OSAKA -- A crack has been found in the undercarriage of an Osaka subway train car, its operator said on Aug. 31.
The announcement comes after cracks were found in the undercarriages of Osaka-based Nankai Electric Railway Co.'s airport express and local trains.
The subway operator, Osaka Metro Co., reported the problem to the Land, Infrastructure, Transport and Tourism Ministry's Kinki District Transport Bureau. The ministry's Japan Transport Safety Board (JTSB) did not recognize the case as a serious incident that could have led to a major accident.
Mechanics found an about 30-centimeter-long crack in an undercarriage of a Midosuji Line train during an inspection on July 17, company officials said. The undercarriage was immediately replaced.
The discovery prompted Osaka Metro to inspect 1,293 vehicles using the same type of undercarriage, but found no more cracks.
The undercarriage in question was produced in 1991 by the company that manufactured the components for Nankai's "rapi:t" airport express train, in which cracks have been found. The JTSB recognized the discovery of one crack in a Nankai airport express train undercarriage as a serious incident.
(Japanese original by Masaki Takahashi, Osaka City News Department)