1、BSI Standards Publication Marine energy Wave, tidal and other water current converters Part 10: Assessment of mooring system for marine energy converters (MECs) PD IEC/TS 62600-10:2015National foreword This Published Document is the UK implementation of IEC/TS 62600- 10:2015. The UK participation in
2、 its preparation was entrusted to Technical Committee PEL/114, Marine energy Wave, tidal and other water current converters. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of
3、 a contract. Users are responsible for its correct application. The British Standards Institution 2015. Published by BSI Standards Limited 2015 ISBN 978 0 580 83342 7 ICS 27.140 Compliance with a British Standard cannot confer immunity from legal obligations. This Published Document was published un
4、der the authority of the Standards Policy and Strategy Committee on 31 August 2015. Amendments/corrigenda issued since publication Date Text affected PUBLISHED DOCUMENT PD IEC/TS 62600-10:2015 IEC TS 62600-10 Edition 1.0 2015-03 TECHNICAL SPECIFICATION Marine energy Wave, tidal and other water curre
5、nt converters Part 10: Assessment of mooring system for marine energy converters (MECs) INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 27.140 ISBN 978-2-8322-2431-1 Registered trademark of the International Electrotechnical Commission Warning! Make sure that you obtained this publication from an auth
6、orized distributor. colour inside PD IEC/TS 62600-10:2015 2 IEC TS 62600-10:2015 IEC 2015 CONTENTS FOREWORD. 6 INTRODUCTION . 8 1 Scope 9 2 Normative references 9 3 Terms and definitions 9 4 Abbreviated terms . 11 5 Principal element . 12 5.1 General . 12 5.2 Mooring and anchor systems . 12 5.3 Desi
7、gn considerations . 12 5.4 Safety and risk consideration . 13 5.5 Analysis procedure 13 5.6 Inspection and maintenance requirements . 13 6 Types of moorings and anchoring systems . 13 6.1 General . 13 6.2 Mooring systems . 13 6.2.1 General . 13 6.2.2 Spread moorings (catenary, taut-line and semi-tau
8、t-line) . 13 6.2.3 Single point moorings (SPM) 14 6.3 Mooring line components . 15 6.3.1 General . 15 6.3.2 Chain . 15 6.3.3 Wire rope . 16 6.3.4 Synthetic rope 17 6.3.5 Clump weights . 17 6.3.6 Buoyancy aids . 17 6.3.7 Connectors and accessories . 17 6.4 Anchors types . 18 6.4.1 General . 18 6.4.2
9、Drag embedment anchor 18 6.4.3 Pile anchor 19 6.4.4 Suction anchor . 19 6.4.5 Gravity installed anchor 20 6.4.6 Gravity anchor . 20 6.4.7 Plate anchor 21 6.4.8 Screw anchor . 21 7 Design consideration . 22 7.1 General . 22 7.2 Limit states . 22 7.2.1 Ultimate limit state (ULS) . 22 7.2.2 Accidental
10、limit state (ALS) 22 7.2.3 Serviceability limit state (SLS) 22 7.2.4 Fatigue limit state (FLS) . 22 7.3 External conditions 23 7.3.1 General . 23 7.3.2 Metocean conditions 23 PD IEC/TS 62600-10:2015IEC TS 62600-10:2015 IEC 2015 3 7.3.3 Marine growth 23 7.3.4 Marine life 23 7.3.5 Environmentally sens
11、itive and protected areas and marine animals . 23 7.3.6 Nearshore impact . 23 7.3.7 Vandalism and misuse . 23 7.3.8 Marine traffic 24 7.4 Assorted loading . 24 7.4.1 General . 24 7.4.2 Low frequency loads 24 7.4.3 Wave frequency loads on mooring components 24 7.4.4 Wave frequency loads on MEC . 25 7
12、.4.5 High frequency loading . 25 7.5 Mooring line components . 25 7.5.1 Component strength . 25 7.5.2 Component fatigue life . 25 7.5.3 Redundancy . 25 7.5.4 Clearance 25 7.6 Umbilical considerations 26 7.6.1 Umbilical response . 26 7.6.2 Umbilical strength 26 7.6.3 Umbilical offset and clearance li
13、mits . 26 7.7 Anchors 26 7.7.1 Type selection . 26 7.7.2 Holding capacity 26 7.7.3 Sediment and rock conditions . 26 7.7.4 Fluke setting 27 7.7.5 Installation . 27 7.7.6 Proof loading . 27 7.7.7 Directional anchor loading 27 7.7.8 Failure mode 27 7.7.9 Environmental loading 27 8 Safety and risk cons
14、iderations . 27 8.1 Overview 27 8.2 Risk 27 8.2.1 General . 27 8.2.2 Definition . 28 8.2.3 Consequence types 28 8.2.4 General risk mitigation . 28 8.2.5 ALARP principle . 28 8.3 Risk assessment methodology . 28 8.3.1 General . 28 8.3.2 Methodology flowchart . 29 8.3.3 Basic considerations 30 8.3.4 P
