Since 2010, there have been a number of anchor line failures on the Norwegian Continental Shelf. During the period, COSL experienced a double line failure on COSL Pioneer.

The objective of the audit was to verify that COSL has a system to provide for learning from its own and others' incidents in order to reduce the likelihood of a new line failure.

Result

One non-conformity was identified in connection with model tests following an upgrade.

In addition, improvement points were identified in connection with:

  • Investigations and follow-up of investigations
  • Training and drills
  • Procedures
  • Inspection of lower fairleads

COSL Drilling AS has been given a deadline of 23 October 2015 to report on how the non-conformity and improvement points will be dealt with.

Non-conformity:

Entails that a condition is assessed as not complying with a regulatory requirement.

Improvement point:

Entails that we have identified a deficiency or weakness, without there being sufficient grounds for determining a breach of regulatory requirements.