I.S. EN ISO 20257-1:2020&LC:2020

Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions and abbreviated terms
4 Basis of design
5 Health, safety and the environment
6 Mooring and stationkeeping
7 Hull design
8 LNG storage
9 LNG transfer system
10 Boil-off gas handling and recovery
11 Low temperature pipework
12 Utilities systems
13 Process and safety control and monitoring systems
14 Security management
15 Commissioning
16 Inspection and maintenance
17 Preservation and corrosion protection
18 Preparation for operations
19 Specific requirements for conversion of existing installations to floating LNG
installations
Annex A (informative) Risk-based analysis
Annex B (informative) Safety studies
Annex C (normative) Definition of reference flow rates for LNG boil-off calculations
Annex D (normative) Design basis and criteria of an LNG transfer system
Annex E (informative) Seismic classification
Annex F (informative) Assessment of novel technology
Annex G (informative) Environmental, occupational health and industrial hygiene aspects
Bibliography

This document provides requirements and guidance for the design and operation of floating liquefied natural gas (LNG) installations, including installations for the liquefaction, storage, vaporisation, transfer and handling of LNG, in order to have a safe and environmentally acceptable design and operation of floating LNG installations.