Draft Details
- Liquefied Natural Gas (LNG) - Floating near-sh...
- Legal Notice for Draft Standards
- Preface
- 0 Introduction
- + 1 Scope
- + 1.1 Application
- Figure 1
- 1.2 Other LNG applications
- 1.3 Exceptions
- 1.4 Terminology
- 2 Reference publications
- + 3 Definitions, abbreviations and symbols
- 3.1 Definitions
- 3.2 Abbreviations
- + 4 General design requirements and technical saf...
- 4.1 General
- + 4.2 Basis for design
- + 4.2.1 Site and metocean data
- 4.2.1.1 General
- 4.2.1.2 Bathymetric and topographic surveys at ...
- + 4.2.2 Metocean considerations
- 4.2.2.1 General
- 4.2.2.2 Meteorological and oceanographic (metoc...
- 4.2.2.3 Range of effects to be taken into accou...
- 4.2.2.4 Seismic analysis and design
- 4.2.2.5 Tsunami
- 4.2.2.6 Site selection or location
- + 4.3 Design philosophy
- 4.3.1 General
- 4.3.2 Design premise
- 4.3.3 Design conditions
- + 4.3.4 Limit states and design loads
- 4.3.4.1 General
- 4.3.4.2 Serviceability limit state (SLS) or des...
- 4.3.4.3 Ultimate limit state (ULS) or ultimate ...
- 4.3.4.4 Fatigue limit state (FLS) or design fat...
- 4.3.4.5 Accidental limit state (ALS) or acciden...
- 4.3.5 Operations manual limit state section
- + 4.4 Role of Flag State Authority (FSA) and Clas...
- 4.4.1 Role of flag state
- + 4.4.2 Role of Classification Society
- 4.4.2.1 General
- 4.4.2.2 Application to hull and marine system
- 4.4.2.3 Application to topsides
- 4.4.2.4 Application to interface between onshor...
- + 4.5 Facility layout
- 4.5.1 General
- 4.5.2 Layout Design Principles
- 4.5.3 Layout considerations
- + 4.6 Electrical system design
- 4.6.1 UPS
- 4.7 Inherently safer design
- + 4.8 Major Accident Risk Management
- 4.8.1 General
- 4.8.2 Overview of major accident management
- + 4.8.3 Major accident hazards identification and...
- 4.8.3.1 Risk assessment processes
- 4.8.3.2 Risk assessment studies
- + 4.9 Safety Barriers
- 4.9.1 General
- 4.9.2 Safety Barrier Management System
- 4.9.3 Safety Barrier Lifecycle Considerations
- Figure 2
- + 5 FLNG facility mooring
- + 5.1 Design conditions and principles
- 5.1.1 General
- 5.1.2 Mooring conditions
- 5.1.3 Extreme environmental condition(s)
- 5.1.4 Accidental condition
- + 5.2 Design criteria
- 5.2.1 General
- 5.2.2 Applicable codes for FLNG facility
- 5.2.3 Mooring lines
- 5.2.4 Fenders and hull pressure
- 5.2.5 Clearances
- 5.2.6 Mooring systems service life
- + 5.3 Environmental conditions and loads
- 5.3.1 General
- 5.3.2 Wind
- 5.3.3 Waves
- 5.3.4 Current
- 5.3.5 Seiche
- 5.3.6 Passing ships
- 5.3.7 Tsunami
- 5.3.8 Earthquake
- + 5.4 Mooring assessment
- 5.4.1 General
- 5.4.2 Operating and environmental conditions
- 5.4.3 Site-specific conditions
- 5.4.4 Vessel loading conditions and hull models...
- 5.4.5 Dynamic analysis
- 5.4.6 Determination of design mooring tensions ...
- 5.5 Operational considerations for mooring equi...
- + 6 Hull design
- + 6.1 General
- 6.1.1 Primary design requirements
- 6.1.2 Scope
- 6.1.3 Design basis
- 6.1.4 Risk assessments
- + 6.2 Structural: Fatigue assessment
- 6.2.1 General
- 6.2.2 Hull
- 6.2.3 LNG storage tanks
- + 6.2.4 Topsides
- 6.2.4.1 General
- 6.2.4.2 Topside fatigue design factors
- 6.2.4.3 Topside supports
- 6.2.4.4 Topside load considerations
- + 6.3 Fire and explosion
- 6.3.1 General
- 6.3.2 Structural fire protection and fire hazar...
