Seadrill has applied for an Acknowledgement of Compliance for the West Bollsta mobile drilling facility.

In connection with an AoC application, the PSA conducts audits within selected specialist domains.

From 11 May to 25 June 2020, we conducted an audit of Seadrill’s management and follow-up of drilling and wells on West Bollsta. During the audit, the facility was in the process of being prepared for operation on the NCS.


The objective of the audit was to verify the technical condition, organisation, preparations for operation and degree of completion of relevant documents in the management system, as well as compliance with company procedures, regulations and standards.


Two non-conformities were identified, relating to:

  • Overview of critical operations
  • Access conditions

In addition, three improvement points were identified, relating to:

  • Maintenance management
  • Lack of overview of BOP shearing capacity
  • Deficient labelling

What happens now?

We have asked Seadrill to report on how the non-conformities will be addressed, and for an assessment of the improvement points. The reply deadline is set at 22 July 2020.

Before we issue an AoC, the company must have corrected all known safety-critical non-conformities, and the facility must have been issued with maritime certificates from the appropriate flag state.