oSIST prEN 12927:2013

SLOVENSKI STANDARD
oSIST prEN 12927:2013
01-junij-2013
9DUQRVWQH]DKWHYH]DåLþQLãNHQDSUDYH]DSUHYR]RVHE9UYL
Safety requirements for cableway installations designed to carry persons - Ropes
Sicherheitsanforderungen an Seilbahnen für den Personenverkehr - Seile
Prescriptions de sécurité pour les installations à câbles destinées au transport des
personnes - Câbles
Ta slovenski standard je istoveten z: prEN 12927
ICS:
45.100 2SUHPD]DåLþQLFH Cableway equipment
oSIST prEN 12927:2013 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN 12927:2013

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oSIST prEN 12927:2013


EUROPEAN STANDARD
DRAFT
prEN 12927
NORME EUROPÉENNE

EUROPÄISCHE NORM

March 2013
ICS 45.100 Will supersede EN 12927-1:2004, EN 12927-2:2004, EN
12927-3:2004, EN 12927-4:2004, EN 12927-5:2004, EN
12927-6:2004, EN 12927-7:2004, EN 12927-8:2004
English Version
Safety requirements for cableway installations designed to carry
persons - Ropes
Prescriptions de sécurité pour les installations à câbles Sicherheitsanforderungen an Seilbahnen für den
destinées au transport des personnes - Câbles Personenverkehr - Seile
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 242.

If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations which
stipulate the conditions for giving this European Standard the status of a national standard without any alteration.

This draft European Standard was established by CEN 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 official 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, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United
Kingdom.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to
provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a European Standard.


EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2013 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 12927:2013: E
worldwide for CEN national Members.

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oSIST prEN 12927:2013
prEN 12927:2013 (E)
Contents Page
Foreword . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 7
4 Requirements . 9
5 Symbols and abbreviations . 9
6 Safety principle. 10
6.1 General . 10
6.2 Hazard scenarios . 10
6.3 Safety measures . 12
6.3.1 Selection criteria for ropes and their end fixings. 12
6.3.2 Safety factors . 12
6.3.3 Discard Criteria. 12
6.3.4 Long splicing of 6 strand hauling, carrying hauling and towing ropes . 12
6.3.5 End fixings . 12
6.3.6 Inspection, repair and maintenance . 12
7 Safety requirements . 13
7.1 Selection criteria for ropes and their end fixing . 13
7.1.1 Steel ropes . 13
7.1.2 Fiber ropes. 15
7.1.3 Rope re-use . 16
7.1.4 End fixings . 16
7.2 Safety factors . 16
7.2.1 General . 16
7.2.2 Factors . 17
7.3 Discard criteria . 20
7.3.1 Main body of rope (and long splice) . 20
7.3.2 Tension ropes . 21
7.3.3 Local deterioration . 21
7.3.4 Rope at end fixing . 22
7.4 Storage,handling and transportation,installation ( including tensioning,connecting
and/or splicing). 23
7.4.1 Storage . 23
7.4.2 Handling and transportation . 23
7.4.3 Installation (including tensioning,connecting and/or splicing) . 24
7.4.4 Measurements,adjustments,tests and records . 25
7.5 Long splicing of 6 strand hauling, carrying hauling and towing steel ropes . 25
7.5.1 Splice geometry . 25
7.5.2 Splice dimensions . 26
7.5.3 Operational documentation . 26
7.6 End fixings . 26
7.6.1 End fixing design . 27
7.6.2 End fixing execution and conformity . 27
7.6.3 Filled sockets . 27
7.6.4 Clamp sockets . 29
7.6.5 Drum ( fixing drum and anchor drum) . 31
7.6.6 Bolted clamp . 32
7.6.7 Wedge socket . 33
7.6.8 Spliced eye . 33
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7.6.9 Gripped eye . 33
7.6.10 Ferrule secured eye . 33
7.6.11 Lever winch . 33
7.7 Maintenance, inspection, and repair . 34
7.7.1 Maintenance . 40
7.7.2 Inspection . 41
7.7.3 Repair . 45
7.8 Magnetic rope testing. 46
7.8.1 Instrumentation Principles of operation of magnetic flux leakage instruments . 46
7.8.2 Personnel . 48
7.8.3 Magnetic Rope Testing Procedure . 49
7.8.4 Instrument verification . 51
Annex A (informative) Guidelines for executing Visual Inspection type "A" . 53
Annex B (informative) Magnetic Flux Density . 54
Annex ZA (informative) Relationship between this European Standard and the Essential
Requirements of EU Directive 2000/9/EC relating to Cableway Installations
designed to Carry Persons . 55

