HomeBusinessInterim ORR report on Hitachi train cracks released

Interim ORR report on Hitachi train cracks released

WEEKLY NEWSLETTER SIGN UP

The Office of Rail and Road (ORR) has said in an interim review that Hitachi Class 800 and 365 trains had been affected by stress corrosion and fatigue cracks. The result of this was a “significant” number of trains being withdrawn from service in May, it said in a statement.

ORR commended the industry’s quick response and the work undertaken to safely reintroduce the trains into service.

Cracks found in the area of the bolster close to the yaw damper bracket and anti-roll bar fixing points were a result of fatigue, and cracks found in the area where the lifting plates attach to the vehicle body were the result of stress corrosion cracking.

Anti-roll bar and yaw damper connection points and lifting plate on a Class 800 train bogie.

Stress corrosion cracking occurs when susceptible materials are exposed to a specific corrosive substance while subject to stress.

The interim report says the industry worked together as soon as the cracks were identified to quickly withdraw the trains and put in place a process to assess which trains could go back into service.

Since being returned into service, trains have performed as specified, with no unsafe conditions or harm arising from the cracking.

A final report, after further work with Hitachi and the industry, is expected in December.

Ian Prosser, ORR.

HM chief inspector of railways at ORR, Ian Prosser CBE, said: “Our interim findings confirm the cracking in the yaw damper and lifting plate are a result of fatigue and stress corrosion cracking – and that Hitachi made the sensible decision to withdraw all trains.

“Since then, the majority of trains have been put back into service with no unsafe conditions and no harm arising from the cracking.

“I welcome the good collaboration that has taken place since this issue arose. We are continuing to work with all parties to determine the root cause and will publish our final report in December.”

The final report will look into the root cause of the cracking, and consider Hitachi’s plans regarding the long term fleet recovery and management. It will identify any areas for improvement for the industry.

In June, ORR published its review of the impact on passengers which found train operators affected by the cracks provided clear and consistent information to passengers during the disruption.

ORR’s passenger review also identified areas aimed at further reducing the impact on passengers should similar disruption occur in future.

LEAVE A REPLY

Please enter your comment!
Please enter your name here

- Advertisement -

Latest news

Boost for regional transport in upcoming budget

It looks likely that Chancellor Rishi Sunak will announce a £5.7 billion investment into sustainable transport settlements for city regions in his Autumn Budget...

TSSA members vote to accept ScotRail pay offer

The TSSA has called off its dispute with ScotRail, with its members having voted to accept a new pay offer. The TSSA says the offer...

Passengers give rail a thumbs up in latest survey

Nearly ninety per cent of rail passengers said they were satisfied with their last journey, according to a new survey by watchdog Transport Focus. The...
- Advertisement -

More news

Rail museum holds consultation on major plans

The National Railway Museum will house a consultation on plans for a new Central Hall as part of its vision as the cultural heart...

TfL bodycam video results in assault conviction

Uxbridge Magistrates have sentenced a woman to a 12-month community order and 35 rehabilitation activity requirement days following a physical assault on two Transport...

Laing O’Rourke ‘well positioned’ by FY21 results

Laing O’Rourke says its latest earnings show it is continuing to “deliver certainty and technical excellence for clients and stakeholders” and that it is...
NEWSLETTER SIGN UP