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Audit of collection of environmental data on board West Navigator

Audit: The Petroleum Safety Authority Norway (PSA), with the assistance of the Norwegian Meteorological Institute (Met.no), conducted an audit of the collection of environmental data on board West Navigator during 25 - 27 March 2009. We identified five non-conformities in relation to the regulatory requirements and five improvement items.


Background for the audit
The background for the audit is that the quality of the collection of environmental data from the Ormen Lange field is of great significance for the aviation weather and flight control services at sea, weather-dependent operations in the petroleum activities, as well as the supply services, and as a basis for Met.no's national weather database.

To achieve a sufficient degree of accuracy in the measurements, it is necessary to be able to document that the available values have an accuracy which meets the regulatory requirements.

The background for the audit is relevant regulatory requirements and also conditions stipulated in connection with the Plan for Development and Operation (PDO) for the Ormen Lange field.

Reference is made to conditions nos. 13 and 15 of Parliamentary Bill 41, in which are stated the requirements for collection, quality assurance and delivery of meteorological and oceanographical data from the Ormen Lange field when there are drilling facilities present. We also refer to a meeting with Shell on 21 August 2007, and the minutes of this meeting where Shell gives an account of how meteorological data will be collected on the field.

Purpose of the audit
The purpose of the audit was to evaluate the players' work on relevant routines to perform, maintain and report on the collection of environmental data, and to assess the technical standard of systems and equipment on West Navigator,cf. regulatory requirements stipulated in Section 25 of the Framework Regulations relating to requirements related to collection of environmental data, Section 4b of the Information Duty Regulations  relating to requirements related to safekeeping and discarding of data and Section 16 of the Facilities Regulations relating to instrumentation for monitoring and recording with guidelines and reference to the NORSOK standard N-002. The regulatory requirements also include METAR (Meteorological Aerodrom Reports) observations.

Result of the audit
Five non-conformities were found, as well as five improvement items in relation to the regulatory requirements. In this connection we would in particular refer to Section 16 of the Facilities Regulations relating to monitoring and recording with guidelines and reference to the recommended standard NORSOK N-002 for measuring results beyond the tolerances between the operator's measuring instruments and Met.no's calibrated travelling standard (measuring equipment).

All equipment for collection of environmental data was satisfactorily cleaned and in good condition. The equipment was subject to applicable control routines for West Navigator. Maintenance is carried out by the technical personnel on board West Navigator.