RAIL REGULATOR Tom Winsor was this week expected to consider a compensation claim from passenger operator GNER against Railtrack.
GNER launched its original claim following disruption to services in the months following the October 2000 derailment on the East Coast Main Line at Hatflield.
The National Vehicle Charge Committee, a body established under the Railways Act and made up of officials from the industry, agreed with GNER that the disruption in the months after the crash was unreasonable.
But the committee did not rule on the length of the extraordinary disruption caused by speed restrictions - which were imposed by Railtrack across the network as engineers looked for evidence of gauge corner cracking, the cause of the Hatfield crash.
Using powers under the Railways Act, Winsor was due to hear evidence from the two sides this week. He set aside three days for the hearing, and a ruling on the length of time over which disruption was unreasonable is expected by the end of the month.
In a separate case, Winsor hopes to hear in the next few days if his appeal against a High Court judgement that the Insolvency Act overrules the Railways Act has been successful.
The High Court ruled in May that if a company in administration wished to use section 17 of the Railways Act to gain regulatory protection, consent would first have to be obtained from the administrators. The Office of the Rail Regulator said it was appealing against the decision as it undermined its powers.