World's Longest Offshore LNG Pipe – Divers Ready

By Vessels

The longest offshore LNG Pipe - ‘Skandi Arctic’ is gettin ready to weld together the largest export gas pipe on the seabed that has been ever built.
The huge Nord Stream pipe, with 2 identical-sized parallel ones, runs from Vyborg in Russia through the Gulf of Finland and the Baltic Sea to Lumina in Germany.
It is going to be able to provide deliveries of electricity and heat to 26 m. households in Europe for fifty years to come. The LNG pipe is long 1,224 kilometre (almost 760 n.m.) is currently situated on the bottom in 3 lengths. Norwegian subsea expertise is going to be called upon to be welded together the lengths of pipe on the seabed.
The LNG gas pipes’ diameters are nearly forty eight inches, thereby making it larger than any other one placed on the seabed to date.
Lifting the huge pipe sections with precision, which is going to be precisely cut and welded along with only a few millimetres clearance for the welding skate, that requires severe special equipment, that is presently packed and maintained at Statoil’s Pipeline Repair System (PRS) which is based in Haugesund. From that place, a significant volume of equipment, a few of it severe for the welding job at depths of eighty and one hundred and ten metres (about 260 and 360 feet), is going to be loaded onto the ‘Skandi Arctic’.
The people, that are going to work from within distinct pressure chambers in 3 to 4 weeks at a time, is going to need to descend onto the seabed to prepare the equipment for the welding action.
They are also going to be indispensable to stay down there in the deep during the remote-controlled welding machine carries out its 360-degree job around the circumference of the pipe.
With nearly 400 tons of equipment and 140 staff onboard, the ‘Skandi Arctic’ is going to set sail from Haugesund for the Baltic Sea. This is the 1st vessel in a new generation of diving ships where observing of all life maintenance systems for divers in the chamber or in the deep is operated and monitored by computers.
On the seabed, a diver is going to be able to install a little workshop closely connected to the welding skate among the lengths of pipes. Seawater is going then to be pressed out so that divers might work in ordinary working equips without a diving suit. Welding is also going to take place on dry pipes.
The whole job is being expected to finish for nearly 2 months.