BS-EN-10306-2002.pdf

BRITISH STANDARD BS EN 10306:2002 Iron and steel Ultrasonic testing of H beams with parallel flanges and IPE beams The European Standard EN 10306:2001 has the status of a British Standard ICS 77.040.20 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BS EN 10306:2002 This British Standard, having been prepared under the direction of the Engineering Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 26 February 2002 © BSI 26 February 2002 ISBN 0 580 39177 9 National foreword This British Standard is the official English language version of EN 10306:2001. The UK participation in its preparation was entrusted to Technical Committee ISE/72, Methods of physical and metallographic testing, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 14, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM EN 10306 December 2001 ICS 77.040.20; 77.140.70 English version Iron and steel - Ultrasonic testing of H beams with parallel flanges and IPE beams Produits sidérurgiques - Contrôle par ultrasons des poutrelles à larges ailes à faces parallèles et des poutrelles IPE Eisen und Stahl - Ultraschallprüfung von H-Profilen mit parallelen Flanschen und IPE-Profilen This European Standard was approved by CEN on 30 September 2001. 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 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 Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels © 2001 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 10306:2001 E EN 10306:2001 (E) 2 Contents page Foreword3 1Scope 4 2Normative references 4 3Terms and definitions4 4Items for agreements.5 5Principle5 6Procedure .5 7Personnel qualification .6 8Ultrasonic test equipment.6 8.1Instrument.6 8.2Probe.7 8.3Calibration blocks7 8.4Reference blocks .7 8.5Couplant7 9Routine calibration and checking 7 10Stage of manufacture 7 11Surface condition.8 12Sensitivity setting 8 13Scanning.8 13.1General8 13.2Testing of the beams.10 13.3Scanning speed10 14Evaluation of discontinuities10 15Recording level and acceptance criteria.10 16Test report 11 Annex A (informative) List of equivalent terms in several European languages .13 Bibliography14 EN 10306:2001 (E) 3 Foreword This European Standard has been prepared by Technical Committee ECISS/TC 2 “Steel - Physico-chemical and non-destructive testing“, the secretariat of which is held by AFNOR. 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 June 2002, and conflicting national standards shall be withdrawn at the latest by June 2002. Annex A is informative. This standard includes a Bibliography. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. EN 10306:2001 (E) 4 1 Scope This European Standard specifies a reflection method for the ultrasonic testing of H beams with parallel flanges and IPE beams for the detection of presence of internal discontinuities. Mechanised, semi-automatic or automatic techniques may be used but should be agreed between the purchaser and the supplier. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text, and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments). EN 473, Non destructive testing - Qualification and certification of NDT personnel General principles. EN 583-2, Non-destructive testing - Ultrasonic examination Part 2: Sensitivity and range setting. EN 583-5, Non-destructive testing - Ultrasonic examination Part 5: Characterization and sizing of discontinuities. EN 1330-4, Non destructive testing - Terminology - Part 4: Terms used in ultrasonic testing. EN 12223, Non-destructive testing - Ultrasonic examination - Specification for calibration block n°1. EN 12668-1, Non-destructive testing - Characterization and verification of ultrasonic examination equipment Part 1: Instruments. EN 12668-2, Non-destructive testing - Characterization and verification of ultrasonic examination equipment Part 2: Probes. EN 12668-3, Non-destructive testing - Characterization and verification of ultrasonic examination equipment Part 3: Combined equipment. 3 Terms and definitions Definitions for general terms of non-destructive testing can be found in other European Standards, e.g. EN 1330-1 and EN 1330-2. For the purposes of this European Standard, the terms and definitions given in EN 1330-4 apply, together with the following : 3.1 manual testing testing by an operator applying an ultrasonic probe, or probes, to the flat product surface, manually executing the appropriate scanning pattern on the flat product surface and assessing ultrasonic signal indications on the electronic equipment screen either by direct viewing or by built-in signal amplitude alarm devices 3.2 automatic and semi-automatic testing testing using a mechanised means of applying the ultrasonic probe or probes to, and executing the appropriate scanning pattern on the flat product surface, together with ultrasonic signal indication evaluation by electronic means NOTESuch testing can be either fully automatic with no operator involvement, or semi-automatic when the operator performs basic equipment operation functions A list of equivalent terms in several European languages is given in annex A. EN 10306:2001 (E) 5 4 Items for agreements The following aspects concerning ultrasonic testing shall be agreed between the purchaser and supplier at the time of the enquiry or order : a) the manufacturing stage(s) at which ultrasonic testing shall be performed (see clause 10) ; b) the sounding plan (see clause 13) ; c) the Quality Class required, or the Quality Classes and the zones to which they apply (see clause 15) ; d) the applicable evaluation level and acceptance criteria if different from those detailed in Tables 1 and 2 ; e) whether any special scanning coverage, equipment or couplant is required in addition to that detailed in clauses 8 and 13 ; f) the scanning technique to be used if not manual ; g) the technique(s) to be used for setting sensitivity (see clause 12) ; h) whether the test is to be conducted in the presence of the purchaser or his representative ; i) whether a written procedure shall be submitted for approval by the purchaser (see clause 6). 