7 casualties and 5 injuries caused by explosion in Kunshan, Jiangsu Province: hydrogen deflagration caused by poor heat dissipation

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 7 casualties and 5 injuries caused by explosion in Kunshan, Jiangsu Province: hydrogen deflagration caused by poor heat dissipation


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7 fatalities and 5 injuries caused by explosion occurred in Kunshan, Jiangsu Province (Source:)

According to CCTV news, according to the latest announcement issued by the office of Jiangsu Provincial Safety Production Committee, at about 7:12 on March 31, 2019, a container containing magnesium alloy debris waste outside the processing workshop of Kunshan Handing Precision Metal Co., Ltd. in Kunshan City, Suzhou, occurred deflagration accident, resulting in 7 deaths and 5 injuries.

Preliminary analysis shows that the direct cause of the accident is the use of emulsified cutting fluid with high water content in the processing of magnesium alloy castings. The collected magnesium alloy debris waste has not been effectively dewatered. Magnesium reacts with water and releases hydrogen. Moreover, the reaction is intensified because the stacking of magnesium alloy debris is too centralized and the heat dissipation is not good, which causes the explosion of hydrogen in the container instantly. Burning and deflagration shock waves with burning magnesium alloy debris break through the rolling shutter door of the container facing the machine shop, resulting in casualties of employees near the rolling shutter door in the machine shop.

7 deaths and 5 injuries have been caused by the controlled accident of the person in charge of the explosion-related enterprises in Kunshan

Beijing News Today (31) morning, Kunshan Handing Precision Metal Co., Ltd. had a fire and explosion accident, killing 7 people and injuring 5 people. Police officers from the police station of the comprehensive security zone of Kunshan Public Security Bureau told the Beijing News that the responsible persons of the enterprises involved in the incident were under investigation.

Suzhou notifies Kunshan of deflagration accident: the deflagration of scrap metal containers

At about 7:12 a.m. on March 31, a container for storing scrap metal on the outdoor field of the workshop of Handing Precision Metal Co., Ltd. in Kunshan Comprehensive Safeguard Zone burst into flames, causing a fire in the workshop. According to an official notice issued by Kunshan, by 10 a.m., the scene of the accident had been cleaned up, resulting in seven deaths, one serious injury and four minor injuries.