1、BSI Standards Publication PD ISO/TS 17920:2015 Fibre ropes for offshore stationkeeping AramidPD ISO/TS 17920:2015 PUBLISHED DOCUMENT National foreword This Published Document is the UK implementation of ISO/TS 17920:2015. The UK participation in its preparation was entrusted to Technical Committee T
2、CI/77, Ropes and cordage and fishing nets. 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 a contract. Users are responsible for its correct application. The British Standa
3、rds Institution 2015. Published by BSI Standards Limited 2015 ISBN 978 0 580 78727 0 ICS 59.080.50 Compliance with a British Standard cannot confer immunity from legal obligations. This Published Document was published under the authority of the Standards Policy and Strategy Committee on 31 August 2
4、015. Amendments issued since publication Date Text affectedPD ISO/TS 17920:2015 ISO 2015 Fibre ropes for offshore stationkeeping Aramid Cordages en fibres pour le maintien en position des structures marines Aramide TECHNICAL SPECIFICATION ISO/TS 17920 Reference number ISO/TS 17920:2015(E) First edit
5、ion 2015-0 8-01PD ISO/TS 17920:2015ISO/TS 17920:2015(E)ii ISO 2015 All rights reserved COPYRIGHT PROTECTED DOCUMENT ISO 2015, Published in Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, ele
6、ctronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Ch. de Blandonnet 8 CP 401 CH-1214 Ve
7、rnier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 copyrightiso.org www.iso.orgPD ISO/TS 17920:2015ISO/TS 17920:2015(E)Foreword v 1 Scope . 1 2 Normative references 1 3 T erms and definitions . 1 4 Materials . 2 4.1 Rope core material . 2 4.2 Rope cover material 2 4.3 Other materi
8、als . 2 5 Requirements Rope properties . 2 5.1 Minimum breaking strength . 2 5.2 Minimum core tenacity 3 5.3 Axial compression fatigue properties . 3 5.4 Particle ingress protection 3 5.5 Cyclic loading performance 3 6 Requirements Rope layout and construction 3 6.1 General . 3 6.2 Type of construct
9、ion 3 6.3 Rope core . 3 6.4 Protective cover 4 6.5 Terminations . 4 6.6 Length of rope 4 7 Rope testing . 5 7.1 Type testing . 5 7.1.1 General 5 7.1.2 Sampling 5 7.1.3 Breaking strength, core tenacity and stiffness tests 5 7.1.4 Axial compression fatigue properties test . 6 7.1.5 Torque properties t
10、ests 6 7.1.6 Linear density test 6 7.1.7 Cyclic loading (endurance) test . 6 7.1.8 Protective cover thickness . 6 7.1.9 Particle ingress protection 6 7.2 Testing of current production 6 7.2.1 Sampling and testing 6 7.2.2 Length measurement . 7 8 Report 7 8.1 Prototype rope 7 8.2 Current production .
11、 7 9 C ertification . 7 10 Marking, labelling, and packaging . 8 10.1 Marking . 8 10.2 Labelling . 8 10.3 Packaging . 8 Annex A (normative) Fibr e qualification and t esting . 9 Annex B (normative) Rope testing .12 Annex C (normative) Axial compression fatigue properties test .21 Annex D (informativ
12、e) Guidance for rope handling care .23 Annex E (informative) C ertificat e of c onformity Ar amid r opes for offshor e stationk eeping .34 ISO 2015 All rights reserved iii Contents PagePD ISO/TS 17920:2015ISO/TS 17920:2015(E)Annex F (informative) Commentary.35 Bibliography .41 iv ISO 2015 All rights
13、 reservedPD ISO/TS 17920:2015ISO/TS 17920:2015(E) Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each
14、 member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the Internationa
15、l Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different
16、types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives). Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not
17、 be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents). Any trade name used in this document is inf
18、ormation given for the convenience of users and does not constitute an endorsement. For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see
19、 the following URL: Foreword - Supplementary information The committee responsible for this document is ISO/TC 38, Textiles. ISO 2015 All rights reserved vPD ISO/TS 17920:2015PD ISO/TS 17920:2015Fibre ropes for offshore stationkeeping Aramid 1 Scope This Technical Specification specifies the main ch
20、aracteristics and test methods of new aramid fibre ropes used for offshore stationkeeping. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies.
