Gas is widely used in homes, restaurants, and other places
At the same time, it brings convenience to our lives
It also comes with safety hazards
If gas is used improperly
Leaks can occur
Cause a fire or even an explosion
Gas is a general term for gaseous fuels, and according to the "Town Gas Design Code", town gas generally includes natural gas, liquefied petroleum gas and artificial gas. If the gas is used in the process, once the operation is not careful, it is easy to cause gas leakage, and even cause fire and explosion accidents.
Common causes of gas leaks
Improper valve management
In daily life, due to improper valve management, such as valve not closed, not closed, loose, leakage, etc., resulting in gas explosion accidents or the expansion of the incident story, it often occurs. It is embodied in the fact that some residents do not close the stove switch and the gas valve in front of the stove in time after each use (the gas valve in front of the stove is at the connection between the pipe behind the meter and the user's hose); In order to save money, some residents use gas cookers beyond the time limit, resulting in loose valves and gas leakage.
Aging of gas hoses
Some residential users ignore the safety of the hose connected to the stove, and there are still problems such as overdue use of gas hoses, aging and cracking of hoses, bitten by rats, unfixed or insecure connections between hoses and gas appliances, and loose hoses falling off when moving stoves. These problems pose a serious threat to the safe use of indoor gas.
Improper use of the operation
Improper operation mainly refers to the failure of gas users and maintenance personnel to operate and operate in accordance with relevant specifications during use, resulting in explosion accidents. The specific manifestations are wrong operation methods, unauthorized modification of gas pipelines or use of gas facilities, and failure to pay attention to the ventilation of the kitchen. In addition, some users tilt the LPG tank or use hot water to soak it in order to save money. As everyone knows, any improper operation will cause gas accidents and cause serious consequences.
Gas pipes are damaged
There are many pipeline equipment and facilities for city gas, and the amount of underground concealed engineering is large, and any unsafe factor in any link may cause gas explosion accidents. Due to its long service life, buried pipelines cannot be dug out frequently for testing, and cannot be detected in time when they are damaged by corrosion and external forces, which can easily cause a large amount of gas leakage. At the same time, with the development of the urban economy, the location of the local pipelines in the gas pipeline network has changed, the road has been widened, and the gas pipeline is placed under the lane, which is very easy to cause the pipeline to be damaged under pressure and cause gas leakage; Problems with the connection of some underground pipeline ancillary facilities such as valves and flanges can also lead to gas leakage, which can lead to explosion accidents.
Gas Safety Precautions
For residents
Do the following:
1. Purchase and select qualified gas stoves, hoses, gas cylinders, pressure regulating valves, etc., and use stoves with flame-out protection functions.
2. Do not alter or modify gas pipelines, stoves and other facilities without authorization, replace gas cylinders to be firmly connected to pipelines, and check whether there is gas leakage.
3. Do not wrap gas meters, water heaters and other gas facilities and ancillary pipelines, and do not bundle or hang items on gas facilities, so as not to affect the sealing effect.
4. Doors and windows should be opened to keep ventilation in rooms that use gas, and someone should take care of them when cooking and boiling water to avoid gas leakage caused by flames extinguishing caused by boiling soup.
5. After using the gas, the valve of the gas cylinder, the connecting valve of the pipe and the hose and the switch of the stove should be closed.
6. The kitchen gas hose should be checked frequently for aging and loosening, and professionals should be contacted for maintenance and replacement in time if abnormalities are found.
7. When gas leakage is found, the gas source should be quickly turned off, doors and windows should be opened for ventilation, the electrical switch should not be touched, and the open flame such as a lighter should not be used for gas leakage inspection.
8. It is recommended to install automatic gas alarm and automatic shut-off devices to detect and deal with gas leakage accidents in a timely manner.
9. In case of any gas safety accident, you should quickly stay away from the dangerous location, contact the gas company and the property, and call the police for help in time by dialing "119".
For foodservice units
The following provisions shall be observed
1. The catering service business unit is the main body responsible for the safety of gas use in catering establishments, and it is necessary to fully implement the responsibility for the safety management of gas use. Establish a safety production responsibility system and operating procedures to ensure that employees can work after passing safety training.
2. Gas testing equipment shall be equipped, gas safety inspections shall be carried out regularly, and targeted emergency plans or emergency disposal plans shall be formulated to ensure that practitioners and rescue personnel have relevant emergency knowledge.
3. Combustible gas concentration detection and alarm devices shall be installed in gas use sites and gas storage places in accordance with regulations, equipped with dry powder fire extinguishers and other fire-fighting equipment, use explosion-proof lighting and other electrical equipment, and set up electrical switches outdoors in the premises.
4. It is strictly forbidden to purchase liquefied petroleum gas from units or individuals without gas business qualifications.
5. LPG shall not be stored or used in high-rise buildings, basements, semi-basements and poorly ventilated places, and LPG cylinders shall not be stored and used in dining areas or gas to directly heat food.
6. Gas phase cylinders and gas-liquid two-phase cylinders are used for special bottles, and the cylinders, spare cylinders and empty cylinders in use should be placed separately or separated by firewalls.
7. The liquefied petroleum gas cylinder group and the gas burning appliances shall not be arranged in the same room, and flammable and explosive materials, corrosive materials and open flames shall not be stacked in the room where the cylinders are placed and the gas is used.
8. When the total weight of the storage cylinders exceeds 100 kg (equivalent to 2 bottles of 50 kg or more than 7 bottles of 15 kg cylinders), a special cylinder room shall be set up; When the total weight of the cylinders is greater than 420 kg, the cylinder room shall be set up in an independent building, and the distance from other civil buildings shall not be less than 10 meters; The height between the gas cylinders shall not be less than 2.2 meters, and there shall be no heating ditches, floor drains and other underground structures.