Large Diameter Synthetic Certified by Lloyd's

Tuesday, June 15, 2010

Samson, provider of performance cordage, and Endenburg BV, Samson’s Master Fabricating Distributor in Europe, has provided Seaway Heavy Lifting (SHL) with the first very large diameter synthetic rope slings certified by Lloyd’s for offshore installations. The two lifting systems, made from 144-mm diameter AmSteel-Blue, Samson’s rope made with 100% Dyneema high modulus polyethylene fiber, are currently assisting in the installation of 140 turbine foundation monopiles as a part of the North Sea’s Greater Gabbard project, the largest wind farm currently under construction.

SHL anticipated that synthetic slings would reduce potential damage to the monopiles during their transfer from the supply barge to the deck of the installation vessel in rough seas. Each monopile weights from 519 to 676 metric tons. SHL chose to use braided rope slings over traditional woven round slings because strengths of up to 4,457 metric tons could be achieved, and because these slings have a removable jacket they are easy to inspect, repair, and splice on site. Another factor in SHL’s decision to use rope slings was that they could be fabricated in longer continuous lengths than round slings.

The very large diameter rope was manufactured at Samson’s Lafayette, La., plant. Subsequent break testing confirmed that the rope exceeded the strengths required for the job. Endenberg then fabricated the slings and grommets, with all weight-bearing points protected by chafe gear. Upon delivery, these became the first very large diameter synthetic rope slings certified by Lloyd’s for multiple uses in offshore installations.

By the end of February 2010, 67 of the 140 turbine foundation monopiles had been installed. Of the two lifting systems fabricated, the first is still in use and shows no sign of wear according to Endenberg's master splicer, who has conducted two inspections. These inspections included removing the jacket and closely examining the entire line for wear and damage. Lloyd’s also proof loaded the line and recertified it for continued use. Through this process, it was determined that the original set of slings could be used for the remainder of the installations, with the second set held as backup.
 

Maritime Reporter January 2015 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

People & Company News

Matson Announces Quarterly Dividend

Matson, Inc. declared a first quarter dividend of $0.17 per common share, the company’s board of directors announced. The dividend will be paid on March 5, 2015

Hogan Named VP at Newport News Shipbuilding

Rob Hogan has been appointed vice president of manufacturing at the Newport News Shipbuilding division of Huntington Ingalls Industries (HII), the company announced.

Kongsberg Expands Louisiana Office, Training Facility

Kongsberg Maritime has purchased approximately 5.2 acres for new construction on an 82,980 sq ft office and training facility. Construction on the James Business

 
 
Maritime Contracts Maritime Standards Offshore Oil Pipelines Pod Propulsion Port Authority Salvage Ship Electronics Shipbuilding / Vessel Construction Winch
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: 0.1997 sec (5 req/sec)