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Audit of cranes on Port Rigmar

During the period 25-29 August, the Norwegian Petroleum Directorate conducted an audit of the cranes on Port Rigmar, owned by Ocean Rig AS. The Port Rigmar living quarters platform (photo) was built in 1979 and has been hired in by operating companies on the Norwegian shelf on several occasions. The existing offshore cranes of the "Sea King" type were installed on board the platform around 1991.


Background for the audit

In BP's application for consent for use dated 7 May 2002, as well as in the subsequent documentation, many regulatory non-conformities were noted for the cranes, both technical non-conformities and non-conformities with the regulatory requirements for documentation.

In the consent for use granted 14 July 2002, exceptions were granted for most of the non-conformities for the duration of the period of the consent. During this period, Ocean Rig has implemented a number of measures to close these deviations.

Upon a new application for consent for use of the Port Rigmar dated 28 May 2003, most of these non-conformities were closed. In connection with the processing of this application, the NPD decided to carry out an audit and a verification of the offshore cranes on board the Port Rigmar.

Notification of the audit was given in the consent for use dated 14 July 2003. The consultancy firm Axess AS was hired to assist the NPD in the verification of the cranes.

Purpose of the audit

· Carry out verifications of the modifications made on the offshore cranes.
· Technical verification measured against the Norwegian Maritime Directorate's regulations relating to deck cranes on mobile installations.
· Verify that operational conditions are based on requirements in the NPD's regulations and Norsok R-003.
· Verify that the working environment in the crane driver's cabins is in accordance with the NPD's regulations.
· Verification of lifting gear used with the offshore cranes, as well as storage and inspection procedures for such gear.

Result of the audit

The cranes emerged as being in good condition in terms of structure. When the cranes were operated, they exhibited smooth, controlled movement and appeared to be easy to operate. The cranes are not used very often.

Labeling of control levers, switches, valves, instruments and other equipment was deficient. The manual emergency release switch must be moved.

Access to the cranes was not in accordance with the current regulations, and this should be improved by installing walkways.

The starboard crane is too small, cf. Section 3 of the Framework Regulations and the Norwegian Maritime Directorate's requirements for offshore cranes used for loading and unloading supply ships.