- 6.3.3 Strengthening for blast loads
- + 6.4 Accidental loads
- 6.4.1 General
- 6.4.2 Hull interface with LNG storage
- 6.4.3 Ship collision
- 6.4.4 Dropped objects
- + 6.5 Corrosion
- 6.5.1 General
- + 6.5.2 Basic corrosion control
- 6.5.2.1 Corrosion allowances and design margins...
- 6.5.2.2 Cathodic protection
- 6.5.2.3 Hull coating systems
- 6.5.3 Consequences
- + 6.6 Cryogenic spill protection
- 6.6.1 General
- 6.6.2 Basics of spill protection for hull
- 6.6.3 Additional protection for topside process...
- + 7 LNG storage
- 7.1 General
- + 7.2 Tank types
- 7.2.1 General
- 7.2.2 Applying LNG carrier storage tank designs...
- + 7.3 LNG storage design
- 7.3.1 General
- + 7.3.2 LNG storage design conditions
- 7.3.2.1 General
- 7.3.2.2 Ultimate design condition
- 7.3.2.3 Fatigue design condition
- 7.3.2.4 Accident design condition
- 7.3.3 Secondary containment
- + 7.3.4 Sloshing
- 7.3.4.1 General
- 7.3.4.2 Sloshing design loads
- 7.3.4.3 Structural response analysis
- 7.3.5 Assessment of topsides and auxillaries im...
- 7.4 Rollover
- 7.5 Boil-off gas (BOG) management
- + 8 FLNG facility battery limit interfaces
- + 8.1 General
- 8.1.1 Motion
- + 8.1.2 Transfer emergency shutdown system (ESD)
- 8.1.2.1 General
- 8.1.2.2 ESD Design
- 8.1.2.3 ESD activation
- 8.1.2.4 ESD testing
- + 8.1.3 Emergency breakaway
- 8.1.3.1 General
- 8.1.3.2 Emergency release system (ERS)
- + 8.2 Liquid and gas transfer connection types
- 8.2.1 Loading arms
- + 8.2.2 Flexible hoses
- 8.2.2.1 General
- 8.2.2.2 Hose requirements
- + 8.3 LNG loading and off-loading
- 8.3.1 General
- 8.3.2 Loading arms
- 8.3.3 Cryogenic Hoses
- 8.3.4 Cryogenic spill protection
- 8.4 Hydrocarbon gas services
- 8.5 Non-cryogenic hydrocarbon liquids
- 8.6 Electrical Cable
- + 9 Safety and security zones
- 9.1 General
- 9.2 Safety zone(s)
- 9.3 Security zone(s)
- + 10 Operation, maintenance, and asset integrity ...
- 10.1 General
- 10.2 Operation and maintenance program
- + 10.3 Program scope
- 10.3.1 Development and Implementation of operat...
- + 10.4 Asset Integrity Management Program
- 10.4.1 General
- 10.4.2 Hull
- + 10.4.3 LNG storage tanks
- 10.4.3.1 General
- 10.4.3.2 LNG storage tank maintenance
- + 10.5 Operations Manual
- 10.5.1 General
- 10.5.2 Design
- 10.5.3 Operations
- + 11 Topsides design (modularization and mariniza...
- + 11.1 General
- Table 1
- + 11.2 Modularization
- 11.2.1 General
- 11.2.2 Module packaging and support
- 11.2.3 Module safety separation
- 11.2.4 Minimizing leak sources
- 11.2.5 Active and passive fire protection
- 11.2.6 Escape, evacuation, and rescue
- 11.2.7 Piping stress analysis
- + 11.2.8 Pre-commissioning and commissioning
- 11.2.8.1 At the construction yard
- 11.2.8.2 At the final location
- 11.2.9 Operations and maintenance
- 11.2.10 Decommissioning
- + 11.3 Marinization
- 11.3.1 Material selection
- 11.3.2 Equipment design
- + 11.3.3 Transportation loads and sea fastening
- 11.3.3.1 General
- 11.3.3.2 Transportation of a FLNG facility and ...
- 11.3.3.3 Securing equipment internals
- 11.3.3.4 Post-transportation verification
- + 12 Delivery: Design stage, construction, pre-co...
- + 12.1 General
- 12.1.1 Overview of requirements
- 12.2 Design and engineering supporting delivery...
- + 12.3 Construction
- 12.3.1 Construction at yard
- + 12.3.2 Transportation: Sea voyages
- 12.3.2.1 General
- 12.3.2.2 Transit plan
- 12.3.2.3 Assurance plan
- 12.3.3 Construction records
- 12.3.4 FLNG facility integration with shore equ...
