Diners will have a higher safety factor when eating in newly opened restaurants and canteens, because gas leakage alarms will be installed in these places, and no gas will be supplied if they fail to pass this "safety barrier".
The "Regulations on the Installation of Gas Leakage Safety Protection Devices in Various Gas Utilization Units" drafted by relevant departments intends to require that all gas production and operation units and public service users such as restaurants, construction sites, hospitals, schools and unit canteens must install combustible gas alarms. device, so today I will explain to you how to install the combustible gas alarm in the hotel kitchen and school canteen:
Installation location of combustible gas alarm: within a radius of 1.5 meters from the gas source, in a well-ventilated place.
(1) Liquefied petroleum gas (composition of liquefied petroleum gas: more: "propane, butane". Less: "ethylene, propylene, ethylene butene", etc.) is denser than air, and stays at a low place after leakage, The alarm should be installed about 0.5 meters above the ground.
(2) The density of liquefied natural gas or gas is smaller than that of air, and it stays at a high place after leakage. The alarm should be installed about 0.5 meters away from the ceiling.
Locations where alarms cannot be installed：
Locations where the alarm cannot be installed: corners, cabinets, and other locations where the air is not easy to circulate; locations that are easy to be directly smoked by oily smoke. The flammable gas leakage alarm is suitable for places where various flammable gas (liquefied gas) leaks and there are two types: portable and fixed.
Note: After one year of use, the alarm should be returned to the manufacturer or calibrated at the local metrology institute, because the sensitivity of the built-in sensor will decrease after one year, and the detection error will be large.
While gas brings convenience to citizens and enterprises, it also hides huge risks. In recent years, there have been many gas leakage and deflagration accidents in catering enterprises across the country, causing casualties and property losses.
The main component of liquefied petroleum gas is propane or butane. When the concentration in the air reaches 1.5% to 9.5% after leakage, it will deflagrate when encountering an open flame. The safety equipment required by the municipal safety supervision department in each region includes gas concentration alarms, explosion-proof fans and shut-off valves. Enterprises can choose to purchase freely according to their own conditions. But it must be installed in place.
After installing the safety system, when the gas leakage concentration reaches 25% of the lower limit of deflagration, the explosion-proof fan will be automatically activated for forced ventilation and the restaurant manager will be notified by SMS; when the leakage concentration reaches 50% of the lower limit of deflagration, the shut-off valve will stop the gas supply and notify the gas supply enterprise.