Aker Solutions are the pioneer in constructing the drilling platforms. In 1971 Aker signed the first contract to build drilling platforms based on the project of their own authorship, which is the most successful model of the half-submersible drilling platform. Aker built 37 H3 and H4 units . Their success gave base to construct the half-submersible H6e drilling platform , which is the most modern one in the world and it is adapted to work in the very heavy weather conditions . In 2005 Aker Drilling company was created as a part of Aker Group ,and its main point was to build two sister platforms of sixth generation type H6e : Alfa Spitsbergen and Beta Barents. Both platforms were built in Aker Solutions shipyard in Stord. The workers recruited by us for Fosdalen AS worked in several mounting-welding groups, their job was concerned mainly the pipeline assembly and welding the casing of devices and installations of pipelines of various types; the diameters of which ranged from 20-600 mm and the thickness from 2.8-30 mm , the materials were : carbon steel, alloy steel, and stainless steel dupleź super duplex, 6Mo. The parts of the platforms made by them were tested with RTG, ultrasonography as well as with magnetic and water pressure tests.