15、robability assessment 31 8.3.5 Consequence classification assessment . 31 8.4 Consequence considerations for mooring failure 31 8.5 Consequence classification . 31 8.5.1 General . 31 8.5.2 Consequence impact considerations . 32 PD IEC/TS 62600-10:2015 4 IEC TS 62600-10:2015 IEC 2015 8.5.3 Waterway n
16、avigation impacts . 33 8.5.4 Environmentally sensitive and protected sites . 33 8.5.5 Archaeological sites . 33 8.6 Risk mitigation considerations . 33 8.6.1 Mitigation overview 33 8.6.2 Probability reduction 33 8.6.3 Consequence reduction 33 8.7 Risk acceptance 34 8.7.1 Acceptance overview . 34 8.7
17、.2 Documentation . 34 9 Analysis procedure 34 9.1 General . 34 9.2 Basic considerations . 34 9.3 Analysis procedure overview . 35 9.4 Modelling consideration . 36 9.4.1 General . 36 9.4.2 Mooring and umbilical models 36 9.4.3 Floating unit numerical models . 36 9.4.4 Coupled and uncoupled analysis 3
18、7 9.5 Analysis procedure considerations . 37 9.5.1 Metocean directionality 37 9.5.2 Resonant response 37 9.5.3 Dynamic mooring analysis 37 9.5.4 Design situations of ULS 38 9.5.5 Design situations of ALS 38 9.5.6 Design situations of FLS 38 9.5.7 Design situations of SLS 38 9.6 Mooring design criter
19、ia 38 9.6.1 Design return period 38 9.6.2 Consequence class design factor . 38 9.6.3 Mooring line component failure . 39 9.6.4 Anchor holding capacity . 39 10 In-service inspection, monitoring, testing, and maintenance 40 10.1 General . 40 10.2 Mooring system proof loading 41 10.3 Component replacem
20、ent 41 10.4 In air and splash zone mooring line sections 41 10.5 Submerged mooring line sections 41 10.6 Commissioning and decommissioning procedures 42 Annex A (informative) Sample mooring design 43 A.1 General . 43 A.2 Problem layout 43 A.3 Consequence class identification . 44 A.4 Mooring design
21、process 47 Bibliography . 50 Figure 1 Spread mooring configuration . 14 Figure 2 Catenary anchor leg mooring configuration . 14 PD IEC/TS 62600-10:2015IEC TS 62600-10:2015 IEC 2015 5 Figure 3 Single anchor leg mooring configuration . 15 Figure 4 Turret mooring configuration . 15 Figure 5 Studless an
22、d studlink chain 16 Figure 6 Typical wire rope construction 16 Figure 7 Types of connectors . 18 Figure 8 HHP drag embedment anchor . 19 Figure 9 Pile anchor . 19 Figure 10 Suction anchor . 20 Figure 11 Gravity installed anchor 20 Figure 12 Gravity anchor 21 Figure 13 Plate anchor . 21 Figure 14 Scr
23、ew anchor . 22 Figure 15 General risk methodology flowchart 30 Figure 16 Conceptual mooring analysis procedure 35 Figure A.1 Potential tidal current MEC installation locations A, B; artificial reef C; fish farm D; marine traffic corridor E 43 Figure A.2 Mooring line component minimum ASF for each re
24、turn period environment 5, 10, 20, 50, and 100 plotted to determine mooring ULS return period 48 Figure A.3 Anchor minimum ASF for each return period environment 5, 10, 20, 50, and 100 plotted to determine anchor ULS return period . 48 Table 1 Potential nearshore impacts . 23 Table 2 Consequence cat
25、egories . 31 Table 3 Consequence class . 32 Table 4 Consequence class associated design factors 39 Table 5 Safety factors for ULS and ALS conditions . 39 Table 6 Safety factors for holding capacity of drag anchors factors . 40 Table 7 Safety factors for holding capacity of anchor piles and suction p
26、iles . 40 Table 8 Safety factors for holding capacity of gravity and plate anchors 40 Table A.1 Consequence classification matrix: location A 45 Table A.2 Consequence classification matrix: location B . 46 PD IEC/TS 62600-10:2015 6 IEC TS 62600-10:2015 IEC 2015 INTERNATIONAL ELECTROTECHNICAL COMMISS
27、ION _ MARINE ENERGY WAVE, TIDAL AND OTHER WATER CURRENT CONVERTERS Part 10: Assessment of mooring system for marine energy converters (MECs) FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical commit
28、tees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical
29、Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may participate in this preparatory work. International, governmental a
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32、d are accepted by IEC National Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any misinterpretation by any end user. 4) In order to promote
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34、 in the latter. 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any services carried out by independent certification bodies. 6) All
