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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
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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 .
...