The Norwegian Ocean Industry Authority (Havtil) has carried out an audit of Equinor and its engineering of the Yggdrasil oil and gas export pipelines.
The audit was conducted on 3 September 2024.
Background
The Plan for Installation and Operation describes the connection of the oil and gas export pipelines to the Yggdrasil facilities and connection to existing oil and gas transport pipelines. Separate stakeholder companies for the oil and gas export pipelines have been established where Equinor is the operator and is responsible for project execution.
On behalf of the stakeholder companies, Aker BP is responsible for the engineering and installation of pipe elements and valves interfacing with the production facilities, and the connections to existing export pipelines which utilise a contract in Aker BPs Subsea Alliance.
Gassco is responsible for the project implementation of hot-tap connections to existing gas transport pipelines.
Objective
The objective of the audit was to ensure that the engineering of the Yggdrasil oil and gas export pipelines complies with requirements in the HSE regulations and standards, and Equinors own requirements, and to ensure compliance with their supervisory duty in the execution of project deliveries.
Result
No non-conformities or improvement points were observed in this audit.
Yggdrasil
Yggdrasil is a coordinated development of the Hugin, Munin, and Fulla fields. The development encompasses a series of discoveries and prospects in the central part of the North Sea, approximately 150 kilometres off the coast of Vestland.
The development concept consists of an unmanned production facility in the north (Munin), a processing facility with a well area and living quarters (Hugin A) in the south, and a normally unmanned wellhead platform at Frψy (Hugin B), which is tied back to Hugin A. Additionally, a total of nine subsea templates are tied into the area development.
