A safety incident caused by a small screw, watch with horror!

It is said that the dike, collapse in an ant hole, do not look at the screw head small (relative to the equipment), really launched the fire temperament can not be small, light cause unexpected downtime, reduce production efficiency, heavy cause a big disaster, resulting in huge losses. The history of the need for screws to take the blame for the accidents abound.

Case one

June 10, 1990, British Airways Flight 5390 in flight, the cockpit of a windshield suddenly flew off, the captain of the upper body was sucked out of the aircraft, but fortunately in the efforts of the co-pilot in Southampton Airport to land safely.

No one was injured except the captain and the flight attendant who was holding him. The cause of the accident was that 84 out of 90 fixing screws for the cockpit windshield had just been replaced, which were smaller and shorter than the standard.

Case Tow

In September 2009, a ceiling fan suddenly fell from the ceiling in the cafeteria of Guangzhou University of Technology at the peak of lunchtime, and the rapidly rotating fan smashed and scratched two students, and the cause of the accident was the fall of the screws fixing the fan.

Case Three

On December 14, 2010, the No. 5 escalator of Shenzhen Metro Line 1 at Guomao Station suddenly reversed from upward, resulting in injuries to 25 passengers. The cause of the accident was the loosening of the fixed bolts of the escalator mainframe, one of which was cut off, causing the mainframe support to shift and the drive chain to detach from the sprocket, and the upward escalator slid down under the action of the weight of the passengers.

Case Four

At 16:45 on June 29, 2010, the space capsule of "Space Trek" entertainment facility in Shenzhen Eastern Overseas Chinese Town collapsed, resulting in 6 deaths and 10 injuries, and the cause of the accident was the loosening of a bolt.

Case Five

At 18:35 on November 6, 2017, Shenzhen Wei Hongzhi Hardware Products Co., Ltd. a female worker in the operation of the punch press by the side of the sudden dumping of another punch press smashed down, after the rescue invalid death, the reason is that the collapse of the punch press machine base without the installation of the foot bolts, the side of the side should be 2 bolts but only installed a bolt, and in the long-term operation of the loosening of the center of gravity eventually led to the collapse of the center of gravity imbalance.