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Recently, Sinopec Yangzi Petrochemical Company Limited experienced two consecutive production safety accidents during the centralized major maintenance phase of its units. The two accidents occurred only 27 days apart, resulting in a total of 6 contractor worker deaths and 3 injuries.
The investigation preliminarily revealed that the two accidents exposed systemic loopholes in the company's security regulation regarding maintenance and repair. Several regulation personnel have been dismissed, and relevant responsible persons have been subjected to criminal compulsory measures according to law.
“5・29” Olefin Division 1# Ethylene Unit Flash Fire Accident: 4 Contractor Personnel Killed
At 13:58 on might 29, 2026, a flash fire accident occurred at the major maintenance construction site of the 1# Ethylene Unit in the Olefin Division of Yangzi Petrochemical, causing the deaths of 4 contractor workers.
It is understood that Yangzi Petrochemical's 1# Ethylene Unit started a shutdown to major maintenance on might 14, simultaneously carrying out unit material withdrawal and material purging work. On might 24, the process disposal of the entire unit was completed, and after confirmation by the workshop, it was handed over to the maintenance unit to carry out construction work.
On might 29, the maintenance unit organized personnel to carry out the disassembly work of the cracking gaseous valve of cracking furnace BA-105. Around 13:50, the workers disassembled the valve outlet flange and utilized an perspective grinder to cut the inlet flange bolts. At 13:58, combustible material leaked from the valve outlet flange, and the leaked material encountered sparks generated by the grinding, triggering a flash fire. The open flame at the scene lasted to about 6 minutes before being extinguished.
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