EN 13231-3:2006

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Railway applications - Track - Acceptance of works - Part 3: Acceptance of rail grinding, milling and planing work in trackŽelezniške naprave – Zgornji ustroj – Prevzem del – 3. del: Prevzemni kriteriji
za brušenje, profiliranje in skobljanje vgrajenih tirnicApplications ferroviaires - Voie - Réception des travaux - Partie 3: Criteres de réception des travaux de meulage, fraisage et rabotage des rails en voieBahnanwendungen - Oberbau - Abnahme von Arbeiten - Teil 3: Abnahme von Schleif-, Fräs- und Hobelarbeiten an Schienen im GleisTa slovenski standard je istoveten z:EN 13231-3:2006SIST EN 13231-3:2006en45.080Rails and railway componentsICS:SLOVENSKI
STANDARDSIST EN 13231-3:200601-oktober-2006

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 13231-3May 2006ICS 45.080 English VersionRailway applications - Track - Acceptance of works - Part 3:Acceptance of rail grinding, milling and planing work in trackApplications ferroviaires - Voie - Réception des travaux -Partie 3: Critères de réception des travaux de meulage,fraisage et rabotage des rails en voieBahnanwendungen - Oberbau - Abnahme von Arbeiten -Teil 3: Abnahme von Schleif-, Fräs- und Hobelarbeiten anSchienen im GleisThis European Standard was approved by CEN on 13 April 2006.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, 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.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2006 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 13231-3:2006: E

Procedures to verify reference instruments.16 A.1 Longitudinal profile.16 A.1.1 Principle.16 A.1.2 Calibration beam.16 A.1.3 Coordinate Measuring Machine (CMM).17 A.1.4 Measurement of the calibration beam using the CMM.17 A.1.5 Data analysis.17 A.1.6 Acceptance of calibration beam.18 A.1.7 Measurement of the calibration beam using the test instrument.18 A.1.8 Data analysis using the test instrument.18 A.1.9 Acceptance criteria for reference instruments.19 A.1.10 Test report.20 A.2 Transverse profile.20 A.2.1 Principle.20 A.2.2 Calibration jig.20 A.2.3 Coordinate measuring machine (CMM).20 A.2.4 Calibration jig verification.20 A.2.5 Rail measurements using the test instrument.21 A.2.6 Acceptance of test instruments.21 A.2.7 Test report.21 Annex B (informative)
Procedures to demonstrate correlation of approved and reference instruments.26 B.1 Longitudinal profile.26 B.1.1 Principle.26 B.1.2 Characteristics of the test sites.26 B.1.3 Measurements required.27

Example of acceptance documentation for rail re-profiling work.32 Annex D (informative)
Calculation of moving average RMS and moving average peak-to-peak values.34 D.1 Moving average RMS values.34 D.2 Moving average peak-to-peak values.35 Bibliography.36

3.9 grinding facet approximately plane sector of the profile of a rail reprofiled by grinding, which is produced by a single grinding stone whose axis of rotation is normal to the rail's longitudinal axis
3.10 moving average of peak-to-peak amplitudes average depth of individual irregularities in a profile which is calculated as a quasi-continuous function of distance along the track; the depth is calculated for that section of the profile which lies within a window of specified length (see Annex D); the function with distance is calculated by incrementing the window along the profile by a distance equal to the sampling interval 3.11 moving average of root-mean-square (RMS) amplitudes root-mean-square amplitude of a profile which is calculated as a quasi-continuous function of distance along the track; the average is calculated for that section of the profile which lies within a window of specified length (see Annex D); the function with distance is calculated by incrementing the window along the profile by a distance equal to the sampling interval 3.12 percentage exceedance percentage length of a test site over which a measurement of the amplitude of the filtered profile exceeds a prescribed limit 3.13 phase correct profile filter profile filter which does not cause phase shifts which lead to asymmetrical profile distortions (see EN ISO 11562:1997)

3.15 profile filter electronic device which separates profiles into long-wave and short-wave components, or into components within a specified wavelength range
3.16 rail crown that point on the rail-head surface that is aligned with the centre-line of the web 3.17 range of deviation difference between the maximum and minimum values of the deviation of the measured profile (see Figure 3) 3.18 reference instrument instrument for the measurement of longitudinal or transverse profile the performance of which has been verified in accordance with the procedure agreed upon between the contractor and the customer (an example is given in Annex A) 3.19 reference line line normal to the track's longitudinal axis and tangent to the heads of both rails
3.20 reference point A that point towards the gauge side of a reference rail at which the angle between the reference line and the tangent to the profile is equal to the specified angle of inclination (see Figure 1)
3.21 reference point B1 that point on the gauge face of a reference rail which lies 14 mm below that line that is parallel to the reference line and which passes through reference point A (see Figure 1(a)) 3.22 reference point B2 that point on the gauge corner of a reference rail at which a line which is tangent to the rail lies at an angle of 45° to the reference line (see Figure 1(b)) 3.23 reference profile transverse profile to which rail is to be reprofiled, within the specified tolerances 3.24 reference rail rail with the reference profile, at the desired angle of inclination relative to the reference line (see Figure 1(a)) NOTE In switch and crossing work, with rails laid vertically, it may be desired to reprofile the rail so that its head profile matches that of the adjacent plain line in which rails are inclined at, for example, 1 in 20. In this case, the angle of inclination of the reference rail will be 2,86° (1 in 20). 3.25 reprofiling site continuous length of track where the rail is to be reprofiled

