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The Problems of Controlling Defects in the Materials Used for the First Czechoslovak Nuclear-Power Station; Problemes de Controle des Defauts dans les Materiaux Utilises a la Premiere Centrale Nucleaire de Tchecoslovaquie; Problemy defektoskopicheskogo kontrolya stroitel'nykh materialov reaktora pervoj chekhoslovatskoj atomnoj ehlektrostantsii; Problemas de Control de Defectos en los Materiales Utilizados en la Primera Central Nuclear de Checoslovaquia

Conference:

Abstract

The paper briefly describes the reactor vessel of the first Czechoslovak nuclear power station. In order to meet the stringent design and structural requirements involved in fabricating the reactor vessel, which consists of low-alloy, non-aging steel of considerable thickness (650 mm), it was necessary to devise a ''control'' method for non-destructive testing of the basic material and welded joints. The ultrasonic pulse method, using one probe, is used extensively in testing the quality of the basic material and welded joints. The paper describes the methods used for carrying out tests and interpreting the results during the investigation of the basic material, and the methods for testing the quality of molten-slag arcless electric welds, carbon-dioxide welds, and manual arc welds. An automatic flaw-detection apparatus made in Czechoslovakia is used to test flat forgings and rolled products. The apparatus consists of two parts: a travelling mechanism and a UID-A2 ultrasonic flaw-detector made in Czechoslovakia. The apparatus incorporates a number of new features. The effect of distance on the height of the defect signal pulse is compensated and the height remains constant. The effect of irregularity of the acoustic link is also compensated since the data-unit conveys pulses to the remote recording device.  More>>
Authors:
Radislav, Filipp [1] 
  1. Zavody Im.V.I. Lenina, Pl'zen, Czechoslovakia (Czech Republic)
Publication Date:
Sep 15, 1965
Product Type:
Conference
Report Number:
IAEA-SM-63/11
Resource Relation:
Conference: Symposium on Non-Destructive Testing in Nuclear Technology, Bucharest (Romania), 17-21 May 1965; Other Information: 3 refs., 4 figs.; Related Information: In: Non-Destructive Testing in Nuclear Technology Vol. I. Proceedings of a Symposium on Non-Destructive Testing in Nuclear Technology| 408 p.
Subject:
42 ENGINEERING; 22 GENERAL STUDIES OF NUCLEAR REACTORS; ACCURACY; BETATRONS; CZECH REPUBLIC; DEFECTS; EQUIPMENT; FORGING; MEV RANGE 10-100; NONDESTRUCTIVE TESTING; NUCLEAR POWER PLANTS; REACTOR VESSELS; SLOVAKIA; STEELS; WELDED JOINTS; X RADIATION
OSTI ID:
22121941
Research Organizations:
International Atomic Energy Agency, Vienna (Austria)
Country of Origin:
IAEA
Language:
Russian
Other Identifying Numbers:
Other: ISSN 0074-1884; TRN: XA13M2524078052
Submitting Site:
INIS
Size:
page(s) 139-149
Announcement Date:
Aug 27, 2013

Conference:

