World's Longest Offshore LNG Pipe – Divers Ready

Stavanger Aftenblad
Friday, June 01, 2012
Skandi Arctic: Photo credit DOF Subsea

‘Skandi Arctic’ is preparing to weld together the largest export gas pipe on the seabed ever built

The gigantic Nord Stream pipe, with two same-sized parallel ones, runs from Vyborg in Russia through the Gulf of Finland and the Baltic Sea to Lumina in Germany.
It will be able to secure supplies of electricity and heat to 26 million households in Europe for 50 years to come. The 1,224 kilometre-long pipe (approximately 760 miles) is currently located on the bottom in three lengths. Norwegian subsea expertise will be called upon to weld together the lengths of pipe on the seabed.

The gas pipes’ diameters are 48 inches, thus making it larger than any other one placed on the seabed to date.

Lifting the gigantic pipe sections with precision, which will be precisely cut and welded together with only a few millimetres clearance for the welding skate, requires heavy special equipment, which is currently stored and maintained at Statoil’s Pipeline Repair System (PRS) base in Haugesund. From there, a considerable amount of equipment, some of it heavy, for the welding job at depths of 80 and 110 metres (about 260 and 360 feet), will be loaded onto the ‘Skandi Arctic’.

The divers, who will work from within different pressure chambers in three to four weeks at a time, will have to descend onto the seabed to prepare the equipment for the welding operation.
They will also be required to stay down there in the deep whilst the remote-controlled welding machine carries out its 360-degree job around the circumference of the pipe.

With almost 400 tons of equipment and 140 people on board, the ‘Skandi Arctic’ will set sail from Haugesund for the Baltic Sea. This is the first ship in a new generation of diving vessels where monitoring of all life support systems for divers in the chamber or in the deep is managed and monitored by computers.

On the seabed, a diver will be able to install a small workshop tightly connected to the welding skate between the lengths of pipes. Seawater will then be pressed out so that divers can work in ordinary working clothes without a diving suit. Welding will also take place on dry pipes.

The entire job is expected to last for almost two months.

 

Maritime Reporter August 2014 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Technology

Last Call to Register for SHIPPINGInsight

Maritime industry conference and exhibition opens next week in Stamford, Conn. There’s still time to register online for SHIPPINGInsight 2014, the North American

Boeing, Liquid Robotics Enter Maritime Surveillance Partnership

Boeing and Liquid Robotics signed a global, multiyear teaming agreement for collaboration on product development, maritime services and operational deployments.

BMT Nigel Gee To Launch Project L3 at Monaco Yacht Show

BMT Nigel Gee, a subsidiary of the BMT Group, will be launching its latest innovative design, ‘Project L3’ at the Monaco Yacht Show. Building on Nigel Gee’s

Offshore

Hyde Guardian BWTS for Edison Chouest Fleet

Hyde Marine, Inc., a wholly owned subsidiary of Calgon Carbon Corporation, has been selected as a strategic supply partner for ballast water treatment (BWT) systems

Rosneft, ExxonMobil Continue Drilling for Now

Russia's Rosneft and U.S. ExxonMobil are continuing to drill in the Kara Sea and plan to stop work by Oct. 10, Russian Deputy Energy Minister Kirill Molodtsov said on Tuesday.

Aberdeen Harbour Installs Siklu Security Network

Aberdeen Harbour has extended its security solutions coverage using high-capacity backhaul from Siklu, the market leader in millimeter wave backhaul informs the Israel-based tech firm.

Energy

Last Call to Register for SHIPPINGInsight

Maritime industry conference and exhibition opens next week in Stamford, Conn. There’s still time to register online for SHIPPINGInsight 2014, the North American

Suncor Sends First Tanker of Western Canada Heavy Crude to Europe

Canada's largest oil and gas producer, Suncor Energy Inc, is shipping its first ever tanker of Western Canadian heavy crude from Canada's East Coast to Europe, a company spokeswoman said on Tuesday.

Pivotal to Deliver LNG to Carib for use in Puerto Rico

Pivotal LNG, Inc., a subsidiary of AGL Resources, announced this week a long-term agreement to sell liquefied natural gas (LNG) to Crowley Maritime Corp. subsidiary Carib Energy LLC (Carib).

LNG

Last Call to Register for SHIPPINGInsight

Maritime industry conference and exhibition opens next week in Stamford, Conn. There’s still time to register online for SHIPPINGInsight 2014, the North American

Pivotal to Deliver LNG to Carib for use in Puerto Rico

Pivotal LNG, Inc., a subsidiary of AGL Resources, announced this week a long-term agreement to sell liquefied natural gas (LNG) to Crowley Maritime Corp. subsidiary Carib Energy LLC (Carib).

Sir Frank Chapman Appointed Golar's Chairman

Golar LNG Limited announced that with effect from September 19, 2014, Sir Frank Joseph Chapman has been appointed to the Board of Directors of the Company and will act as the Company's Chairman.

Vessels

Steel Cut on First of Three ISVs for KT Maritime

A steel cutting ceremony held last week at the Singapore shipyard of partner company, ASL Shipyard Pte Ltd. marked the start of construction for the first of three

Innovative Thrawls Help Reduce the Enviromental Impact

Fishing Company Cornelis Vrolijk, based in IJmuiden, The Netherlands, and its subsidiary Jaczon, based in Scheveningen, The Netherlands, are specialized in pelagic fishing.

Two More Damen Twin Axe Catamarans for SeaZip

Damen Shipyards and SeaZip Offshore Service signed another contract for two Damen Fast Crew Suppliers (FCS) 2610 at Wind Energy in Hamburg. The two new vessels,

 
 
Maritime Careers / Shipboard Positions Maritime Contracts Maritime Security Maritime Standards Pod Propulsion Salvage Ship Electronics Ship Repair Shipbuilding / Vessel Construction Sonar
rss | archive | history | articles | privacy | terms and conditions | contributors | top maritime news | about us | copyright | maritime magazines
maritime security news | shipbuilding news | maritime industry | shipping news | maritime reporting | workboats news | ship design | maritime business

Time taken: 0.1772 sec (6 req/sec)