EN 1908:2004

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Safety requirements of cableway installations designed to carry persons - Tensioning devicesPrescriptions de sécurité pour les installations a câbles transportant des personnes - Dispositifs de mise en tensionSicherheitsanforderungen für Seilbahnen für den Personenverkehr - SpanneinrichtungenTa slovenski standard je istoveten z:EN 1908:2004SIST EN 1908:2005en45.100Cableway equipmentICS:SLOVENSKI
STANDARDSIST EN 1908:200501-januar-2005

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 1908October 2004ICS 45.100 English versionSafety requirements of cableway installations designed to carrypersons - Tensioning devicesPrescriptions de sécurité pour les installations à câblestransportant des personnes - Dispositifs de mise en tensionSicherheitsanforderungen für Seilbahnen für denPersonenverkehr - SpanneinrichtungenThis European Standard was approved by CEN on 23 August 2004.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of 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 United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2004 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 1908:2004: E

Relationship between this European Standard and the Essential Requirements of EU Directive 2000/9/EC relative to cableway installations designed to carry persons.18

For dated references, only the edition cited applies.
For undated references, the latest edition of the referenced document (including any amendments) applies. EN 982, Safety of machinery — Safety requirements for fluid power systems and their components — Hydraulics. EN 1709, Safety requirements for cableway installations designed to carry persons — Pre-commissioning inspection, maintenance and operational inspection and checks. prEN 1907:2004, Safety requirements for passenger transportation by rope — Terminology. EN 1909, Safety requirements for cableway installations designed to carry persons — Recovery and evacuation. 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 persons — Ropes — Part 1: Selection criteria for
ropes and their end fixings. EN 12927-2, Safety requirements for cableway installations designed to carry persons — Ropes — Part 2: Safety factors. 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 designed to carry persons — Ropes — Part 4: End fixing. 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 6: Discard criteria. EN 12927-7, Safety requirements for cableway installations designed to carry persons — Ropes — Part 7: Calculation, repair and maintenance.

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 principles 4.2.1 General The safety principles set out in EN 12929-1 apply. In addition, the following hazard scenarios and safety requirements relative to the scope of this document are to be taken into consideration. 4.2.2 Hazard scenarios The following events may lead to hazardous situations which may be avoided or limited by the requirements of this document: a) exceeding permissible limits for tension and variation in length of a rope; b) exceeding permissible pressure limits in a hydraulic tensioning device; c) jamming or catching which impedes the free movement of a rope; d) jamming, wedging or incorrect position of the moving parts of a tensioning device; e) deterioration or failure of the components of a tensioning device due to wear, corrosion or fatigue; f) failure of components in a tensioning device as a result of incorrect dimensioning; g) hazards which a tensioning device can present for persons in access and work areas; h) improper behaviour of persons (passengers, operating personnel, third parties) 4.2.3 Safety measures The safety measures to be taken to eliminate the hazard scenarios listed under 4.2.2 are the following:  ensure that rope tensions are maintained within permissible limits;  prevent or avert the failure of safety-related mechanical and hydraulic components and systems for measuring forces and pressures;  prevent and detect the malfunction of a tensioning device;

5.2.1.2 If the position of a counterweight or a hydraulic tensioning device is adjustable, the travel of the counterweight or jack may be calculated assuming a temperature difference of 30 °C, and the length required for renewing a splice or for installing new end fixings need not be taken into account. The adjustment device shall be able to accommodate at least the travel required by 5.2.1.1 a) to d). For other adjustable tensioning devices, this provision may be applied by analogy. 5.2.2 Free movement Free movement of a tensioning device shall be assured in all permissible operating conditions, in particular with regard to the effects of bad weather. 5.2.3 Limits 5.2.3.1 Travel shall be limited by means of mechanical stops. 5.2.3.2 Under all conditions of normal operation, tensioning devices shall not reach the mechanical stops. 5.2.3.3 The extreme operating positions of the moving part of a tensioning device shall be monitored. The triggering of a travel limit switch shall initiate the stopping of the installation. It shall only be possible to reset travel limit switches in situ and manually.
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