IEC TS 62600-2:2019

Marine energy - Wave, tidal and other water current converters - Part 2: Marine energy systems - Design requirements

IEC TS 62600-2:2019 provides design requirements to ensure the engineering integrity of wave, ocean, tidal and river current energy converters, collectively referred to as marine energy converters. Its purpose is to provide an appropriate level of protection against damage from all hazards that may lead to catastrophic failure of the MEC structural, mechanical, electrical or control systems.
This document provides requirements for MEC main structure, appendages, seabed interface, mechanical systems and electrical systems as they pertain to the viability of the device under site-specific environmental conditions. This document applies to MECs that are either floating or fixed to the seafloor or shore and are unmanned during operational periods.
In addition to environmental conditions, this document addresses design conditions (normal operation, operation with fault, parked, etc.); design categories (normal, extreme, abnormal and transport); and limit states (serviceability, ultimate, fatigue and accidental) using a limit state design methodology. This second edition cancels and replaces the first edition published in 2016.
This edition includes the following significant technical changes with respect to the previous edition:
a) The second edition sets forth design conditions unique to marine energy converters.

General Information

• Status: Published
• Publication Date: 17-Oct-2019
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 27.140 - Hydraulic energy engineering
• Technical Committee: TC 114 - Marine energy - Wave, tidal and other water current converters
• Drafting Committee: MT 62600-2 - TC 114/MT 62600-2
• Current Stage: PPUB - Publication issued
• Start Date: 21-Oct-2019
• Completion Date: 18-Oct-2019

Relations

• Revises: IEC TS 62600-2:2016 - Marine energy - Wave, tidal and other water current converters - Part 2: Design requirements for marine energy systems
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC TS 62600-2 ®
Edition 2.0 2019-10
TECHNICAL
SPECIFICATION
colour
inside
Marine energy – Wave, tidal and other water current converters –
Part 2: Marine energy systems – Design requirements
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IEC TS 62600-2 ®
Edition 2.0 2019-10
TECHNICAL
SPECIFICATION
colour
inside
Marine energy – Wave, tidal and other water current converters –

Part 2: Marine energy systems – Design requirements

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 27.140 ISBN 978-2-8322-7420-0

– 2 – IEC TS 62600-2:2019 © IEC 2019
CONTENTS
FOREWORD . 7
INTRODUCTION . 9
1 Scope . 10
2 Normative references . 11
3 Terms and definitions . 13
4 Symbols and abbreviated terms . 13
5 Principal elements . 14
5.1 General . 14
5.2 Design objectives . 15
5.3 Technology assessment . 15
5.4 Risk assessment . 16
5.5 Safety levels . 17
5.6 Basis of design . 18
5.7 Environmental conditions . 18
5.8 Life cycle considerations . 18
5.9 Load definition and load combinations . 18
5.10 Limit state design . 19
5.11 Partial safety factors . 19
5.12 Structural modelling and analysis . 20
6 Environmental conditions . 20
6.1 General . 20
6.2 Primary environmental conditions . 20
6.2.1 General . 20
6.2.2 Waves . 20
6.2.3 Sea currents . 22
6.2.4 Water level . 24
6.3 Secondary environmental conditions . 25
6.3.1 General . 25
6.3.2 Breaking waves . 25
6.3.3 Breaking wave-induced surf currents . 26
6.3.4 Wind conditions . 26
6.3.5 Sea and river ice . 26
6.3.6 Earthquakes and tsunamis . 26
6.3.7 Marine growth . 27
6.3.8 Seabed movement and scour . 27
6.3.9 Other environmental conditions . 27
7 Design load cases . 27
7.1 General . 27
7.2 Load categories . 28
7.3 Design situations and load cases . 29
7.3.1 General . 29
7.3.2 Interaction with waves, currents, wind, water level and ice . 30
7.3.3 Design categories and conditions . 30
7.3.4 Limit states . 31
7.3.5 Partial safety factors . 32

7.3.6 Load case modelling and simulation . 33
7.3.7 Design conditions . 34
8 Materials . 43
8.1 General . 43
8.2 Material selection criteria . 44
8.3 Environmental considerations . 44
8.4 Structural materials . 45
8.4.1 General . 45
8.4.2 Metals . 45
8.4.3 Concrete . 46
8.4.4 Composites . 46
8.5 Compatibility of materials . 48
9 Structural integrity . 48
9.1 General . 48
9.2 Material models . 48
9.3 Partial safety factors for materials . 49
9.4 Design of steel structures . 49
9.4.1 General . 49
9.4.2 Steel partial safety factors . 49
9.5 Design of concrete structures. 50
9.5.1 General . 50
9.5.2 Concrete material partial safety factors . 50
9.5.3 Reinforcing steel . 51
9.6 Design of composite structures . 51
9.6.1 General . 51
9.6.2 Composite material partial safety factors . 51
9.6.3 Joints and interfaces . 53
10 Electrical, mechanical, instrumentation and control systems . 54
10.1 Overview. 54
10.2 General requirements . 54
10.3 Electrical . 54
10.3.1 General . 54
10.3.2 Electrical system design . 55
10.3.3 Protective devices . 55
10.3.4 Disconnect devices . 55
10.3.5 Earth system . 56
10.3.6 Lightning protection . 56
10.3.7 Electrical cables . 56
10.4 Mechanical . 57
10.4.1 General . 57
10.4.2 Bearings . 57
10.4.3 Gearing . 57
10.5 Piping systems . 57
10.5.1 General . 57
10.5.2 Bilge systems . 57
10.5.3 Ballast systems . 58
10.5.4 Hydraulic or pneumatic systems . 58
10.6 Instrumentation and control system . 58
10.6.1 General .
...