Citation Formats

Radislav, Filipp. The Problems of Controlling Defects in the Materials Used for the First Czechoslovak Nuclear-Power Station; Problemes de Controle des Defauts dans les Materiaux Utilises a la Premiere Centrale Nucleaire de Tchecoslovaquie; Problemy defektoskopicheskogo kontrolya stroitel'nykh materialov reaktora pervoj chekhoslovatskoj atomnoj ehlektrostantsii; Problemas de Control de Defectos en los Materiales Utilizados en la Primera Central Nuclear de Checoslovaquia. IAEA: N. p., 1965. Web.
Radislav, Filipp. The Problems of Controlling Defects in the Materials Used for the First Czechoslovak Nuclear-Power Station; Problemes de Controle des Defauts dans les Materiaux Utilises a la Premiere Centrale Nucleaire de Tchecoslovaquie; Problemy defektoskopicheskogo kontrolya stroitel'nykh materialov reaktora pervoj chekhoslovatskoj atomnoj ehlektrostantsii; Problemas de Control de Defectos en los Materiales Utilizados en la Primera Central Nuclear de Checoslovaquia. IAEA.
Radislav, Filipp. 1965. "The Problems of Controlling Defects in the Materials Used for the First Czechoslovak Nuclear-Power Station; Problemes de Controle des Defauts dans les Materiaux Utilises a la Premiere Centrale Nucleaire de Tchecoslovaquie; Problemy defektoskopicheskogo kontrolya stroitel'nykh materialov reaktora pervoj chekhoslovatskoj atomnoj ehlektrostantsii; Problemas de Control de Defectos en los Materiales Utilizados en la Primera Central Nuclear de Checoslovaquia." IAEA.
@misc{etde_22121941,
title = {The Problems of Controlling Defects in the Materials Used for the First Czechoslovak Nuclear-Power Station; Problemes de Controle des Defauts dans les Materiaux Utilises a la Premiere Centrale Nucleaire de Tchecoslovaquie; Problemy defektoskopicheskogo kontrolya stroitel'nykh materialov reaktora pervoj chekhoslovatskoj atomnoj ehlektrostantsii; Problemas de Control de Defectos en los Materiales Utilizados en la Primera Central Nuclear de Checoslovaquia}
author = {Radislav, Filipp}
abstractNote = {The paper briefly describes the reactor vessel of the first Czechoslovak nuclear power station. In order to meet the stringent design and structural requirements involved in fabricating the reactor vessel, which consists of low-alloy, non-aging steel of considerable thickness (650 mm), it was necessary to devise a ''control'' method for non-destructive testing of the basic material and welded joints. The ultrasonic pulse method, using one probe, is used extensively in testing the quality of the basic material and welded joints. The paper describes the methods used for carrying out tests and interpreting the results during the investigation of the basic material, and the methods for testing the quality of molten-slag arcless electric welds, carbon-dioxide welds, and manual arc welds. An automatic flaw-detection apparatus made in Czechoslovakia is used to test flat forgings and rolled products. The apparatus consists of two parts: a travelling mechanism and a UID-A2 ultrasonic flaw-detector made in Czechoslovakia. The apparatus incorporates a number of new features. The effect of distance on the height of the defect signal pulse is compensated and the height remains constant. The effect of irregularity of the acoustic link is also compensated since the data-unit conveys pulses to the remote recording device. An attenuator is used to determine the size of the flaw. An automatic apparatus is now being developed for testing on a vertical cylindrical surface. Assembly welds on circumferences must be tested at a high temperature. In the V.I. Lenin Plant at Pilsen a special data-unit has been developed for this purpose which makes it possible to carry out tests at elevated temperatures with a high degree of accuracy. Non-destructive tests of welded structures are also carried out using radiography. The testing of thin longitudinal seam welds and their roots at a high temperature is carried out with an X-ray unit with circular radiation characteristics, using special cassettes. In radiographing thick welds, betatrons of Czechoslovak manufacture are used. The paper describes the methods used for testing and the results obtained and compares the Czechoslovak 15-MeV betatron with the Siemens' betatron. (author) [French] Le memoire donne une description succincte de la cuve du reacteur de la premiere centrale nucleaire de Tchecoslovaquie. En raison des specifications rigoureuses auxquelles doivent repondre les methodes de construction et d'assemblage de la cuve du reacteur, en acier inoxydable faiblement allie de grande epaisseur (650 mm), il a fallu elaborer une methode de controle non destructif du materiau de base et des soudures, fondes sur l'emploi de ' temoins ' . Pour controler la qualite du materiau de base et des sourdures, on utilise essentiellement des ultrasons puises et une sonde. Le memoire decrit les methodes d'essais et l'evaluation des donnees au cours de l'examen du materiau de base, ainsi que le procede qui permet de verifier la qualite des soudures electriques a scorie, des soudures en atmosphere de gaz carbonique et des soudures a l'arc faites a la main. Le controle des plaques forgees et laminees se fait au moyen d'un dispositif automatique de defectoscopie qui a ete mis au point en Tchecoslovaquie. Ce dispositif se compose de deux parties: un mecanisme mobile et un detecteur a ultrasons du type U1D-A2, de fabrication tchecoslovaque. Il