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All bullet trains in Japan being checked to identify anomaly: Officials

Press Trust of India  |  Kumamoto (Japan) 

All bullet trains in are being checked to identify any after the country suffered its first blip to its high-speed safety track record in December last year when severe cracks were found on the frames of one of the shinkansens, officials here said.

In the 54 years of its existence, there has been no fatality on the system.

On December 11 last year, a 16-cm crack at the bottom of a holding the set of wheels and two 14-cm fissures on both sides of the frame were discovered by investigators who were probing a burning smell and an abnormal motor sound in a after it left in Fukuoka, in southwestern Japan, for

Though none of the 1,000 passengers was injured, preserving Japan's record of zero casualties since the started running in 1964, investigators said the cracks could have caused a derailment and used the label "serious incident" for the first time.

"We are conducting magnetic particle test in all our trains. We are checking the thickness of all our frames as we have found that the frames in which the cracks appeared were thinner than the minimum required. If we find any frame to be thinner, we will replace it," Takano, of the rolling stock at the JR Railway Company, said.

The JR Railway Company is one of the constituent companies of the Railways Group. It operates in Kyushu, the third largest island in

Besides JR Kyushu, four other companies -- JR East, JR Central, JR West, and -- operate bullet trains in Japan.

said the JR has already finished checking 135 of its high-speed trains and only is remaining.

Similar checks are being conducted across all shinkansens, he said.

In February, Kawasaki Heavy Industries, the manufacturer of the undercarriage on which the cracks were found, offered an apology over the incident and disclosed it had shaved the thinner than the minimum required for the boggies, a practice that violated the company's production manual.

The company said workers did not fully understand the document and they scraped off the bottom of the undercarriage frame to smooth the surface before welding work.

(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)

First Published: Thu, November 08 2018. 14:45 IST
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