EN 12668-3:2013
(Main)Non-destructive testing - Characterization and verification of ultrasonic examination equipment - Part 3: Combined equipment
Non-destructive testing - Characterization and verification of ultrasonic examination equipment - Part 3: Combined equipment
This European Standard describes methods and acceptance criteria for verifying the performance of ultrasonic equipment (i.e. instrument and probe combined as defined in EN 12668 1 and EN 12668 2) by the use of appropriate standard calibration blocks. These methods are not intended to prove the suitability of the equipment for particular applications. The methods described are suitable for the use by operators working under site or shop floor conditions. The methods only apply to pulse echo equipment using A-scan presentation, with gain controls or attenuators calibrated in steps not greater than 2 dB and used essentially in contact testing. These methods are specifically intended for manual testing equipment. For automated testing different tests can be needed to ensure satisfactory performance.
Zerstörungsfreie Prüfung - Charakterisierung und Verfizierung der Ultraschall-Prüfausrüstung - Teil 3: Komplette Prüfausrüstung
Diese Europäische Norm legt Verfahren und Zulässigkeitskriterien fest, mit denen die Leistungsfähigkeit der Ultraschall Prüfausrüstung (d. h. mit zusammengeschaltetem Prüfgerät und Prüfkopf nach EN 12668 1 und EN 12668 2) durch die Anwendung geeigneter, genormter Kalibrierkörper nachgewiesen werden. Diese Verfahren sind nicht dazu gedacht, die Eignung der Prüfausrüstung für bestimmte Anwendungen nachzuweisen. Die beschriebenen Verfahren können vom Prüfer selber unter den Bedingungen des Prüfortes durchgeführt werden. Diese Verfahren gelten nur für Impulsecho Prüfgeräte mit A Bild Darstellung, mit Verstärkungsreglern oder Abschwächern, die in Stufen nicht größer als 2 dB kalibriert sind und die hauptsächlich für die Prüfung im direkten Kontakt angewendet werden. Diese Verfahren sind insbesondere für die Prüfausrüstung zur manuellen Prüfung vorgesehen. Für die automatisierte Prüfung können andere Verfahren erforderlich sein, um das zufriedenstellende Leistungsvermögen zu bestätigen.
Essais non destructifs - Caractérisation et vérification de l'appareillage de contrôle par ultrasons - Partie 3: Equipement complet
La présente Norme européenne décrit les méthodes et les critères d'acceptation permettant de vérifier la performance d'un appareillage ultrasonore (c’est-à-dire : l'appareil combiné au traducteur comme défini dans l’EN 12668-1 et l’EN 12668-2) à l'aide de blocs d'étalonnage normalisés appropriés. Ces méthodes ne visent pas à établir l'aptitude à l'emploi de l'appareillage pour des applications particulières. Les méthodes décrites sont celles à utiliser par des opérateurs travaillant sur site ou en atelier. Elles ne s'appliquent qu'aux seuls instruments de contrôle par réflexion avec représentation de type A, commandes de gains ou dispositifs d'atténuation étalonnés par 2 dB maximum et qui sont essentiellement utilisés pour le contrôle par contact. Ces méthodes sont conçues spécifiquement pour l'appareillage utilisé pour le contrôle manuel. Pour le contrôle automatique, des essais différents peuvent être nécessaires pour garantir une performance satisfaisante.
Neporušitvene preiskave - Karakterizacija in preverjanje naprav za ultrazvočne preiskave - 3. del: Sestavljeni sistemi
Ta evropski standard opisuje metode in kriterije sprejemljivosti za preverjanje delovanja ultrazvočne opreme (tj. instrument in sonda v eni napravi, kot določata standarda EN 12668-1 in EN 12668-2) z uporabo primernih standardnih ploščic za umerjanje. Te metode niso namenjene dokazovanju primernosti opreme za posebne uporabe. Opisane metode so primerne za izvajalce, ki delajo v razmerah na terenu ali na delovnem mestu. Metode veljajo le za opremo s pulzno-odbojnim delovanjem z A-scan prikazom s krmilniki ojačanja ali atenuatorji, kalibriranimi na stopnje, ki niso večje od 2 dB, in se uporabljajo predvsem v kontaktnih preizkusih. Te metode so namenjene zlasti ročnemu preskušanju opreme. Za avtomatsko preskušanje so morda potrebni drugačni preizkusi, da se zagotovi zadovoljivo delovanje.
