DNVGL-CG-0136

Liquefied gas carriers with membrane tanks

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Organization: DNVGL
Publication Date: 1 July 2017
Status: active
Page Count: 39
scope:

Introduction

Objective

This class guideline describes procedures for strength assessment of liquefied gas carriers with membrane tanks in compliance with the rules DNVGL-RU-SHIP Pt.5 Ch.7. In case of discrepancy between the rules DNVGL-RU-SHIP Pt.5 Ch.7 and this class guideline, the rules shall prevail.

In general liquefied gas carriers with membrane tanks shall satisfy the strength criteria to main class as given in DNVGL-RU-SHIP Pt.3 of the rules. In addition, the criteria for classification notation Tanker for liquefied gas as given in DNVGL-RU-SHIP Pt.5 Ch.7 apply for the inner hull acting as support for the cargo tank insulation and the membranes. An overview of the ultimate limit state (ULS) and fatigue limit state (FLS) assessment is shown in Figure 1.

US coast guard requirement

Requirements given by the USCG, see Sec.9 [1], need to be considered for LNG vessels trading to US ports or operating under US flag.

Document History

DNVGL-CG-0136
July 1, 2017
Liquefied gas carriers with membrane tanks
Introduction Objective This class guideline describes procedures for strength assessment of liquefied gas carriers with membrane tanks in compliance with the rules DNVGL-RU-SHIP Pt.5 Ch.7. In case...
October 1, 2015
Liquefied gas carriers with membrane tanks
Objective This class guideline describes procedures for strength assessment of liquefied gas carriers with membrane tanks in compliance with the rules RU SHIP Pt.5 Ch.7. In case of discrepancy...
October 1, 2015
Liquefied gas carriers with membrane tanks
A description is not available for this item.

References

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