Click to follow Liaoning Fire 2024-04-23 Liaoning
At about 18:36 on August 5, 2023
Ganzhou Economic and Technological Development Zone, Jiangxi
A fire broke out in Jiangxi Zhongnan Environmental Protection Equipment Co., Ltd
The burned area is about 700 square meters
In the course of a firefighting battle
The retaining wall on the northeast side of the plant collapsed
As a result, 2 fire and rescue personnel died
Fifteen fire and rescue personnel were injured
The direct economic loss was more than 670 yuan
The parapet wall on the northeast side of the plant collapsed as a whole
Recently, the Jiangxi Provincial Emergency Management Department announced the "Ganzhou Economic Development Zone Jiangxi Zhongnan Environmental Protection Equipment Co., Ltd. "8.5" General Fire Accident Investigation Report.
After investigation, it was determined that the "8.5" general fire accident of Jiangxi Zhongnan Environmental Protection Equipment Co., Ltd. in Ganzhou Economic and Technological Development Zone was a production safety liability accident caused by serious violations of laws and regulations by relevant enterprises, non-implementation of main responsibilities, and failure of local governments and their relevant departments and units to perform their duties.
Basic circumstances of the accident
The property right unit of the plant that caught fire is Jiangxi Sumitomo Fuji Elevator Co., Ltd. (hereinafter referred to as Sumitomo Elevator Company). The plant is a three-span portal steel frame light house steel structure, single-storey (partial 2-storey).
After the completion of the plant, Jiangxi Zhongnan Environmental Protection Equipment Co., Ltd. (hereinafter referred to as Zhongnan Environmental Protection Company) rented 1# and 2# workshops. Later, Zhongnan Environmental Protection Company put forward requirements for plant heightening to Sumitomo Elevator Company according to production needs, and Jiangxi Changding Construction Engineering Co., Ltd. was responsible for the construction.
Workshop distribution map of the factory where the fire started
In July 2023, Hu Mouqi, the legal representative of Changding Engineering Company, handed over the heightening renovation project to his cousin Long Mousheng, and then Long Mousheng found Xiong Mouhua to convene personnel for renovation construction.
How the accident happened
A fire broke out
At about 15 o'clock on August 5, 2023, according to the construction arrangement of the "Plant Renovation Project", Xiong Mouhua, the construction team leader, led 10 construction personnel such as Zhang and Li Mouping, divided into 4 groups to work in different locations in the 2# workshop. Among them, Zhang and Li Mouping carried out gas cutting and installed overhead crane track operations at the G-axis position in the factory.
From 16:46 to 16:53, Zhang used an air cutting gun to cut screws and angle irons on the G-14 steel pillar, and adjusted the size of the bolt hole.
At about 18:36, Xiong Mouhua, who was checking the construction situation in the workshop, found that the PPR tank (tank height of about 4 meters) was on fire in the PPR tank (about 4 meters high) located under the north side of the second column (G axis) in the northeast to southwest direction and the 14th (G-14) steel column in the northwest to southeast direction of the plant.
The process of starting a fire
The fire was first extinguished
At about 18:36, Xiong Mouhua immediately shouted for help after discovering the fire. The on-site construction personnel tried to extinguish the fire, and first used the hobby lifting platform to carry people to extinguish the fire, but due to the deep tank tank, the fire extinguisher could not be sprayed to the root of the flame, and the fire extinguishing was ineffective and the fire gradually increased.
At about 18:39, the employees of Zhongnan Environmental Protection Company operated an overhead crane to try to transfer the PPR tank around the fire site, but failed due to the large fire.
At about 18:41, the employees of Zhongnan Environmental Protection Company connected the portable fire hose in the workshop and handed it over to the fire extinguishing personnel on the lifting platform of the curved arm truck to extinguish the fire, but due to the insufficient water output of the portable fire hose, the fire extinguishing was still ineffective.
At 18:42, employees of Zhongnan Environmental Protection Company used their mobile phones to call 119 to call the police.
At about 18:49, due to the ineffective fire extinguishing at the scene, the fire was out of control, and the on-site personnel were evacuated one after another.
Fire fighting and rescue
At 18:42, the command center of the Ganzhou Fire and Rescue Detachment (hereinafter referred to as the detachment) received an alarm and successively dispatched 4 brigades, 5 fire stations, 4 government full-time fire brigades, 23 fire trucks, and 95 fire rescue personnel to the scene for disposal, and the detachment's full-service command headquarters was dispatched.
From 18:49 to 19:02, the forces of each team arrived at the scene one after another to extinguish the fire.
At 19:12, the exterior wall on the northeast side of the plant collapsed outward in an instant (the length of the collapse was about 175 meters), and the on-site safety officer immediately issued an emergency evacuation order, but due to the collapse without warning, 17 fire rescue personnel could not avoid danger and were injured or buried by the collapsed wall. The brigade quickly set up 3 search and rescue teams to carry out rescue, and 5 vehicles and 20 people from the Hongqi Avenue Fire and Rescue Station and the Special Service Station who arrived one after another immediately joined the search and rescue operation. As of 19:28, 16 injured people were rescued and sent to the hospital for treatment (one of them died after resuscitation).
At 19:30, there was still one full-time government firefighter who was buried, and the detachment's full-service command arrived at the scene and re-established two search and rescue teams to carry out search and rescue under the cover of water cannons.
At 19:43, one full-time government firefighter who was buried was rescued, and later died after rescue efforts failed.
At 23:50, the fire was completely extinguished after the fire rescue personnel made every effort to extinguish it.
The fire engine was badly damaged
Why did hot work cause the wall to collapse?
