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GB/T 40788-2021Ships and marine technology - Offshore wind energy - Port and marine operations (English PDF)

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Issued by

State Administration for Market Regulation, China National Standardization Administration

Level / Type

National · Recommended

Issue date

October 11, 2021

Implementation date

May 1, 2022

Scope

GB/T 40788-2021 (Ships and marine technology - Offshore wind energy - Port and marine operations) is available as an English-translated PDF.

GB/T 40788-2021 — This document provides comprehensive requirements and guidance for the planning and engineering implementation of offshore wind farm ports and offshore operations, including related to such operations. All relevant documents and work, for example, analysis and design of components, systems, equipment and procedures for performing port and offshore operations, to And the methods or procedures developed for the safe execution of these operations. This document aims to provide comprehensive information for all relevant ports and offshore operations of offshore wind farms, including loading, maritime transportation, installation, Offshore commissioning, operation and maintenance, component replacement, repair operations, decommissioning, disassembly or redeployment of offshore wind farms, etc. This document applies to the port and offshore operations of the following offshore structures, including. ---Steel structure foundation; ---Concrete gravity foundation structure; ---High-pile steel foundation or steel and concrete mixed structure foundation; ---Subsea template or similar temporary structure, temporary auxiliary installation equipment; ---Steel or mixed material towers, nacelles and blades of wind turbine generators; ---Turbine moored on the seabed; ---A jack-up offshore device used for sea booster stations or offshore living platforms; --- Ship launching system from the dock or coast; ---Array cables in the wind farm and output cables connecting the wind farm to the grid. This document is also applicable to the modification of existing structures, such as the installation of additional components, replacement of components or decommissioning and disassembly, as well as the Marine operations related to technical maintenance during the operating life week. This document does not apply to the following tasks. ---Construction activities, such as pre-assembly sites on shore that are not facing the marine environment; ---Shore road transportation; ---Diving operations.

Document preview — GB/T 40788-2021

National Standard of the People's Republic of China

Classification: U 04

Issued by: State Administration for Market Regulation, China National Standardization Administration

