Cause of the accident: chaotic management, violations of regulations and rules, and employment without a certificate
The accident exposed prominent problems such as chaotic management of the accident enterprise, weak safety awareness, serious violations of regulations, etc. The main manifestations are:< /p>
First, it seriously violated the clear regulations of petroleum and petrochemical enterprises that "manual water cutting operations are not allowed to occur without people". No one was on-site to monitor the water in real time during the water cutting operation. When the liquefied gas leaked after the water was drained, the company failed to respond immediately. Discovery and Disposal.
Second, the company illegally closed the front and rear hand valves of the spherical tank safety valve and the root valve of the spherical tank in use in the tank area, and added a blind plate to the low-pressure liquefied gas exhaust torch main pipe.
Third, the operators did not obtain the operating qualification certificates for pressure vessels and pressure pipelines and worked without certificates.
Fourth, through the low-pressure liquefied gas pipeline at the top of the tank, the tank inversion operation is carried out by pouring water into the tank to pressurize it, and pouring water into the tank to relieve the pressure. There are great safety risks, and the company has no regulations for tank inversion. Operating procedures, no safe operation plan, and no risk identification.
Fifth, major hazard sources were not controlled in accordance with the regulations. The automated control facilities in the spherical tank area were imperfect and only had remote display functions and could not realize automated control; the emergency shut-off valve was modified due to the factory shutdown. It is manual and the safety function is lost; a video surveillance system is not set up, and control measures for major hazard sources are seriously lacking.
Sixth, safety training is not in place and the professional quality of management personnel is low. The operators have just been transferred from the loading and unloading station area to work in the spherical tank area. They have not received transfer training and have insufficient job skills.
The accident also exposed the lack of supervision of pressure vessels by local governments and the failure to implement the regulatory requirements for "two key points and one major" (key supervised hazardous chemical processes, key supervised hazardous chemicals and major hazard sources of hazardous chemicals) , problems such as insufficient supervision of hazardous chemical storage tank areas of chemical enterprises after production suspension.
Lessons learned from the accident: drastic measures to strengthen supervision of storage tank areas
In response to the problems exposed by this accident, the State Council Safety Commission requested in the notification to take drastic measures to immediately carry out hazardous chemical inspections Conduct special safety inspections in chemical storage tank areas and effectively strengthen safety supervision in hazardous chemical storage tank areas. Requirements:
First, find out the bottom number of the tank area and establish a data ledger. The second is to increase the frequency of inspections as required inspection items. All discontinued enterprises with hazardous chemicals in storage tank areas shall be supervised in accordance with the requirements of the production enterprise. The third is to conduct safety assessment and understand the safety status. The fourth is to intensify investigation and punishment efforts.
In the future, all fire and explosion accidents in hazardous chemical tank farms will be investigated by the government. Accidents with a large social impact will be investigated by the people's government at or above the municipal level, and the production safety license will be temporarily withheld in accordance with the law. , the provincial safety supervision department shall re-confirm the safety production conditions, and whether the enterprise has the ability to manage safety production shall be regarded as a safety production condition; enterprises that violate laws and regulations shall be financially punished according to the prescribed upper limit in accordance with the law; if the circumstances are serious, the safety production shall be revoked in accordance with the law permit and requested the local people's government to close it.