21、 For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 139, Textiles Standard atmospheres for conditioning and testing ISO 1968, Fibre ropes and cordage Vocabulary ISO 2060, Textiles Yarn from packages Determination of linear density (mass per
22、unit length) by the skein method ISO 7500- 1, Metallic materials Verification of static uniaxial testing machines Part 1: Tension/compression testing machines Verification and calibration of the force-measuring system ISO 18692, Fibre ropes for offshore stationkeeping Polyester ASTM D1907, Test Meth
23、od for Linear Density of Yarn (Yarn Number) by the Skein Method ASTM D1776, Practice for Conditioning and Testing Textiles ASTM D6611, Standard Test Method for wet and dry Yarn-on-Yarn Abrasion resistance ASTM D7269, Test Methods for Tensile Testing of Aramid Yarns CI 1503, Test method for yarn-on-y
24、arn abrasion 3 T erms a nd definiti ons For the purposes of this document, the terms and definitions given in ISO 1968, ISO 18692, and the following apply. 3.1 aramid long-chain synthetic polyamide in which at least 85% of the amide linkages are attached directly to two aromatic rings SOURCE: ISO 19
25、68, 3.3.1, modified 3.2 axial compression fatigue failure mode for fibre rope such as aramid (3.1) under low tension or compression TECHNICAL SPECIFICATION ISO/TS 17920:2015(E) ISO 2015 All rights reserved 1PD ISO/TS 17920:2015ISO/TS 17920:2015(E) 4 Materials 4.1 Rope core material The aramid fibre
26、used in the core of the rope shall have an average tenacity of not less than 1,8 N/tex and in accordance with Annex A. Qualification and testing requirements are given in Annex A. 4.2 Rope cover material Where polyester yarn is used in the protective cover, its minimum tenacity shall be 0,73 N/tex.
27、4.3 Other materials Other materials employed in rope assembly shall be identified in the rope design/manufacturing specification. For each material, the following shall be specified, as applicable: a) base material; b) size (linear density, mass per unit area, ); c) relevant mechanical properties (t
28、enacity, stiffness, ). 5 Requirements Rope properties 5.1 Minimum breaking strength The minimum breaking strength (MBS) of the rope (spliced) when tested according to Annex B shall conform to Table 1. Table 1 Minimum breaking strength (MBS) Reference number a Minimum breaking strength kN 80 2 500 90
29、 3 100 100 3 900 106 4 400 112 5 000 118 5 600 125 6 300 132 7 000 140 7 800 150 8 700 160 10 000 170 11 200 180 12 500 aThe reference number corresponds to the approximate outer diameter of the rope, in millimetres (mm). Actual diameters may vary for a given reference number.2 ISO 2015 All rights r
30、eservedPD ISO/TS 17920:2015ISO/TS 17920:2015(E) Reference number a Minimum breaking strength kN 190 14 000 200 15 500 212 17 500 224 19 500 aThe reference number corresponds to the approximate outer diameter of the rope, in millimetres (mm). Actual diameters may vary for a given reference number. 5.
