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Oil, Gas, Petrochemical Industry News
News Release from: Scott Bader Company | Subject: Crystic Crestomer Advantage 30
Edited by the Processingtalk Editorial
Team on 18 January 2007
Adhesives help upgrade GEF-40 lifeboats
on site
Crystic Crestomer Advantage 30, a high performance structural adhesive, has been used by Norsafe AS to upgrade their GEF-40 (gravity escape free-fall) lifeboats to the latest safety specifications
Crystic Crestomer Advantage 30, a high performance structural adhesive for large component bonding has been used by Norsafe AS to upgrade their GEF-40 (gravity escape free-fall) lifeboats to the highest safety specifications now required by OLF - The Norwegian Oil Industry Association Crestomer Advantage 30 is manufactured by the Scott Bader Company, as part of a range of technically superior composites products including unsaturated polyester resins, gelcoats, vinyl esters and adhesives etc
This article was originally published on Processingtalk on 2 Jun 2008 at 8.00am (UK)
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All Norsafe boats and associated equipment are approved in accordance with Solas 1983/96 and subsequent amendments, and EC labelled in accordance with the Marine Equipment Directive.
Their GEF-40 lifeboats have also been successfully tested to withstand launch drops of up to 37.5 metres.
However, during 2005 competitors craft have failed tests from an offshore platform with the boats collapsing when hitting the water from a free-fall drop of only 27 metres.
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This was despite these boats having been supplied as approved for a drop of 36 metres.
Investigations concluded that no full-scale drop tests had been performed on the competitors craft, and a second test also resulted in a similar failure for this manufacturer.
As a result of these structural failures, OLF is advising new criteria for the construction of all free-fall lifeboats used in the North Sea.
Due to these regulations, Norsafe are strengthening the construction of their products, including up to 65 boats already delivered, with the remedial work to be completed by 1st October 2006.
This work involves the incorporation of strengthening beams of Vinylester plus Carbonfibre being bonded with Crestomer Advantage 30 to both the hull and the roof structures.
The work is being undertaken on site, while the boats are held at a 35deg angle on their launch platforms.
Full scale drop tests on the Norsafe upgraded craft have been successfully carried out at 22, 27, 32 and 35 metres, with very little flexing of the boat and no cracking being found in the Crestomer joints of the reinforcement beams.
Crestomer Advantage 30 adhesive is white and non-sagging with controlled gel and exotherm characteristics particularly suitable for marine applications.
It is based upon Scott Bader innovative urethane acrylate technology, exhibiting exceptional impact strength and toughness and useable over a temperature range of 5-30C.
Excellent adhesion and gap filling with a wide range of substrates, combined with minimum surface preparation, low odour plus the practicality of Crestomer Advantage 30 being in 380ml cartridges for hand gun application made it an ideal choice for the work undertaken in the confined and difficult working conditions of an offshore platform lifeboat.
Crystic Crestomer is also available in 25kg kegs and 225kg drums for use with bulk dispensing equipment, covering a range of products specifically designed for different structural applications.
Kjell Soerensen, Vice President - Sales and Marketing for Norsafe comments: "Norsafe is more than satisfied with the performance of the Crestomer Advantage 30, which has proven to work as specified.
As all upgrading is being carried out offshore within a very strict time schedule, it was of great importance that the bonding material fulfilled all the technical requirements, including providing all the required flexibility during use.
Crestomer Advantage 30 has shown to be the best solution for this project.
We would also like to thank Scott Bader Scandinavia AB for excellent service during the project".
The Norsafe AS company manufacture a range of rescue craft including both conventional and free-fall launched lifeboats as well as davits, designed for the rapid evacuation in emergency situations of ships and offshore installations.
Boat structures are robust enough to withstand high winds, powerful waves, extreme weather and even free-fall launch impact stresses and consequential total immersion conditions.
Up to 90 passengers can be carried safely in enclosed cabins, while securely strapped to anatomically shaped seats.
The boats can also be fitted with water spray and compressed air systems for protection against fire.
Further information on the full range of Crystic Crestomer structural adhesive products for a wide range of composites marine applications in hull and deck construction is available from Scott Bader.
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