1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationShips and marine technology Ships mooring and towing fittings Cruciform bollardsBS ISO 13797:2012National forewordThis British Standard is the UK implementation of ISO 13797:2012
2、.The UK participation in its preparation was entrusted by Technical CommitteeSME/32, Ships and marine technology - Steering committee, to PanelSME/32/-/4, Ships and marine technology - Outfitting and deck machinery.A list of organizations represented on this committee can be obtained onrequest to it
3、s secretary.This publication does not purport to include all the necessary provisions of acontract. Users are responsible for its correct application. The British Standards Institution 2012Published by BSI Standards Limited 2012ISBN 978 0 580 69755 5ICS 47.020.50Compliance with a British Standard ca
4、nnot confer immunity fromlegal obligations.This British Standard was published under the authority of the StandardsPolicy and Strategy Committee on 30 November 2012.Amendments issued since publicationAmd. No. Date Text affectedBRITISH STANDARDBS ISO 13797:2012 ISO 2012Ships and marine technology Shi
5、ps mooring and towing fittings Cruciform bollardsNavires et technologie maritime Corps-morts et ferrures de remorquage de navires CroisillonsINTERNATIONAL STANDARDISO13797First edition2012-07-01Reference numberISO 13797:2012(E)BS ISO 13797:2012ISO 13797:2012(E)ii ISO 2012 All rights reservedCOPYRIGH
6、T PROTECTED DOCUMENT ISO 2012All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or I
7、SOs member body in the country of the requester.ISO copyright officeCase postale 56 CH-1211 Geneva 20Tel. + 41 22 749 01 11Fax + 41 22 749 09 47E-mail copyrightiso.orgWeb www.iso.orgPublished in SwitzerlandBS ISO 13797:2012ISO 13797:2012(E) ISO 2012 All rights reserved iiiContents PageForeword iv1 S
8、cope 12 Normative references . 13 Terms and definitions . 14 Classification 14.1 Type . 14.2 Nominal sizes . 15 Dimensions . 16 Materials . 17 Construction . 28 Manufacturing and inspection . 29 Marking . 2Annex A (informative) Basis for strength assessment of cruciform bollards 5Bibliography . 7BS
9、ISO 13797:2012ISO 13797:2012(E)ForewordISO (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 member body interes
10、ted 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 International Electrotechnical C
11、ommission (IEC) on all matters of electrotechnical standardization.International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the techni
12、cal committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote.Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO sha
13、ll not be held responsible for identifying any or all such patent rights.ISO 13797 was prepared by Technical Committee ISO/TC 8, Ships and marine technology, Subcommittee SC 4, Outfitting and deck machinery.iv ISO 2012 All rights reservedBS ISO 13797:2012INTERNATIONAL STANDARD ISO 13797:2012(E)Ships
14、 and marine technology Ships mooring and towing fittings Cruciform bollards1 ScopeThis International Standard specifies the design, size and technical requirements for cruciform bollards suitable for installation on sea-going vessels to meet normal mooring and towing requirements.2 Normative referen
15、cesThe following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.IMO Circular MSC/Circ.1175, Guidance on shipboa
16、rd towing and mooring equipment3 Terms and definitionsFor the purposes of this document, the following terms and definitions apply.3.1safe working loadSWLmaximum load in kN on the rope that should normally be applied in service conditions4 Classification4.1 TypeDepending on the manufacturing method,
17、 cruciform bollards shall be classified as the following two types: Type A manufactured by steel pipes; Type B manufactured by steel plates.4.2 Nominal sizesThe nominal sizes, Dn, of cruciform bollards are denoted by reference to the outside diameter of the main post in millimetres, in terms of the
18、nearest number drawn from a basic series of preferred numbers.The nominal sizes are: 150, 200, 250, 300, 350 and 400.5 DimensionsCruciform bollards have dimensions and particulars in accordance with Table 1 and Figure 1.6 MaterialsThe materials of the following components shall be used for manufactu
19、ring the cruciform bollards: Plates: weldable steel plates having a yield point of not less than 235 N/mm2. ISO 2012 All rights reserved 1BS ISO 13797:2012ISO 13797:2012(E) Tubes: weldable steel tubes having a yield point of not less than 215 N/mm2or equivalent.7 ConstructionThe posts of the crucifo
