1、BRITISH STANDARD BS EN 12927-2:2004 Safety requirements for cableway installations designed to carry persons Ropes Part 2: Safety factors The European Standard EN 12927-2:2004 has the status of a British Standard ICS 45.100 BS EN 12927-2:2004 This British Standard was published under the authority o
2、f the Standards Policy and Strategy Committee on 1 November 2004 BSI 1 November 2004 ISBN 0 580 44689 1 National foreword This British Standard is the official English language version of EN 12927-2:2004. The UK participation in its preparation was entrusted to Technical Committee MCE/20, Aerial rop
3、eways, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue unde
4、r the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct appl
5、ication. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; m
6、onitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 12, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates
7、when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN129272 October2004 ICS45.100 Englishversion Safetyrequirementsforcablewayinstallationsdesignedtocarry personsRopesPart2:Safetyfactors Prescriptionsdescuritdes
8、installationscbles transportantdespersonnesCblesPartie2: Coefficientsdescurit SicherheitsanforderungenfrSeilbahnenund SchleppaufzgeimPersonenverkehrSeileTeil2: Sicherheitsfaktoren ThisEuropeanStandardwasapprovedbyCENon23August2004. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhich
9、stipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheCentralSecretariatortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English
10、,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheCentralSecretariathasthesamestatusast heofficial versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,Cyprus,CzechRepublic,Denmark,Estonia,Finland,France, Ge
11、rmany,Greece,Hungary,Iceland,Ireland,Italy,Latvia,Lithuania,Luxembourg,Malta,Netherlands,Norway,Poland,Portugal, Slovakia, Slovenia,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B
12、1050Brussels 2004CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN129272:2004:EEN 12927-2:2004 (E) 2 Contents Foreword3 1 Scope 5 2 Normative references 5 3 Terms and definitions .6 4 General requirements6 4.1 Application of this standard .6 4.2 Safe
13、ty principle 6 5 Safety requirements 7 5.1 General7 5.2 Safety factors .7 5.3 Bending ratio9 Annex A (informative) Adeviations11 Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 2000/9/EC relating to cableway installations designed to
14、carry persons .12 EN 12927-2:2004 (E) 3 Foreword This document (EN 12927-2:2004) has been prepared by Technical Committee CEN/TC 242 “Safety requirements for passenger transportation by rope”, the secretariat of which is held by AFNOR. This European Standard shall be given the status of a national s
15、tandard, either by publication of an identical text or by endorsement, at the latest by April 2005, and conflicting national standards shall be withdrawn at the latest by April 2005. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade A
16、ssociation, and supports essential requirements of EU Directive(s). For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document. This EN 12927 includes the following parts under the general title “ Safety requirements for cableway installations designe
17、d to carry persons Ropes“ : Part 1: Selection criteria for ropes and their end fixings Part 2: Safety factors Part 3: Long splicing of 6 strand hauling, carrying-hauling and towing ropes Part 4: End fixings Part 5: Storage, transportation, handling and tensioning Part 6: Discard criteria Part 7: Ins
18、pection, repair and maintenance Part 8: Magnetic rope testing (MRT). This European Standard forms part of the standards programme adopted by the CEN Technical Board in relation of safety requirements for passenger transportation by rope. This programme includes the following standards: 1) Safety req
19、uirements for cableway installations designed to carry persons - Terminology 2) Safety requirements for cableway installations designed to carry persons - General requirements 3) Safety requirements for cableway installations designed to carry persons Calculations 4) Safety requirements for cableway
20、 installations designed to carry persons - Ropes 5) Safety requirements for cableway installations designed to carry persons - Tensioning devices 6) Safety requirements for cableway installations designed to carry persons - Drive systems and other mechanical equipment 7) Safety requirements for cabl
21、eway installations designed to carry persons Carriers 8) Safety requirements for cableway installations designed to carry persons - Electrical equipment other than for drive systems 9) Safety requirements for cableway installations designed to carry persons - Civil engineering works EN 12927-2:2004
22、(E) 4 10) Safety requirements for cableway installations designed to carry persons Pre-commissioning inspection, maintenance and operational inspection and checks 11) Safety requirements for cableway installations designed to carry persons Recovery and evacuation 12) Safety requirements for cableway
23、 installations designed to carry persons - Operation 13) Safety requirements for cableway installations designed to carry persons - Quality assurance Together these form a series of standards regarding design, manufacture, production, maintenance and operation of all installations for passenger tran
24、sportation by rope. In respect of ski-tows, the drafting of this European Standard has been guided by the works of the International Organisation for Transportation by rope (OITAF). According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are
25、 bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and
26、United Kingdom EN 12927-2:2004 (E) 5 1 Scope This part of EN 12927 specifies the safety requirements applicable for safety factors for steel wire ropes (tensile safety factor, bending ratio and transverse force factors) for installations for passenger transportation by rope. This standard is applica
27、ble to the various types of installations and takes into account their environment. This part of EN 12927 does not apply to brake ropes. Some requirements concern synthetic ropes. The requirements relating to the protection of workers are not included in this standard. It does not apply to ropes for