1 Scope1
2 Normative references1
3 Terms and definitions2
4 Symbols and abbreviations22
4.1 Symbols22
4.2 Abbreviations25
5 General27
5.1 General27
5.1.1 Overview27
5.1.2 Safety requirements28
5.2 Jurisdiction29
5.2.1 General requirements29
5.2.2 Safety of life at sea29
5.2.3 Environment29
5.3 HSSE Project29
5.4 Risk management30
5.4.1 General requirements30
5.4.2 Risk assessment techniques30
5.5 Work Safety Analysis30
5.6 Environmental Impact Research31
5.7 Staffing, qualifications, work and safety training31
5.8 Daily progress and incident reports31
5.9 Personnel tracking31
5.10 Approval by national authorities32
6 Organization, Documents and Plans32
6.1 General32
6.2 Organization and communication32
6.2.1 Project organization32
6.2.2 Operation Organization33
6.3 Quality assurance and management procedures33
6.4 Technical regulations33
6.5 Technical documents34
6.5.1 File numbering system34
6.5.2 Risk assessment and method description for port and offshore operations34
6.5.3 Work schedule/plan35
6.5.4 Emergency concept35
6.5.5 Emergency plans and emergency procedures36
6.5.6 Emergency Response Coordination Plan37
6.5.7 Completion records/Completion documents37
6.5.8 CAD data transmission standard38
6.6 Certification and documentation40
6.6.1 General requirements40
6.6.2 Required or recommended documents40
6.7 Maritime guarantee survey40
6.7.1 Overview40
6.7.2 Responsibilities of Maritime Guarantee Inspector40
6.7.3 Scope of Work of Maritime Guarantee Inspector41
6.7.4 Certificate of Approval41
6.8 Systems and equipment41
6.8.1 General requirements41
6.8.2 Marine ships42
6.8.3 Main equipment42
7 Marine meteorological requirements42
7.1 General42
7.2 Weather-restricted operations/non-weather-restricted operations42
7.2.1 Weather-restricted operations42
7.2.2 Non-weather restricted operations43
7.3 Marine meteorological conditions43
7.3.1 Wind43
7.3.2 Waves, wave periods and swell conditions43
7.3.3 Water flow43
7.3.4 Other marine meteorological factors43
7.3.5 Temperature44
7.3.6 Marine life44
7.4 Marine meteorological conditions44
7.4.1 Design criteria and operating restrictions44
7.4.2 Return period45
7.4.3 Analysis based on ship response45
7.4.4 Probability distribution of sea state parameters45
7.5 Operation duration, emergency time and weather window45
7.5.1 Planning work time45
7.5.2 Weather window period and emergency time45
7.5.3 Irreversible point46
7.5.4 Operational restrictions and marine meteorological reduction factors for forecasting and monitoring46
7.6 Weather forecast47
7.6.1 General requirements47
7.6.2 Prediction parameters47
7.7 On-site monitoring47
8 Land transportation and nearshore transportation47
8.1 Overview47
8.2 Structural integrity calculation48
8.3 Road transport48
8.4 Inland water transport48
8.5 Nearshore Waterway Transport48
8.6 Rail Transport48
8.7 Transport pallets and equipment48
9 Transit storage area49
9.1 General requirements49
9.2 Infrastructure requirements49
9.2.1 Weight-bearing49
9.2.2 Ground49
9.3 Storage bays and equipment50
9.4 Component storage requirements50
9.5 Component protection50
9.6 Structural integrity calculation50
9.6.1 General requirements50
9.6.2 Eddy current shedding50
9.7 Security measures50
10 Pre-assembly51
10.1 General requirements51
10.2 Pre-assembly area requirements51
10.3 Pre-assembly activities51
10.4 Pre-assembled equipment51
10.5 Structural integrity calculation52
10.6 Eddy current shedding52
10.7 Safety measures52
11 Port operations52
11.1 Overview52
11.2 Port passage52
11.2.1 Waterway52
11.2.2 Inland passage52
11.3 Dock storage area53
11.4 Security measures53
11.5 Terminal area requirements53
11.6 The requirements of jacking operations on the seabed geology of the port53
12 Weight control53
12.1 General Rules53
12.2 Weight control level54
12.3 Weight and center of gravity constraints54
12.4 Weight control monitoring54
12.5 Dimension control54
12.6 Series Project55
12.7 Weight determination55
13 Stability55
13.1 General Rules55
13.2 General requirements55
13.3 Stability calculation55
13.4 Integrity stability56
13.4.1 General requirements56
13.4.2 Integrity Stability Standard57
13.5 Damage stability58
13.5.1 General requirements58
13.5.2 Damage stability criteria59
13.6 Monohull barge transportation60
13.7 Multihull barge transportation60
13.8 Classed ships60
13.9 Floating structure60
13.9.1 General requirements60
13.9.2 Intact stability and damage stability61
13.9.3 Righting and installation of floating structure and post-launch structure61
13.10 Loading operations62
13.11 Watertight integrity and temporary closing device63
13.12 Tilt test63
14 Ballast operations64
14.1 General64
14.2 Ballast calculation at different stages64
14.3 Ballast system64
14.3.1 Operational aspects64
14.3.2 Other operational considerations65
14.4 Prevent damage and deterioration65
14.4.1 General requirements65
14.4.2 Freezing66
14.5 Preventing progressive flooding under damage conditions66
14.6 Control and indication system66
14.7 Pump67
14.7.1 General requirements67
14.7.2 Specifications and layout67
14.7.3 Pump performance curve and functional limitations67
14.8 Valve arrangement67
14.9 Ventilation system67
14.10 Air cushion system capacity67
