On July 23, the State Administration of Work Safety and the Ministry of Public Security jointly issued the "Circular on the Incident of Fires and Explosions on the July 16 Oil Pipeline of Dalian PetroChina International Storage and Transportation Co., Ltd.". On the same day, the State Council issued the "Notice on Further Strengthening the Safety Production of Enterprises", and called for more effective management tools and policy measures to resolutely curb the occurrence of major accidents.
The “Notification†released by the General Administration of Safety Supervision and the Ministry of Public Security stated that after preliminary analysis, the cause of the accident was: In the case that the oil tanker had suspended oil unloading operations, it continued to inject crude oil desulfurizers containing strong oxidants into the oil pipelines, resulting in oil pipelines. A chemical explosion occurred in the road. The explosion caused a large amount of crude oil to leak and cause a fire. The specific cause of the accident is under further investigation and analysis.
According to reports, at 15:30 on July 15th, Singapore’s Pacific Oil Company’s 300,000-ton “Cosmic Gem†oil tanker began unloading oil from the crude oil tanker of Dalian PetroChina International Storage Co., Ltd. (International Storage & Transportation Company). The operation was performed at the same time on two oil pipelines. Around 20:00, the operators of Dalian Xiangcheng Commodity Inspection Technology Service Co., Ltd. Dalian Branch and Tianjin Huishengda Petrochemical Technology Co., Ltd. began to pass through the emptying valve on an oil pipeline (with an inner diameter of 0.9m) in the crude oil tank area to the oil pipeline. Daozhong injected the desulfurizer. At 13 o'clock on the July 16th, the oil tanker suspended the unloading operation, but the operation of injecting desulfurizer did not stop. After injecting 88 cubic meters of desulphurizing agent, the on-site operations personnel added water to flush the desulfurizer pipeline and pump. At 18:8, the oil pipeline near the injection site of the desulfurizer suddenly exploded, causing a fire, resulting in some oil pipelines and nearby Tank valves, fuel pump room and power system are damaged and a lot of crude oil leaks.
In recent years, China’s imports of high-sulfur crude oil have continued to increase. For the high-sulfur crude oils, non-hydrogenation and desulfurization pretreatment is performed before processing, so as to minimize the problems of equipment corrosion, product quality, environmental protection, and complex processing technology caused during the processing of sulfur in crude oil. Sulfur in crude oil is in the form of hydrogen sulfide or elemental sulfur. The addition of a desulfurizer containing a strong oxidant can remove sulfur, but if it is added too much, it is prone to fire or explosion at high temperatures.
The "Announcement" said that the main problems exposed by the accident include: First, the accident unit did not conduct scientific argumentation on the safety and reliability of the crude oil desulfurizers added; second, the method for adding desulfurizers for crude oil was not standardized and no safety operation rules were formulated; Third, there are loopholes in the safety management of the crude oil unloading process. Fourth, the accident caused damage to the power system. The emergency and fire-fighting facilities failed, and the tank valves could not be closed. In addition, there are 20 tanks in the crude oil tanker area of ​​the International Storage and Transportation Company in the port area, and there are other units of crude oil tanks, refined oil tanks, and liquid chemical product tanks. The centralized arrangement of crude oil and large-scale storage tanks for hazardous chemicals is also an important factor in causing accidents.
The Circular on Further Strengthening Safety Production of Enterprises, issued by the State Council, requires the focus on industries (fields) such as coal mines, non-coal mines, transportation, construction, hazardous chemicals, fireworks, civil explosives, and metallurgy. More effective management methods and policies and measures to consolidate and rectify illegal and illegal production practices, resolutely curb the occurrence of major accidents; build a sound national emergency rescue system as soon as possible, and impose a number of safe and applicable technical equipment and protective facilities in high-risk industries. Minimize the loss caused by the accident; establish a more perfect technical standard system, promote the safety production technology and equipment of the enterprise to fully meet the national and industry standards, and realize the improvement of China's safe production technology level. The "Notice" also requires strict industry safety access, and compliance with safety production standards as a pre-condition for access to high-risk industries, and strict safety standards approval system.
To learn lessons from this explosion accident, the Ministry of Transport has also issued an urgent circular a few days ago, requiring all transportation companies, especially the port companies, to immediately organize screening trouble-shooting of port oil products to eliminate potential accidents. Keep production equipment facilities in good operating condition. Strengthen the on-site management of port production operations. Port site operators must earnestly implement the post responsibility system and strictly implement the safe operation procedures for ports and hazardous chemicals. Strengthen safety supervision, and ensure safety supervision of port oil depots, oil pipelines, facilities, equipment, and transport ships. Strengthen emergency rescue preparations, increase investment, and strengthen the reserve of emergency supplies such as fire fighting and oil spills to effectively improve emergency response capabilities.
