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SAFETY ALERT SYSTEM / EQUIPMENT

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SAFETY ALERT

SYSTEM / EQUIPMENT Rolling stock / 85 t wagon coupling screw

SAFETY ISSUE DESCRIPTION Breaking of coupling at low temperatures even when submitted to moderate traction efforts.

This safety issue concerns 85 t coupling screws made of non resilient steel, prone to fragile breaking in subzero temperatures.

This issue was one of the causes of a wagon runaway followed by a collision at Modane (France) These defective coupling screws can be detected in maintenance because they do not bear any manufacturer nor standard compliance markings.

CIRCUMSTANCES Sub-zero temperatures

REASON FOR ISSUE Being a unified component, defective screws may have been fitted to any wagon anywhere in Europe.

LIST OF SUPPORTING DOCUMENTS

Photos of the broken screw

Drawing of the compulsory markings to be found on the coupling screw and the others coupling components.

LINKED WITH OCCURRENCE NOTIFIED TO ERA

DATABASE

Modane (France)

http://erail.era.europa.eu/occurrence/FR-0784-3-0/Trains-collision,-24-01-2013,-Modane-(France) 24:01/2013

ISSUER

ORGANISATION Bureau d’enquêtes sur les accidents de transport terrestre (Fr NIB)

CONTACT DATA +33 1 48 81 39 21 83 cgpc.beatt@developpement-durable.gouv.fr

ISSUE DATE 26/11/2014

Cytaty

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