1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationRailway applications Track Acceptance of worksPart 4: Acceptance of reprofiling rails in switches and crossingsBS EN 13231-4:2013National forewordThis British Standard is the UK
2、implementation of EN 13231-4:2013.The UK committee submitted a negative vote at the Enquiry and Formal Votestages of this standard, principally on the basis that the standard providesinadequate guidance regarding the measurements to be taken and acceptance criteria to be applied for the reprofiling
3、of switch rails and railswithin the crossing area. The proposed acceptance criteria, which are basedon those for plain line, are not appropriate for the far more complicatedreprofiling that is undertaken in switch and crossing work.The UK participation in its preparation was entrusted to Technical C
4、ommitteeRAE/2, Railway Applications Track.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisions of acontract. Users are responsible for its correct application. The British Standards
5、Institution 2013.Published by BSI Standards Limited 2013 ISBN 978 0 580 74830 1 ICS 93.100Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 May 2013.Amendments
6、issued since publicationDate Text affectedBRITISH STANDARDBS EN 13231-4:2013EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 13231-4 April 2013 ICS 93.100 English Version Railway applications - Track - Acceptance of works - Part 4: Acceptance of reprofiling rails in switches and crossings Applic
7、ations ferroviaires - Voie - Rception des travaux - Partie 4: Critres de rception des rails reprofils dans les appareils de voie Bahnanwendungen - Oberbau - Abnahme von Arbeiten - Teil 4: Abnahme von Reprofilierungsarbeiten in Weichen und Kreuzungen This European Standard was approved by CEN on 1 Ma
8、rch 2013. 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 obt
9、ained 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 C
10、EN-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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Irelan
11、d, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Ma
12、rnix 17, B-1000 Brussels 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 13231-4:2013: EBS EN 13231-4:2013EN 13231-4:2013 (E) 2 Contents Page Foreword . 3 1 Scope 4 2 Normative references . 4 3 Terms and definitions 4 4 Longit
13、udinal profile 4 4.1 Principle 4 4.2 Measurements required . 5 4.3 Acceptance criteria for longitudinal profile 5 4.3.1 General . 5 4.3.2 Peak-to-peak value . 5 5 Transverse profile 6 5.1 Principle 6 5.2 Areas in crossings which are limited for reprofiling 6 5.3 Measurements required . 6 5.4 Accepta
14、nce criteria for the transverse profile 6 6 Material removal . 7 7 Surface roughness . 7 8 Visual appearance: acceptance criteria 7 9 Acceptance documentation . 7 Bibliography 9 BS EN 13231-4:2013EN 13231-4:2013 (E) 3 Foreword This document (EN 13231-4:2013) has been prepared by Technical Committee
15、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 October 2013, and conflicting national standards shall be withdrawn at t
16、he latest by October 2013. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document has been prepared under a mandate given to CE
17、N by the European Commission and the European Free Trade Association. This European Standard is one of the series EN 13231, Railway applications Track Acceptance of works, as listed below: Part 1: Works on ballasted track Plain line; Part 2: Works on ballasted track Switches and crossings; Part 3: A
18、cceptance of reprofiling rails in track; Part 4: Acceptance of reprofiling rails in switches and crossings; Part 5: Procedures for rail reprofiling in plain line, switches, crossings and expansion devices (currently being elaborated). According to the CEN-CENELEC Internal Regulations, the national s
19、tandards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania
20、, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 13231-4:2013EN 13231-4:2013 (E) 4 1 Scope This European Standard lays down the technical requirements and the measurements to be made for the acce
21、ptance of work for reprofiling longitudinally and/or transversely the heads of railway rails in switches, crossings and expansion devices. For acceptance purposes two classes of longitudinal profile and three classes of transverse profile tolerance are defined. It applies to reprofiled vignole railw
22、ay rails and associated switch rails 46 kg/m and above. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest
23、 edition of the referenced document (including any amendments) applies. EN 13231-3:2012, Railway applications Track Acceptance of works Part 3: Acceptance of reprofiling rails in track 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 13231-3:2012 apply
24、. For the definitions of measurement instruments also, see EN 13231-3:2012. 4 Longitudinal profile 4.1 Principle Measurements are made using either a reference instrument, or an approved instrument, see EN 13231-3:2012, Annex A or Annex B. The approved instruments shall be verified according to EN 1
25、3231-3:2012, Annex D. 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 measureme
26、nts on reprofiling 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, th
27、at 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
28、 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 to 30 mm) and very long (300 mm to 1 000 mm) wavelen
29、gth 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. BS EN 13231-4:2013EN 13231-4:2013 (E) 5 4.2 Measurements required The longitudinal profile of the finished re-profiled rail i
30、n switches and crossings shall be recorded either with machine mounted or manual measuring systems, either a reference instrument or an approved instrument. Where independent verification is required a reference instrument shall be used. All measurements undertaken in order to demonstrate compliance
