CLC/TR 50488:2006
(Main)Railway applications - Safety measures for the personnel working on or near overhead contact lines
Railway applications - Safety measures for the personnel working on or near overhead contact lines
This Technical Report (TR) is applicable to all work activity on or near the overhead contact line [IEC 60050 811, definition 811-33-02] of railway installations with supply voltage values as described in Table 1, derived from EN 50163. This Technical Report applies to requirements for safe working and maintenance procedures. It applies to all electrical work activities as well as non-electrical work activities. This Technical Report deals with the electrical hazard only. Risks coming from train traffic are not covered in this document. This Technical Report does not apply to: - guided mass transport systems such as tramways, elevated and underground metro railways, mountain railways, trolley bus and other conductor rail systems; - mine or other internal industrial material transportation railways; - railway installations with supply voltage values below 1 500 V; - experimental electrical research work.
Bahnanwendungen - Sicherheitsmaßnahmen bei Arbeiten an und in der Nähe von Oberleitungen
Applications ferroviaires - Mesures de sécurité pour le personnel travaillant sur ou à proximité des lignes aériennes de contact
Železniške naprave - Varnostni ukrepi za osebje, ki dela na nadzemnem vodu, ali v njegovi bližini
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2007
Železniške naprave - Varnostni ukrepi za osebje, ki dela na, ali v bližini
nadzemnega voda.
Railway applications - Safety measures for the personnel working on or near overhead
contact lines
Bahnanwendungen - Sicherheitsmaßnahmen bei Arbeiten an und in der Nähe von
Oberleitungen
Applications ferroviaires - Mesures de sécurité pour le personnel travaillant sur ou a
proximité des lignes aériennes de contact
Ta slovenski standard je istoveten z: CLC/TR 50488:2006
ICS:
13.260 9DUVWYRSUHGHOHNWULþQLP Protection against electric
XGDURP shock
45.020 Železniška tehnika na Railway engineering in
splošno general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
TECHNICAL REPORT
CLC/TR 50488
RAPPORT TECHNIQUE
December 2006
TECHNISCHER BERICHT
ICS 13.260; 45.020
English version
Railway applications -
Safety measures for the personnel working
on or near overhead contact lines
Applications ferroviaires - Bahnanwendungen -
Mesures de sécurité pour le personnel Sicherheitsmaßnahmen bei Arbeiten
travaillant sur ou à proximité des lignes an und in der Nähe von Oberleitungen
aériennes de contact
This Technical Report was approved by CENELEC on 2006-11-24.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, the Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels
© 2006 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. CLC/TR 50488:2006 E
Foreword
This Technical Report was prepared by SC 9XC, Electric supply and earthing systems for public transport
equipment and ancillary apparatus (fixed installations), of Technical Committee CENELEC TC 9X, Electrical
and electronic applications for railways.
The text of the draft was submitted to the formal vote and was approved by CENELEC as CLC/TR 50488 on
2006-11-24.
__________
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Contents
Page
Introduction.4
1 Scope.5
2 Normative references.5
3 Terms and definitions .6
4 Basic principles.10
4.1 Safe operation.10
4.2 Personnel.10
4.3 Organization.11
4.4 Communication (Transmission of information).11
4.5 Work location.12
4.6 Tools, equipment and devices.12
4.7 Drawings and records.13
4.8 Signs.13
5 Standard operational procedures .13
5.1 General.13
5.2 Operating activities.13
5.3 Functional checks.14
6 Working procedures .15
6.1 General.15
6.2 Dead working.16
6.3 Live working.20
6.4 Working in the vicinity of live parts .20
7 Maintenance procedures.21
7.1 General.21
7.2 Personnel.21
7.3 Repair work.21
7.4 Temporary interruption.22
7.5 End of maintenance work.22
8 Guidance for distances in air for working procedures .22
Annex A (informative) Method of calculation of the distances in air for working procedures.23
Bibliography.25
Tables
Table 1 .5
Table 2 .22
Table A.1 .24
Table A.2 .24
Figures
Figure 1.7
Figure 2.8
Introduction
This Technical Report was prepared in order to provide a technical basis for possible further
standardization activities on the subject above.
As it is known, the safety rules for the work activities on or near electrical installations are stated by
EN 50110-1. This standard was conceived with particular reference to the A.C. three-phase or D.C.
electric power generation, transmission and distribution systems. It states explicitly that it “has not been
developed specifically to apply” to the electric traction systems, because of the particular nature of these
installations.
In developing the present document, EN 50110-1 was taken as a guide, following the recommendation
contained in the Scope of the abovementioned Standard.
