A Study of the Tank Systems of an 125,000 m3 MRV Type LNG Carrier (Loads and Stress Analysis) (eBook)

Published Date

January 1981

A Study of the Tank Systems of an 125,000 m3 MRV Type LNG Carrier (Loads and Stress Analysis) (eBook)

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This paper summarises the results of studies on the ship's motion, wave load and the stress in the hull and tank system (40pp)

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A 125,000 m3 Moss Rosenberg Verft (MRV) type liquefied natural gas carrier (LNG carrier) is now being designed and constructed at Nagasaki Shipyard and Engine Works of Mitsubishi Heavy Industries Ltd (MHI). It is the first of its kind to be built by the Works. The ship, scheduled to be completed and delivered to her owner in January 1983, is for the Indonesia-Japan LNG service. Another similar LNG carrier has been contracted. After comprehensive and thorough comparative studies of various types of LNG carriers, MHI entered into a technical agreement with MRV in 1971 and a few of other licensers. MRV type tank system was developed by MRV and DNV (Det Norske Veritas) after a large amount of the theoretical and experimental investigations.

Before commencing the design work on the ship, we carefully studied the voluminous MRV-DNV research data, and also carried out a considerable amount of theoretical and experimental investigation on hull form, tank system, cargo handling and construction method to establish our own design procedure and ensure the safety of the ship by ourselves. This work represents an investment of approximately one thousand million yen.

The Moss Rosenberg spherical LNG containment system, defined as an independent Type ? tank stipulated by Intergovermental Maritime Consultative Organization (IMCO) Resolution, may reduce the secondary barrier provided its structural safety is established through detailed stress analyses and "leak before failure" concept.

This paper, the first of a series of presentations, deals with the results of studies on ship motion, wave load and stress in the hull and tank system. In view of the extensive nature of the research work performed in these fields, this presentation is given in outline only.

Paper delivered by:
Dr Nagomoto
M Ushijima
D Sakai
K Hagiwara
T Takahashi
Y Kuramoto
(all of Mitsubishi Heavy Industries Ltd, Japan)

Prepared for: Gastech Hamburg 1981

Title: A Study of the Tank Systems of an 125,000 m3 MRV Type LNG Carrier (Loads and Stress Analysis) (eBook)
Product Code: 4433g168
Published Date: January 1981

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