CONTENTS
Changes–current.................................................................................................. 3
Section1General....................................................................................................6
1Introduction.........................................................................................6
2MembranetypeLNGtanks.................................................................12
3Purposeofthisdocument..................................................................12
4Applicabilityofthisdocument........................................................... 12
5Applicablerulesandclassguidelines................................................ 13
6Documentation...................................................................................13
Section2Designbasisandprinciples...................................................................15
1Designbasis...................................................................................... 15
2Designprinciples............................................................................... 16
3Applicationofprinciples.................................................................... 23
4Strengthassessmentmethodology....................................................27
Section3Sloshingimpactdesignloads................................................................ 30
1Introduction.......................................................................................30
2Statisticalanalysis.............................................................................30
3Environmentalandoperationalmodelling..........................................41
4Shipmotioncalculationforsloshingtests......................................... 45
5Sloshingmodelexperiments..............................................................45
6Modeltestprogram........................................................................... 48
7Derivationofdesignloads.................................................................49
8Qualityandefficiencyconsiderations................................................ 50
Section4Pumptowerdesignloads......................................................................54
1Motivation.......................................................................................... 54
2Identificationofrelevantloads......................................................... 54
3Sloshing,gravityandinertialoads.................................................... 54
4Thermalloads.................................................................................... 62
5Hullgirderloads................................................................................ 62
6Internaltankpressureandexternalseapressure............................. 63
7Combinationofloadeffects...............................................................63
Section5Structuralresponseanalysisofcontainmentsystems........................... 65
1General.............................................................................................. 65
2MarkIIIsystem................................................................................ 65
Contents
Classguideline—DNV-CG-0158.EditionOctober2021 Page4
SloshinganalysisofLNGmembranetanks
DNVAS