BP has noted that the two main templates for the jacket of the new Valhall platform have now been rolled-up at Aker Solution's construction yard in Verdal. Both weigh almost 2,500 tonnes.
It took five large cranes to carry out the complex lifting operation, and 36 working hours were spent rolling up each of the templates. The work now continues on getting rows 1 and 3 with risers and caissons in place.
The jacket will be 108 meters high in total, measuring 42 by 20 meters at the top and 42 by 42 meters at the bottom. The full weight will be 6800 tonnes, and it is designed to carry a weight of 24,000 tonnes. Six risers, ten utility caissons and three J-tubes have been pre-installed.
The substructure has been designed by Aker Jacket Technology at Lysaker in Oslo, the steel has been purchased from Dillenger Hutte in Germany and the fabrication and rolling and pre-fabrication has been carried out by the Dutch company SIF. The jacket will be installed on the field by Saipem next summer.
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