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Audit of load-bearing structures, maritime systems and risers - Aasta Hansteen

On 10 and 11 September 2013, the PSA conducted an audit of Statoil's development of the Aasta Hansteen field. The audit was focused on load-bearing structures, maritime systems and risers.


The PSA has performed an audit of Statoil's detailed engineering of the hull and risers for the Aasta Hansteen FPSO. The audit was conducted through meetings and discussion at the premises of Technip (the engineering services supplier) at Houston, Texas on 10 and 11 September 2013.

Background
The audit is primarily linked to the PSA's main priority area of barriers.

The Aasta Hansteen project is of great strategic significance for the future development of infrastructure in the north of the Norwegian Sea.

This is the deepest field development to date on the Norwegian Continental Shelf, it involves new technology for Statoil and the NCS with a SPAR facility combined with steel risers, and it involves a number of areas of technological qualification.

Objective
The objective of the audit is to monitor that the project has been planned and that detailed engineering has been carried out in compliance with applicable regulations and recognised norms, and that relevant requirements in the HSE regulations are provided for.

Results
The topic of the audit was to follow up the documentation associated with the detailed engineering of the hull (SPAR), risers, anchoring system and stability of the Aasta Hansteen facility, based on:

  • the Facilities Regulations, section 11 on loads/actions, load/action effects and resistance,
  • the Facilities Regulations, section 56 on load-bearing structures and maritime systems,
  • the Facilities Regulations, section 57 on pipeline systems,
  • the Facilities Regulations, section 9 on qualification and use of new technology and new methods, including associated guidelines and standards.

The results derive from meetings, discussions, presentations, verification and document reviews with Technip and Statoil's organisation in Houston.

The audit identified one non-conformity in respect of the petroleum regulations. The non-conformity concerns requirements relating to the ballast system.

An area with potential for improvement, associated with follow up of verification activities was also identified.

Øyvind Midttun, Press contact
Email: oyvind.midttun@ptil.no | +47 51 87 34 77