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Foreword
This document (prEN 12927:2013) 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 document is currently submitted to the CEN Enquiry.
This document will supersede EN 12927-1:2004, EN 12927-2:2004, EN 12927-3:2004,
EN 12927-4:2004, EN 12927-5:2004, EN 12927-6:2004, EN 12927-7:2004, EN 12927-8:2004.
This document has been prepared under a mandate given to CEN by the European Commission and
the European Free Trade Association, 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.
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1 Scope
This European Standard specifies the safety requirements applicable to:
 selection criteria for ropes and their end fixings,
 safety factors (excluding brake ropes and ropes for installations used for the transportation of
goods, nor to inclined lifts),
 discard criteria,
 storage, handling, transportation and installation (including tensioning, connecting and/or
splicing),
 long splicing of 6 strand hauling, carrying hauling and towing ropes,
 end fixings,
 inspection, repair and maintenance,
and the minimum requirements applicable to:
 MRT and radiographic equipments and procedures for the examination of steel wire ropes.
This standard is not applicable to installations for the transportation of goods nor to inclined lifts.
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. For undated
references, the latest edition of the referenced document (including any amendments) applies.
EN 444, Non-destructive testing - General principles for radiographic examination of metallic materials
by X- and gamma-rays
EN 1559-2, Founding - Technical conditions of delivery - Part 2: Additional requirements for steel
castings
EN 1709, Safety requirements for cableway installations designed to carry persons -
Precommissioning inspection, maintenance, operational inspection and checks
EN 1908, Safety requirements of cableway installations designed to carry persons - Tensioning
devices
EN 1909, Safety requirements for cableway installations designed to carry persons – Recovery and
evacuation
EN 10228-1, Non-destructive testing of steel forgings - Part 1: Magnetic particle inspection
EN 12385-2, Steel wire ropes - Safety - Part 2: Definitions, designation and classification
EN 12385-4, Steel wire ropes - Safety - Part 4: Stranded ropes for general lifting applications
EN 12385-8, Steel wire ropes - Safety - Part 8: Stranded hauling and carrying-hauling ropes for
cableway installations designed to carry persons
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EN 12385-9, Steel wire ropes - Safety - Part 9: Locked coil carrying ropes for cableway installations
designed to carry persons
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 12929-1, Safety requirements for cableway installations designed to carry persons - General
requirements - Part 1: Requirements for all installations
EN 12929-2, Safety requirements for cableway installations designed to carry persons - General
requirements - Part 2: Additional requirements for reversible 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 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
EN 13411-2, Terminations for steel wire ropes - Safety - Part 2: Splicing of eyes for wire rope slings
EN 13411-3, Terminations for steel wire ropes - Safety - Part 3: Ferrules and ferrule-securing
EN 13411-4, Terminations for steel wire ropes - Safety – Part 4: Metal and resin socketing
EN 13411-5, Terminations for steel wire ropes - Safety - Part 5: U-bolt wire rope grips
EN 13411-6, Terminations for steel wire ropes - Safety - Part 6: Asymmetric wedge socket
EN 13411-7, Terminations for steel wire ropes - Safety - Part 7: Symmetric wedge socket
EN 13796-1, Safety requirements for cableway installations designed to carry persons - Carriers - Part
1: Grips, carrier trucks, on-board brakes, cabins, chairs, carriages, maintenance carriers, tow-hangers
EN 13796-2, Safety requirements for cableway installations designed to carry persons - Carriers –
Part 2: Slipping resistance test for grips
EN 13796-3, Safety requirements for cableway installations designed to carry persons - Carriers - Part
3: Fatigue tests
EN ISO 9554, Fibre ropes - General specifications (ISO 9554)
EN ISO 9934-1, Non-destructive testing - Magnetic particle testing - Part 1: General principles
(ISO 9934-1)
EN ISO 10547, Polyester fibre ropes - Double braid construction (ISO 10547)
EN ISO/IEC 17025, General requirements for the competence of testing and calibration laboratories
(ISO/IEC 17025)
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3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
additional tensioning device
additional device intended to hold the tension in a rope in case of failure of the main tensioning device
3.2
bending ratio (rope)
ratio between either:
the pitch diameter of the sheave (D) and the nominal rope diameter (d)
the pitch radius of the shoe, saddle or roller chain (R) and the nominal rope diameter (d)
3.3
bolted clamp
accessory end fixing consisting of two grooved plates bolted together between which the entire rope is
pressed and secured by means of bolts
3.4
clamp socket
type of end fixing incorporating a socket basket wherein the entire strands of the rope are separated
