AS 20519:2024

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Ships and marine technology – Specification for bunkering of liquefied natural gas fuelled vessels (ISO 20519:2021, MOD)

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AS 20519:2024 specifies requirements for LNG bunkering transfer systems and equipment used to bunker LNG fuelled vessels, which are not covered by the IGC Code

Header

About this publication

Preface

Foreword

Introduction

1 Scope

2 Normative references

3 Terms and definitions

4 Abbreviated terms

5 Transfer system design requirements

5.1 Vessel requirements

5.2 Facility requirements

5.3 Bunker transfer equipment requirements

5.4 Emergency shutdown and release systems

5.5 Specific requirements

5.5.1 System support

5.5.2 Hoses, corrugated metallic or composite

5.5.2.1 General

5.5.2.2 Hose support loading arm and hose supports (saddles)

5.5.3 Transfer arms

5.5.4 Bunkering connections

5.5.5 Dry-disconnect/connect coupling

5.5.6 Insulation flange

5.5.7 Fall arrest

5.6 Identification of transfer equipment

5.7 Transfer system design analysis

5.7.1 General

5.7.2 Additional items to be considered to meet the requirements of 5.4.5

5.8 Maintenance

5.9 Maintenance manual

6 LNG bunkering processes and procedures

6.1 Mooring

6.2 Communication in preparation for a transfer

6.3 Risk assessments

6.3.1 General

6.3.2 Risk assessment

6.3.3 Conditions considered

6.3.4 Assessment methodology

6.3.5 Acceptable bunkering parameters

6.4 Vessel safety assessments

6.5 Bunkering transfer procedures

7 Management system and quality assurance

7.1 Management systems

7.2 Management systems for transfer equipment manufacturers

8 Personnel training

8.1 Vessel personnel training requirements

8.2 Additional training requirements for personnel involved in bunkering operations on vessels

8.2.1 General

8.2.2 Personnel providing LNG from port or mobile facilities training

8.3 Documentation of training

9 Records and documentation

Appendix A

Appendix B

B.1 General

B.2 Deterministic assessment of the safety zone

B.3 Risk-based approach for the safety zone

Appendix C

Bibliography