LOTOTO workers don't understand the dangers of stress
Three workers prepare to open the polymer collection tank and remove the polymer. Together, they removed the bolts from the 1.5-meter canister cover. When half of the bolts were removed, the residual pressure in the collection tank blew off the cover plate, striking three workers on the spot and fatally injuring them.
The cause of the accident: the three employees were unaware of the potential harm caused by the accumulated pressure when they removed the cover bolt. This operation had no maintenance procedures and field workers were unaware of the potential hazards of the collection tank design.