At about 8:40 pm on June 21, a gas explosion occurred in a barbecue restaurant in Yinchuan. It was the midnight snack time. The barbecue restaurant was full and diners queued up outside the store. The accident eventually resulted in the deaths of 31 people and 7 people. Tragedy of injuries.
According to the caller (an employee of the barbecue restaurant), the smell of gas was smelled about an hour before the explosion. The store did not carry out any emergency response. Instead, it ordered employees to go out and buy valves. During the process of replacing new valves, an explosion occurred.
So far, the public security department has legally controlled and frozen the assets of 9 people involved in the Yinchuan barbecue restaurant explosion, including the manager, shareholders and staff of the barbecue restaurant. Four of them have been detained. The State Council has established a Yinchuan barbecue restaurant explosion investigation team.
After the accident, Yinchuan and a large number of other provinces and cities across the country, including Hainan, Fujian, Jiangsu, and Yunnan, began special inspections and rectifications of gas hazards, and restaurants became a key inspection area.
Is it really unavoidable?
Take this accident as an example. When a liquefied gas leak occurred, the store staff noticed it and instead of taking correct emergency measures, they even used an extremely crude method – directly “changing the valve”, which led to the tragedy.
You should know that liquefied gas is a kind of flammable and explosive goods with high density. The main components are propane, butane and butene. The gas is highly flammable. Although it is non-toxic, after leakage, it will form a concentration in the air. It will cause suffocation and death; the concentration in the air reaches 1.5%-9.5%, and it will cause explosion when encountering heat source, fire source and electromagnetic wave.
After discovering a gas leak, the manager of this restaurant carried out repairs without authorization by thinking of repairing furniture or general electrical appliances. This is a very dangerous behavior and lacks safety common sense.
The correct disposal method is to stop operations as soon as possible, immediately cover the gas tank outlet with a wet towel, quickly take the gas tank to an empty place (or open the windows for ventilation), and organize the evacuation of personnel. During this period, avoid light sources, do not turn on any live equipment, and do not burn any sources of ignition. Finally, be sure to stay away from the scene and call 119 for help.
The frequent occurrence and expansion of gas accidents this year have seriously endangered people’s safety and social stability. They also reflect the urgent need to use intelligent means to help catering units with fire safety.
How to prevent flammable gas leaks?
In response to the needs of gas leakage monitoring and gas working environment management in the catering industry, modern scientific and technological means such as the Internet of Things and big data are used to establish a global, real-time gas monitoring and alarm management mechanism to conduct 24-hour online uninterrupted monitoring of various catering enterprises and industrial and commercial users. Supervision, promptly discover risks, control risks, resolve risks, and avoid gas explosion accidents.
The gas safety supervision system mainly consists of edge computing gateways, combustible gas detectors, audible and visual alarms, emergency shut-off valves, explosion-proof fans and other equipment and other installation accessories.
Combustible gas detectors are installed above gas release sources or prone leak points to detect gas leaks promptly and accurately. The passerelle informatique périphérique collects combustible gas detector data in real time and uploads it to the cloud supervision center through wireless/wired networks.
When it is detected that the concentration of gas leakage reaches the warning value, the edge computing gateway automatically sends a control signal to the audible and visual alarm, emergency shut-off valve and explosion-proof fan, cuts off the gas source and exhausts the gas, and also issues an alarm to prompt the staff to take measures.
Then the edge computing gateway will transmit the early warning information to the cloud supervision center. Managers can receive timely danger warning messages from the supervision center. At the same time, they can also jointly prevent and control other relevant departments to mobilize in time to nip safety incidents in the cradle. inside!