20、rm bollards shall be constructed from steel tubes or formed from plate.8 Manufacturing and inspection8.1 All surfaces of the cruciform bollards, including welding, shall be free from any visible flaws or imperfections.8.2 All surfaces in contact with the ropes shall be free from surface roughness or
21、 irregularities likely to cause damage to the ropes by abrasion.8.3 The cruciform bollards shall be coated externally with an anti-corrosion protective finish.9 Marking9.1 The safe working load (SWL) intended for the use of the cruciform bollards shall be noted in the towing and mooring plan availab
22、le on board for the guidance of the shipmaster, as specified in MSC/Circ.1175.9.2 The actual SWL on board shall be determined considering the under deck reinforcement, and marked on the towing and mooring plan. The actual SWL shall not be over the SWL indicated in this International Standard.9.3 The
23、 cruciform bollards shall be clearly marked with its SWL by weld bead or equivalent. The SWL shall be expressed in tonnes (letter t) and be placed so that it is not obscured during operation of the fitting.EXAMPLE SWL XX t2 ISO 2012 All rights reservedBS ISO 13797:2012ISO 13797:2012(E)Dimensions in
24、millimetresKey1 main post2 cross pipe3 closing plate of main post4 closing plates of cross pipeaSWL marking.bDeck.cReinforcement.Figure 1 Cruciform bollards ISO 2012 All rights reserved 3BS ISO 13797:2012ISO 13797:2012(E)Table 1 Dimensions and SWL of cruciform bollardsDimensions in millimetresNomina
25、l sizeDnType l D1D2T1T2H hWelding leg lengthaSWLbCalculated weightc(kg)z (kN) (t)150Type A 350 165,2 114,3 11,0 8,6 450 225 6 78 8 37Type B 350 170,0 120,0 8,0 8,0 450 225 5 78 8 31200Type A 450 216,3 165,2 12,7 11,0 500 250 7 147 15 58Type B 450 220,0 170,0 10,0 8,0 500 250 7 147 15 48250Type A 575
26、 267,4 216,3 15,1 12,7 600 300 8 245 25 92Type B 575 270,0 220,0 13,0 10,0 600 300 8 245 25 81300Type A 625 318,5 267,4 17,4 15,1 600 300 10 392 40 132Type B 625 320,0 270,0 15,0 12,0 600 300 9 392 40 115350Type A 670 355,6 267,4 19,0 15,1 600 350 10 491 50 150Type B 670 360,0 270,0 16,0 12,0 600 35
27、0 9 491 50 130400Type A 720 406,4 267,4 21,4 15,1 600 350 10 736 75 178Type B 720 410,0 270,0 19,0 14,0 600 350 9 736 75 165aWelding with chamfering is available based on the same welding volume/strength.bSWL is the maximum applicable rope tension.SWLs shown in this table are for reference only. The
28、se are based on the loadings as mentioned in Annex A.cCalculated weight is for reference only.4 ISO 2012 All rights reservedBS ISO 13797:2012ISO 13797:2012(E)Annex A (informative) Basis for strength assessment of cruciform bollardsA.1 GeneralThe strength of the cruciform bollards was evaluated by si
29、mple beam theory calculation and determined based on the following design criteria.A.2 LoadingA.2.1 The cruciform bollards are to be designed to withstand the loads imposed by the mooring and/or towing ropes.A.2.2 The cruciform bollards are to be designed to withstand the following load case.It is t
30、o be designed to withstand the combined load of bending force and shear force produced by P imposed at the position above the cross pipe.KeyP mooring force or towing forced diameter of ropehP h + (D2/2) + (d/2)aDeck.Figure A.1 Combined load by towing ropeA.3 Load and stress criteriaUnder the SWL, th
31、e following stress criteria were adopted: The bending stress is limited to 85 % of the yield stress of the material. The shear stress is limited to 60 % of the yield stress of the material. The combined stress is limited to 100 % of the yield stress of the material.A.4 Wear-down allowances and corro
32、sion additionsA.4.1 Wear-down allowancesFor the strength calculation, the wear-down of 2 mm is to be deducted from the gross thickness, where the rope is rubbing the surface. ISO 2012 All rights reserved 5BS ISO 13797:2012ISO 13797:2012(E)A.4.2 Corrosion additionsThe corrosion margin was already inc
33、luded in the safety factor and 2 mm wear-down allowance.6 ISO 2012 All rights reservedBS ISO 13797:2012ISO 13797:2012(E)Bibliography1 IACS UR A2, Shipboard fittings and supporting hull structures associated with towing and mooring on conventional vessels2 OCIMF, Mooring Equipment Guidelines (MEG3)3
34、ISO 2408, Steel wire ropes for general purposes Minimum requirements ISO 2012 All rights reserved 7BS ISO 13797:2012This page deliberately left blankThis page deliberately left blankBSI is the independent national body responsible for preparing British Standards and other standards-related publicati
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