3.27 sampling interval distance between successive points at which a continuous record of the traced profile is sampled in order to produce the primary profile 3.28 test instrument instrument whose use as a reference instrument or an approved instrument is being tested 3.29 traced profile profile of the rail as recorded by the measuring system 3.30 transition length initial or final section of a length of track where the validity of a measurement of longitudinal or transverse profile is questionable for a variety of reasons, including settling of electronic and digital components and circuits 3.31 window that section of a record of longitudinal profile within which an average amplitude of the record is calculated, and whose length is specified 4 Longitudinal profile 4.1 Principle Measurements are made using either a reference instrument (see 3.18) or an approved instrument (see 3.2). Approved instruments do not offer the same accuracy as reference instruments but are generally adequate for the purpose of demonstrating compliance with the requirements of this standard. NOTE An example of an approved instrument is the type of system used for routine measurements on grinding trains. Some of the systems used for routine measurements on reprofiling trains fall into this category. In accordance with current practice, limits are set on the magnitude of the irregularities that can remain in track after a reprofiling operation. It is recognised, however, that it can be uneconomic to achieve 100 % compliance with these, particularly where isolated top faults, such as wheelburn, exist prior to reprofiling. Two Classes are therefore offered, differentiated by the percentage of the reprofiled track meeting the specified criteria. Where isolated top faults exist, Class 2 offers a lower cost option compared to Class 1 as it will be achieved with fewer passes. However a larger number of isolated non-compliant zones will remain in the reprofiled site. Class 1 also includes limits for very short (10 mm – 30 mm) and very long (300 mm – 1 000 mm) wavelength residual irregularities; these are not included in Class 2. Where corrugations in these wavebands are required to be removed it will also be necessary to specify Class 1. This standard permits the quality of the longitudinal profile to be characterised in any one of the three ways, at the discretion of the client. These are the moving average RMS amplitude of the irregularities in a given waveband, the moving average peak-to-peak amplitude of irregularities in a given waveband and the number

(a) Detailed section of railhead, showing reference points A and B1 (α: angle of rail inclination) Key 1 reference line 2 line through A parallel to reference line 3 14 mm 4 reference point B1 5 reference point A

(b) Detailed section of railhead, showing reference point A and B2 (α: angle of rail inclination) Key 1 reference line 2 reference point B2 3 reference point A Figure 1 — Definition of terms, and determination of reference points A, B1 and B2 on the transverse profile
Key 1 reference line 2 re-profiling zone 3 gauge side 4 field side Figure 2 — Re-profiling zone

NOTE In this example the range of deviation is negative (measured profile below the reference rail). Key 1 range of deviation 2 point A 3 reference profile - - - 4 measured profile ------ 5 point B1 or B2 Figure 3 — Deviation of measured transverse profile from reference profile

Procedures to verify reference instruments A.1 Longitudinal profile A.1.1 Principle The longitudinal profile of a machined strip on a purpose built beam is measured using both the test instrument and a Coordinate Measuring Machine (CMM). The test instrument is assessed for its ability to make both average peak-to-peak and RMS amplitude measurements of the profile of the test strip. The test instrument is deemed to be verified as a reference instrument for the acceptance of rails on the basis of moving average RMS values (see 4.3.2) if there is satisfactory agreement between the RMS values obtained using the test instrument and those made using the CMM. Similarly, the test instrument is deemed to be verified as a reference instrument for the acceptance of rails on the basis of moving average peak-to-peak values (see 4.3.3) if there is satisfactory agreement between the average peak-to-peak values obtained using the test instrument and those made using the CMM. A test instrument accepted as a reference instrument for the acceptance of rails on the basis of moving average peak-to-peak values is also deemed to be verified for the acceptance of rails on the basis of the numbers of irregularities exceeding a specified amplitude (see 4.3.4). The procedure involves the assessment of the test instrument for all wavelength ranges and all rail acceptance criteria. Acceptance of the test instrument as a reference instrument may however be limited to specified wavelength ranges and to measurements of either RMS or average peak-to-peak values. NOTE Verification takes place at ambient temperature. Users of reference instruments are recommended to seek the guidance of the instrument manufacturer as to the temperature range over which the verification can be expected to remain valid. A.1.2 Calibration beam The machined strip on the calibration beam shall be not less than 20 mm wide and three times as long as the maximum wavelength for which the test instrument is to be verified. NOTE 1 An additional running-in length at each end of the machined strip may be desirable to avoid the possibility of transient effects corrupting the beginning of a profile record. Irregularities of the wavelengths and peak-to-peak amplitudes shown in Table A.1 shall be present on the machined strip.
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