The audit was conducted on 30 and 31 August 2022.


The background to the audit was the establishment of a new landfall solution and a subsea tunnel for landing existing Statpipe pipelines that are connected to new pipelines in the landing tunnel on the seabed, as well as connection inside the valve station at Kalstø. The audit was restricted to Gassco’s follow-up of tunnel construction, follow-up of risks and its supervisory duty. The total project includes risks linked to major accidents and working environment conditions. The scope of the audit is restricted to work related to the actual tunnel driving, and preparations and planned finishing works.


The objective of the audit was to verify that Gassco is ensuring that the new landfall tunnel construction meets the regulatory requirements.


No non-conformities were identified during the audit.

One improvement point was identified relating to health-related risk factors.

What happens now?

We have asked Gassco for an assessment of the improvement point observed. The reply deadline was set to 28 October 2022.