CEN/TS 15427-1-2:2021

SLOVENSKI STANDARD
01-marec-2021
Železniške naprave - Trenje na stiku kolo-tirnica - 1-2. del: Oprema in uporaba -
Materiali za zgornjo površino tirnic
Railway applications - Wheel/Rail friction management - Part 1-2: Equipment and
Application - Top of Rail materials
Bahnanwendungen - Reibungsmanagement zwischen Rad und Schiene - Teil 1-2:
Vorrichtungen und Anwendung - Behandlung der Schienenoberfläche
Applications ferroviaries - Gestion de la friction roue/rail - Partie 1-2 : Équipements et
application - Matériaux de la surface du rail
Ta slovenski standard je istoveten z: CEN/TS 15427-1-2:2021
ICS:
45.040 Materiali in deli za železniško Materials and components
tehniko for railway engineering
45.080 Tračnice in železniški deli Rails and railway
components
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

CEN/TS 15427-1-2
TECHNICAL SPECIFICATION
SPÉCIFICATION TECHNIQUE
January 2021
TECHNISCHE SPEZIFIKATION
ICS 21.260; 45.080; 45.120
English Version
Railway applications - Wheel/Rail friction management -
Part 1-2: Equipment and Application - Top of Rail
materials
Applications ferroviaries - Gestion de la friction Bahnanwendungen - Reibungsmanagement zwischen
roue/rail - Partie 1-2 : Équipements et application - Rad und Schiene - Teil 1-2: Vorrichtungen und
Matériaux de la surface du rail Anwendung - Behandlung der Schienenoberfläche
This Technical Specification (CEN/TS) was approved by CEN on 23 November 2020 for provisional application.

The period of validity of this CEN/TS is limited initially to three years. After two years the members of CEN will be requested to
submit their comments, particularly on the question whether the CEN/TS can be converted into a European Standard.

CEN members are required to announce the existence of this CEN/TS in the same way as for an EN and to make the CEN/TS
available promptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in
parallel to the CEN/TS) until the final decision about the possible conversion of the CEN/TS into an EN is reached.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TS 15427-1-2:2021 E
worldwide for CEN national Members.

Contents Page
European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 General. 7
4.1 Purpose . 7
4.2 Application . 8
5 Requirements for trainborne equipment . 8
5.1 General. 8
5.2 Design of trainborne equipment . 9
5.3 Installation of trainborne equipment . 9
5.4 Operations, Inspection and maintenance . 10
5.5 Application . 10
5.6 Verification . 11
6 Requirements for trackside equipment . 11
6.1 General. 11
6.2 Design of trackside equipment . 12
6.3 Installation of trackside equipment . 13
6.4 Operations, inspection and maintenance . 13
6.5 Application . 13
6.6 Verification . 13
Annex A (informative) Types of Trainborne and Trackside Equipment . 14
A.1 Introduction . 14
A.2 Trainborne Equipment . 14
A.2.1 Fluid material application to the active interface . 14
A.2.2 Solid material application to the wheel . 14
A.3 Trackside Equipment . 14
A.3.1 Mechanically activated . 14
A.3.2 Hydraulically activated . 14
A.3.3 Electrically activated . 14
Annex B (informative) Guidance on approvals testing and verification. 15
B.1 General. 15
B.2 System – Equipment and materials . 16
B.2.1 Baselining . 16
B.2.2 Trials . 16
B.2.3 Measure Effectiveness . 16
B.2.4 Monitoring. 17
B.2.5 Outcome of trial . 17
Annex C (informative) Good Practice for trainborne equipment. 18
C.1 Reasons for installing trainborne equipment . 18
C.2 Determination of equipment position . 18
C.3 Inspection and Maintenance . 18
Annex D (informative) Installation and maintenance good practice for trackside
equipment . 20
D.1 Selecting locations for trackside equipment . 20
D.2 Determination of equipment position . 20
D.3 Inspection and Maintenance . 21
D.4 Records . 21
Annex E (informative) Guideline braking tests for top of rail friction management
(trainborne and trackside equipment) . 22
E.1 General . 22
E.2 Choosing the right test vehicle . 22
E.3 Trainborne equipment . 22
E.4 Test conditions . 22
E.5 Brake tests. 23
E.6 Test parameters . 23
Bibliography . 24

European foreword
This document (CEN/TS 15427-1-2:2021) has been prepared by Technical Committee CEN/TC 256
“Railway applications”, the secretariat of which is held by DIN.
Attention is drawn to the possibility that some of the elements of this document may be the subject
of patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document is part of the EN 15427 series, Railway applications - Wheel/Rail friction
management, which consists of the following parts:
— Part 1-1: Equipment and Application - Flange Lubrication;
— Part 1-2: Equipment and Application - Top of Rail materials;
— Part 1-3: Equipment and Application - Adhesion materials;
— Part 2-1: Properties and Characteristics - Flange lubricants;
— Part 2-2: Properties and Characteristics - Top of Rail materials;
— Part 2-3: Properties and Characteristics - Adhesion materials;
— Part 3: Rationale for requirements and further background information.
According to the CEN/CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to announce this Technical Specification: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary,
Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Introduction
Friction management using solid or fluid (oil, grease, etc.) substances at the wheel-rail interface is a
complex subject and includes:
— lubrication of the wheel flange / rail gauge corner interface, commonly referred to as “flange or
rail lubrication”;
— lubrication of the back of flange/ check rail interface, commonly referred to as “check rail
lubrication”;
— altering the level of friction at the interface between the top of rail and the wheel tread,
commonly referred to as “top of rail friction management”;
— applying materials to the wheel rail contact to increase (improve/ enhance/ recover) adhesion.
This document sets out the requirements for the equipment and application of the top of rail
wheel/rail friction management. It describes systems fitted on board trains and on the track, as both
systems may need to be deployed to achieve effective friction management of the wheel-rail
interface.
Managing the wheel-rail interface effectively will reduce wear of both wheel and rail. When friction
is managed effectively, noise levels, wear levels and the risk of flange climbing are reduced.
Conversely, where not managed effectively, assets may require replacement prematurely before
reaching their full economic potential.
There needs to be control in the application of top of rail materials such that there is:
— no loss of traction or braking performance;
— no adverse effect on signalling systems or track circuits;
— understanding of the increased risk of fire;
— no harmful environmental effect;
— no incompatibility between the different lubricants/ materials in use, particularly, between solid
and fluid systems.
1 Scope
This document is limited to speci
...