31、 with 4.3 shall be recorded. Generally continuously working systems are to be used. In this case the rail containing the frog shall be measured only in “Zone G“, see Figure 1, the opposite rail shall be measured in the total ground length. If such a system is out of order or not available recording
32、details shall be settled in the contract. NOTE For measurements in the wavelength range (10 mm to 30 mm), at present it is unlikely that instruments other than reference instruments will have sufficient accuracy. Longitudinal profile measurements shall be made within a distance of 15 mm laterally on
33、 the rail from the rail crown for producing the traced profile. It is recommended that a digital form of the traced profile, the primary profile, be used for subsequent analysis. The measurements can be undertaken immediately after work or at the latest within 8 days of reprofiling or after the trac
34、k has carried 0,3 MGT (Million Gross Tons) of traffic. 4.3 Acceptance criteria for longitudinal profile 4.3.1 General The acceptance of reprofiled sites shall be on the basis of percentage of irregularities shown in Table 1. 4.3.2 Peak-to-peak value The percentage of any site in which the peak-to-pe
35、ak value exceeds the value specified in Table 1 shall be calculated. The primary or traced profile shall be processed to provide a filtered profile within each of the wavelength ranges given in Table 2. Table 1 Acceptance criteria for longitudinal profile expressed in terms of allowable percentages
36、of exceeding for continuous measuring Wavelength range (mm) 10 to 30 30 to 100 100 to 300 300 to 1 000 Class 1 5 % 5 % 5 % 5 % Class 2 No requirement 10 % 10 % No requirement Table 2 Acceptance criteria for peak-to-peak limits Wavelength range (mm) 10 to 30 30 to 100 100 to 300 300 to 1 000 Limit of
37、 peak-to-peak values (mm) 0,010 0,010 0,015 0,075 The classification concerns the total length (Zones F, G and H in Figure 1) of the rail opposite the frog and Zone G only of the rail containing the frog. BS EN 13231-4:2013EN 13231-4:2013 (E) 6 No exceedances are allowed for manual measurements. 5 T
38、ransverse profile 5.1 Principle Measurements are made using either a reference instrument, see EN 13231-3:2012, 3.16 or an approved instrument, see EN 13231-3:2012, 3.2. Approved instruments do not offer the same accuracy as reference instruments but in general they are adequate for the purpose of d
39、emonstrating compliance with the requirements of this standard. Reprofiling can be undertaken for a variety of reasons. Where reprofiling is undertaken purely for the removal of corrugation, there may be less need for the rail to be reprofiled with precision. In other cases, it may be necessary for
40、the reprofiled rail to match closely the ideal profile, represented by the reference rail, see EN 13231-3:2012, 3.22. A range of classes is therefore included to enable the client to specify the level of precision that is appropriate for the site to be reprofiled. NOTE Where reprofiling is undertake
41、n to improve conicity, class Q, see 5.4, is likely to be appropriate. The match between the reprofiled rail and the profile of the reference rail is determined by aligning the two at two points and measuring maximum difference between them, see EN 13231-3:2012, Figure 1. For straight track, these po
42、ints of alignment generally approximate to the highest point of the rail and the gauge point. On the high rail of curves this method is not applicable if side wear has occurred and an alternative method of alignment is therefore used. 5.2 Areas in crossings which are limited for reprofiling The area
43、s where the switchblade touches stock rail (Zone F shown in Figure 1) and the frog area (Zone H shown in Figure 1) cannot be reprofiled completely. The infrastructure manager can define applicable restrictions. 5.3 Measurements required The transverse profile of each finished, reprofiled rail shall
44、be measured using either a reference instrument or an approved instrument. Where independent verification is required a reference instrument shall be used, whereby measurements of each rail shall be made at an interval of not less than 10 m throughout the reprofiling site. A deviation of 0,1 mm betw
45、een the reference instrument and approved instrument would be acceptable according to EN 13231-3:2012, Annex B. All measurements undertaken in order to demonstrate compliance with 5.3 shall be recorded. The measurements can be undertaken immediately after work or at the latest within 8 days of repro
46、filing or after the track has carried 0,3 MGT (Million Gross Tons) of traffic. NOTE It is preferable for measurements to be made immediately after re-profiling. After reprofiling rails in switches and crossings and rail expansion devices specific measurements are required for running safety. 5.4 Acc
47、eptance criteria for the transverse profile Each measured profile shall be aligned with the appropriate reference rail so that the reference points A and B1, or A and B2according to EN 13231-3:2012, Figure 1, on the reference rail coincide with points on the measured profile. The alignment shall be
48、undertaken without rotation of either profile. Reference points A and B2shall be used on side-worn rails and A and B1elsewhere. BS EN 13231-4:2013EN 13231-4:2013 (E) 7 The percentage of measurements in which the range of deviation is less than 0,6 mm, 1,0 mm and 1,7 mm shall be calculated and shall
49、not be less than the values given in Table 3 for the class specified. When continuously working measurement systems are used the rail containing the frog shall be measured only in “Zone G“, see Figure 1, and only if this area is longer than 30 m. The opposite rail shall be measured in the total ground length. With spot-checks systems one recording per rail shall be made in front (measurement points 1 and 2) of the switch, one in the centre of the intermediate rail (measurement points 3 and 4 for the main track and - if applic