5 Principle The method used is based on the reflection of ultrasonic waves (generally longitudinal), the direction of which is approximately perpendicular to the surface of the product. The examination consists of : a) locating and evaluation of discontinuity by comparing the amplitude of the discontinuity echo with the amplitude of the echo of flat-bottomed hole of a given diameter and located at the same depth as the discontinuity; NOTEOnly those discontinuities giving an echo amplitude equal to or greater than that obtained with the reference flat- bottomed hole are taken into consideration. b) determining the area of the discontinuity according to the -6dB beam width technique. The width of the discontinuity shall be determined perpendicular to the rolling direction. The length shall be determined in the rolling direction. The examination is carried out with a double transducer probe during the first ultrasonic scan (first back wall echo) and from one side only. 6 Procedure The inspection is normally carried out in the place of production or on the premises of the supplier. If specified on the order, the inspection may take place in the presence of the purchaser or his representative 1). Ultrasonic testing shall be performed in accordance with a written procedure. Where specified in the enquiry or order, the written procedure shall be submitted to the purchaser for approval prior to testing. 1)In this case, all steps should be taken to ensure that the production process is not disturbed. EN 10306:2001 (E) 6 This written procedure shall be in the form of : a) a product specification ; or, b) a procedure written specifically for the application ; or, c) this European Standard may be used if it is accompanied by examination details specific to the application. The procedure shall contain the following details as a minimum requirement : a) description of the item to be examined ; b) reference documents ; c) qualification and certification of examination personnel ; d) stage of manufacture at which the examination is carried out ; e) examination zones specified in terms of the applicable Quality Classes ; f) any special preparation of scanning surfaces, if applicable ; g) couplant ; h) description of examination equipment ; i) calibration ; j) scanning plan ; k) description and sequence of examination operations ; l) recording levels ; m) characterisation of discontinuities ; n) acceptance criteria ; o) examination report. 7 Personnel qualification It is assumed that ultrasonic testing is performed by qualified and capable personnel. In order to prove this qualification, it is recommended to certify the personnel in accordance with EN 473 or equivalent. 8 Ultrasonic test equipment 8.1 Instrument The instrument for manual testing shall feature A-scan presentation and shall comply with the requirements of EN 12668-1. EN 10306:2001 (E) 7 8.2 Probe 8.2.1 General The double transducer probes to be used for manual testing shall conform to the requirements of EN 12668-2. Additionally, other types of probes may be used. Such supplementary probes need not comply with EN 12668-2 requirements. 8.2.2 Nominal frequency Probes shall have a nominal frequency in the range from 2 MHz to 5 MHz. 8.2.3 Type of probe The greatest transducer dimension shall be in the range from 9 mm to 25 mm unless otherwise agreed. 8.3 Calibration blocks Calibration blocks shall conform to the requirements detailed in EN 12223. 8.4 Reference blocks Reference blocks shall be made from a material having similar acoustic properties to the product to be examined. The surface condition of the reference block shall be representative of the surface condition of the product to be examined. Unless otherwise specified the reference block shall contain at least three reflectors covering the entire depth range under examination. The form of the reference block will depend upon the application. The bottom of the holes shall be as flat a practicable, parallel to the ultrasound entry surface and free from pits or score marks that significantly degrade its ultrasonic reflectivity. The tolerances on the diameter of the flat-bottomed hole or width of recess shall be ± 5 %. 8.5 Couplant The couplant used shall be appropriate to the application. The same type of couplant shall be used for calibration, setting sensitivity, scanning and evaluation of discontinuities. After examination, couplant shall be removed if its presence could adversely affect later manufacturing or inspection operations or the integrity of the product. NOTEWater is normally used but other coupling media may be used at the discretion of the supplier. 9 Routine calibration and checking The combined equipment (instrument and probes) for manual testing shall be calibrated and checked in accordance with the requirements detailed in EN 12668-3. 10 Stage of manufacture Ultrasonic testing shall be performed in the delivery condition unless otherwise agreed at the time of enquiry and order. EN 10306:2001 (E) 8 11 Surface condition The products are normally examined without any special surface preparation. Scanning surfaces shall be free from paint, non-adhering scale, dry couplant, surface irregularities or any other substance which could reduce coupling efficiency, hinder the free movement of the probe or cause errors in interpretation. The surface condition shall be considered acceptable providing the specified quality class can be achieved. 12 Sensitivity setting Calibration of the ultrasonic test equipment for use particularly requires that the time base, power and amplification be determined according to EN 583-2. The time base is calibrated to a value at which the distance, on the oscilloscope screen, between the interface echo and back-wall echo is sufficient to allow a defect echo to be clearly detected bet