14.11 System Test68
15 load68
15.1 General68
15.2 Loading categories68
15.2.1 Summary68
15.2.2 Design. Structural analysis of each loading stage69
15.2.3 Loading plan69
15.2.4 Cargo weight and center of gravity information70
15.2.5 Deck bearing planning70
15.3 Structural loading70
15.4 Venues and docks70
15.5 Barge70
15.6 Connecting beams, slides and shoes71
15.7 Mooring equipment71
15.7.1 Weather-restricted operations71
15.7.2 Temporary mooring system71
15.8 Bottom loading71
15.9 Pumping and ballasting72
15.9.1 Pumping flow72
15.9.2 Recommended pumping flow72
15.10 Use trailers, self-propelled modular transport vehicles or hydraulic sliding shoes to load73
15.10.1 General requirements73
15.10.2 Structural capabilities73
15.10.3 Load Balancing and Stability73
15.10.4 Vertical positioning74
15.10.5 Shoes74
15.11 Propulsion system design, redundancy and backup74
15.11.1 Propulsion system74
15.11.2 Redundancies and recommendations74
15.12 Floating to a diving barge or ship76
15.13 Hoisting and loading77
15.14 Horizontal loading77
15.15 Barge resetting and sea fixation77
15.16 Tugboat78
15.17 Management and Organization78
15.18 Loading Manual78
15.19 Operation Manual78
16 Transport80
16.1 Overview80
16.2 General80
16.2.1 Manned towing80
16.2.2 Unmanned Towing80
16.2.3 Navigation signal lights80
16.2.4 Emergency Plan80
16.2.5 Motion response80
16.2.6 Verification of transportation objects81
16.2.7 Structural analysis of all transport stages81
16.2.8 Transportation planning81
16.3 Meteorological routes and forecasts81
16.4 Safe havens, sheltered areas, waiting areas82
16.5 Inspection during towing or voyage82
16.6 Responsibility82
16.7 Dangerous goods82
16.8 Ballast water82
16.9 Depth, height and maneuverability limits83
16.10 Water depth margin83
16.11 Overhead altitude83
16.12 Channel width84
16.13 Requirements for measurement84
16.14 Towing force, formation composition and towing arrangement84
16.14.1 Towline pulling force84
16.14.2 Tug fleet85
16.14.3 Towing arrangements85
16.14.4 Towline length86
16.15 Towed out of dry dock86
16.15.1 Summary86
16.15.2 Water depth margin86
16.15.3 Side spacing86
16.15.4 Air cushion/air pressure86
16.15.5 Capacity layout of winches and trailers86
16.15.6 Positioning system87
16.15.7 Investigation requirements87
16.16 Offshore towing87
16.16.1 Towing route and towing spacing87
16.16.2 Positioning system87
16.17 Towing at sea87
16.17.1 Ship selection87
16.17.2 Stability87
16.17.3 Maritime fixation87
16.17.4 Eddy current shedding89
16.17.5 Navigation system89
16.18 Transport Manual89
17 Temporary mooring and position maintenance for offshore operations90
17.1 Introduction90
17.2 Environmental Standards90
17.3 Determination of mooring response90
17.3.1 Methods of analysis90
17.3.2 General rules for mooring design91
17.4 Dimensions of mooring lines91
17.4.1 General requirements91
17.4.2 Mooring rope tension limitation and design safety factor91
17.4.3 Specific mooring conditions92
17.5 Dimensions of anchor92
17.6 Dimensions of attachment92
17.7 Dimensions of mooring lines93
17.8 Spacing under extreme conditions93
17.9 Spacing during positioning93
17.10 Mooring tension94
17.11 Other position holding methods94
17.11.1 Overview94
17.11.2 Dynamic Positioning System94
17.11.3 Dedicated mooring device94
17.11.4 Use of tugboat94
17.12 Public Reference Station System95
18 Offshore installation work95
18.1 Overview95
18.1.1 Summary95
18.1.2 Transition95
18.1.3 Wind turbine generators95
18.1.4 Sea ascending station/sea living platform96
18.1.5 Installation Plan96
18.1.6 Cargo weight and center of gravity information98
18.2 Installation site98
18.2.1 Seabed survey98
18.2.2 Seabed geological survey98
18.2.3 Seabed levelling98
18.2.4 Field charts98
18.2.5 Unexploded ordnance (UXO)99
18.3 Systems and equipment100
18.3.1 Summary100
18.3.2 Ship100
18.3.3 Equipment101
18.3.4 Position Reference System101
18.3.5 Ballast System101
18.3.6 Interfacing between transport ships and offshore equipment101
18.4 Ship positioning101
18.5 Site requirements102
18.6 Geotechnical assessment of pile driving site102
18.6.1 General requirements102
18.6.2 Geological survey102
18.6.3 Puncture analysis, puncture and horizontal-vertical interaction103
18.7 Ship Operation Manual104
18.8 Platform pre-ballasting procedure104
18.9 Ballast105
18.10 Hoisting105
18.10.1 Summary105
18.10.2 Installation of liftable jacket foundation105
18.10.3 Installation of pre-piling formwork105
18.10.4 Installation of piles105
18.10.5 Installation of transition section106
18.10.6 Installation of concrete gravity foundation106
18.10.7 Transfer of items from the barge to the deck of a crane/jack-up vessel106
18.10.8 Tower installation106
18.10.9 Installation of wind turbine generators, including nacelles, hubs and blades106
18.10.10 Installation of upper modules such as sea booster station/living platform106
18.10.11 Homework Points107
18.10.12 Job control parameters107
18.11 Ballast drop107
18.11.1 General requirements107
18.11.2 Homework Points107
18.11.3 Job control parameters107
18.12 Precise positioning on the seabed through active and passive methods108
18.12.1 General requirements108
18.12.2 Aspects of job design108