28、 installations used for the transportation of goods, nor to inclined lifts. 2 Normative references The 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 refere
29、nced document (including any amendments) applies. EN 1709, Safety requirements for cableway installations designed to carry persons - Pre-commissioning inspection, maintenance, operational inspection and checks. prEN 1907:2004, Safety requirements for cableway installations designed to carry persons
30、 Terminology. EN 1908, Safety requirements for cableway installations designed to carry persons Tensioning devices. EN 1909, Safety requirements for cableway installations designed to carry persons - Recovery and evacuation. EN 12385-2:2002, Steel wire ropes Safety Part 2: Definitions, designation a
31、nd classification. EN 12397, Safety requirements for cableway installations designed to carry persons Operation. EN 12408, Safety requirements for cableway installations designed to carry persons - Quality assurance. EN 12927-1, Safety requirements for cableway installations designed to carry person
32、s Ropes Part 1: Selection criteria for ropes and their end fixings. EN 12927-3, Safety requirements for cableway installations designed to carry persons Ropes Part 3: Long splicing of 6 strand hauling, carrying-hauling and towing ropes. EN 12927-4, Safety requirements for cableway installations desi
33、gned to carry persons Ropes Part 4: End fixings. EN 12927-5, Safety requirements for cableway installations designed to carry persons Ropes Part 5: Storage, transportation, installation and tensioning. EN 12927-6, Safety requirements for cableway installations designed to carry persons - Ropes Part
34、6: Discard criteria. EN 12929-7, Safety requirements for cableway installations designed to carry persons Ropes Part 7: Inspection, repair and maintenance. EN 12927-8, Safety requirements for cableway installations designed to carry persons Ropes Part 8: Magnetic rope testing (MRT). EN 12929-1, Safe
35、ty requirements for passenger transportation by rope - General requirements - Part 1: Requirements applicable to all installations. EN 12927-2:2004 (E) 6 EN 12929-2, Safety requirements for cableway installations designed to carry persons General requirements Part 2: Additional requirements for reve
36、rsible bicable aerial ropeways without carrier truck brakes. EN 12930, Safety requirements for cableway installations designed to carry persons Calculations. EN 13107, Safety requirements for cableway installations designed to carry persons Civil engineering works. EN 13223, Safety requirements for
37、cableway installations designed to carry persons Drive systems and other mechanical equipment. EN 13243, Safety requirements for cableway installations designed to carry persons - Electrical equipment other than for drive systems. prEN 13796-1, Safety requirements for cableway installations designed
38、 to carry persons Carriers Part 1: Grips, carrier trucks, on-board brakes, cabins, chairs, carriages, maintenance carriers, tow-hangers. prEN 13796-2, Safety requirements for cableway installations designed to carry persons Carriers Part 2: Slipping resistance tests for grips. prEN 13796-3, Safety r
39、equirements for cableway installations designed to carry persons Carriers Part 3: Fatigue testing. 3 Terms and definitions For the purposes of this document, the terms and definitions given in prEN 1907:2004, EN 12385-2:2002 and the following apply. 3.1 tensile safety factor (TSF) ratio between the
40、Minimum Breaking Force (MBF) of the rope and the calculated tension force in the rope (see EN 12930) 3.2 bending ratio (rope) ratio between either the pitch diameter of the sheave (D) and the nominal rope diameter (d) or the pitch radius of the shoe, saddle or roller chain (R) and the nominal rope d
41、iameter 3.3 transverse force factor ratio between the tension force in the rope and the force normal to the rope axis 4 General requirements 4.1 Application of this standard The requirements of this document apply to all installations along with those of EN 1709, EN 1908, EN 1909, EN 12397, EN 12408
42、, EN 12927-1, EN 12927-3, EN 12927-4, EN 12927-5, EN 12927-6, EN 12927-7, EN 12927-8, EN 12929-1, EN 12929-2, EN 12930, EN 13107, EN 13223, EN 13243, prEN 13796-1, prEN 13796-2 and prEN 13796-3. 4.2 Safety principle 4.2.1 General The safety principles set out in EN 12929-1 apply. EN 12927-2:2004 (E)
43、 7 4.2.2 Hazard scenarios Especially the following event may lead to hazardous situations which may be avoided or limited by the requirements of this document : Excessive working stress in the steel wires may lead to premature fatigue breaks and rope-failure within the inspection intervals given in
44、EN 12927-7. 4.2.3 Safety measures The risk of a rope failure within the inspection intervals given in EN 12927-7 shall be limited by: a) incorporating a tensile safety factor in accordance with this standard into the rope design calculation according to EN 12930; b) incorporating a bending ratio in
45、accordance with this standard into the design of sheaves, drums, saddles or any support of ropes where the curvature of the rope is determined only by the curvature of the support; and by c) avoiding a bending stress in the steel wires exerted by transverse forces exceeding the allowable bending str
46、ess limited by the bending ratio given in this standard. 5 Safety requirements 5.1 General The general requirements shall conform to EN 12929-1. The additional requirements for calculation shall conform to EN 12930. 5.2 Safety factors 5.2.1 Tensile safety factors 5.2.1.1 Carrying ropes The tensile f
47、orce shall be calculated in accordance with EN 12930 for the following three conditions and the tensile safety factor shall be at least: Working condition without carrier track brake in action 3,15 Working condition with carrier track brake in action 2,70 Out of operation with consideration of clima
48、tic conditions in accordance with EN 12930 2,25 5.2.1.2 Haul ropes The tensile force shall be calculated in accordance with EN 12930. The tensile safety factor shall be at least the following: Funicular 4,2 Jig-back without carrier track bake 4,50 Jig-back with carrier track brake 3,80 Bicable unidirectional aerial ropeway 4,00 The maximum tensile safety factor shall not exceed 20 for haul rope with long splice. EN 12927-2:2004 (E) 8 5.2.1.3 Carrying-hauling ropes The t