- 12.3.5 Environment
- 12.4 Pre-commissioning
- + 12.5 Commissioning
- 12.5.1 General
- 12.5.2 Cryogenic considerations
- 12.6 Decommissioning
- + 13 Conversion of existing LNG carriers to FLNG ...
- 13.1 General
- + 13.2 Selection of the ship
- 13.2.1 Condition assessment program
- 13.2.2 Tie back to risk assessment
- 13.2.3 Flag and class
- 13.2.4 Requirements for Double Hulls
- + 13.3 Structural
- 13.3.1 Additional design considerations for con...
- + 13.3.2 Strength assessment
- 13.3.2.1 General
- 13.3.2.2 Operational modes strength assessment
- + 13.3.2.3 Hull structure
- 13.3.2.3.1 General
- 13.3.2.2.2 Global strength
- 13.3.2.2.3 Local strength
- + 13.3.3 Fatigue assessment
- 13.3.3.1 General
- 13.3.3.2 Hull structure
- 13.3.3.3 Topside and topside interface to hull
- 13.3.3.4 LNG storage tank and interface to hull...
- 13.3.3.5 Verification
- + 13.4 Safety systems
- 13.4.1 General arrangement
- 13.4.2 Fire rating
- + 13.5 Installation guidance on board the ship
- 13.5.1 Mooring equipment
- + 13.5.2 Transfer systems
- 13.5.2.1 General
- 13.5.2.2 Impact of cyclic loading operations on...
- 13.5.3 BOG management
- 13.5.4 Auxiliary and utility systems
- + 13.6 Management of Hazardous Materials
- 13.6.1 Inventory of Hazardous Materials (IHM)
- 13.6.2 Asbestos
- 13.6.3 Anti-fouling systems
- Annex A (normative)
- + A.1 Seismic hazards and earthquake loads
- A.1.1 General
- + A.1.2 Specification of earthquake ground motion...
- A.1.2.1 General
- A.1.2.2 Earthquake ground motion parameters fro...
- A.1.2.3 Directivity effects
- A.1.2.4 Directionality effects
- A.1.2.5 Earthquake ground motion parameters fro...
- A.1.2.6 Selection of acceleration time historie...
- A.1.2.7 Vertical earthquake motions
- + A.1.3 Specification of earthquake ground motion...
- A.1.3.1 General
- A.1.3.2 Site classes
- A.1.3.3 Site-specific evaluation of dynamic soi...
- A.1.3.4 Code-based procedure for dynamic site r...
- A.2 Tsunamis
- + A.3 Integration of seismic hazard analyses and ...
- A.3.1 General
- A.3.2 Phase A: Tasks associated with site chara...
- A.3.3 Phase B: Tasks associated with dynamic so...
- A.3.4 Phase C: Performance evaluation of slopes...
- + Annex B (Informative)
- + B.4.8.2 Overview of major accidental management...
- Figure B.1
- B.6.6.3 Additional protection for topside proce...
1.1 Application
This Standard applies to
a) permanently moored floating near-shore facilities used for pre-treatment of natural gas, liquefication of natural gas, storage of LNG, or offloading of LNG;
b) purpose-built floating LNG facilities and repurposed LNG carriers (e.g., LNG carriers);
c) ship-to-shore interfaces (e.g., gas supply and electrical connection); and
d) station keeping systems (e.g., tethering structure and mooring systems).
Note: Refer to Figure 1 for CSA standards that addresses minimum standards onshore LNG facilities, marine structures associated to onshore LNG facilities and near-shoreline LNG plants.
1.2 Other LNG applications
CSA Z276.1 contains additional requirements for LNG loading operations.
1.3 Exceptions
This standard does not apply to
a) onshore LNG facilities (refer to CSA Z276);
b) offshore LNG facilities;
c) LNG carriers design;
d) floating facilities used for the purpose of LNG regasification (i.e., floating storage and regassification units (FSRU)).
e) associated marine structures (e.g., piers, wharves, or jetties), refer to CSA Z276.1; and
f) gravity-based structures.
1.4 Terminology
In this Standard, “shall” is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the standard; “should” is used to express a recommendation or that which is advised but not required; and “may” is used to express an option or that which is permissible within the limits of the Standard.
Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material.
Notes to tables and figures are considered part of the table or figure and may be written as requirements.
Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.
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