In order to deeply learn the lessons of the major safety accidents that have occurred in the summer hazardous chemical storage sites in recent years,Deployed in accordance with the Office Meeting of the Minister of Emergency Management,The Ministry of Emergency Management organized six supervision groups to visit Tianjin from August 5 to 11, 2018、Liaoning、Jiangsu、chekiang、Shandong、The safety of hazardous chemical storage sites of 40 hazardous chemical production and operation enterprises in 6 provinces (municipalities) including Guangdong has been inspected,A total of 223 major accident hazards and problems were found,Among them, there are 22 major accident hazards。It is mainly manifested in the following aspects: First, the storage of hazardous chemicals is not standardized,Excess、Super-breed storage。Nanjing United Total Logistics Co., Ltd. does not have the qualification to distribute highly toxic chemicals, but stores highly toxic substances,Operate hazardous chemicals beyond the scope of business license。The paint and epoxy diluent in the warehouse of Zhoushan Outer Shipping Supply Co., Ltd. were stored too tightly,Shielding firefighting facilities,No safety and fire escapes are reserved,And the design reserve of the warehouse storage epoxy diluent is exceeded。In the warehouse of Rizhao Kumho Jinma Chemical Co., Ltd., Class A flammable liquid and strong oxide are mixed。 Second, the automatic control system is not installed for major hazards、Safety instrumented systems。The liquid level of the storage tank of Guangdong (Panyu) Petrochemical Storage and Transportation Development Co., Ltd、temperature、Parameters such as pressure are controlled by PLC,Cannot be displayed on the control room screen。Nanjing Qingjiang Petrochemical Distribution Co., Ltd. T-211 tank material is diesel,However, it is set up as a toxic gas alarm。Tianjin Dongxu Logistics Co., Ltd. has constituted a major source of danger for hazardous chemicals,However, there are no major hazard assessments。Changchun Chemical (Panjin) Co., Ltd. belongs to one、The inlet and outlet valves of the isopropanol storage tank of the secondary major hazard source are not equipped with an emergency shut-off valve。 Third, the safety management system for special operations such as fire is not implemented。A special fire ticket issued by CNOOC Zhoushan Petrochemical Co., Ltd. on July 11, 2018,The job time is earlier than the issuance time。Wanhua Ningbo Chemical Group Co., Ltd. has not implemented physical separation measures between the production area and the construction area specified in the construction plan,While producing, a new production plant was built next to the old one,There are many construction personnel,Hot、hoisting、A variety of special operations such as groundbreaking are carried out at the same time,Failure to go through the procedures for special operation permits in accordance with regulations。Qingdao Aobo Haihao Gas Co., Ltd. "Fire Safety Operation Certificate" level is "Level 3 Fire",It does not meet the requirements of national standards。 Fourth, the operation and management of oil and gas storage tank farms violated the "Ten Regulations on Fire Prevention and Explosion Prevention in Oil and Gas Tank Farms" (Safety Supervision General Political Law (2017) No. 15)。The alarm value of the low and low liquid level of the storage tank of Guangzhou Development Bibi Oil Products Co., Ltd. is set lower than the height of the floating plate,There is a risk that the floating disk will fall to the bottom。Nanjing Qingjiang Petrochemical Distribution Co., Ltd. has a number of oil tank floating plates in the bottom state in operation。Guangzhou Zhongguan Antai Petrochemical Co., Ltd. 1# storage tank floating plate is running at the bottom。 Main accident hazards and problems Tianjin (1) Dongxu Logistics Co., Ltd. 1. There are problems in the safety assessment report,Some substances are incorrectly classified as fire hazards,against organic peroxides and organic matter、The dangers of co-storage of flammable liquids have not been effectively analysed and identified,No rectification recommendations were made for the co-storage of organic peroxides and flammable liquids。 2.armor、The door of the Class B warehouse is not equipotential grounded,There is no sound and light alarm function on site of combustible gas alarm。 3.The simple eyewash does not meet the on-site emergency requirements,There is no fixed eyewash with shower function。 4.There are no anti-liquid dispersion measures at the entrance of Class A warehouses,Fixed doors are provided for explosion-proof walls in fireproof partitions,Plugging has not been implemented and the fire resistance limit is not less than 4 hours。 (2) Tianjin Huanjie Logistics Co., Ltd. 1. Lack of safety supervision in the operation process,Lack of control procedures or management systems for safety supervision of the operation process,There are no guardians for special operations that are more dangerous。 2.armor、The door of the Class B warehouse is not equipotential grounded,Safety warning signs are posted on the doors,There is only one grounding point for the shelves in the warehouse。 (3) Sinopec Tianjin Branch 1. The connection between some pipelines and storage tanks is not flexible。 2.The storage of chemicals in Class A warehouses does not meet the requirements,Some chemicals are not classified、Separate stacks for storage,The corresponding product name is not completely set according to the type of chemical,Some chemicals are stacked out of limits。 (4) China Aviation Fuel Group Tianjin Petroleum Co., Ltd. 1. Safety assessment report、Safety assessment report of major hazards、The identification and grading of major hazards in the emergency response plan are inconsistent。 2.There is a danger that the connection of the human electrostatic discharger is virtual or the grounding effect is poor。 3.Filters in the unloading pump room、There is a flaw in the setting of the manual bleed valve,The existing design uses indoor emissions,There is a risk of polluting the working environment and causing fire and explosion safety accidents,Discharge operations empirically determine the endpoint,No indicative gauge is set (or designed).。 4.Settings for the video surveillance cameras in the reservoir area (e.g., quantity、height, etc.) does not meet the requirements of full coverage of the entire tank farm and effective monitoring of the tank top。 (5) PetroChina Dagang Petrochemical Company 1. The storage tank of gasoline 5E tank farm is equipped with only one kind of level gauge,Does not meet the requirements。 2.liquefied gas、The acrylonitrile tank farm is not equipped with a separate Safety Instrumented System (SIS),The timing of the completion of the rectification was not specified。 (6) PetroChina Northeast Sales Company Dagang Branch Kilometer Bridge Oil Depot Gasoline tank farm storage tank is only equipped with one kind of tuning fork level gauge,Does not meet the requirements。 Liaoning Province (1) Dalian Fujia Dahua Petrochemical Co., Ltd. 1. When the length of the cable trough is greater than 20m, multi-point repeated grounding is not carried out,The distance between the grounding points is not less than 20m。 2.The root of a storage tank in the naphtha tank farm is waterproof, and there is a phenomenon of damage,Prone to moisture accumulation,Causes corrosion to accelerate。 3.The interface section of the fire hydrant on the ground is not exposed to the ground,It is not convenient to operate in case of emergency。 4.There is no automatic exhaust valve at the top of the foam fire line,None of the fire water pipelines are marked green,Not easy to identify。 5.The meter wiring connected to the metal storage tank is not shielded by metal tubes,The upper and lower ends of the wiring metal pipe are not electrically connected to the tank wall,The meter is not fitted with an adapted surge protector。 6.The metal shell of the field instrument is not connected to the nearest grounded metal body such as a metal storage tank。 (2) Yisheng Dahua Petrochemical Co., Ltd. 1.V-8301A、V-8301B、A reinforcing ring was set in the middle of the walls of the three V-8301C tanks,However, there is no additional fire water cooling sprinkler line for the tank wall at the bottom of the reinforcing ring。 2.The foam station in the tank farm is arranged next to the fire embankment,The site is unattended,However, it does not have a remote control function。 3.The meter wiring connected to the metal storage tank is not shielded by metal tubes,The upper and lower ends of the wiring metal pipe are not electrically connected to the tank wall,The meter is not fitted with an adapted surge protector。 4.When the length of the cable trough is greater than 20m, multi-point repeated grounding is not carried out,The distance between the grounding points is not less than 20m。 5.There is no level gauge on the tank of the foam station;There is no foam mixture test port on the foam liquid pipeline,No jet test has been conducted,It is not possible to determine whether the foam system is reliable and effective。 6.The on-site emergency response plan lacks a plan for dealing with the fire of the storage tank,The specific disposal steps are not specified。 (3) Dalian West Pacific Petrochemical Co., Ltd. 1. The instrument wiring connected to the metal storage tank is not shielded by metal pipes,The upper and lower ends of the wiring metal pipe are not electrically connected to the tank wall,The meter is not fitted with an adapted surge protector。 2.There is a lack of cooling spray water pipe under the lowest reinforcing ring of the tank wall in the refined oil tank farm。 3.There is no metal hose connection between the above-ground fire lines of the four storage tanks in the crude oil tank farm and the foam mixture riser on the tank wall。 4.The interface of the semi-stationary fire protection system of the oil product tank is insufficient,Unable to support the entire foam system。 5.When the length of the cable trough or cable protection steel pipe is greater than 20m, multi-point repeated grounding is not carried out,The distance between the grounding points is not less than 20m。 6.Metal enclosures for electrical equipment in explosion hazard locations、Non-electrified bare metal parts such as metal wiring pipes are not fully grounded。 (4) North Huajin Chemical Industry Group Co., Ltd. 1. When the length of the cable trough is greater than 20m, no multi-point repeated grounding is carried out,The distance between the grounding points is not less than 20m。 2. Metal enclosures for electrical equipment in explosion hazard locations、Non-electrified bare metal parts such as metal wiring pipes are not fully grounded。 3.A ring of cooling water jet pipes set on the top wind rings on the top of the three crude oil storage tanks,It is set exactly in the center of the circumferential channel,Seriously affect the passage of workers,It also affects the escape of personnel and the operation of firefighters in emergencies。 4.0309-TK-001There is no safety valve in the dewatering tank under the liquefied gas storage tank。 5.The upper and lower ends of the metal pipe of the instrument wiring connected to the metal storage tank are not electrically connected to the tank wall,The meter is not fitted with an adapted surge protector;The metal shell of the field instrument is not connected to the nearest grounded metal body such as a metal storage tank。 6.There is no foam plug box at the foam plug set on the foam main pipeline outside the fire embankment in the tank farm,When there is a flowing fire in the floating pan、When there is a small fire in the local seal,Unable to dispose of it in a timely manner。 (5) Changchun Chemical (Panjin) Co., Ltd. 1. Metal shell of electrical equipment in explosion hazard places、Non-electrified bare metal parts such as metal wiring pipes are not fully grounded。 2.The metal shell of the field instrument is not connected to the nearest grounded metal body such as a metal storage tank。 3.There is no automatic exhaust valve at the top of the foam fire line in the tank farm,There is no pressure gauge interface to detect the working pressure of the foam generator on the foam pipeline outside the fire embankment。 4.Outside the cofferdam of the tank farm, the switching of rainwater drainage and oily sewage diversion valves was not realized,And there is no independent discharge outlet water seal for the production sewage pipeline of each fire partition。 5.The inlet and outlet valves of the ethylene propyl alcohol tank are not equipped with automatic control valves。(Major accident hazard) 6. The upper and lower ends of the instrument wiring metal pipe connected to the metal storage tank are not electrically connected to the tank wall,The meter is not fitted with an adapted surge protector。 Read More …
