and those that have not been inspected shall not be filled for use.
During ventilation, users should check the safety of gas cylinders and assist service stations to dynamically detect the leakage of gas cylinder angle valves. (2) The gas cylinder should be placed in a place that is easy to move, ventilated and dry, and not easy to be corroded.
In order to catch my breath or have an accident, it is more convenient to move out. To prevent wet or splashing oil, salt and oil from corroding the cylinder, keep the cylinder clean.
(3) Gas cylinders shall be protected from exposure and shall not be near open flames or high temperature places. Because the pressure in the gas cylinder rises with the increase of temperature, once the pressure in the cylinder rises abnormally, it will be dangerous.
(4) The gas cylinder should be used upright, and it is forbidden to stand upside down or lie down, because the pressure regulator installed on the gas cylinder acts on the gas of liquefied petroleum gas. If the gas cylinder is upside down or lying flat, the liquid will flow out, and the liquid will become gas and spread for 250~ 300 times, which will cause large-scale combustion and even explosion, which is very dangerous. (5) No matter whether the bottle is full or empty, it is forbidden to drop, kick, roll or bump.
Because it is light, it will damage the paint, the cylinder will be deformed and scrapped, and even the cylinder will be damaged, causing fire and explosion accidents. (6) It is forbidden to burn the steel cylinder with boiling water and forcibly gasify it.
(7) When in use, the gas cylinder and the cooker should be placed in parallel, and the distance between the gas cylinder and the cooker should not be less than 80cm. Cylinders are not allowed to be placed under the stove to prevent accidents caused by air leakage.
2. What should I pay attention to when filling?
Liquefied petroleum gas is a household fuel commonly used by residents at present. It is convenient and hygienic, but it is dangerous in the process of filling, using and transporting liquefied petroleum gas. Therefore, in the process of filling, using and transporting liquefied petroleum gas, special attention should be paid to safety, and the following matters should be strictly observed: (1) Before filling liquefied petroleum gas, the cylinders used should be inspected first, and if any of the following circumstances is found, the cylinders should not be inflated: 65438. 2) The periodic inspection period has passed; The steel seal mark on the gas cylinder is incomplete or illegible; 3) The bottle body is seriously polluted or stained with grease; 4) The safety accessories of gas cylinders are incomplete or do not meet the safety requirements, such as incomplete valves.
(2) When filling liquefied petroleum gas, first of all, it should be determined whether the residual substances in the gas cylinder are consistent with the liquefied petroleum gas to be filled, so as to avoid mixing. When filling gas, do not overdo it, and make detailed filling records for enquiry.
When transporting and using liquefied petroleum gas cylinders, it is forbidden to impact or vibrate the cylinders; It is forbidden to place gas cylinders in high-temperature heat sources or expose them to the scorching sun. Pay attention to close the bottle valve at ordinary times, and don't freeze it.
The room where liquefied petroleum gas cylinders are placed should be well ventilated.
3. What regulations should cylinder filling personnel abide by?
Quality requirements of gas cylinder filling work
Can check the following items of cylinder filling one by one. Inspection requirements comply with relevant regulations, with complete records and requirements.
(1) appearance;
(2) regular inspection;
(3) Signs (color signs, steel seal signs, warning labels);
(4) Filling medium and its pressure (weight);
(5) Accessories, including bottle valve and shockproof ring.
Gas cylinders containing flammable and toxic media should be checked for leakage after filling.
C2 filling can ensure the quality and meet the following requirements:
(1) The filling process can be operated according to the regulations, and there are special personnel to carry out patrol inspection;
(2) The temperature, pressure and flow rate of gas cylinder filling conform to the regulations;
(3) The filling time and static time of dissolved acetylene cylinders meet the requirements. After filling, the cylinders should be weighed one by one and the pressure should be checked;
(4) The filling quantity of liquefied gas bottles shall comply with all relevant regulations and be repeatable;
(5) The filling pressure of permanent gas meets the requirements;
(6) Fill in the filling process record carefully and timely;
(7) Files have been established for filled gas cylinders.
