Safety body inspects Haven accommodation rig upgrade

  • Exploration & Production

Norway’s offshore safety body, the Petroleum Safety Authority (PSA), has found one improvement point during an audit of Statoil and its works on the Johan Sverdrup-bound Haven accommodation jack-up rig.

Haven is a 2011-built, 4-legged self-elevating multi-purpose unit built for the North Sea harsh environment. The rig is owned by Jacktel, a wholly owned subsidiary of a provider of accommodation services, Master Marine.

The rig was contracted in 2015 by the Norwegian oil and gas company Statoil for use on the Johan Sverdrup field, in the North Sea offshore Norway.

The contract for work on the field will have a duration of 18 months and is planned to begin on June 15, 2018, with five two-month extension options.

Since Haven is certified for use in water up to 83 meters deep, using it on the Johan Sverdrup deepwater field entails a considerable lengthening of the legs and the requirement for a different type of foundation (suction anchors).

The contract for the procurement, construction, and installation of extended legs and new suction caissons was awarded to Lamprell in September last year, with plans to fabricate the components in Lamprell’s Hamriyah yard in the United Arab Emirates. After the fabrication is done, Lamprell will transport the components to Norway where they will be installed on the Haven unit in collaboration with local Norwegian construction service provider, Coast Centre Base. The works are scheduled to complete in 2Q 2018.

According to current AIS data, the Haven rig is currently moored in Arendal. The PSA said the rig will be moved to CCB Ågotnes for modification work in December 2017.

On February 1 and 2, the PSA carried out an audit of Statoil in connection with the extension of Haven’s legs, new foundations, and site-specific analyses of the load-bearing structures.

The PSA said on Tuesday that the objective of the audit was to perform spot checks of whether the project engineering of the jack-up complied with applicable regulations.

The only noted improvement point was connected the use of Statoil’s FAR values as acceptance criteria for risks.

Offshore Energy Today Staff

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