1、BSI Standards PublicationBS EN ISO 4375:2014Hydrometry Cablewaysystems for stream gauging(ISO 4375:2014)BS EN ISO 4375:2014 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO 4375:2014.It supersedes BS EN ISO 4375:2004 which is withdrawn.The UK participation in
2、 its preparation was entrusted to TechnicalCommittee CPI/113/1, Hydrometric methods and instrumentation.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are r
3、esponsible for its correctapplication. The British Standards Institution 2014. Published by BSI StandardsLimited 2014ISBN 978 0 580 74832 5ICS 17.120.20Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStanda
4、rds Policy and Strategy Committee on 30 November 2014.Amendments issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 4375 November 2014 ICS 17.120.20 Supersedes EN ISO 4375:2004English Version Hydrometry - Cableway systems for stream gauging (ISO 4375:2
5、014) Hydromtrie - Systmes de suspension par cbles ariens pour le jaugeage en rivire (ISO 4375:2014) Hydrometrische Messungen - Seilkrananlagen fr Messungen in Fliegewssern (ISO 4375:2014) This European Standard was approved by CEN on 20 September 2014. CEN members are bound to comply with the CEN/CE
6、NELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre
7、 or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the o
8、fficial versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlan
9、ds, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2014 CEN All rights
10、of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 4375:2014 EBS EN ISO 4375:2014EN ISO 4375:2014 (E) 3 Foreword This document (EN ISO 4375:2014) has been prepared by Technical Committee ISO/TC 113 “Hydrometry” in collaboration with Technical Co
11、mmittee CEN/TC 318 “Hydrometry” the secretariat of which is held by BSI. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by May 2015, and conflicting national standards shall be withdrawn at the late
12、st by May 2015. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN ISO 4375:2004. According to the CEN-CENELE
13、C Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Icel
14、and, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 4375:2014 has been approved by CEN as EN ISO 4375:2014 without any modification
15、. BS EN ISO 4375:2014ISO 4375:2014(E) ISO 2014 All rights reserved iiiContents PageForeword iv1 Scope . 12 Normative references 13 Terms and definitions . 14 General description of a cableway system . 14.1 Elements of a cableway system 14.2 Cableway supports 34.3 Main track or main cable 34.4 Anchor
16、age . 34.5 Tow cable for a bankside system . 34.6 Suspension cable . 34.7 Instrument carriage for a bankside system . 44.8 Personnel carriage . 44.9 Winch arrangements for a bankside system . 44.10 Winch arrangements for a personnel carriage . 44.11 Lightning protection. 45 Functional requirements o
17、f cableway components . 45.1 Safety factors 45.2 Cableway supports 55.3 Selection of main cable or track . 65.4 Anchorage . 65.5 Backstays 65.6 Tow cable . 65.7 Carriages. 65.8 Winches . 76 Maintenance, examination and testing . 96.1 General examination 96.2 Routine inspection . 96.3 Static testing
18、96.4 Lubrication 106.5 Checking the sag . 10Annex A (informative) Cableway characteristics 11Annex B (informative) Limiting main cable tension in bankside cableways .22Bibliography .24BS EN ISO 4375:2014ISO 4375:2014(E)ForewordISO (the International Organization for Standardization) is a worldwide f
19、ederation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that co
20、mmittee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document
21、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 types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, P
22、art 2. www.iso.org/directivesAttention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the do
23、cument will be in the Introduction and/or on the ISO list of patent declarations received. www.iso.org/patentsAny trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expr
24、essions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT), see the following URL: Foreword - Supplementary informationThe committee responsible for this document is ISO/TC 113, Hydrometric determinations, Subc
25、ommittee SC 5, Instruments, equipment and data management.This third edition cancels and replaces the second edition (ISO 4375:2000), which has been technically revised.iv ISO 2014 All rights reservedBS EN ISO 4375:2014INTERNATIONAL STANDARD ISO 4375:2014(E)Hydrometry Cableway systems for stream gau
26、ging1 ScopeThis International Standard defines the requirements for equipment, anchorage, supports and accessories for cableway systems for use in stream gauging. Systems which are operated either entirely from the river bank or from a suspended personnel carriage (also called a “cable car”) are dis
27、cussed. This International Standard is only applicable to the cableway systems to be used for hydrometric measurements. Should the cableway installation be required to be certified as lifting equipment, other standards or regulations may apply. This International Standard does not concern methods fo
28、r making a discharge measurement which are described in ISO 748.2 Normative referencesThe 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. For undated references, the
29、 latest edition of the referenced document (including any amendments) applies.ISO 772, Hydrometry Vocabulary and symbolsISO 80000-4, Quantities and units Part 4: Mechanics3 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO 772, ISO 80000-4 and the followi
30、ng apply.3.1cablewire rope of simple or complex structure or wire cord, fixed or moving in a cableway system4 General description of a cableway system4.1 Elements of a cableway systemA cableway system can be designed to be operated from the river bank (see Figures 1 and 2) or be designed to be opera
31、ted from a suspended personnel carriage (see Figure 3). The general arrangement of the following elements are common to both systems:a) towers or cableway supports;b) track or main cable;c) anchorage;d) backstays;e) suspension cable.The main differences are: the carriage of a bankside system require
32、s a tow cable; a bankside system requires a more complicated winch arrangement; ISO 2014 All rights reserved 1BS EN ISO 4375:2014ISO 4375:2014(E) the personnel carriage has to provide a safe platform for the operator; more stringent design requirements may apply to a system which employs a personnel
33、 carriage.Key1 backstay 7 distance measurement2 traversing cable return pulley 8 depth measurement3 track or main cable 9 cable drum4 traveller and/or instrument carriage10 footing5 current meter 11 ground level6 sinker or sounding weightFigure 1 Cableway system Bankside operation, with loop-travers
34、ing cable and spooled sounding cableKey1 track or main cable 4 footing2 suspension cable 5 ground level3 tow cableFigure 2 Cableway system Bankside operation, with spooled tow cable and spooled sounding cable2 ISO 2014 All rights reservedBS EN ISO 4375:2014ISO 4375:2014(E)Key1 tower 7 to anchorage2
35、suspension cable 8 stayline3 personnel carriage 9 footing4 track or main cable 10 anchorage5 current meter 11 ground level6 sounding weightFigure 3 Cableway system Suspended personnel carriage4.2 Cableway supportsThe cableway supports, one on each bank, support the main cable span across the stream.
