Source:
https://scmp.com/news/hong-kong/article/1387039/loose-wire-cited-mtr-meltdown
Hong Kong

Loose wire cited in MTR meltdown

Company says early investigations indicate a breakage in power line support, but full details will be made public after laboratory tests

Tony Lee shows how the overhead power line dangles from the ceiling after a copper wire that kept it in place broke. Photo: Ada Lee

Faulty design, defective material or poor workmanship could have caused the five-hour disruption on the MTR's Tseung Kwan O line on Monday, the railway company said yesterday.

Train services were halted on Monday when a power failure was triggered by a 30-metre length of overhead power line that came loose and dangled up to a metre below the ceiling between Yau Tong and Tiu Keng Leng. A Kwun Tong line train bound for Yau Ma Tei on a section of track shared with the Tseung Kwan O line had to stop in a tunnel, while another was halted at Tiu Keng Leng station.