Because of the too many differences existing and the particular scenarios, this document deals with
maintenance activities in the vicinities of the overhead contact lines with nominal voltage equal or above
1,5 kV.
During the WG activity the general rules for organization of the work and personnel qualification
contained in EN 50110-1 revealed to be applicable also to the electric traction lines and are reported here
for the sake of completeness. According to the CEN/CENELEC Internal Regulations Part 3 – Clause 1,
second paragraph, in the statements that were taken from EN 50110-1 without modification, the
expressions "shall", "is to" and similar were not changed in the corresponding (should, ought to, etc.)
referred to in Table G.2 of the abovementioned document.
Safety measures for live working activities are not covered in this Technical Report. In the countries
where the live working on the overhead contact lines is allowed, the National Committees should state the
necessary safety rules
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1 Scope
This Technical Report (TR) is applicable to all work activity on or near the overhead contact line
[IEC 60050-811, definition 811-33-02] of railway installations with supply voltage values as described in
Table 1, derived from EN 50163.
Table 1
Electrification system Nominal voltage
V
d.c. 1 500
(mean values) 3 000
a.c. 15 000
(rms values) 25 000
This Technical Report applies to requirements for safe working and maintenance procedures. It applies to
all electrical work activities as well as non-electrical work activities.
This Technical Report deals with the electrical hazard only. Risks coming from train traffic are not covered
in this document.
This Technical Report does not apply to:
guided mass transport systems such as tramways, elevated and underground metro railways,
mountain railways, trolley bus and other conductor rail systems;
mine or other internal industrial material transportation railways;
railway installations with supply voltage values below 1 500 V;
experimental electrical research work.
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 referenced
document (including any amendments) applies.
EN 50110-1:2004, Operation of electrical installations
EN 50122-1:1997, Railway applications – Fixed installations – Part 1: Protective provisions relating to
electrical safety and earthing
EN 50163:2004, Railway applications – Supply voltages of traction systems (IEC 60850:2000, related)
IEC 60050-811:1991, International Electrotechnical Vocabulary (IEV) – Chapter 811: Electric traction
IEC 60050-826:2004, International Electrotechnical Vocabulary (IEV) – Part 826: Electrical installations
3 Terms and definitions
For the purposes of this document the following definitions apply. Refer to the International
Electrotechnical Vocabulary for other terms not defined below, like mentioned in EN 50110-1.
3.1 General
3.1.1
electric traction system
railway electrical distribution network used to provide energy for rolling stock
3.1.2
overhead contact line
contact line placed above or beside the upper limit of the vehicle gauge and supplying vehicles with
electric energy through roof-mounted current collecting equipment
3.1.3
operation
all activities including work activities necessary to permit the electrical installation to function. These
activities include such matters as switching, controlling, monitoring and maintenance as well as both
electrical and non-electrical work
3.1.4
risk
a combination of the probability and the degree of the possible injury or damage to health of a person
exposed to a hazard or to hazards
3.1.5
electrical hazard
a source of possible injury or damage to health in presence of electrical energy from an electrical
installation
3.1.6
electrical danger
risk of injury from an electrical installation
3.1.7
electrical) injury
any physical damage to a person or an animal caused by electric shock, electric burn, electricarcs, or
from fire or explosion initiated by electric energy
3.2 Personnel, organization and communication
3.2.1
nominated person in control of a work activity
that person who has been nominated to be the person with direct management responsibility for the work
activity. Parts of this responsibility may be delegated to others as required
3.2.2
nominated person in control of an electrical installation
that person who has been nominated to be the person with direct management responsibility for the
electrical installation. Parts of this responsibility may be delegated to others as required
3.2.3
skilled person
a person with relevant education and experience to enable him or her to avoid dangers which electricity
may create
NOTE Adapted from IEC 60050-826-09-01.
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3.2.4
(electrically) instructed person
person adequately advised or supervised by electrically skilled persons to enable him or her to perceive
risks and to avoid hazards which electricity can create
NOTE Adapted from IEC 60050-826-09-02.
3.2.5
ordinary person
a person who is neither a skilled person nor an instructed person
[IEC 60050-826-09-03]
3.2.6
notification
messages or instructions which are either verbal or in writing associated with operation of any electrical
installation
3.3 Working zone
3.3.1
work location
site(s), place(s) or area(s) where a work activity ìs to be, is being, or has been carried out
3.3.2
vicinity zone
limited space outside the live working zone where an electrical hazard can exist (see Figure 1 and
Figure 2)
NOTE The outer limit of the vicinity zone
...
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