Spiral Generation for Automated LNG Ship Insulation (eBook)

Published Date

January 1976

Spiral Generation for Automated LNG Ship Insulation (eBook)

(Excludes any applicable taxes)

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

Be the first to review this product

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

Bought this product? Why not review it?

If you have a question about this product, please contact us directly.

Windows eBooks:


To access the eBook, you need to install our free Windows eBook Reader.

The application can be downloaded from:



Standalone eBooks are supplied with 1 licence + 1 backup and are not transferable between platforms.


Remote Desktop Services (Terminal Services) and virtual environments are not supported.


The Windows eBook Reader works with Windows XP or later OS (but not Windows RT).

See more details.


Cloud (online) eBooks:


The Cloud (online) eBooks use Microsoft Silverlight browser plugin to deliver the best possible reading experience with the ability to work in offline mode.


It is an annual subscription service (i.e. each eBook is purchased for 1 year of use).

Online licences are not transferrable to Windows or iPad (or vice-versa).


Silverlight is compatible with the major web browsers used on Windows and Mac OS X operating systems.

However it is not supported on Linux, Android, Windows RT and iPad devices and therefore the Cloud eBooks use an HTML site in these instances.

The HTML site is more restricted than the Silverlight version.


See https://www.microsoft.com/silverlight/what-is-silverlight and more details.


Note for Mac Users:


Mac users can read Windows eBooks with Boot Camp or using virtual machines such as Parallels Desktop, Virtual Box, ...

Alternatively, Cloud (online) eBooks are accessible on Mac, including the Silverlight plugin with offline mode.


Note for Linux Users:


Linux users can read Windows eBooks using a virtual PC.

Alternatively, the HTML version of the Cloud (online) eBooks is accessible.


Note for Tablet Users:


Tablets owners can use the HTML version of the Cloud (online) eBooks.