18.12.3 Job control parameters108
18.13 Penetration of skirt pile108
18.13.1 Overview108
18.13.2 Gravity penetration108
18.13.3 Inhalation and penetration109
18.13.4 Aspects of job design109
18.13.5 Job control parameters109
18.14 Pile installation109
18.14.1 Summary109
18.14.2 Aspects of job design109
18.14.3 Job control parameters110
18.15 Grouting110
18.15.1 Summary110
18.15.2 Grouting between the pile body and the transition section structure111
18.15.3 Grouting at the bottom of pile-jacket structure foundation111
18.15.4 Aspects of job design111
18.15.5 Preparation111
18.15.6 Job control parameters112
18.16 Bolt connection of foundation112
18.17 Welding of pile/foundation and upper module112
18.18 Noise reduction measures112
18.19 Personnel commuting installation unit112
18.20 Offshore completion113
18.20.1 Summary113
18.20.2 ROV inspection113
18.20.3 Remove temporary equipment113
18.20.4 Scour protection113
18.20.5 Final inspection113
18.20.6 Project Implementation Manual113
19 Hoisting equipment design and operation114
19.1 General Rules114
19.2 Rigging geometry116
19.3 Actions and effects116
19.4 Weight contingency factor117
19.5 Dynamic Amplification Factors (DAFs)118
19.5.1 General requirements118
19.5.2 Crane hoisting118
19.5.3 Offshore hoisting of two or more shipboard cranes119
19.6 Typical hook load120
19.6.1 Single crane single hook hoisting120
19.6.2 Two cranes double hook hoisting120
19.7 Lifting point typical lifting weight120
19.7.1 Single hook hoisting120
19.7.2 Double hook hoisting121
19.8 Typical force on lifting point121
19.8.1 Typical vertical force121
19.8.2 Typical force consistent with the sling direction122
19.8.3 Typical lateral forces122
19.9 Typical forces of slings and grommet122
19.10 Design value of action and action effect123
19.11 Strength of slings, grommets and shackles124
19.11.1 Steel cable slings124
19.11.2 Fiber rope slings and fiber rope loops124
19.11.3 Ultimate working load and design strength of fiber slings and grommet125
19.11.4 Ultimate working load and design strength of shackle125
19.12 Design Verification126
19.12.1 Allowable hook load126
19.12.2 Slings and grommets126
19.12.3 Lifting points and their connections to structures and supports127
19.13 Lifting point design128
19.13.1 General requirements128
19.13.2 Sling ellipse deformation128
19.13.3 Plate rolling direction and load direction128
19.13.4 Shackle holes129
19.13.5 Cast lugs and welded trunnions129
19.13.6 Cheek129
19.13.7 Eyeplate129
19.14 Pitch129
19.14.1 General requirements129
19.14.2 Spacing around lifting objects130
19.14.3 Spacing around the crane ship130
19.14.4 Spacing around jack-up cranes130
19.14.5 Spacing around mooring anchors of crane vessels130
19.14.6 Spacing around the array cable area131
19.14.7 Spacing around pile boots for jack-up ships131
19.15 Anti-flash pads and guides131
19.15.1 General requirements131
19.15.2 Object movement131
19.15.3 Position of anti-flash pads and guides132
19.15.4 Anti-finger pads and guiding device loads132
19.15.5 Design considerations133
19.16 Hoisting with heave compensation133
19.17 Hoisting with dynamic positioning133
19.18 Practical considerations133
19.18.1 Channel133
19.18.2 Design of maritime fixed133
19.18.3 Equipment133
19.18.4 Sling134
19.19 Certification requirements for lifting equipment134
19.19.1 Standard lifting equipment134
19.19.2 Custom hoisting equipment134
19.19.3 Re-certification of lifting equipment134
20 Laying, burying, connection and maintenance of submarine cables135
20.1 Overview135
20.2 Planning and Design135
20.2.1 Cable size and loading and unloading parameters135
20.2.2 Submarine survey of the cable channel between the turbine generator and the booster station136
20.2.3 Ship adaptability137
20.2.4 Cable storage and cable handling equipment138
20.2.5 Navigation equipment-positioning and control of ship/cable interface139
20.3 Cable loading and sea transfer139
20.3.1 General requirements139
20.3.2 Loading, unloading and hoisting139
20.3.3 Cable winding loading139
20.3.4 Hoisting and sea transfer141
20.4 Cable laying141
20.4.1 General requirements141
20.4.2 Cable pull-in procedure141
20.4.3 Laying142
20.5 Cable protection142
20.5.1 Summary142
20.5.2 Cable Embedding142
20.5.3 Non-embedded cable protection143
20.6 Cable interleaving144
20.7 Cable landing144
20.8 Cable connection and maintenance145
20.9 Finished measurement145
20.10 Cable integrity check145
20.11 Cable Installation Manual145
21 Construction Management146
21.1 General146
21.2 Maritime coordination146
21.3 Port coordination147
21.4 Guard ship147
21.5 Report147
21.6 Personnel Tracking147
Appendix A (informative) Additional information and guidance148
A.1 Overview148
A.2 Guidance on 15.18.Loading Manual148
A.3 Guidance on 16.18.Transport/Towing Manual149
A.3.1 Transport/Towing Manual149
A.3.2 Daily report149
A.4 About 18.1.5 Guidelines. Installation Manual150
A.5 About the 20.11 Guide. Cable Installation Manual151
A.5.1 General requirements151
A.5.2 Calculation and analysis report153
A.5.3 Operational details and procedures153
A.5.4 Emergency/emergency procedures155
A.6 Guidance on 19.15.4.Anti-flash pads and guide loads155
References160