4. What regulations should cylinder filling personnel abide by?
The quality requirements for cylinder filling are that the following items can be checked one by one for the filled cylinders. Inspection requirements comply with relevant regulations, and records and requirements are complete. (1) appearance; (2) regular inspection; (3) Signs (color signs, steel seal signs, warning labels); (4) Filling medium and its pressure (weight); (5) Accessories, including bottle valve and shockproof ring. After filling, gas cylinders containing flammable and toxic media should be checked for leakage. C2 filling can ensure the quality and meet the following requirements: (1) The filling process can be operated according to the regulations, and there is a special person to conduct patrol inspection; (2) The temperature, pressure and flow rate of gas cylinder filling conform to the regulations; (3) The filling time and static time of dissolved acetylene cylinders meet the requirements. After filling, the cylinders should be weighed one by one and the pressure should be checked; (4) The filling quantity of liquefied gas bottles shall comply with all relevant regulations and be repeatable; (5) The filling pressure of permanent gas meets the requirements; (6) Fill in the filling process record carefully and timely; (7) Files have been established for filled gas cylinders.
5. Safety knowledge of liquefied petroleum gas
I. Basic knowledge of liquefied petroleum gas Liquefied petroleum gas is a light component obtained during petroleum processing and a mixture of saturated and unsaturated hydrocarbons. Liquefied petroleum gas is flammable and explosive, so attention should be paid to prevent leakage and maintain air circulation in gas appliance. (I) Liquefied petroleum gas components Liquefied petroleum gas is mainly composed of hydrocarbons such as propane, propylene, n-isobutane and n-isobutylene, and also contains a small amount of impurities such as pentane and sulfide. The composition of liquefied petroleum gas obtained by different production processes is different. (2) The main feature of liquefied petroleum gas (1) is inflammable and explosive, which is more dangerous than gasoline and natural gas. When liquefied petroleum gas reaches a certain concentration in the air, even in cold areas, it can quickly cause combustion when it encounters tiny sparks caused by static electricity or metal impact. The mixed concentration of liquefied petroleum gas and air is 2-65438+. It will cause an explosion. (2) The gas-liquid volume ratio is large and volatile: at normal temperature and pressure, liquid liquefied gas is rapidly gasified into 250-350 times the volume of liquefied gas. (3) The specific gravity of liquid is lighter than that of water, and it floats on the water like oil, which is about half of the specific gravity of water. (4) The specific gravity of gas is heavier than that of air, which is about 1.5 12 times that of air. (5) The volume expansion coefficient is large. The volume expansion coefficient of liquefied petroleum gas is about 10 ~ 16 times that of water at the same temperature. With the increase of temperature, the volume of liquid will continue to expand and the pressure of gas will also increase. The volume will expand by 0.3~0.4% when the temperature rises by 65438 0℃. The pressure increases by 0.2~0.3MPa. (6) The boiling point is low. Generally the boiling point is below 0℃. In China, especially in the south, it can be gasified naturally even in the coldest temperature conditions in winter. (7) Low flash point. Below 28℃, the lowest combustion temperature of volatile mixed gas is called flash point, which is the precursor of fire. Mainly a small amount of sulfide, slightly corrosive to steel equipment and soluble to rubber. (9) Smell: LPG has no special smell. In order to easily detect leakage, additives such as ethanethiol are added to liquefied petroleum gas to increase its odor. (10) toxic asphyxia: liquefied petroleum gas has low toxicity, and when the concentration of liquefied petroleum gas in the air exceeds 1%, people will vomit. When it reaches 10%, people will be anesthetized after two minutes, and people will suffocate when inhaling high-concentration liquefied petroleum gas. Second, the purchase of liquefied petroleum gas should pay attention to related issues (1) Chengdu bottled liquefied petroleum gas cylinders should have steel grades, and the angle valve should have a sealant sleeve (the sealant sleeve has the number of the cylinder filling unit). The gas supply device can be found according to the steel grade and quantity of the sealing rubber sleeve. If users buy unsealed rubber sleeves, their legitimate rights and interests will not be protected. (2) Regulations on Filling Weight of Liquefied Petroleum Gas (GB 1 1627-98): The total filling weight is 5 Kg, and the steel cylinder is 4.8±0.2Kg；; ; ≥ 10.6 Kg 15 Kg steel cylinder14.5 0.5kg; ; ≥29.8 Kg 50 Kg steel cylinder 49.01.0kg. ≥ 93.0kg. ≥ 93.0 kg (3) The user only needs to pay the gas fee to the supplier (the deposit payable for using the gas cylinder for the first time will not be fully returned to the user with the receipt), and the supplier shall not charge unreasonable fees such as account opening fee, agency fee, gas cylinder wear fee and gas cylinder inspection fee. If liquefied petroleum gas cylinders and stoves are installed in the bedroom, air leakage will easily lead to suffocation or fire and explosion accidents. 