EN 15551:2009/FprA1

Railway applications - Railway rolling stock - Buffers

This European Standard defines the requirements for buffers with 105 mm, 110 mm and 150 mm stroke for vehicles or units which use buffers and screw coupling at the coupling interface with other interoperable rolling stock. It covers the functionality, interfaces and testing procedures, including pass fail criteria, for buffers.

Bahnanwendungen - Schienenfahrzeuge - Puffer

Applications ferroviaires - Matériel roulant ferroviaires - Tampons

Železniške naprave - Železniška vozila - Odbojniki - Dopolnilo A1

General Information

• Status: Not Published
• ICS: 45.060.01 - Railway rolling stock in general
• Technical Committee: CEN/TC 256 - Railway applications
• Drafting Committee: CEN/TC 256/WG 33 - Coupling devices
• Current Stage: 5060 - Closure of Vote - Formal Approval
• Start Date: 27-Aug-2010
• Due Date: 28-Aug-2011
• Completion Date: 27-Aug-2010
• Directive: 2008/57/EC - Directive 2008/57/EC of the European Parliament and of the Council of 17 June 2008 on the interoperability of the rail system within the Community (Recast)
• Mandate: M/275 - Mandate to CEN/CENELEC/ETSI for standardization in the field of railway equipment on the interoperability of the Trans-European high-speed rail system
• Mandate: M/334 - Mandate for programming and standardisation addressed to CEN, CENELEC and ETSI in the field of the Interoperability of the trans-european conventional rail system
• Ref Project: SIST EN 15551:2009/kFprA1:2010 - Railway applications - Railway rolling stock - Buffers

Relations

• Merged Into: EN 15551:2009+A1:2010 - Railway applications - Railway rolling stock - Buffers
• Effective Date: 06-Sep-2010
• Amends: EN 15551:2009 - Railway applications - Railway rolling stock - Buffers
• Effective Date: 15-Feb-2010

Overview - EN 15551:2009/FprA1 (Buffers for railway rolling stock)

EN 15551:2009/FprA1 is a CEN European standard covering railway rolling stock buffers. It defines requirements for buffers with 105 mm, 110 mm and 150 mm stroke used on vehicles or units that use buffers and screw coupling at the coupling interface. The standard addresses buffer functionality, mechanical interfaces and testing procedures, and includes pass/fail criteria and conformity assessment references tied to EU interoperability rules.

Key topics and technical requirements

• Buffer stroke sizes: specifies the three stroke classes (105 mm, 110 mm, 150 mm) that the standard covers.
• Functionality and interfaces: requirements for buffer performance when used with screw coupling and compatible rolling stock interfaces to ensure safe mechanical interaction.
• Testing procedures and pass/fail criteria: defined test methods and acceptance criteria for buffer components and assemblies (functional and mechanical verification).
• Conformity and assessment: links to interoperability constituent assessment and modules; Annex ZA (amendment A1) aligns the standard with EU Directive 2008/57/EC (TSI requirements) for presumption of conformity when cited in the OJEU.
• Scope limitations: applies to interoperable rolling stock using the specified buffer-and-screw-coupling arrangement; other requirements or directives may also apply.

Practical applications - who uses this standard

• Rolling stock designers and manufacturers - to specify compliant buffer systems for new vehicles and units.
• Test and certification laboratories - to perform standardized buffer testing and verify pass/fail criteria for conformity.
• Railway operators and fleet maintainers - to ensure replacement buffers and retrofits meet interoperability and safety requirements.
• Notified bodies and conformity assessors - for assessing interoperability constituents under the TSI/Directive framework.
• Standards and procurement teams - to reference EN 15551 in technical specifications, procurement documents and maintenance manuals.

Related standards and regulatory links

• Links directly to the TSI / EU Directive 2008/57/EC via Annex ZA (Amendment A1) for interoperability and conformity presumption.
• Cross-references in the document to related rolling-stock standards (for example EN 15566 for certain coupling systems) are used to coordinate requirements for coaches, locomotives, freight wagons and passenger stock.

By following EN 15551:2009/FprA1, stakeholders ensure buffer design, testing and installation meet recognized European requirements for mechanical interface safety, interoperability and conformity assessment across the rail sector.

Keywords: EN 15551, railway buffers, buffer stroke, screw coupling, rolling stock, interoperability, buffer testing, EU Directive 2008/57/EC, CEN.

Standards Content (Sample)

SLOVENSKI STANDARD
01-julij-2010
Železniške naprave - Železniška vozila - Odbojniki - Dopolnilo A1
Railway applications - Railway rolling stock - Buffers
Bahnanwendungen - Schienenfahrzeuge - Puffer
Applications ferroviaires - Matériel roulant ferroviaires - Tampons
Ta slovenski standard je istoveten z: EN 15551:2009/FprA1
ICS:
45.060.01 Železniška vozila na splošno Railway rolling stock in
general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
FINAL DRAFT
EN 15551:2009
NORME EUROPÉENNE
EUROPÄISCHE NORM
FprA1
May 2010
ICS 45.060.01
English Version
Railway applications - Railway rolling stock - Buffers
Applications ferroviaires - Matériel roulant ferroviaires - Bahnanwendungen - Schienenfahrzeuge - Puffer
Tampons
This draft amendment is submitted to CEN members for unique acceptance procedure. It has been drawn up by the Technical Committee
CEN/TC 256.
This draft amendment A1, if approved, will modify the European Standard EN 15551:2009. If this draft becomes an amendment, CEN
members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of this amendment
into the relevant national standard without any alteration.

This draft amendment 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 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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

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
© 2010 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 15551:2009/FprA1:2010: E
worldwide for CEN national Members.

Contents Page
Foreword .3
1 Modification to the Foreword .4
2 Modification to the Annex ZA, Annex ZA (informative) Relationship between this
European Standard and the Essential Requirements of EU Directive 2008/57/EC .5
3 Deletion of Annex ZB .8

Foreword
This document (EN 15551:2009/FprA1:2010) 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 Unique Acceptance Procedure.

The “Recast” Directive 2008/57/EC of the European Parliament and of the Council on the interoperability of
th
the rail system within the Community was published on 17 June 2008. The two previous EU Directives
96/48/EC and 2001/16/EC on the interoperability of the High Speed and Conventional rail systems within the
th
Community will therefore be repealed with effect from 19 July 2010. At this date the harmonised standards
for the railway field will have to refer to the new Directive.
Annex Z is amended to address this need.
1 Modification to the Foreword
Replace the fourth and fifth paragraphs with the following:
"This document has been prepared under a mandate given to CEN/CENELEC/ETSI by the European
Commission and the European Free Trade Association, and supports essential requirements of EU Directive
2008/57/EC.
For relationship with EU Directive 2008/57/EC, see informative Annex ZA, which is an integral part of this
document."
2 Modification to the Annex ZA
Replace the Annex ZA with the following new one:
"
Annex ZA
(informative)
Relationship between this European Standard and the Essential
Requirements of EU Directive 2008/57/EC
This European Standard has been prepared under a mandate given to CEN/CENELEC/ETSI by the European
Commission and the European Free Trade Association to provide a means of conforming to Essential
1)
Requirements of the Directive 2008/57/EC .
Once this standard is cited in the Official Journal of the European Union under that Directive and has been
implemented as a national standard in at least one Member State, compliance with the clauses of this
standard given in Table ZA.1 for High speed Rolling Stock, Table ZA.2 for Freight wagons and Table ZA.3 for
Locomotives and Passenger Rolling Stock confers, within the limits of the scope of
...