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Audit of engineering for the Oseberg Delta pipelines

During the period 8 December 2006 - 31 January 2007, the Petroleum Safety Authority Norway (PSA) conducted an audit of Norsk Hydro Produksjon AS' (Hydro's) management of engineering for the pipelines to be used in the Oseberg Delta project. We did not find any nonconformities in relation to the regulations during the audit.

About the Oseberg Delta pipelines

Oseberg D is a gas processing facility linked to the Oseberg Field Center. The Oseberg Delta field will be developed with a single subsea well template, and the plan is for the field to start producing in the fall of 2007.

The project includes engineering, procurement, construction and installation of two 10-inch transport pipelines between the Oseberg Delta subsea structure and the Oseberg D facility, as well as an umbilical between Oseberg A and Oseberg Delta.

The distance between the Oseberg Field Center and the subsea structure where the pipelines will be installed is approx. nine kilometers.

Background for the audit

A key priority in our HSE follow-up is to ensure that the players follow up the technical condition of the facilities. In this context, it is important that we ensure that factors which may have an impact on the integrity of the pipelines throughout their lifetime are safeguarded during the engineering phase.

Purpose of the audit

The purpose of the audit was to follow up to ensure that the engineering of the pipelines is planned and executed in accordance with prevailing regulations and recognized standards.

Another objective was to verify the operator's system for following up suppliers, and to make sure that the management systems ensure transfer of experience.

Result of the audit

Our main impression is that compliance with regulatory requirements and the project's own requirements established in connection with engineering of the Oseberg Delta pipelines is handled in a satisfactory manner.

No nonconformities were identified in this audit activity, although we did find some areas where there is potential for improvement.

These areas are deficient system for internal handling of nonconformities and transfer of experience, insufficient nonconformity processes for internal audit activities and deficient systems for quality assurance and verification of new software.

Contact person in the Petroleum Safety Authority Norway:
Mike Theiss