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Audit - engineering and construction of Ormen Lange subsea facility

The Petroleum Safety Authority Norway (PSA) has conducted an audit of the work of Norsk Hydro (Hydro) in engineering and constructing the subsea facility for Ormen Lange.

Background for the audit

Two key priorities for the PSA's follow-up of HSE are to follow up that the players are facilitating and maintaining the technical integrity on their installations, and to contribute to a transfer of experience between the players.

It is also a goal for the PSA to help minimize costs related to the risk of material damage and accidental operational disruptions.

The Ormen Lange development contains subsea solutions with challenging system designs located in deep water. The subsea facility's lifetime has been set at 30 years, with a 50-year lifetime for the pipelines.

Stringent requirements for regularity and poor access for maintenance means that robust solutions are needed.

An audit concerning choice of materials for the subsea facility was conducted during the fall of 2003. The project has now entered the detail stage, and construction work is about to start both at FMC in Kongsberg and at Hereema in Tønsberg.

Purpose of the audit

The purpose of the audit is to follow up that the engineering and construction of the subsea facility on Ormen Lange is being planned and executed in accordance with current regulatory requirements and recognized standards.

The audit was established specifically to follow up certain elements from previous audits, and to assess how Hydro has established its project organization and how they follow up the work that is being done by the various subcontractors.

Result of the audit

Our main impression is that Hydro emphasizes areas associated with project management that are important for a successful implementation, such as handling of interfaces, follow-up of subcontractors and transfer of experience.

The project has an ownership of the challenges it faces and is working to rise to the challenges.
We can see some areas of improvement linked to for instance the management of technology qualification.

The PSA sent its report to Norsk Hydro Produksjon AS on 2 July 2004.

The PSA's follow-up

Contact person in the PSA:
Mike Theiss