GTT’s new LR-approved NO96 criteria expand LNG carrier design flexibility
French technological containment specialist Gaztransport & Technigaz (GTT) has secured the green light from the UK-based classification society Lloyd’s Register (LR) for new NO96 elongation criteria, opening the door to more optimized liquefied natural gas (LNG) carrier (LNGC) structures, widening LNG ship design flexibility.
Lloyd’s Register has issued an approval in principle (AiP) to GTT for new elongation criteria applicable to LNG carrier hulls fitted with the NO96 cargo containment system, confirming that the revised criteria governing allowable hull deformation beneath the NO96 membrane and insulation system meet LR’s classification requirements and relevant international regulations.
The assessment covered operational, thermal and hull-induced loads to ensure continued structural integrity of the containment system. The revised elongation criteria, developed as part of the French player’s ongoing innovation program, are intended to give designers greater flexibility in hull structural design while maintaining established stress limits, fatigue margins and membrane performance.
Constantinos Chaelis, Global Gas Segment Director at Lloyd’s Register, commented: “This approval is
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