1 Workshop on noise differentiated track access charges Brussels – April 27 th, 2010 Denis BIASIN – Rolling-stock TSI Sector – Interoperability Unit Composite

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Workshop on noise differentiated track access charges

Brussels – April 27th, 2010

Denis BIASIN – Rolling-stock TSI Sector – Interoperability Unit

Composite Brake Blocks in the TSIs*

*Technical Specifications for Interoperability

Table of Content

Reminder: from Directive to harmonised standard Composite brake blocks in the TSIs The brake block is an Interoperability Constituent The assessment procedure (current and target) State of play - UIC/ERA agreement Preformance test parameters in the updated

documents The way forward (issues, further steps and work plan)

27/04/2010 Approval of Composite Brake Blocks 2

Directive > TSI > harmonised standards

27/04/2010 Approval of Composite Brake Blocks

http://www.era.europa.eu/core/interoperability/Pages/Documents.aspx

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TSIs available or under development

27/04/2010 Approval of Composite Brake Blocks

Conventional High speed

LOC& PAS

LOC& PAS WAGWAGNOINOI

CR INFCR INF

CR ENECR ENE

TAFTAF

CR CCSCR CCS PRMPRM

SRT

TAPTAP

HS OPEHS OPE

HS ENEHS ENE

HS INFHS INF HS CCSHS CCS

CR OPECR OPE

Transverse

RSTRST NOINOI

CR CCSCR CCS

SRT

CR INFCR INF

CR ENECR ENE

TAFTAFCR OPECR OPE

CR CCSCR CCS

SRT

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Composite Brake Blocks in the TSIs

WAG TSI – Annex I – I.1010.1 general10.2 material (no requirement for composite BB)10.3 geometry (compatibility with brake holder)Assessment - Annex P: Design and Product assessments of composite BB: the test procedures are open points (P.1.10. and P.2.10.)


NOI TSI – Retrofitting of existing fleet – clause 7.6.1If a wagon during renewal or upgrading is equipped with composite blocks and without adding additional noise sources to the wagon, it is to be assumed without testing that the values for pass-by noise are fulfilled.

Brake Block: Interoperability Constituent

In the WAG TSI, the brake block is considered as

Interoperability Constituent Definition in Chapter 1 - Art.1 (f) of the Directive (2008/57/EC)

constituent upon which Interoperability relies assessable independently from the subsystem

Addressed in Chapter III - Art 10 to 14 of the Directive ‘EC’ declaration of conformity or of suitability for use established according to the provisions of Article 13

assessment of conformity and of suitability for use carried out by the NoBo.


Assessment procedure (1)

During the transitional period: tests performed under supervision of UIC:

rig testing of BB (performance, winter conditions, thermal capacity, shuntage) according to UIC 541-4; in service testing according to UIC 541-4 and 544-1

approval given by UIC brake committee UIC informs ERA, which updates the list of ‘K’ blocks approved without restriction in ERA technical document TD2 transparency only ensured by publication of the UIC leaflets as ERA technical documents


Assessment procedure (2)

What ERA is aiming at (stabilised process): test performed by the manufacturer according to specifications of the TSI:

rig testing on homologated test rigs (performance, winter conditions, thermal capacity, shuntage); in service testing (suitability for use) where required

assessment of the conformity and of the suitability for use by a NoBo the NoBo issues the certificate (of conformity and of suitability for use) to the Manufacturer the manufacturer places the product on the market


Status of the UIC/ERA agreement

Contract signed in 2008: UIC 541-4 revised to make testing process transparent; - done UIC 544-1 revised (in particular Annex F) to clarify tests to be made on wagons equipped with composite BBs; - still pending List of fully approved ‘K’ blocks; - published in July 2009 Side document: ‘design rules for composite brake blocks (K)’

Out of the contract: Side document: ‘design rules for composite brake blocks (LL)’


Performance Test parameters (1)

Brake blocks (K, L and LL) - UIC 541-4: value and stability of dynamic friction coefficient (spread limits); behaviour under wet conditions (deviation limited to +/- 15%); behaviour in winter conditions (deviation within +/- 15% for rig test, +/- 10% for line tests) wheel temperature build up static friction coefficient metallic inclusions shuntage geometry protection against incorrect use wear limit indication material (conformity to prototype, harmless to health) mechanical requirements (shear, bending resistance, thermal capacity) marking


Performance Test parameters (2)

Brake performance tests on the subsystem – TSI annex P.2.10. - UIC 544-1: assessment according to Annex S of the TSI; one complete winter period of operational service in Northern Europe ; assessment for wheel roughness according to NOISE TSI shuntage (effect on electrical resistance of wheelset)


Way forward – remaining issues

limited number of rig testing facilities available (2 for winter conditions – 3 for shuntage tests) involvement of a UIC expert still necessary:

the requirements in UIC 541-4 cannot be fully met by any available composite BB;

final decision in the hands of the UIC brake committee area of use limited:

wheel diameter 870 to 920mm maximum axle load 22.5t maximum speed 120km/h maximum gradient 4%


Way forward – further steps

ERA is undertaking the following tasks: sort out requirements strictly related to interoperability describe test rig specifications (base UIC B 126Rp37) lay down assessment criteria in a way that makes assessment possible by an independent body (NoBo) extend the area of use (mainly)

wheel dia. Smaller than 870 or bigger than 920mm, axle load higher than 22.5t (25t today in the INF TSI)

Extend the process to ‘LL’ blocks


Way forward – work plan

Tentative (Q4-2010 to end 2012 – to be confirmed): finalise the specifications related to ‘K’ blocks with a Working Party of experts under the leadership of ERA:

sort out requirements relevant for the TSI set limit values (where and as appropriate) describe assessment methods and tests procedures issue a request for EN standard to CEN

extend these specifications to ‘LL’ blocks assess issues specific to ‘LL’ blocks describe related assessment methods and tests procedures modify the request for standard or issue a new request


Conclusion

Retrofitting an existing wagon with composite brake blocks = compliance to the NOISE TSI;

Current process long and tedious (UIC involved in each decision); ERA aims at making the approval process transparent and easier:

Specification in the TSI of requirements that enable the applicant (the manufacturer) to perform the tests on a non-discriminatory basis;

Specifications laid down clear enough to allow the assessment by a NoBo The NoBo shall carry out the assessment and issue the certificate of

conformity and of suitability for use These provisions will be implemented in a forthcoming revision

of the WAG TSI as soon as they are validated. The most appropriate procedure will be investigated.



Thank you for your attention