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Audit of management of maintenance in Island Offshore

Audit: During the period 8 -10 December 2009, the Petroleum Safety Authority Norway (PSA) conducted an audit of the management of maintenance in Island Offshore (IO), including the use of economic experience data in this connection.


We noted that processes relating to improvement and optimization of the company's maintenance management had been implemented.

Background for the audit
The PSA is to set standards for, and follow up to ensure that the players in the petroleum activities maintain high standards as regards health, safety and the environment, thereby contributing towards creating the greatest possible values for the Norwegian society.

The follow-up shall be system-oriented and risk-based, and shall be supplementary to the industry's own follow-up.

The Storting White Paper No. 7 (2001-2002) relating to health, safety and environment in the petroleum activities, Chapter 4.12.2, also stipulates the following regarding maintenance management:

"The authorities are of the opinion that it is necessary to further develop management models for operations and maintenance in cooperation with the industry in order to ensure a joint effort to strenghten the quality of maintenance in the petroleum activities through, inter alia, development of methods and technologies, competence enhancement and research."

The Storting White Paper No. 12 (2005-2006) relating to health, safety and the environment in the petroleum activities indicates in Chapter 5.4 that deficient maintenance may increase the risk of major accidents, injuries and incidents, and the White Paper refers to a rather comprehensive review of audit reports which shows a relatively large share of nonconformities in relation to the regulatory requirements. These include deficiencies in the prioritising of maintenance, evaluation of critical conditions, follow-up of temporary equipment, unsatisfactory documentation and outstanding maintenance of safety-critical equipment. Moreover, in some cases the competence relating to maintenance was inadequate.

Current requirements relating to maintenance management are stipulated specifically in the Activities Regulations and the Management Regulations.

Purpose of the audit
The purpose of the audit was to

  • investigate whether IO conducts classification of equipment in accordance with current regulatory requirements and accepted standards, cf. Chapter IX of the Activities Regulations concerning maintenance
  • evaluate IO's use of this classification in their maintenance management
  • examine to what extent economic experience data/quality costs relating to erroneous maintenance are recorded and used to improve maintenance management
  • examine the analysis basis for maintenance decisions.

Result of the audit
The results are based on the presentation of elements in IO's management systems and interviews with selected personnel, primarily the owners of the maintenance process, with subsequent verification of governing documents and systems for conducting maintenance on the company's facilities in Norway with an Acknowledgement of Compliance (AoC).

The conclusion from the audit is that IO does not fulfil all the requirements in the regulations  relating to maintenance management. It should also be mentioned that this to a large degree coincides with findings and conclusions made in a Statoil report dated 17 February 2009, which was requested and submitted to us during the audit, cf. Chapter 7 concerning documents.

Some of our observations are characterised as nonconformities, cf. the classification in Chapter 5, and are grouped in the following main categories:

  • tagging and classification of systems and equipment
  • documentation of the classification carried out
  • use of classification as a basis for selecting and prioritising maintenance
  • maintenance efficiency
  • identification of nonconformities and applications for exemption
  • follow-up of contractors
  • governing documents.

In addition we identified one potential improvement.

Journal 2009/1122 (documents in Norwegian)