from each other and secured between the socket basket and a conical shaped wedge, usually
incorporating grooves to match them
3.5
discard criteria
level of deterioration at which the rope or the end fixing is declared unfit for further service
3.6
drum
end fixing consisting of a number of dead turns of rope permanently wound around a winch support,
the end of the rope being secured by means of a bolted clamp
3.7
dynamic bending
rope bending which varies significantly during operations
3.8
efficiency
ratio between the breaking force of the combination of rope and end fixing, and the minimum breaking
force of the rope. It determines the load bearing capacity of the combination in respect to those of the
wire rope
3.9
filled socket
socket end fixing where a into the brushed rope end is secured using molten metal a poured suitable
mean
3.10
indicators
devices inserted into the rope with the scope to identify and mark particular rope areas
3.11
installer
person or organisation responsible for the whole rope installation, the splicing and the end connecting,
the tensioning and the adjustment, or a part of it
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3.12
lever winch
end fixing accessory comprising a mechanism actuated by a lever and acting on two sets of jaws
alternately gripping the rope and moving it longitudinally
3.13
local discontinuity
localised fault or defect such as a broken or damaged wire or a corrosion pit on a wire
3.14
loss of metallic area
reduction in area expressed as a percentage of the nominal metallic cross-sectional area of the new
rope, taking into account the effects of broken wires and the effect of corrosion and wear
3.15
lubrification agent
any product applied to the rope in service in order to protect it against internal wear, corrosion or both
3.16
magnetic rope testing
method of testing based on the detection of the magnetic flux leakage of a magnetized rope
3.17
main body of the rope
all the length of rope excluding any sections in end fixing or long splice
3.18
nominal diameter (d)
dimension by which the rope is designed
3.19
optical rope inspection devices
instrumentation designed to acquire and record images of ropes surface.
3.20
radiographic examination
method of testing based on the impress of a film by X or gamma rays passing trough a wire rope
3.21
reference bendings
total number of bends over sheaves in one complete revolution (unidirectional ropeways) ore one
complete ride forward and backward ( reversible ropeways)
3.22
reference length
the length of rope over which the value of a specified characteristic is measured or assessed e.g. 6xd
(6 x nominal diameter of the rope)
3.23
rope signature
the signals on the test recording display as the rope travels through the test head on the first occasion
that it is tested. The signature is taken as the datum upon which in-service deterioration effects are
referred. The signature reflects the construction of the rope and changes in magnetic characteristics of
the rope among its length, e.g. magnetic permeability differences
3.24
single function instrument
instrument which detects either local discontinuities
3.25
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slipping force
maximum longitudinal tension force, which can be applied at a clamped to a rope held by friction
before its initial slippage
3.26
socket basket
part of the socket containing the metal or resin cone
3.27
static bending
rope bending which does not vary significantly during operations
3.28
tensile safety factor
ratio between the Minimum Breaking Force of the rope and the calculated tension force in the rope
(see EN 12930)
3.29
test head
device on that part of the test instrument positioned around the rope during testing which generates
the magnetising field and contains the detecting or sensing elements
3.30
transverse force factor
ratio between the tension force in the rope and the force normal to the rope axis
3.31
visual inspection
method of inspection based on the visual detection of wire rope damages
3.32
wire break indication
indication from the local discontinuity (LD) channel of the test instrument specifically identified as an
internal or external wire break type
4 Requirements
The requirements of this document apply to all installations along with those of EN 1709, EN 1908, EN
1909, EN 12397, EN 12408, EN 12929-1, EN 12929-2, EN 12930, EN 13107, EN 13223, EN 13243,
EN 13796-1, EN 13796-2 and EN 13796-3.
5 Symbols and abbreviations
sf  slipping force
D/d  the pitch diameter of the sheave (D) and the nominal rope diameter (d)
R/d  the pitch radius of the shoe, saddle or roller chain (R) and the nominal rope diameter (d)
LD  local discontinuity
MRT magnetic rope testing
RT  radiographic examination
VI  visual inspection
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OID  optical rope inspection devices
6 Safety principle
6.1 General
The safety principles set out in EN 12929-1 apply.
If ropes of different productions are required to be spliced together, they shall have the same basic
design
characteristics in terms of nominal rope diameter, strand construction, minimum breaking force,
direction and type of lay, wire grades, measured rope diameter and measured lay length.