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules of Standardization Documents"

Drafting.

The translation method used in this document is equivalent to ISO 29400.2020 "Ships and Offshore Technology, Offshore Wind Energy Ports and Offshore Operations".

1 Scope

This document provides comprehensive requirements and guidance for the planning and engineering implementation of offshore wind farm ports and offshore operations, including related to such operations.

All relevant documents and work, for example, analysis and design of components, systems, equipment and procedures for performing port and offshore operations, to

And the methods or procedures developed for the safe execution of these operations.

This document aims to provide comprehensive information for all relevant ports and offshore operations of offshore wind farms, including loading, maritime transportation, installation,

Offshore commissioning, operation and maintenance, component replacement, repair operations, decommissioning, disassembly or redeployment of offshore wind farms, etc.

This document applies to the port and offshore operations of the following offshore structures, including.

---Steel structure foundation;

---Concrete gravity foundation structure;

---High-pile steel foundation or steel and concrete mixed structure foundation;

---Subsea template or similar temporary structure, temporary auxiliary installation equipment;

---Steel or mixed material towers, nacelles and blades of wind turbine generators;

---Turbine moored on the seabed;

---A jack-up offshore device used for sea booster stations or offshore living platforms;

--- Ship launching system from the dock or coast;

---Array cables in the wind farm and output cables connecting the wind farm to the grid.

This document is also applicable to the modification of existing structures, such as the installation of additional components, replacement of components or decommissioning and disassembly, as well as the

Marine operations related to technical maintenance during the operating life week.

This document does not apply to the following tasks.

---Construction activities, such as pre-assembly sites on shore that are not facing the marine environment;

---Shore road transportation;

---Diving operations.

2 Normative references

The content of the following documents constitutes an indispensable clause of this document through normative references in the text. Among them, dated quotations

Only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to

This document.

ISO.19901-1 Special requirements for offshore structures in the petroleum and natural gas industry Part 1.Marine meteorological design and operating conditions

(Petroleum andnaturalgasindustries-Specificrequirementsforoffshorestructures-Part 1.

Metoceandesignandoperatingconsiderations)

ISO.19901-7 Special requirements for offshore structures in the petroleum and natural gas industry Part 7.Floating offshore structures and mobile offshore

Facility location retention system (Petroleumandnaturalgasindustries-Specificrequirementsforoffshorestruc-

tures-Part 7.Stationkeepingsystemsforfloatingoffshorestructuresandmobileoffshoreunits)

ISO.19905-1-On-site assessment of offshore mobile equipment in the oil and gas industry-Part 1.Jack-up platform (Petroleum

andnaturalgasindustries-Site-specificassessmentofmobileoffshoreunits-Part 1.Jack-ups)

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — all pages — is available in the English PDF.

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