after the accident, at 8:10 on December 19, 2014, sun mouyong, the chef of the food stall in the Food City, went to work and entered the kitchen, turned on the kitchen light and prepared 120 lunch boxes at noon.
At this time, there are three people in the kitchen, namely chef sun mouyong, second chef Liu mouliang and vegetable cutting chef Zhang Moulin.
Other people working inside and outside the kitchen also ran out after hearing the noise and shouting.
Accident introduction at about 9:10 on December 19, 2014, a gas leakage and explosion accident occurred in a food city at 156 Lingshui Road, DL high tech Zone, resulting in one death and 10 injuries, damage to some facilities, and a direct economic loss of about 2 million yuan.
Food city guarantees that the LPG station will exclusively supply fuel.
In the installation process, since the food city is designed to operate with ten stalls, one Chinese food stall is reserved and the other stalls are rented.
At about 9:00, chef sun mouyong and second chef Liu mouliang went to the bottle group again.
The maximum working pressure of the meters is 0.05Mpa, which are installed at 9 stalls respectively (one for standby and the other not installed temporarily because the stalls are not rented).
Both parties agreed that the gas consumption mode of the food city is bottle group to supply pipeline liquefied petroleum gas.
II.
At 9:13, the gas meter burst and the gas leaked rapidly.
Liu mouguo went to the food city (he didn’t arrive at the scene before the explosion).
1.
The pressure gauge on the manifold shows a pressure of 0.4MPa.
The main reason for the accident is the non-compliance of gas construction process and equipment selection.
The liquefied petroleum gas station provides energy-saving supporting products of gasifier and gas cylinders for the food city and is responsible for installation (the property right belongs to the liquefied petroleum gas station.
One of the chef and second chef should be using the gas stove.
After negotiation, funded by the Food City, the liquefied petroleum gas station contacted a thermal instrument factory to purchase 11 membrane gas meters (model j2.5c11).
Because the light source flickers indefinitely, it can be concluded that it is not the light, but the light reflected by the fire in the gas stove.
The main responsibility for safety production of LPG station is not implemented, and the gas cylinder and gasifier energy-saving supporting products are illegally installed and the gas pipeline is laid..
In case of breach of contract, the LPG station has the right to withdraw all machines, pipelines and steel cylinders.
1.
If Party B fails to notify Party A of quality problems and continues to use, all consequences will be caused.
At 8:30, the second chef Liu mouliang opened the cylinder valve between the gas cylinder groups after going to work.
All valves and power switches must be shut down immediately, and the service shall be stopped and notify Party A to maintain.
III.
Party B must assign special personnel to check and manage the air leakage of all gas supply systems and complete equipment of gas system and prohibit illegal operation.
Without the qualification for installation of LPG facilities, the LPG station illegally installed gasifier energy-saving supporting products, gas cylinders and laid gas pipelines for the gas project of food city.
When they just ran to a place two or three meters away from the kitchen door, the leaked gas exploded in case of an open fire, The window on the south side of the Food City Hall fell to the outdoor sidewalk due to the impact of the air flow generated after the explosion, hitting an old man (68 years old) who just came out of the supermarket on the first floor, resulting in his death on the spot; Another 10 people were injured.
The contract specifies that Party B (a delicacy city) must assign special personnel to test and inspect the foam water regularly and find that all the quality problems of the products (LPG) are found.
In case of any consequence of illegal operation, Party B shall bear the responsibility.
Party A shall not bear any responsibility.
When he found that the gas pipeline between the gas cylinder groups leaked, he immediately closed the valve and informed chef sun mouyong.
Jin immediately informed Liu mouguo of the liquefied petroleum gas station and asked for immediate maintenance.
The gas pipeline after leaving the station is laid outdoors, directly to the food city on the third floor, through the wall and into the kitchen at the North stall.
There are 6 LPG cylinders in the cylinder group room, of which 2 are connected with the confluence pipe through rubber hose.
After entering the kitchen, the pipeline is connected with a gasifier (the pressure gauge on the outlet pipeline of the gasifier has been damaged, the pressure indication is 0.2MPa, after explosion).
management problems (I) LPG stations LPG stations ignore national laws and illegally organize the construction of gas pipe network in food city without gas facility installation qualification.
Chef sun mouyong was the first to find it and ran out.
At 9:10, he entered the kitchen successively.
The cylinder group room is located under the steel fire ladder on the north side outside the whole building.
The chef should face the stove and look up near the door to see the gas meter.
After the installation of gas facilities, both parties signed a contract on August 29, 2014.
The gas pipeline from the gasifier is divided into three branches, one goes out of the kitchen to other stalls to the south, and the other two go west into two membrane box gas meters installed side by side.
Author Peng Zhijun Author: Peng Zhijun (adapted and deleted) former gas practitioner, who has been engaged in urban gas related work for 17 years.
Gas facilities a food city negotiated and signed a contract with a liquefied petroleum gas station.
After sun mouyong came down from the kitchen to check, he informed the landlady Jin.
IV.
V.
On August 27, 2014, the LPG station arranged Liu mouguo and others to install gas facilities.
The flashing light will be reflected on the ceramic tiles in the kitchen door at an interval of time.
direct cause: due to the non-compliance of LPG pipeline construction process and equipment selection, the long-term overpressure operation of the membrane gas meter finally led to the bursting of the gas meter in the kitchen at the Chinese food stall on the north side, the rapid and large leakage of LPG under the pressure of 0.2MPa, the mixture of leaked LPG and air reached the explosion range, and the explosion occurred in case of open fire.
After the facilities are put into use, the liquefied petroleum gas station is responsible for daily maintenance and inspection).
After being depressurized by gasifier and spring-loaded pressure reducing valve, it leaves the station, and the pressure displayed by the pressure reducing valve is 0.2MPa.
In this way, each stall needs to be installed with a gas meter, and the gas consumption is calculated separately.
