Sloshing load and response in LNG carriers for new designs, new operations and new trades (eBook)

Published Date

January 2005

Sloshing load and response in LNG carriers for new designs, new operations and new trades (eBook)

(Excludes any applicable taxes)

In this paper, DNV presents its research and development work on LNG sloshing. (34pp)

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An increasing interest for spot market trading is evolving, which demands a greater flexibility of cargo tank fillings. For new trades crossing the North Atlantic, the environmental conditions encountered by LNG carriers are significantly more severe then on currently operated routes. Because of these changes the sloshing of LNG in membrane cargo tanks is one of the issues that needs to be addressed.

The safe development of new carriers and the introduction of new operational patterns is a prime concern for Class Societies and requires the development of new competence,knowledge and tools in order to assist the industry to manage the associated risks of the anticipated changes. DNV is actively supporting the LNG shipping industry with dedicated research and development work on LNG sloshing, some of which is presented in this paper.

With in-house sloshing model experiments the effects of partially filling, sea state severity and other aspects are studied. Both numerical and experimental structural studies are conducted to assess the structural strength of the various cargo containment systems as well the supporting hull structure. This key competence on the LNG sloshing load and response problem is used to develop rules and guidelines for the industry for safe design assessment of LNG ships. An important next step is proposed for this R&D program is a full scale sloshing measurement campaign onboard an LNG carrier. The main objective is to provide the necessary verification of a sloshing load and response guideline in order to be able to assess the absolute strength of cargo containment and hull structure.

Paper Delivered by:
Wouter Pastoor
Tom Klungseth Østvold
Eirik Byklum
Sverre Valsgård
(all from Det Norske Veritas AS Norway)

Prepared for:
Gastech Bilbao 2005

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: Sloshing load and response in LNG carriers for new designs, new operations and new trades (eBook)
Product Code: 4433g089
Published Date: January 2005

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