31、2 Minimum core tenacity The minimum tenacity of the aramid rope core shall be 0,90 N/tex measured according to Annex B. All samples tested shall comply with the minimum value specified herein. 5.3 Axial compression fatigue properties The rope shall have demonstrated 95 % retention of MBS following t
32、he axial compression fatigue test method in Annex C. 5.4 Particle ingress protection If specified, the rope shall be constructed with a protection of the core against the ingress of particles having a size greater than 20 m (microns) or as agreed between involved parties. Testing of the protection s
33、hall be performed in accordance with Annex B. 5.5 Cyclic loading performance The rope shall have demonstrated performance under cycling loading following the requirements of 7.1.7 and B.5. 6 Requirements Rope layout and construction 6.1 General The typical section of a rope shall comprise a rope cor
34、e providing intended strength and stiffness and a cover. 6.2 Type of construction The rope shall be of one of the following types of construction: torque-neutral construction (type TF); torque-matched construction (type TM). The type of rope shall be specified by the purchaser. NOTE Torque-neutral r
35、opes are intended for use in mooring systems together with chain or torque-neutral spiral strand wire ropes. Torque-matched ropes are intended for use in mooring systems together with six-strand wire ropes or other non torque-neutral wire ropes. Typical constructions are illustrated in Fig ure F. 3
36、and Fig ure F.4. 6.3 Rope core 6.3.1 The total number of yarns in the rope shall be at least the number specified in the rope design specification.Table 1 (continued) ISO 2015 All rights reserved 3PD ISO/TS 17920:2015ISO/TS 17920:2015(E) 6.3.2 Splices are not allowed in the rope core nor in sub-rope
37、s except for those at the end terminations. Strands shall be uninterrupted over the length of the rope with no splice or strand interchange. NOTE Yarns may be joined if necessary. 6.4 Protective cover 6.4.1 A protective cover shall be provided around the rope core to protect the rope core from mecha
38、nical damages during handling and in service. The protection shall be water-permeable. 6.4.2 A polyester braided protective cover shall have a minimum thickness, t, with t = 7,0 mm, for a reference number RN above 100, and t = 0,07 RN, but not less than 4 mm, for a reference number RN less than 100.
39、 Strand interchanges, i.e. the overlapping continuation of an interrupted strand with another identical strand following the same path, are permitted if they are properly staggered. 6.4.3 If an alternative protective cover is used, it shall demonstrate a level of protection equal to that of a polyes
40、ter braided cover. 6.4.4 A braided cover shall include coloured strands forming a pattern so that rope twist during installation or in service can be identified. There shall be a minimum of one “S” coloured strand and one “Z” coloured strand to form a cross on the rope. An alternative protective cov
41、er shall be fitted with an axial stripe of contrasting colour or other means to identify rope twist during installation or in service. 6.5 Terminations The terminations shall be made of an eye splice plus abrasion protection materials. NOTE There can be other terminations provided that they do not j
42、eopardize the rope performance. The dimensions and arrangement of the eye shall match the diameter and groove shape of the thimble (or other interface piece) to be used for end connections and shall be the same as for the rope prototype testing. In the splice area, the integrity and the continuity o
43、f rope cover and particle-ingress protection, if fitted, shall be preserved or restored. The eye and the splice area shall be further covered by an abrasion protection coating such as polyurethane. Each termination shall be made according to the manufacturing practice as described in the termination
44、 specification. 6.6 Length of rope The bedded-in lengths of the rope sections shall be calculated in accordance with 7.2.2 under 20 % of MBS unless otherwise agreed on the purchase order or contract. The calculated length of supplied rope shall be within 1 % of the specified length. For each supplie
45、d rope, the actual length at the reeling tension or during manufacture shall be reported as an indicative value. Adequate extra length shall be manufactured in order to prepare the samples for testing which are considered to be part of the delivery.4 ISO 2015 All rights reservedPD ISO/TS 17920:2015I
46、SO/TS 17920:2015(E) 7 Rope testing 7.1 Type testing 7.1.1 General Prototype tests shall demonstrate that ropes certified by the manufacturer as complying with the requirements laid down in this Technical Specification possess the properties specified in this Technical Specification. The purpose of t
47、hese tests is to verify the design, material, and method of manufacture of each size of finished rope including protective cover and terminations. All ropes to be prototype tested shall comply with all the other requirements laid down in this Technical Specification. The tests specified below shall
48、be carried out on a prototype rope for each size of rope, unless otherwise noted in this Clause. Any change in the design, material, method of manufacture, including protective cover and terminations which may lead to a modification of the properties as defined in Clause 5, shall require that the pr
49、ototype tests specified in this Technical Specification be carried out on the modified rope. 7.1.2 Sampling The number of rope samples to be tested is given in Table 2. Table 2 Number of samples for testing Test Number of samples Breaking strength, core tenacity, and stiffness 3 Axial compression fatigue 1 a Torque properties 1 b Linear density 1 Cyclic loading endurance 1 c aSee 7.1.4. bSee 7.1.5. cSee 7.1.7. 7.1.3 Breaking strength, core tenacity and stiffness tests 7.1.3.1 Three samples shall be