Rope repairs using ropes or strands of different production batches are allowed.
Irrespective of whether the rope is inspected by MRT or visual means, the same wire broken in several
places over the stated reference length shall be regarded as a single broken wire.
Loose wires and wires repaired by welding, brazing or gluing shall be regarded as broken wires.
Ropes shall be discarded if their condition cannot, or can no longer, be assessed with the current
methods of inspection.
6.2 Hazard scenarios
The following events may lead to hazardous situations which may be avoided or limited by the
requirements of this document.
Selection criteria for ropes and their end fixing:
a) The breakage of a rope or the failure of an end fixing may lead to the following hazardous
situations:
1) Falling down of rope with the risk of carrier crash and the risk of impact to persons;
2) Release of the elastic potential energy of a tensioned / extended rope;
b) Deterioration/damages of the structure of the rope can lead to the following hazardous situations:
1) Derailment of rope (deropement);
2) Derailment of carrier truck.
c) The rotation of the rope around its axis in the low rope tow systems can create dangerous
situation to the user.
d) Vibrations may lead to premature failures of the installation components.
Safety factors:
e) Excessive working stress in the steel wires may lead to premature fatigue breaks and rope-failure
within the stated inspection intervals.
Discard criteria:
f) excessive decrease of the metallic cross sectional area may lead to the breakage of the rope;
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g) fatigue breaks, loose wires, corrosion and wear may lead to a failure of end fixing and of ropes;
h) deterioration/damaging of the structure of the rope can lead to deropement or to insufficient
i) attachment of the grip:
1) Storage, handling, transportation and installation (including tensioning, connecting and/or
splicing)
j) elevated temperature and inefficient rope protection during storage may lead to corrosion which
may
k) lead to rope failure within an inspection period;
l) failure of properly supporting the reels may allow it to roll out;
m) failure of the rope connection with an auxiliary rope or with the brake controlled reel may lead to
loss of control of the rope uncoiling process.
Long splicing of 6 strand hauling, carrying hauling and towing ropes:
n) slipping apart of the two rope ends connected by a long splice may lead to a failure of the long
splice;
o) variations of the diameter in the splice area may lead to slippage or malfunction of the grips;
p) reduction of the diameter in the splice area may lead to an increase of stresses in the rope.
End fixings:
q) failure of the end fixing may lead to the release of the rope end from the end fixing or from the
installation anchor point;
r) slipping of the rope end in the end fixing may lead to hazardous disturbances in the function with
other components
s) the risk of lack of brush cleaning, due to environmental operating conditions during socketing,
may reduce the safety level of the end fixing
Inspection, repair and maintenance:
t) rope dirt surface may lead to a malfunction of components (carrying rope brakes, detachable grips
etc.) interacting to the rope.
Magnetic rope testing:
u) poor MRT instrument design can impair the execution of the inspections;
v) poor MRT instrument sensitivity prevents proper damage evaluation
w) not detectable malfunction of the MRT instrument during the inspection prevents proper damage
evaluation;
x) inability of personnel to properly carry out the inspection prevents proper damage evaluation;
y) absence of, or inaccuracy in, the inspection report.
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6.3 Safety measures
6.3.1 Selection criteria for ropes and their end fixings
To select ropes and end fixings in accordance with this standard.
6.3.2 Safety factors
The risk of a rope failure within stated inspection intervals 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 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 stress limited by the bending ratio given in this standard.
6.3.3 Discard Criteria
a) The decrease of the metallic cross sectional area shall be limited by repair according to this
standard or by discarding the rope according to this standard;
b) the risk of a failure of end fixing and of ropes may be reduced by discarding by timeout (hours or
years) according to this standard;
c) deterioration/damaging of the structure of the rope shall be limited by repair according to this
standard or by discarding the rope according to this standard;
d) the risk of slipping apart spliced rope ends may be reduced by repair according to this standard
or by discarding the long splice according to this standard.
6.3.4 Long splicing of 6 strand hauling, carrying hauling and towing ropes
The risk of slipping apart of the spliced rope ends may be reduced by a correct correlation of
geometrical characteristics of the two ropes connected by the splice, by selecting the splice geometry
in accordance with this standard and by selecting the correct auxiliary (wrapping) material.
The risk of an insuffi
...