Explosion Incident at Hsintienlun Power Plant on October 28, 1993, at 4:03 PM-Long Men Technology Co., Ltd.

Explosion Incident at Hsintienlun Power Plant on October 28, 1993, at 4:03 PM

Cause of the Accident: Improper human operation.
Number of Deaths: 6 people.
Number of Injuries: 26 people.
Economic Loss: NT$500 million (equipment damage)
Incident Investigation:
After six months of investigation, the Taichung District Prosecutors Office concluded that when Taiwan Power Company (Taipower) commissioned Mitsubishi Heavy Industries of Japan for the project, Mr. Okazaki Katsuhisa, the engineer responsible for the design of the load break switch (LBS) protecting the excitation transformer in the hydroelectric equipment, failed to meet the original design specifications stipulated in the contract between Taipower and Mitsubishi. Mitsubishi’s on-site testing engineer Mr. Kuroiwa Shigeyoshi also failed to take necessary emergency measures to temporarily connect the 50BF control circuit in time.
Moreover, Mr. Lien Hsieh-Tseng, head of the change unit in Taipower’s Hsintienlun Engineering Completion Trial Run Team, failed to switch the 43R@L (possibly intended as 43R/L?) relay to the remote R position. In addition, Mr. Hsiao Ching-Hsin from Pao-Chang Co., a subcontractor under Mitsubishi, did not follow proper cable installation procedures, misconnected the cables, and caused a three-phase short circuit that led to an electrical explosion. This series of human errors was the primary cause of the disaster.

Source:
https://zh.wikipedia.org/w/index.php?title=1993年新天輪發電廠爆炸事故&oldid=48178916
Last updated: Tuesday, February 6, 2018, 11:40 AM

Review:
If any one of the circuit breakers in the above-mentioned test transformer circuit had been equipped with the POCT system (or device), the failure to “promptly connect the 50BF control circuit and switch the relevant 43 relay to the remote R position” would not have prevented the circuit breaker from tripping, thus avoiding the major disaster.

← Previous

Fukushima Daiichi Nuclear Power Plant Accident – March 11, 2011

From Invisible Threats to a Net-Zero Future: Taiwan’s Digital Breakthrough

Back

TEL

FAX

MOBILE