Spiral Generation for Automated LNG Ship Insulation (eBook)

Published Date

January 1976

Spiral Generation for Automated LNG Ship Insulation (eBook)

$20.04
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This paper describes the development of the Spiral Generation technique for cryogenic insulation. (18pp)

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The development of the Spiral Generation technique for cryogenic insulation was initiated by an inquiry from the Moss Rosenberg shipyard to A/S Teknisk Isolering in 1969 for an insulation system to be implemented in their LNG carrier design. It soon became evident that LNG insulation was by no means a traditional task.

A conventional panel system would require a vast number of men working on the sphere, gluing, foaming in place or working up the insulation surface by hand and provide an almost impossible quality control task — resulting in reduced long-term reliability. A/S Teknisk Isolering decided this was an area where automation would be of immense help. In 1970 a cooperative programme with The Dow Chemical Company based upon the use of Dow's Spiral Generation technique was started. This technique had long been in use making insulated domes for warehousing, halls, and general protective covers. Det Norske Veritas, the Institute for Kjøleteknikk, Norges Tekniske Høgskole, Trondheim, Norway, and others, were contacted and a practical project begun.

Early developments looked so promising that even without contracts A/S Teknisk Isolering took a license from The Dow Chemical Company and ordered insulation equipment. The progressive attitude of Moss Rosenberg Verft (MRV) soon resulted in orders for two vessels and later another three. The Norman Lady, LNG Challenger, Hilli (Fig. 1.1), and by the time of this conference, also Hull #199 at MRV will have been insulated by the Spiral Generation technique. All the vessels built have been successfully tested with LNG and will soon go into service. This trade experience will be the final test of the system — a system which truly applies the benefits of automated mass production and statistical control to greatly enhance long-term reliability so important in any LNG project.

Paper Delivered by:
HS Smith (Dow Chemical Co, USA)
E Ekker & S. Falck-Pedersen (A/S Teknisk Isolering, Norway)

Prepared for:
Gastech New York 1976

For over 45 years, the Gastech Exhibition & Conference has been at the forefront of the international gas and LNG market. This world-renowned event is regarded as the most significant meeting place for gas and LNG professionals, where the global industry gathers to do business.

Gastech hosts major IOCs, NOC’s, global utility companies, EPC contractors, shipbuilders, pipeline companies, manufacturers, distributors, technology and service providers, all who play an active role in the global energy value chain.

Title: Spiral Generation for Automated LNG Ship Insulation (eBook)
Product Code: 4433g051
Published Date: January 1976

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