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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Zerstörungsfreie Prüfung - Charakterisierung und Verfizierung der Ultraschall-Prüfausrüstung - Teil 3: Komplette PrüfausrüstungEssais non destructifs - Caractérisation et vérification de l'appareillage de contrôle par ultrasons - Partie 3: Equipement completNon-destructive testing - Characterization and verification of ultrasonic examination equipment - Part 3: Combined equipment19.100Neporušitveno preskušanjeNon-destructive testingICS:Ta slovenski standard je istoveten z:EN 12668-3:2013SIST EN 12668-3:2014en,fr,de01-julij-2014SIST EN 12668-3:2014SLOVENSKI
STANDARDSIST EN 12668-3:2001/A1:2004SIST EN 12668-3:20011DGRPHãþD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 12668-3
November 2013 ICS 19.100 Supersedes EN 12668-3:2000English Version
Non-destructive testing - Characterization and verification of ultrasonic examination equipment - Part 3: Combined equipment Essais non destructifs - Caractérisation et vérification de l'appareillage de contrôle par ultrasons - Partie 3: Equipement complet
Zerstörungsfreie Prüfung - Charakterisierung und Verfizierung der Ultraschall-Prüfausrüstung - Teil 3: Komplette Prüfausrüstung This European Standard was approved by CEN on 29 September 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 obtained 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 CEN-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, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Avenue Marnix 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 12668-3:2013: ESIST EN 12668-3:2014
3 Foreword This document (EN 12668-3:2013) has been prepared by Technical Committee CEN/TC 138 “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 May 2014, and conflicting national standards shall be withdrawn at the latest by May 2014. 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 supersedes EN 12668-3:2000. This European Standard is composed of the following parts: — 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 (this document). According to the CEN-CENELEC Internal Regulations, the national standards organizations 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, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. SIST EN 12668-3:2014
5 Table 1 — Tests for combined equipment Subclause Title Frequency of checking 3.2.1 Linearity of timebase Weekly a 3.2.2 Linearity of equipment gain Weekly a 3.3.1 Probe index Daily 3.3.2 Beam angle Daily 3.4.2 Physical state and external aspects Daily 3.4.3 Sensitivity and signal-to-noise ratio Weekly a 3.4.4 Pulse duration Weekly a a To simplify the recording of weekly checks it may be more convenient for the user to perform them each time the equipment is used. 3.2 Ultrasonic instrument checks 3.2.1 Linearity of the timebase 3.2.1.1 General This check is carried out using a standard calibration block defined in EN ISO 2400 or EN ISO 7963, and a normal-beam compression wave probe or shear wave angle-beam probe. The linearity shall be checked over a range at least equal to that which is to be used in subsequent testing. Where appropriate, due allowance can be made for the fact that a range of 91 mm for compressional waves in steel is equivalent to a range of only 50 mm for shear waves. 3.2.1.2 Procedure Place the probe on the calibration block in a position where the range to the last backwall or radius echo is equal to or exceeds the range over which the linearity shall be checked. Adjust the timebase so that the first and the sixth backwall echoes coincide with the first and last scale marks respectively. Check the linearity with the four other echoes. Bring the backwall echoes, in turn, to approximately the same height e.g. 80 % full screen height. The leading edge of each echo should line up with the appropriate graticule line. Check that any deviations from the ideal positions are within the specified tolerance when measured at the same screen height when the first and the sixth echo were positioned. 3.2.1.3 Tolerance The deviation from linearity shall not exceed ± 2 % of full screen width. 3.2.1.4 Frequency of checking The check shall be carried out at least once per week for ultrasonic instruments to be used during that week. SIST EN 12668-3:2014
7 3.3 Probe checks 3.3.1 Probe index point 3.3.1.1 General This check applies only to angle beam probes. The probe index point can be checked on the standard EN ISO 2400 or EN ISO 7963 calibration block each of which has a cylindrical reflector (quadrant). The probe index point shall be checked prior to checking the beam angle. 3.3.1.2 Procedure Position the probe on the appropriate side of the block to obtain a reflection from the quadrant. Move the probe backwards and forwards to maximize the amplitude of the reflected signal, taking care to move the probe parallel to the block sides. When the amplitude is at maximum, the true probe index point will correspond to the engraved line on the block which marks the geometrical centre of the quadrant. The probe index point measurement should be repeatable to within ± 1 mm. If the measured position differs from the existing mark by more than 1 mm the new position shall be marked on the probe sides, and recorded, and shall be used in subsequent probe checks and defect plotting. 3.3.1.3 Tolerance Tolerance will depend on application, but for plotting of defects it is recommended that the probe index point position is known to within ± 1 mm. 3.3.1.4 Frequency of checking This will depend on the rate of probe wear due to usage and to the roughness of the scanning surface. When a probe is in continuous use, the check shall be carried out at least every few hours; otherwise, a daily check shall be performed for probes to be used during that day. 3.3.2 Beam angle 3.3.2.1 General The reference blocks defined in EN ISO 2400 or EN ISO 7963 provide a means of rapidly checking the beam angle. If a higher accuracy is needed, the angle shall be determined using one of the methods described in EN 12668-2. 3.3.2.2 Procedure Place the probe on the calibration block a
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