EN 15612:2020

SLOVENSKI STANDARD
01-oktober-2020
Nadomešča:
SIST EN 15612:2009+A1:2011
Železniške naprave - Zavore - Pospešilnik praznjenja glavnega zavornega voda
Railway applications - Braking - Brake pipe accelerator
Bahnanwendungen - Bremse - Schnellbremsbeschleuniger
Applications ferroviaires - Freinage - Accélérateur de vidange de conduite
Ta slovenski standard je istoveten z: EN 15612:2020
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.

EN 15612
EUROPEAN STANDARD
NORME EUROPÉENNE
June 2020
EUROPÄISCHE NORM
ICS 45.040 Supersedes EN 15612:2008+A1:2010
English Version
Railway applications - Braking - Brake pipe accelerator
Applications ferroviaires - Freinage - Accélérateur de Bahnanwendungen - Bremse -
vidange de conduite Schnellbremsbeschleuniger
This European Standard was approved by CEN on 13 April 2020.

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. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists 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, 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
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 15612:2020 E
worldwide for CEN national Members.

Contents Page
European foreword . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 6
4 Design and manufacture . 7
4.1 General . 7
4.2 Functional requirements. 7
4.2.1 General . 7
4.2.2 Operating requirements . 7
4.2.3 Train behaviour . 7
4.2.4 Effect of overcharge . 7
4.2.5 Effect of individual vehicle . 8
4.2.6 Subsequent emergency braking . 8
4.2.7 Sensitivity . 8
4.2.8 Insensitivity to brake pipe pressure fall . 8
4.2.9 Insensitivity to distributor valve quick service device operation . 8
4.2.10 Tightness . 9
4.3 Shock and vibration requirements . 10
4.4 Environment requirements . 10
4.4.1 General . 10
4.4.2 Temperature . 10
4.4.3 Other environmental conditions . 10
4.5 Compressed air quality . 11
4.6 Fire behaviour . 11
4.7 External appearance . 12
4.8 Design requirements regarding pressure stress . 12
4.9 Interfaces . 12
4.9.1 General . 12
4.9.2 Mechanical . 12
4.9.3 Pneumatic . 12
5 Type tests . 12
5.1 General . 12
5.2 Individual brake pipe accelerator tests . 12
5.2.1 Test bench for individual brake pipe accelerator tests . 12
5.2.2 Sampling for type tests . 14
5.2.3 Test temperature and air quality . 14
5.2.4 Procedure for type tests . 14
5.2.5 Operation at extreme temperatures . 17
5.3 Simulated train consist tests . 18
5.3.1 Simulated train consist test bench . 18
5.3.2 Sampling for train consist test . 18
5.3.3 Test temperature and air quality . 18
5.3.4 Test procedure . 19
6 In-service assessment. 20
7 Designation . 20
8 Identification and marking . 20
Annex A (normative) In-service assessment . 21
Annex ZA (informative) Relationship between this European Standard and the Essential
Requirements of EU Directive 2016/797/EU aimed to be covered. 22
Bibliography . 24

European foreword
This document (EN 15612:2020) has been prepared by Technical Committee CEN/TC 256 “Railway
applications”, the secretariat of which is held by DIN.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by December 2020, and conflicting national standards
shall be withdrawn at the latest by December 2020.
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 supersedes EN 15612:2008+A1:2010.
The main changes compared to EN 15612:2008+A1:2010 are:
a) the standard’s title has been modified;
b) normative references have been updated;
c) terms and definitions have been revised;
d) requirements on design and manufacture have been revised;
e) requirements on materials have been removed;
f) requirements on type tests have been revised;
g) requirements on routine test and inspection have been removed;
h) requirements on documentation have been removed;
i) requirements on identification and marking have been revised;
j) Annex ZA has been updated.
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 2016/797/EU.
For relationship with EU Directive 2016/797/EU, see informative Annex ZA, which is an integral part of
this document.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: 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.
1 Scope
This document is applicable to brake pipe accelerators designed to vent the brake pipe of railway
vehicles when an emergency braking is initiated, without taking the type of vehicles and track-gauge
into consideration.
This document specifies the requirements for the design, manufacture and testing of brake pipe
accelerators.
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 14478:2017, Railway applications – Braking – Generic vocabulary
EN 14601:2005+A1:2010, Railway applications – Straight and angled end cocks for brake pipe and main
reservoir pipe
EN 15355:2019, Railway applications – Braking – Distributor valves and distributor-isolating devices
EN 45545-2:2013+A1:2015, Railway applications – Fire protection on railway vehicles – Part 2:
Requirements for fire behaviour of materials and components
EN 50125-1:2014, Railway applications – Environmental conditions for equipment – Part 1: Rolling stock
and on-board 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 228-1:2003, Pipe threads where pressure-tight joints are not made on the threads – Part 1:
Dimensions, tolerances and designation (ISO 228-1:2000)
ISO 8573-1:2010, Compressed air – Part 1: Contaminants and purity classes
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 14478:2017 and the followin
...