36、 They may also provide mountings for the winch and the pulleys (sheaves) carrying the tow and suspension cables.4.3 Main track or main cableThe track or main cable is designed to carry the whole suspended load. The track may be attached directly to stayed cableway supports or be supported on saddles
37、 on the cableway supports and led directly to an anchorage.4.4 AnchorageAnchorages are required to carry the loads induced in the cableway and tower system. Depending upon the design of the system, they may be anchorage points for track and backstays or guy-lines, tower foundations subject to compre
38、ssion or tower foundations subject to compression and moment.4.5 Tow cable for a bankside systemThe tow cable is required to move and position the instrument carriage. Generally the tow cable is arranged as an endless loop from the instrument carriage over guiding sheaves on the winch tower, round a
39、 driving pulley or drum, across to an idler pulley (sheave) on the tower on the opposite bank and back to the carriage (see Figure 1). An alternate arrangement uses a spooled tow cable with a single fixing point on the carriage. This arrangement depends upon the equal and opposite force provided by
40、the suspension cable (see Figure 2).4.6 Suspension cableThe suspension cable provides the means of raising and lowering sensing or sampling equipment in the stream. The free end of the cable is fitted with connectors to attach equipment and sounding weights. The suspension cable is likely to contain
41、 an insulated conducting core to provide a signal path from suspended instruments. ISO 2014 All rights reserved 3BS EN ISO 4375:2014ISO 4375:2014(E)4.7 Instrument carriage for a bankside systemThe instrument carriage is provided with one or more track wheels running on the main cable (track), a pull
42、ey to support the suspension cable and a point of attachment for the tow (traveller) cable.4.8 Personnel carriageThe carriage from which gauging observations are made, travels along the main cable. It is suspended from track wheels running on the main cable. The carriage may be moved along the main
43、cable manually or by a power unit. The carriage can be designed to be operated from either the standing or sitting position or both. A cableway employing a personnel carriage shall comply with the safety requirements for passenger cableways where such standards exist specially for horizontal fixed c
44、ableways, in all aspects not covered by this International Standard.4.9 Winch arrangements for a bankside systemA double drum winch is one that provides both traversing and sounding functions within one piece of equipment. One drum controls the suspension cable, the other controls the movement of th
45、e carriage. The latter may be a spooling drum or take the form of a friction drive pulley driving an “endless” loop. Both drums may be driven simultaneously in traversing mode or, in sounding mode, the traversing drum may be locked to allow operation of the suspension cable drum only. This operation
46、 may also be carried out using two single drum winches. Measuring counters may be fitted to record horizontal and vertical cable movement.4.10 Winch arrangements for a personnel carriageA winch (sounding reel) is attached to the carriage (cable car) to raise and lower the sounding weight. The winch
47、is required to operate properly under the load of the sounding weight but both the winch and its mountings should be capable of accommodating the breaking load of the suspension cable with a factor of safety (FoS) of two. The winch may be hand operated or power driven.4.11 Lightning protectionIn are
48、as where electrical storms are considered a risk to cableway operators, provision shall be made to reduce the likelihood of injury from a lightning strike on the cableway system. In countries where lightning is infrequent and lightning protection not considered necessary, work instructions should al
49、low for abandonment of operations in the event of an electrical storm.5 Functional requirements of cableway components5.1 Safety factors5.1.1 GeneralFactors of safety shall be applied to ensure that the equipment is able to cope with normal working without failure and to protect the operator in case of abnormal but foreseeable incidents.The most likely risk of failure of properly maintained cableway systems lies with the possibility of the suspended equipment becoming caught up on a large floating object. Trees being carried down in
