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Audit of environmental data collection at the Ekofisk Centre

During the period 28-30 November 2007, the Petroleum Safety Authority Norway (PSA), together with the Norwegian Meteorological Institute (Met.no) conducted an audit of ConocoPhillips Skandinavia AS' collection of environmental data at the Ekofisk Centre. No regulatory nonconformities were identified.

Background for the audit
The background for the audit is that the quality of environmental data collection at the Ekofisk Centre is of great importance for flying weather and the flight control service offshore, weather-dependent operations in the petroleum activities, the supply service and also for society in general as a foundation for Met.no's national weather database.

In order to achieve sufficient accuracy in the measurements, it must be possible to document that the measured values have an accuracy that falls within the regulatory requirements.

Purpose of the audit
The purpose of the audit was to review relevant procedures for conducting, maintaining and reporting collection of environmental data, and to assess the technical standard of systems and equipment at the Ekofisk Centre, cf. Section 25 of the Framework Regulations relating to collection of data on natural conditions, Section 4 b of the Information Duty Regulations relating to the requirement to retain and discard data and Section 16 of the Facilities Regulations relating to instrumentation for monitoring and recording with guidelines, and reference to NORSOK-standard N-002.

The regulatory requirements also include METAR (Meteorological Aerodrom Reports) observations.

Result of the audit
No regulatory nonconformities were identified. The measurement inspection did not reveal any deviations from the recommended standard NORSOK N-002 for results of measurements that exceeded the tolerances between the operator's measuring instruments and the control instruments and Met.no's travelling standards.

All equipment used to collect environmental data was satisfactorily cleaned and in good condition. The location of the anemometers in the mast on the derrick roof (main anemometer) and in the drilling derrick are regarded as being the best alternatives for maximum free exposure.

The equipment was subject to the applicable inspection procedures for the Ekofisk Centre. The maintenance system for the equipment is a part of SAP. Both the maintenance management program and the overview of completed maintenance are found in SAP and are traceable. The maintenance is carried out by the technical personnel on board the Ekofisk Centre.

Contact person in the Petroleum Safety Authority Norway:
Mike Theiss