in everyday life
There are quite a few households that use bottled liquefied gas
However, high-rise civil buildings cannot use this requirement
It's very easy to be overlooked
Why is bottled liquefied gas banned in high-rise buildings?
1. The danger of liquefied gas
Bottled liquefied gas is a combustible gas that is easy to burn and explode, and its lower explosion limit is about 2% or less, and the specific gravity is 1.5~2 times that of air, and the fire hazard is large. It is usually stored in a pressurized container in liquid form, and when the container, pipeline, valve and other equipment is damaged and leaks, it will be quickly vaporized, and it will burn and explode in case of open flame.
2. High-rise buildings are inconvenient to transport
If the elevator is used to transport gas cylinders, once the liquefied gas leaks into the elevator, it is more likely to cause serious explosion accidents in an environment with poor air circulation.
3. It is difficult to fight fires in high-rise buildings
High-rise fires have a "chimney effect" and are prone to strong convection. After a fire, the smoke spreads vertically at a speed of 3-4 m/s through stairwells, pipe shafts, glass curtain wall gaps, etc., and the entire building can be quickly ignited.
At the same time, high-rise buildings are huge, functional, densely populated, and have many sources of danger. In the event of a fire, it is difficult to evacuate personnel and fight fires, which can easily cause serious casualties.
There is a law to prohibit the use of bottled liquefied gas in high-rise buildings!
Code for Fire Protection Design of Buildings GB50016-2014 5.4.16 When combustible gas fuel is used in high-rise civil buildings, pipeline gas supply shall be used. The room or part where combustible gas is used should be set up against the exterior wall, and should comply with the provisions of the current national standard "Code for Design of Urban Gas" GB50028.
Code for Fire Protection Design of Buildings - Explanation of Provisions 5.4.16 In view of the large fire danger of combustible gas and the inconvenience of transportation of high-rise buildings, it will also lead to an increase in risk factors during transportation, such as the use of elevators to transport gas cylinders, once the combustible gas leaks into the elevator shaft, it is easy to explode and other accidents, so it is required that the parts of high-rise civil buildings that use combustible gas as fuel should use pipeline centralized gas supply.
Code for Residential Buildings GB50368-2012 8.4.5 It is strictly forbidden to set up liquefied petroleum gas equipment, pipelines and gas cylinders in the basement and semi-basement of the residence. Bottled liquefied gas is not allowed to be used in residential buildings with 10 floors or more.
Let's popularize science
High-rise buildings refer to residential buildings with a building height greater than 27m and non-single-storey factories, warehouses and other civil buildings with a building height greater than 24m. The podium of a high-rise civil building refers to an ancillary building with a building height of no more than 24m connected to a high-rise building.
Bottled liquefied gas
It is a high-quality and efficient clean energy
It has brought a lot of convenience to our lives
It meets the daily cooking and heat needs
But if used improperly
Extremely prone to explosion hazards
Related Cases
At about 8 o'clock in the evening of January 2, a building explosion and collapse accident occurred in the dormitory area of a panel furniture factory on Yaru Road, Liuzhou City, Guangxi Province, caused by the improper use of bottled liquefied petroleum gas by residents, resulting in one death and one minor injury.
Related Cases
On the evening of May 24, 2022, an explosion occurred in a residential building in Changzhou, Jiangsu Province, where six people were trapped. The accident caused 1 death and 5 injuries, and after preliminary investigation, it was found that the improper operation of the party using bottled liquefied gas caused the leakage and caused the explosion.
Liquefied gas is used as a type of living energy
It is widely used in homes, restaurants, and other places
Liquefied gas tanks are flammable and explosive
In case of open flame and improper operation, it will cause an explosion
It poses a threat to people's lives
Temperatures rise in summer
Liquefied gas tank explosion accidents are prone to occur frequently
How to use liquefied gas tanks safely
Let's learn together
Precautions for the use of bottled liquefied gas
(Source: Beijing Fire Department)