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Report following the PSA’s investigation of injurious incident on Troll A

The Petroleum Safety Authority Norway (PSA) has concluded its investigation of the incident on Troll A that took place on Thursday, 18 September 2008. One person was injured in connection with a lifting operation. The person was struck by a steel beam which came off as some equipment was being removed by crane. Based on our findings during the investigation, we have issued a notification of order to StatoilHydro (SH) and Aibel AS (Aibel).


The incident had major injury potential. The PSA sent an investigation team to the facility. We also assisted the Police in their investigation of the incident.


 Troll A (kilde: StatoilHydro)

Troll A (source: StatoilHydro)

 

One person was hurt when an offshore crane was used to remove a steel beam. The person suffered injuries to his left hip and thigh, as well as to his right leg. He was sent ashore from Troll A on an SAR helicopter for further examination and treatment at the hospital.

The incident took place during dismantling of an approximately 335 kg steel beam which was being used as a cradle for the crane boom. The cradle was welded onto a steel frame.

Due to the design of the structure, not all of the weld was removed using an angle grinder. The offshore crane was used to break away the last bit of the weld. As the cradle came off, it fell down and hit a flagman in the left hip, thigh and right leg.

Our general impression from the investigation is that the lifting incident bears evidence of insufficient organisation and planning, insufficient understanding of the risk involved, as well as incorrect use of the offshore crane.

The investigation revealed several nonconformances in relation to regulatory requirements, cf. Chapter 5 of the report (link box on the right), and we have issued the following notification of order to SH:

Pursuant to Section 58 of the Framework Regulations relating to individual decisions, cf. Section 3 of the Management Regulations relating to management of health, environment and safety, Section 5 of the Framework Regulations relating to responsibility and Section 14 relating to qualification and follow-up of other participants, as well as Section 83 of the Activities Regulations relating to lifting operations, we order StatoilHydro to secure prudent planning and execution of crane and lifting operations during modification projects, including qualification and follow-up of contractors, roles, responsibilities and competence.

A binding plan and schedule for implementing the order must be established by 3 April 2009.  We must be notified when the order has been complied with.

We have issued the following notification of order to Aibel:

Pursuant to Section 58 of the Framework Regulations relating to individual decisions, cf. Section 3 of the Management Regulations relating to management of health, environment and safety, Section 5 of the Framework Regulations relating to responsibility and Section 83 of the Activities Regulations relating to lifting operations, we order Aibel to ensure prudent planning and execution of crane and lifting operations during modification projects, including clarification of roles, responsibilities and competence, and processes for risk identification and handling.

A binding plan and schedule for implementing the order must be established by 3 April 2009.  We must be notified when the order has been complied with.

We have asked SH and Aibel for any comments on the notifications by 13 March 2009.

The report contains proven nonconformances in addition to those that form the basis for the notification of order and we have asked the companies to account for how these nonconformances will be handled.
Furthermore, the report contains observations of items with potential for improvement, and we have asked for the companies’ assessment of these items.