35、 users should ensure that they have the latest edition of this publication. 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and members of its technical committees and IEC National Committees for any personal injury, property damage or
36、 other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications. 8) Attention is drawn to the Normative references cited in this publicati
37、on. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such p
38、atent rights. The main task of IEC technical committees is to prepare International Standards. In exceptional circumstances, a technical committee may propose the publication of a technical specification when the required support cannot be obtained for the publication of an International Standard, d
39、espite repeated efforts, or the subject is still under technical development or where, for any other reason, there is the future but no immediate possibility of an agreement on an International Standard. Technical specifications are subject to review within three years of publication to decide wheth
40、er they can be transformed into International Standards. IEC TS 62600-10, which is a technical specification, has been prepared by IEC technical committee 114: Marine energy Wave, tidal and other water current converters. PD IEC/TS 62600-10:2015IEC TS 62600-10:2015 IEC 2015 7 The text of this techni
41、cal specification is based on the following documents: Enquiry draft Report on voting 114/140/DTS 114/150A/RVC Full information on the voting for the approval of this technical specification can be found in the report on voting indicated in the above table. This publication has been drafted in accor
42、dance with the ISO/IEC Directives, Part 2. The committee has decided that the contents of this publication will remain unchanged until the stability date indicated on the IEC website under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be
43、transformed into an International standard, reconfirmed, withdrawn, replaced by a revised edition, or amended. A bilingual version of this publication may be issued at a later date. IMPORTANT The colour inside logo on the cover page of this publication indicates that it contains colours which are co
44、nsidered to be useful for the correct understanding of its contents. Users should therefore print this document using a colour printer. PD IEC/TS 62600-10:2015 8 IEC TS 62600-10:2015 IEC 2015 INTRODUCTION This technical specification defines rules and assessment procedures for the design, installati
45、on and maintenance of mooring system with respect to technical requirements for floating marine energy converters. The proposed work will aim to bring together expert knowledge from the marine energy power and offshore engineering industries in order to formulate a guideline specification of the des
46、ign, installation and maintenance requirements for mooring system of floating MECs. In addition to safety and ocean environmental requirements, this technical specification focuses on the strength requirements of mooring systems for MECs. PD IEC/TS 62600-10:2015IEC TS 62600-10:2015 IEC 2015 9 MARINE
47、 ENERGY WAVE, TIDAL AND OTHER WATER CURRENT CONVERTERS Part 10: Assessment of mooring system for marine energy converters (MECs) 1 Scope The purpose of this Technical Specification is to provide uniform methodologies for the design and assessment of mooring systems for floating MECs (as defined in T
48、C114 scope). It is intended to be applied at various stages, from mooring system assessment to design, installation and maintenance of floating MEC plants. This technical specification is applicable to mooring systems for floating MEC units of any size or type in any open water conditions. Some aspe
49、cts of the mooring system design process are more detailed in existing and well-established mooring standards. The intent of this technical specification is to highlight the different requirements of MECs and not duplicate existing standards or processes. While requirements for anchor holding capacity are indicated, detailed geotechnical analysis and design of anchors are beyond the scope of this technical specification. 2 Normative