(1) Causes of fire
In the process of heightening and renovating the steel structure of the 2# workshop (G-D axis of the plant) leased by Zhongnan Environmental Protection Company, the gas cutting operators carried out illegal thermal cutting operations in the area above the fire point without a license, and the high-temperature metal slag splashed and fell ignited the PPR tank and other combustibles placed in the 1# workshop (G-K axis of the plant) immediately below the working face, causing a fire.
(2) Analysis of the causes of wall collapse
Through the on-site inspection, testing and identification of the collapsed wall and expert demonstration, it is comprehensively determined that the factors that cause the overall collapse of the outer retaining wall of the plant are mainly internal causes and inducements.
1. There are congenital defects in the engineering quality of the outer retaining wall of the plant, and there are serious safety hazards. The main performance is as follows: first, the structural columns, ring beams and parapets of the perimeter retaining wall are not effectively connected with the main steel frame; second, the height-thickness ratio of the perimeter retaining wall and the typical column spacing of the structural column do not meet the requirements of the specification; third, the concrete compressive strength of the foundation beam of the perimeter retaining wall, and the lap anchorage of the steel reinforcement of the structural column and the window lintel do not meet the requirements of the specification. As a result, the out-of-plane stable bearing capacity of the periphery retaining wall itself is much lower than the gravity load, and it cannot be kept stable, which is the internal factor that causes the overall overturning and collapse of the wall.
2. There are no fire protection measures for the main steel structure of the plant, which fails to delay the heating process of the steel structure. After testing and identification, there is no fire protection coating on the surface of the main steel structure of the plant, which does not meet the design requirements, resulting in the rapid thermal expansion of the steel frame under the fire state, and the outward tilt of the wall caused by the uneven heating of the inner and outer sides of the outer wall, the use of the steel structure beyond the design conditions and the technical transformation, etc., are important inducing factors for the overall overturning and collapse of the wall.
The main issues exposed by the enterprise
(1) Jiangxi Zhongnan Environmental Protection Equipment Co., Ltd
As the lessee of the burning plant and the controlling shareholder of Sumitomo Elevator Company, first, the safety awareness was weak, and the production of PPR tanks was engaged in the production of PPR tanks in the Class E plant, and the fire safety conditions required by the production process were not re-approved and the fire-fighting facilities were upgraded; , illegal production in the new production plant without obtaining an industrial product production license.
(2) Jiangxi Sumitomo Fuji Elevator Co., Ltd
As a fire plant construction (property rights) unit, the first is not to conscientiously fulfill the primary responsibility of the construction unit for the quality of the project, and entrust the project supervision task to the Zhengdong supervision company that has an equity relationship with the construction unit, resulting in the on-site construction supervision workflow in the form, and arranging personnel without relevant qualifications to participate in the on-site management of the design, construction and supervision units. The second is to change the use of the plant at will, lease the Class E plant to the unit of Class C production process to engage in production operations, and do not sign a safety management agreement with the three tenants, fail to coordinate and manage the safety production and fire protection work, and fail to conduct regular safety inspections. Supervise and rectify hidden dangers, especially in the case of knowing that there are cracks in the outer walls of the plant, not to deal with them, and let the risks and hidden dangers exist for a long time; This eventually led to a fire and a collapse of the wall.
(3) Jiangxi Changding Construction Engineering Co., Ltd
As the construction unit of the plant heightening and renovation project of Sumitomo Elevator Company, the main responsibility for production safety was not implemented, the safety production management organization was not established, the safety production responsibility system and safety production rules and regulations for all employees were not established and improved, and the safety production education and training and assessment were not organized, and the safety management was seriously lacking; the plant heightening and renovation project did not prepare the construction organization design, did not arrange full-time safety management personnel, did not establish a fire safety responsibility system, did not formulate an emergency plan, and did not organize targeted fire drills; in violation of regulations, Long Mousheng, who had not obtained the qualification certificate of the constructor, was arranged to be the person in charge of the project, and Zhang Mousheng, who had not obtained the qualification certificate for special operations, was hired, Li Mouping and 6 personnel carried out electrical welding fire operations, and did not clean up the combustibles at the operation site, resulting in a fire accident.
Five people were criminally detained
1. Ling Moufeng, male, the legal representative of Sumitomo Elevator Company, did not implement the main responsibility for production safety, and was directly responsible for the accident. He was criminally detained on August 6, 2023 on suspicion of the crime of major liability accidents.
2. Huang Mouzhong, male, the legal representative of Zhongnan Environmental Protection Company, does not implement the main responsibility for production safety, and is directly responsible for the accident. He was criminally detained on August 6, 2023 on suspicion of the crime of major liability accidents.
3. Hu Mouqi, male, legal representative of Changding Engineering Company, the main responsibility for production safety is not implemented, and he is directly responsible for the accident. He was criminally detained on August 6, 2023 on suspicion of the crime of major liability accidents.
4. Zhang, male, a construction worker employed by Changding Engineering Company, carried out gas cutting operations before the accident and was directly responsible for the accident. He was criminally detained on August 6, 2023 on suspicion of the crime of major liability accidents.
5. Li Mouping, male, a construction worker employed by Changding Engineering Company, carried out gas cutting operations before the accident and was directly responsible for the accident. He was criminally detained on August 6, 2023 on suspicion of the crime of major liability accidents.
Hot work is a special operation
Metal sparks on the job site
It's going to splash everywhere
Careless operation can easily cause fire accidents
When working hotly
Be sure to keep away from combustibles and have a fire extinguisher
Prevent fires
Producer: Liaoning Provincial Fire and Rescue Corps All Media Center
Source: Ministry of Emergency Management