Recently, the news of "a woman cooking in Zhuji, Zhejiang province, the first time to protect the child after a gas explosion" has been trending on social media.
Recently, the news of "a woman cooking in Zhuji, Zhejiang province, the first time to protect the child after a gas explosion" has been trending on social media. The woman suffered burns to more than 60 percent of her body in the heart-wrenching incident, which may have been caused by a loose hose.
The "National Gas Accident Analysis Report (2024 · First half report)" pointed out that the number of gas accidents in the country (excluding Hong Kong, Macao and Taiwan) totaled 181, which was divided according to the type of gas source: 85 natural gas accidents (including 21 residential user accidents) and 96 liquefied petroleum gas accidents (including 95 residential user accidents). In the first half of the year, there were 23 accidents caused by hose problems (hose falling off, aging damage and animal biting), which increased significantly compared with 13 in the first half of 2023, and was the main cause of user accidents. Among them, 4 cases of natural gas and 19 cases of liquefied petroleum gas.
In daily life, how should we deal with the problem of fuel hose safety?
Selection and use of fuel hose
Fuel hose should be selected in line with the current national standards of metal connection hose. Common special fuel hose connection are metal coated hose, stainless steel corrugated hose, etc. These two kinds of hoses are more resistant to high temperature, corrosion resistance, rat bite than rubber composite hose material, the overall more safe and durable. Among them, the rubber hose that is lower than the waste life of the fuel has been banned by the state.
Article 6.1.8 of GB 55009-2021 "Gas Engineering Project Code" : "The hose connecting to the fuel appliance shall not cross the wall, doors and Windows, ceiling and ground, the length shall not be greater than 2 meters and there shall be no joint."
Safety requirements: The length of the connection between the hose and the gas equipment should not exceed 2 meters.
Safety risk: the connection hose is too long, which may cause pulling, dragging, and extrusion during use, resulting in the hose connection part falling or loosening, resulting in gas leakage. Similarly, if the connection hose is too short, it is easy to strain and pull, resulting in the hose falling off, resulting in safety hazards.
Article 7.1 of DB11/T 1275-2020 "Technical Regulations for Hose Application for fuel appliance Connection" : "In addition to meeting the relevant provisions of regular indoor inspection, the following requirements should be met: The hose should not have aging, cracking, damage and other phenomena."
Safety risks: If the rubber hose is used for too long, it may harden, stick, crack, and become brittle, leading to damage and air leakage of the hose.
Article 6.1.8 of GB 55009-2021 "Gas Engineering Project Code" : "The hose connecting to the fuel appliance shall not pass through the wall, doors and Windows, ceiling and ground, the length shall not be greater than 2.0m and there shall be no joint."
DB11/T 1275-2020 Technical Specification for the Application of hoses for the connection of fuel appliances Article 5.5.1: "The installation of hoses shall comply with the following provisions: Hoses shall not pass through walls, floors, ceilings, doors and Windows, and shall not be concealed underground or in walls."
Safety requirements: The hose connecting to the fuel appliance should not pass through walls, floors, ceilings, doors and Windows.
Safety risk: Because the connecting hose can not be stressed, the hose passing through the wall, floor and other places is easy to be damaged due to friction, resulting in air leakage, and it will also bring great security risks to the home because of wall settlement and other conditions.
Article 3.24 of CJJ 94-2009 Urban gas indoor Engineering construction and quality acceptance Code: "The hose connection between the fuel pipe and the fuel shall comply with the provisions of the design document, and shall meet the following requirements: the hose shall be more than 30mm lower than the stove panel."
Safety requirements: the hose connecting the stove should be more than 30mm lower than the stove panel.
Safety risk: If the connected hose is close to the fire source such as the gas stove, it may be roasted by the flame and accelerate aging, affecting the service life of the connected hose, causing gas leakage, and even causing a fire.
How to safely connect a hose using a fuel appliance
Conduct regular self-examinations
Check regularly for air leaks
Use soapy water or detergent water to apply to the connection of the hose and pipe fittings, the connection of the stove and the hose; If there are bubbles in the hose, and gradually grow, there may be a gas leak. If you smell a pungent odor, there may also be a gas leak. Please close the valve in front of the meter, go outside and call the customer service hotline of the gas company for repair. Remember not to use open flame inspection.Observe whether the connecting hose has obvious discoloration or corrosion phenomenon, and check whether the connecting hose has hardened. Check whether the connection between the hose and the connector is firm, and whether there is loosening or falling off.
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