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BS EN ISO 19901-3:2024 - TC Tracked Changes. Oil and gas industries including lower carbon energy. Specific requirements for offshore structures - Topsides structure, 2024
- A-30445102.pdf [Go to Page]
- undefined
- 4.1 Symbols
- 4.2 Abbreviated terms
- 5.1 Conceptual design
- 5.2 Codes and standards [Go to Page]
- 5.2.1 Limit states and allowable stress philosophies
- 5.2.2 Use of national building standards
- 5.3 Deck elevation
- 5.4 Exposure level
- 5.5 Operational requirements [Go to Page]
- 5.5.1 Functional requirements
- 5.5.2 Spillage and containment
- 5.6 Design physical environmental conditions
- 5.7 Critical structure
- 5.8 Assessment of existing topsides structure
- 5.9 Reuse of topsides structure
- 5.10 Repairs, modifications and refurbishment
- 6.1 General
- 6.2 Design/assessment situations
- 6.3 Material selection
- 6.4 Structural interfaces
- 6.5 Design for serviceability [Go to Page]
- 6.5.1 Serviceability limits
- 6.5.2 Vibrations
- 6.5.3 Deflections
- 6.6 Design for strength
- 6.7 Design for fatigue
- 6.8 Robustness [Go to Page]
- 6.8.1 General
- 6.8.2 Ductility
- 6.9 Confirmation of execution of design requirements
- 6.10 Corrosion control
- 6.11 Design for fabrication and inspection
- 6.12 Design for loadout, transportation and installation
- 6.13 Design for structural integrity management
- 6.14 Design for decommissioning, removal and disposal [Go to Page]
- 6.14.1 General
- 6.14.2 Structural releases
- 6.14.3 Lifting appurtenances
- 6.14.4 Heavy lift and set-down operations
- 7.1 General
- 7.2 In-service actions
- 7.3 Action factors [Go to Page]
- 7.3.1 Design actions for operational design/assessment situations in still water
- 7.3.2 Design actions for operational design/assessment situations with operating environmental actions
- 7.3.3 Design actions for extreme design/assessment situations
- 7.4 Vortex-induced vibrations
- 7.5 Indirect actions and resulting forces (action effects)
- 7.6 Metocean and ice actions [Go to Page]
- 7.6.1 Wave, current and ice actions
- 7.6.2 Wind actions
- 7.6.3 Cold regions effects
- 7.7 Seismic actions [Go to Page]
- 7.7.1 General
- 7.7.2 Minimum lateral acceleration
- 7.7.3 Equipment and appurtenances
- 7.8 Actions during fabrication, loadout, transportation, and installation
- 7.9 Actions arising from accidental events [Go to Page]
- 7.9.1 General
- 7.9.2 Structural design for fire hazard
- 7.9.3 Structural design for explosion hazard
- 7.9.4 Explosion and fire interaction
- 7.9.5 Cryogenic spill
- 7.9.6 Actions due to vessel collision
- 7.9.7 Actions due to dropped and swinging objects and projectiles
- 7.9.8 Actions due to loss of buoyancy
- 7.9.9 Actions due to topsides acceleration
- 7.10 Other actions [Go to Page]
- 7.10.1 Drilling
- 7.10.2 Conductors
- 7.10.3 Risers
- 7.10.4 Caissons
- 7.10.5 Maintenance, mechanical handling and lifting aids
- 7.10.6 Bridge supports
- 8.1 Correspondence factor 
- 8.2 Design of cylindrical tubular sections
- 8.3 Design of non-cylindrical sections [Go to Page]
- 8.3.1 Rolled and welded non-circular prismatic members
- 8.3.2 Plate girder
- 8.3.3 Box girder
- 8.3.4 Stiffened plate components and stressed skin structures
- 8.4 Connections [Go to Page]
- 8.4.1 General
- 8.4.2 Restraint and shrinkage
- 8.4.3 Bolted connections
- 8.5 Castings and forgings
- 8.6 Design for structural stability
- 9.1 Limit state verification approach
- 9.2 Limit state verification for fire and explosion events
- 9.3 Approaches for limit state verification for fire and explosion events
- 9.4 Risk and risk targets
- 9.5 Limit state verification for fire and explosion events by semi-probabilistic approach [Go to Page]
- 9.5.1 DL limit state verification
- 9.5.2 NC limit state verification
- 9.5.3 Representative values of accidental actions
- 10.1 Topsides design [Go to Page]
- 10.1.1 General
- 10.1.2 Topsides on concrete substructures
- 10.1.3 Topsides on floating structures
- 10.1.4 Equipment supports
- 10.2 Topsides structure design models [Go to Page]
- 10.2.1 General
- 10.2.2 Substructure model for topsides design
- 10.2.3 Topsides model for topsides design
- 10.2.4 Modelling for design of equipment and piping supports
- 10.3 Substructure interface [Go to Page]
- 10.3.1 Responsibility
- 10.3.2 Strength design
- 10.3.3 Fatigue design
- 10.4 Flare towers, booms, vents and similar structure
- 10.5 Helicopter landing facilities (helidecks) [Go to Page]
- 10.5.1 General
- 10.5.2 Construction
- 10.5.3 Helideck design verification
- 10.5.4 Reassessment of existing helidecks
- 10.6 Crane support structure and crane boom rest [Go to Page]
- 10.6.1 General
- 10.6.2 Design requirements
- 10.6.3 Static design
- 10.6.4 Fatigue design
- 10.6.5 Seismic/Earthquake design
- 10.6.6 Dynamic design
- 10.6.7 Fabrication
- 10.6.8 Crane boom rest design
- 10.7 Derrick equipment set
- 10.8 Bridges
- 10.9 Bridge bearings
- 10.10 Anti-vibration mountings for modules and major equipment skids
- 10.11 System interface assumptions
- 10.12 Fire protection systems
- 10.13 Penetrations
- 10.14 Difficult-to-inspect areas
- 10.15 Drainage
- 10.16 Strength reduction due to heat
- 10.17 Walkways, laydown areas and equipment maintenance
- 10.18 Muster areas and lifeboat stations
- 11.1 General
- 11.2 Carbon steel
- 11.3 Stainless steel [Go to Page]
- 11.3.1 General
- 11.3.2 Types of stainless steel
- 11.3.3 Material properties
- 11.4 Aluminium alloys [Go to Page]
- 11.4.1 General
- 11.4.2 Types of aluminium
- 11.4.3 Material properties
- 11.4.4 Thermite sparking
- 11.5 Fibre-reinforced polymers (FRP)
- 11.6 Timber
- 12.1 Assembly [Go to Page]
- 12.1.1 General
- 12.1.2 Grating
- 12.1.3 Landing and stairways
- 12.1.4 Temporary attachments
- 12.2 Welding
- 12.3 Fabrication inspection
- 12.4 Quality control, quality assurance and documentation
- 12.5 Corrosion protection [Go to Page]
- 12.5.1 Coatings
- 12.5.2 Under deck areas
- 12.5.3 Dissimilar materials
- 12.6 In-service inspection, monitoring and maintenance of corrosion control
- 14.1 General
- 14.2 Requirements applying to topsides structures [Go to Page]
- 14.2.1 Corrosion protection systems
- 14.2.2 Critical structures
- 14.2.3 Control of hot work (e.g. welding and cutting)
- 14.2.4 Accidental events and incidents
- 14.2.5 Change control [Go to Page]