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Audit of the working environment and electrical systems on Stena Dee

During the period 30 - 31 March 2004 the Petroleum Safety Authority Norway (PSA) conducted an audit on the mobile installation Stena Dee. The audit was a verification concerning physical/technical working environment conditions and electrical systems.


The audit was conducted while the installation was in the yard in Rotterdam.

Background for the audit

The audit was part of the PSA's processing of Stena Drilling Ltd's application for an Acknowledgement of Compliance (AoC) for Stena Dee.

Purpose of the audit

The purpose of the audit was to verify whether selected physical/technical working environment conditions and electrical systems were in compliance with the regulatory requirements.
The goal was also to evaluate the quality of the verification work Stena Drilling had performed itself to measure compliance with the regulatory requirements, and which is part of the basis for the submitted application for an AoC.

Result of the audit

Working environment

The audit uncovered a need for Stena Drilling to conduct a more systematic review and compliance measurement of physical/technical working environment conditions related to the installation and the company's management systems for follow-up of working environment requirements.
During the audit a number of new deviations were uncovered that had not previously been addressed in connection with the submitted application for AoC.
Stena Drilling needs to implement several working environment surveys and document the results of these surveys in a better manner. This is necessary to achieve a sufficient overview of compliance with working environment requirements in the individual areas on the installation.
In general, the working environment conditions can be said to be stressful as the individual workplaces have not been designed with a view towards ensuring effective and good working environment conditions.
We can mention the layout of and obstructions in access ways that complicate effective handling of equipment with technical aids, which contributes to increased physical working strain for the personnel.
Several areas have noise levels that are above the regulatory requirements' recommended limit values, which may lead to challenges with a view towards avoiding situations where personnel are subjected to noise exposure that can be injurious to health during the work shift.
Poor lighting in some areas, ladders that lack self-locking gates, and equipment and work operations with a risk of chemical exposure for personnel are other challenges.
It is positive, however, that the planned and implemented modifications will contribute to raising the working environment standard on the installation.

Electrical system

The electrical system shows signs of being 20 years old, but its condition seems to be acceptable. The greatest improvement potential actually lies in improving orderliness and tidiness in rooms that contain important electrical equipment.
It is not evident whether measurement of the electrical equipment has been conducted which is in compliance with Det norske Veritas' Offshore Standard, which is mentioned as a norm in the AoC application.

Contact person in the PSA:
Mike Theiss