2. How to prevent the cooker and the switch on the cooker from being damaged and leaking? To master the use of the switch correctly, we should always pay attention to and educate children not to play with the switch. Because the switch is broken or forgotten to turn it off, it is easy to cause air leakage and cause fire or other accidents. 3. Why should someone take care of LPG? When using liquefied stone gas, always pay attention to the combustion situation, adjust the flame size and color, and maintain normal combustion. Do not boil soup to extinguish the flame, or use a small fire when the flame is blown out by the wind and the switch is not turned off, resulting in a large amount of liquefied gas leakage, which will lead to fire or explosion accidents in case of open fire. 4. What are the causes of air leakage? (1) The switch on the gas cylinder is not closed or the compression nut under the handwheel is not tightened; (2) The oil-resistant hose is aging, cracked, burned or the socket is loose; (3) The cock switch on the cooker is not tight; (4) The hand wheel of the pressure reducing valve is not tightened or the rubber washer is lost, damaged, deformed or fallen off. 5. How to identify the leakage of LPG cylinders and cookers? Every time a gas cylinder is changed or a special smell is smelled, or the sealing rubber sleeve is found to be damaged, the user can smear all the joints with soapy water. If bubbles appear, it means air leakage. It is forbidden to use open flame to check air leakage. 6. What should I do if I find air leakage? (1) If air leakage is found, first turn off the angle valve switch and open the doors and windows for ventilation. All kinds of kindling are prohibited from approaching. Don't switch on or off electric lights or other electrical equipment. Please ask the professionals of the supply unit to handle it. (2) If there is a large amount of air leakage and the angle valve switch fails, first of all, we should guard against all kinds of kindling, and don't switch lights or other electrical equipment. In addition to calling the police immediately, try to use plastic sheets as soon as possible. (1) If the joint of cooker, hose and pressure reducing valve leaks and the fire is not strong, just turn off the gas cylinder angle valve switch, which will automatically turn off under normal circumstances. If the fire is large, a large piece of wet cloth can be used to put it out; (2) If the joint between the gas cylinder and the angle valve is on fire, or the angle valve cannot be closed due to fire, or the angle valve switch fails due to fire, on the one hand, the gas cylinder should be cooled with water, and the flame should be put out quickly after being soaked with quilts and blankets, and then try to bind it to prevent leakage, and please ask the professionals of the supply unit to deal with it as soon as possible. Send it to the supply station for processing; (3) If there is a fire indoors, don't panic, quickly turn off the angle valve switch, unscrew the pressure reducing valve or cut the hose, and move the gas cylinder to a safe and open place outdoors. If the temperature of the bottle is high, cold water should be used to cool it, and the supplier should be informed to handle it. 8. What if there is residual liquid in the gas cylinder? Due to the influence of the quality and temperature of liquefied petroleum gas, it is normal to have a small amount of residual liquid in the gas cylinder, so users must not dispose of it by themselves, because the residual liquid is easy to volatilize after being poured out, in case of fire.
6. What conditions do cylinder filling operators need to have before they can take up their posts?
Basic conditions for operators 1, operators engaged in gas cylinder filling positions; Have a high school education or above; 2. At least 18 years old; (If the female is over 55 years old and the male is over 60 years old, the application for professional and technical assessment of special equipment operators will no longer be accepted. ) 3. Be in good health and hold the Physical Examination Form for Operators of Special Equipment and the Qualification Application Form for Operators of Special Equipment who have passed the physical examination at or above the county level. The assessment object must be approved and declared by the unit.
The quality requirements for cylinder filling are that the following items can be checked one by one for the filled cylinders. Inspection requirements comply with relevant regulations, with complete records and requirements. (1) appearance; (2) regular inspection; (3) Signs (color signs, steel seal signs, warning labels); (4) Filling medium and its pressure (weight); (5) Accessories, including bottle valve and shockproof ring.
