The investigation report believes that the driver of the tank truck involved in the accident was running long distances and operating continuously. When the unloading operation of the liquefied gas truck was carried out at midnight, the unloading procedures were not strictly followed, and serious operation errors occurred, which caused the quick connection interface and the liquid phase discharge pipe of the tank truck to fail to be reliably connected. When the liquid phase ball valve of the tanker was opened, the liquid phase ball valve was separated instantly, causing a large amount of liquefied gas in the tank to leak. The on-site personnel failed to deal with it effectively. The leaked liquefied gas rapidly vaporized and diffused rapidly, forming an explosive mixture with air to reach the explosion limit, and exploding and burning when encountered with an ignition source. The continuous burning of the liquefied gas leakage area has successively caused explosions in the tanks of the leaking vehicles and other transportation vehicles parked in the loading and unloading areas. The explosion caused the car body and tank body to decompose, and splashes such as tank body debris hit the surrounding facilities, material pipeline gallery, liquefied balloon tank, isooctane storage tank, etc., causing 2 liquefied balloon tanks to leak and burn, and 2 isooctane The storage tank burned and exploded.
At around 1 am on June 5, a liquefied petroleum gas tanker in the loading and unloading area of the Linyi Jinyu Petrochemical Co., Ltd.'s storage and transportation department leaked liquefied petroleum gas during the unloading operation, causing a major explosion and fire accident, causing a total of 10 deaths , 9 people were injured, of which, 1 was seriously injured and 8 were slightly injured. Among the 10 dead, 5 were employees of Linyi Jinyu Petrochemical Co., Ltd. and 5 were drivers of tank trucks. The direct economic loss caused by the accident was about 44.68 million yuan.