oSIST prEN 18141:2025
(Main)Railway applications - Braking - Emergency push button
Railway applications - Braking - Emergency push button
This document specifies the requirements for the function, design, performance, and testing of emergency push buttons that are installed in train’s driving’s cab.
This document is applicable for emergency push button.
This document is not applicable for emergency handle.
Bahnanwendungen - Bremsen - Notbremsschlagknopf
Dieses Dokument legt die Anforderungen an die Funktion, die Gestaltung, die Leistung und die Prüfung von Notbremsschlagknöpfen in Führerräumen von Schienenfahrzeugen fest.
Dieses Dokument ist für Notbremsschlagknöpfe anwendbar.
Dieses Dokument ist nicht für Notbremshandgriffe anwendbar.
Applications ferroviaires - Freinage - Bouton poussoir d'urgence
Le présent document spécifie les exigences relatives à la fonction, à la conception, aux performances et aux essais des boutons poussoirs d’urgence installés dans la cabine de conduite des trains.
Le présent document s’applique au bouton-poussoir d’urgence.
Le présent document ne s’applique pas à la poignée de secours.
Železniške naprave - Zavore - Gumb za klic v sili
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
01-januar-2025
Železniške naprave - Zavore - Gumb za klic v sili
Railway applications - Braking - Emergency push button
Bahnanwendungen - Bremsen - Notbremsschlagknopf
Applications ferroviaires - Freinage - Bouton poussoir d'urgence
Ta slovenski standard je istoveten z: prEN 18141
ICS:
45.040 Materiali in deli za železniško Materials and components
tehniko for railway engineering
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2024
ICS 45.040
English Version
Railway applications - Braking - Emergency push button
Applications ferroviaires - Freinage - Bouton poussoir Bahnanwendungen - Bremsen - Notbremsschlagknopf
d'urgence
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 256.
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, 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, Türkiye 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
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 18141:2024 E
worldwide for CEN national Members.
Contents Page
European foreword . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 6
4 Symbols and abbreviations . 6
5 Requirements . 6
5.1 Functional requirements . 6
5.1.1 General. 6
5.1.2 Emergency push button as emergency brake demand device only . 6
5.1.3 Emergency push button including emergency brake demand device and trainwide
emergency brake control device . 7
5.2 Operating conditions . 7
5.2.1 Shock and vibration . 7
5.2.2 Altitude . 7
5.2.3 Ambient temperature. 7
5.2.4 Humidity . 7
5.2.5 Solar radiation . 7
5.2.6 Pollution . 8
5.2.7 Specific requirements for pneumatic parts of emergency push buttons . 8
5.2.8 Specific requirements for electrical parts of emergency push buttons . 8
5.3 Design requirements . 8
5.3.1 External appearance . 8
5.3.2 Application and release forces . 9
5.3.3 Stroke of the push button. 9
5.3.4 Fire/smoke behaviour . 9
5.3.5 Pneumatic connections . 9
5.3.6 Installation constraints and recommendations . 9
6 Type test methods . 10
6.1 Sampling for type test . 10
6.2 Test requirements . 10
6.3 Test procedure . 10
6.3.1 Principle . 10
6.3.2 Check of physical and geometrical characteristics . 11
6.3.3 Application/release control . 11
6.3.4 Vibration test . 12
6.3.5 Resistance to shock test . 13
6.3.6 Endurance at ambient temperature test . 13
6.3.7 Corrosion test . 14
6.3.8 Fire/smoke behaviour . 15
6.3.9 Examination . 15
6.3.10 Pressure test (water pressure) . 15
6.3.11 Tightness and exhaust performance test . 15
6.3.12 Insulation test . 16
6.3.13 Dielectric strength . 16
7 In-service assessment . 16
8 Marking . 16
Annex A (normative) Dimensions, shape and colour of the mushroom button . 17
Annex B (informative) In-service assessment . 19
Bibliography . 20
European foreword
This document (prEN 18141:2024) has been prepared by Technical Committee CEN/TC 256 “Railway
applications”, the secretariat of which is held by DIN.
This document is currently submitted to the CEN Enquiry.
1 Scope
This document specifies the requirements for the function, design, performance, and testing of
emergency push buttons that are installed in train’s driving’s cab.
This document is applicable for emergency push button.
This document is not applicable for emergency handle.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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 14198:2016+A2:2021, Railway applications - Braking - Requirements for the brake system of trains
hauled by locomotives
EN 45545-2:2020+A1:2023, Railway applications - Fire protection on railway vehicles - Part 2:
Requirements for fire behaviour of materials and components
EN 50121-3-2:2016, Railway applications — Electromagnetic compatibility — Part 3-2: Rolling stock —
Apparatus
EN 50125-1:2014, Railway applications - Environmental conditions for equipment - Part 1: Rolling stock
and on-board equipment
EN 50155:2021, Railway applications - Rolling stock - Electronic equipment
EN 60721-3-5:1997, Classification of environmental conditions — Part 3: Classification of groups of
environmental parameters and their severities — Section 5: Ground vehicle installations (IEC 60721 3
5:1997)
EN 61373:2010, Railway applications - Rolling stock equipment - Shock and vibration tests (IEC
61373:2010)
EN ISO 228-2:2003, Pipe threads where pressure-tight joints are not made on the threads - Part 2:
Verification by means of limit gauges (ISO 228-2:1987)
EN ISO 24478:2024, Railway applications - Braking - General vocabulary (ISO 24478:2023, including
corrected version 2024-04)
EN ISO 6270-2:2018, Paints and varnishes - Determination of resistance to humidity - Part 2: Condensation
(in-cabinet exposure with heated water reservoir) (ISO 6270-2:2017)
EN ISO 9227:2022, Corrosion tests in artificial atmospheres —Salt spray tests (ISO 9227:2022)
ISO 5208:2015, Industrial valves — Pressure testing of metallic valves
ISO 4975:2022, Railway applications — Braking system — Quality of compressed air for pneumatic
apparatus and systems
As impacted by EN 50121-3-2:2016/A1:2019.
As impacted by EN ISO 9227:2022/A1:2024.
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN ISO 24478:2024 and the
following apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp/
— IEC Electropedia: available at https://www.electropedia.org/
3.1
emergency push button
emergency brake demand device fitted with a red mushroom button for the driver that is independent
and separated from other driver’s brake demand device
Note 1 to entry: This device can also function as an emergency brake trainwide control device.
[SOURCE: EN ISO 24478:2024, 3.10.1.8, modified — admitted term “emergency handle” deleted, Note 1
to entry moved to definition.]
3.2
mushroom button
part of the emergency push button in interface with the driver with a shape of mushroom
4 Symbols and abbreviations
For the purposes of this document, the following symbols in Table 1 apply.
Table 1 — Symbols
Symbol Description Unit
U Nominal voltage V
n
DC Direct current —
5 Requirements
5.1 Functional requirements
5.1.1 General
Only two positions shall be possible for the emergency push button: “no emergency brake application
demanded” and “emergency brake application demanded”. These two positions shall be notched.
Switching from “no emergency brake application demanded” to “emergency brake application
demanded” shall be done by pushing on the mushroom button.
Switching from “emergency brake application demanded” to “no emergency brake application
demanded” shall be done by pulling the mushroom button.
5.1.2 Emergency push button as emergency brake demand device only
The emergency brake demand signal shall be controlled direct
...
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