Gas cylinders containing flammable and toxic media should be checked for leakage after filling. C2 filling can ensure the quality and meet the following requirements: (1) The filling process can be operated according to the regulations, and there is a special person to conduct patrol inspection; (2) The temperature, pressure and flow rate of gas cylinder filling conform to the regulations; (3) The filling time and static time of dissolved acetylene cylinders meet the requirements. After filling, the cylinders should be weighed one by one and the pressure should be checked; (4) The filling quantity of liquefied gas bottles shall comply with all relevant regulations and be repeatable; (5) The filling pressure of permanent gas meets the requirements; (6) Fill in the filling process record carefully and timely; (7) Files have been established for filled gas cylinders.
7. What matters should be paid attention to when filling liquefied gas cylinders?
(1) The scales used for filling measurement should be accurate.
The weighing scale shall be equipped with overload alarm and automatic gas cut-off device. ② The filling quantity of liquefied gas must be accurately measured and strictly controlled.
The re-inspection system of filling weight should be implemented. If the cylinder is found to be too full, it must be pulled out in time. If the weight mark of the gas cylinder is unclear or it is difficult to confirm due to corrosion and wear, filling is not allowed.
③ When the oxygen content in flammable liquefied gas reaches or exceeds the following specified value, it is forbidden to bottle: a. The oxygen content in ethylene reaches or exceeds 2% (calculated by volume, the same below); B the oxygen content in other combustible gases is 4%. (4) When using snap connection instead of threaded connection for filling, it must be carefully checked to confirm that the outlet thread of bottle valve is consistent with the thread form specified for filling gas.
⑤ When filling combustible gas, it is forbidden to knock the bottle valve or pipeline with wrench and other metal instruments. ⑥ In the process of filling, the inspection of filling system and gas cylinder seal should be strengthened.
⑦ Operators should be relatively stable, and conduct regular safety education and assessment.
8. What are the precautions for filling and transporting LPG cylinders?
Matters needing attention in filling and transportation of liquefied petroleum gas cylinders are as follows: (1) When liquefied petroleum gas and air are mixed to a certain proportion, it will explode in case of open flame.
If it leaks indoors, it will explode in case of fire as long as the concentration reaches 2%. (2) The liquefied gas in the gas cylinder cannot be used up, and there should be no less than 0.5% ~ 1.0% residual gas, which can prevent air from entering the gas cylinder and avoid explosion accidents.
(3) Liquefied gas is 1.5 times heavier than air, and it is easy to accumulate on the ground or in low-lying places. An open flame will cause a fire. Therefore, liquefied gas cylinders should be placed in a well-ventilated place, and there should be no open flames within a certain distance.
(4) Gas cylinder valves and pipe joints shall be airtight, and shall be checked frequently with fatty soapy water. If liquefied gas leaks indoors, be sure to open the doors and windows until the smell disappears.
After use, the residual liquid in the bottle is also a flammable material and cannot be dumped by itself. (5) When filling cylinders, a certain space must be reserved for the expansion of liquefied gas. Generally speaking, the fullness should not exceed 80% ~85% of the cylinder volume.
9. What should I pay attention to when filling cylinders with liquefied gas?
Steel cylinder (gāng píng) A steel cylinder for storing high-pressure oxygen, gas, liquefied petroleum gas, etc.
Safe storage and transportation of cylinders Gas cylinders are generally filled with permanent gas, liquefied gas or mixed gas. Gas cylinder management of gas cylinder filling units, gas cylinder inspection units and gas cylinder use sheets (including factories, laboratories, hospitals, schools, disease control centers, electronic rooms, clean rooms, industrial institutions, etc.). ), bottled gas and cylinder distribution units need to be improved urgently, and the safety management of cylinder transportation and storage should be strengthened.
When filling a gas cylinder with liquefied gas, the following matters must be strictly observed: a. Before filling, the gas cylinder must be inspected and confirmed to be qualified or properly handled. B. When using snap connection instead of threaded connection for filling, it is necessary to carefully check and confirm that the thread at the outlet of bottle valve conforms to the thread type specified for filling gas. C slowly open the bottle valve, and pay attention to whether there is abnormal sound in the bottle. D when filling combustible gas, it is forbidden to knock the bottle valve or pipeline with metal instruments such as wrench. E. during the filling process. If any abnormality is found, it should be handled properly in time.