The “Notification†released by the General Administration of Safety Supervision and the Ministry of Public Security stated that after preliminary analysis, the cause of the accident was: In the case that the oil tanker had suspended oil unloading operations, it continued to inject crude oil desulfurizers containing strong oxidants into the oil pipelines, resulting in oil pipelines. A chemical explosion occurred in the road. The explosion caused a large amount of crude oil to leak and cause a fire. The specific cause of the accident is under further investigation and analysis.
According to reports, at 15:30 on July 15th, Singapore’s Pacific Oil Company’s 300,000-ton “Cosmic Gem†oil tanker began unloading oil from the crude oil tanker of Dalian PetroChina International Storage Co., Ltd. (International Storage & Transportation Company). The operation was performed at the same time on two oil pipelines. Around 20:00, the operators of Dalian Xiangcheng Commodity Inspection Technology Service Co., Ltd. Dalian Branch and Tianjin Huishengda Petrochemical Technology Co., Ltd. began to pass through the emptying valve on an oil pipeline (with an inner diameter of 0.9m) in the crude oil tank area to the oil pipeline. Daozhong injected the desulfurizer. At 13 o'clock on the July 16th, the oil tanker suspended the unloading operation, but the operation of injecting desulfurizer did not stop. After injecting 88 cubic meters of desulphurizing agent, the on-site operations personnel added water to flush the desulfurizer pipeline and pump. At 18:8, the oil pipeline near the injection site of the desulfurizer suddenly exploded, causing a fire, resulting in some oil pipelines and nearby Tank valves, fuel pump room and power system are damaged and a lot of crude oil leaks.
In recent years, China’s imports of high-sulfur crude oil have continued to increase. For the high-sulfur crude oils, non-hydrogenation and desulfurization pretreatment is performed before processing, so as to minimize the problems of equipment corrosion, product quality, environmental protection, and complex processing technology caused during the processing of sulfur in crude oil. Sulfur in crude oil is in the form of hydrogen sulfide or elemental sulfur. The addition of a desulfurizer containing a strong oxidant can remove sulfur, but if it is added too much, it is prone to fire or explosion at high temperatures.
The "Announcement" said that the main problems exposed by the accident include: First, the accident unit did not conduct scientific argumentation on the safety and reliability of the crude oil desulfurizers added; second, the method for adding desulfurizers for crude oil was not standardized and no safety operation rules were formulated; Third, there are loopholes in the safety management of the crude oil unloading process. Fourth, the accident caused damage to the power system. The emergency and fire-fighting facilities failed, and the tank valves could not be closed. In addition, there are 20 tanks in the crude oil tanker area of ​​the International Storage and Transportation Company in the port area, and there are other units of crude oil tanks, refined oil tanks, and liquid chemical product tanks. The centralized arrangement of crude oil and large-scale storage tanks for hazardous chemicals is also an important factor in causing accidents.
The Circular on Further Strengthening Safety Production of Enterprises, issued by the State Council, requires the focus on industries (fields) such as coal mines, non-coal mines, transportation, construction, hazardous chemicals, fireworks, civil explosives, and metallurgy. More effective management methods and policies and measures to consolidate and rectify illegal and illegal production practices, resolutely curb the occurrence of major accidents; build a sound national emergency rescue system as soon as possible, and impose a number of safe and applicable technical equipment and protective facilities in high-risk industries. Minimize the loss caused by the accident; establish a more perfect technical standard system, promote the safety production technology and equipment of the enterprise to fully meet the national and industry standards, and realize the improvement of China's safe production technology level. The "Notice" also requires strict industry safety access, and compliance with safety production standards as a pre-condition for access to high-risk industries, and strict safety standards approval system.
To learn lessons from this explosion accident, the Ministry of Transport has also issued an urgent circular a few days ago, requiring all transportation companies, especially the port companies, to immediately organize screening trouble-shooting of port oil products to eliminate potential accidents. Keep production equipment facilities in good operating condition. Strengthen the on-site management of port production operations. Port site operators must earnestly implement the post responsibility system and strictly implement the safe operation procedures for ports and hazardous chemicals. Strengthen safety supervision, and ensure safety supervision of port oil depots, oil pipelines, facilities, equipment, and transport ships. Strengthen emergency rescue preparations, increase investment, and strengthen the reserve of emergency supplies such as fire fighting and oil spills to effectively improve emergency response capabilities.
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