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Audit of electrical and safety systems on Heidrun

During the period 24 January - 4 February 2005 we audited Statoil with regard to the electrical and safety systems on Heidrun. The audit began with a start-up meeting with Statoil on 24 January and was carried out as an offshore verification on Heidrun during the period 1 - 4 February 2005.


The audit focussed on:

  • Competence and training (qualifications of the skilled electrical personnel)
  • Electrical and safety critical maintenance lag
  • The operator's own supervision of electrical installations
  • Follow-up of unwanted incidents
  • Technical condition and history of maintenance
  • Function tests on safety systems

The audit was carried out as a combination of interviews with selected personnel, documentation verification, inspection of the installation and function testing of selected safety systems.

Background for the audit

The Petroleum System Authority Norway sets the requirements for and ensures that the petroleum industry players maintain a high level of health, environment, safety and emergency preparedness, thus also contributing to the largest possible value creation for society.

The Petroleum Safety Authority Norway is to contribute to the reduction of risk levels in the offshore petroleum activities by ensuring that the players facilitate technical and operational integrity of the installations and following up the interaction of the people/technology/organization in HSE-critical systems.

The electrical and safety systems constitute key parts of the installation's technical barriers, and a good safeguarding of these is important to maintain an acceptable level of risk on the installation.

Purpose of the audit

The purpose of the audit was to verify that Statoil plans, implements and follows up the activity in accordance with the regulatory requirements concerning electrical and safety systems.

Result of the audit

The general impression of the electrical installations on Heidrun was good.
The audit activities disclosed several deviations from the regulations.

None of these were serious enough to justify an order, either separately or put together. In addition, the report contains items with improvement potential.

The audit disclosed discrepancies within the following areas:

  • Maintenance.
  • Follow-up of temporary equipment.
  • Ignition source disconnection.
  • Locking of rooms containing electrical equipment.
  • Electrical installation.

In addition, a potential for improvement has been registered in the following areas:

  • Development and maintenance of competence in the electrical profession.
  • The operator's own supervision of electrical installations.
  • Follow-up of technical conditions.
  • Follow-up of compensatory measures.

Contact person i the Petroleum Safety Authority
Mike Theiss