Aasta Hansteen, Norway

ProjectPipe End Measurement
Written By Katherine Aiken

OMS was contracted to provide remote measurement and inspection of 230m-long pull tubes for the deep-water Aasta Hansteen SPAR project, which at 1,300m below sea level was the first of its kind in the Norwegian Sea and the largest such structure built to date. The platform’s size and challenging location meant that detailed inspection was vital before installation because pipe and weld defects could not be remedied once the platform was positioned at sea. OMS crawlers were deployed to inspect pull tubes and caissons, assessing pipe ovality, HiLo misalignment and weld root penetration before repair through grinding was carried out.

Project experience includes:

  • Pipe-end measurement

  • Inspection of 230m-long pull tubes and caissons with OMS robotic crawlers

  • Assessment of pipe ovality, HiLo and weld root penetration

  • Detailed digital reporting of pipe and weld condition

Katherine Aiken
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Laggan and Tormore, Scotland