comprend plusieurs elements inedits. On a compense l'effet de la distance sur l'ampleur du signal declenche par un defaut de maniere que cette ampleur reste constante. On a compense aussi l'effet du aux irregularites de la liaison acoustique, les impulsions etant communiquees a un dispositif d'enregistrement a distance. L'importance du defaut est evalue a l'aide d'unattenuateur. On metau point un dispositif automatique pour controler une surface cylindrique verticale. Les soudures d'assemblage circulaire doivent etre verifiees a une temperature elevee. Dans les usines V. I. Lenine de Pilsen, on a elabore a cet effet un instrument special grace auquel on peut faire des controles a haute temperature avec une grande precision. Le controle non destructif des pieces soudees peut se faire egalement par radioscopie. La verification de petites epaisseurs et celle, a haute temperature, de la base d'une soudure longitudinale sont realisees a l'aide des rayons X provenant d'un appareil a emanation circulaire, et de cassettes speciales. Pour la radioscopie des pieces soudees de grande epaisseur, on a recours a un betratron de fabrication tchecoslovaque. L'auteur decrit les methodes d'essai, indique les resultats obtenus et fait une etude comparative entre le betatron tchecoslovaque de 15 MeV et celui de Siemens. (author) [Spanish] En la memoria se describe brevemente el cuerpo del reactor de la primera central nuclear de Checoslovaquia. Las rigurosas normas seguidas en su construccion (acero inoxidable de baja aleacion, de 650 mm de espesor) exigieron elaborar un metodo de 'testigos'para proceder al control no destructivo del material basico y de las soldaduras. Para el control de calidad del material basico y de las soldaduras se recurrio en gran medida al metodo de impulsos ultrasonicos, utilizando una sonda. En la memoria se describe la tecnica empleada y se evaluan los datos obtenidos; tambien se expone el metodo de control de calidad de las piezas soldadas electricamente con formacion de escorias y de las soldadas en atmosfera de anhidrido carbonico, asf como las soldadas a mano mediante arco electrico. La integridad de las placas forjadas o laminadas se controla automaticamente en una instalacion de defectoscopia de fabricacion checoslovaca, qoe consta de dos partes: un mecanismo movil y un defectoscopio de ultrasonidos U1D-A2. La instalacion se distingue por poseer varios elementos nuevos. La influencia ejercida por la distancia sobre la amplitud de la sen al originada por el defecto se compensa de manera que la altura de la senal permanece constante. Igualmente, se compensa el efecto de la irregularidad del acoplamiento acustico; el dispositivo envia impulsos al dispositivo del registro a distancia. Las dimensiones del defecto se determinan con ayuda de un atenuador. En la actualidad, se esta montando una instalacion automatica que permitira proceder al control de la superficie de un cilindro vertical. En el caso de las soldaduras, es necesario efectuar el control en la parte exterior a temperatura elevada. Con esa finalidad, en la fabrica 'V.I. Lenin' d e Pilsen se ha construido un dispositivo especial que permite procecer a controles de gran exactitud a altas temperaturas. El control no destructivo de los elementos soldados se efectua igualmente por rayos X. La medicion de pequenosi espesores y del metal base de una soldadura se hace mediante rayos X caracteristicos, utilizando chasis especiales. En la radioscopia de piezas soldadas de gran espesor se recurre a un betatron de procedencia checoslovaca. En la memoria se describe la tecnica de los ensayos, los resultados obtenidos y se comparan las caracteristicas del mencionado betatron de 15 MeV con otro construido por la firma Siemens. (author) [Russian] Daetsja kratkoe opisanie korpusa reaktora pervoj chehoslovackoj atomnoj jelektrostancii. Vysokie tre- bovanija k konstrukcii i tehnologii izgotovlenija korpusa reaktora, vypolnennogo iz nizko- legirovannoj nestarejushhej stali (tolshhina stenok 650 mm), priveli k neobhodimosti razra- botki metoda 'svidetelej' dlja kontrolja prochnosti konstrukcii bez razrushenija osnovnogo materiala i svarnyh soedinenij. Dlja kontrolja kachestva osnovnogo materiala i svarnyh soedinenij v bol'shoj mere is- pol'zuetsja ul'trazvukovoj impul'snyj metod s primeneniem odnogo zonda. Daetsja opisanie metodiki ispytanij i ocenki pokazanij vo vremja issledovanija osnovnogo materiala, a takzhe metodiki ispytanija kachestva jelektroshlakovyh svarnyh soedinenij, svarnyh soedinenij, provedennyh v atmosfere uglekislogo gaza , i ruchnyh dugovyh soedinenij. Kontrol' cel'nosti ploskih pakovok i prokata poizvodits ja avtomaticheskoj defekto- skopicheskoj ustanovkoj, razrabotannoj v ChSSR. Ustanovka sostoit iz podvizhnogo meha- nizma i ul'trazvukovogo defektoskopa UID-A2, razrabotannogo v ChSSR. Ustanovka otli- chaetsja rjadom novyh jelementov. Vlijanie rasstojanija na vysotu vspleska signala defekta kompensirovano, i vysota ostaetsja postojannoj. Takzhe kompensirovano vlijanie neravno- mernosti akusticheskoj svjazi, prichem datchik dzet impul'sy na distancionnoe registriruju- shhee ustrojstvo. Razmer defekta ocenivaetsja pri pomoshhi atenuatora. V nastojashhee vremja razrabatyvaetsja avtomaticheskoe ustrojstvo , pozvoljajushhee kontrolirovat' vertikal'nye cilindricheskie poverhnosti. Montazhnye svarnye shvy po okruzhnosti nuzhno kontrolirovat' pri povyshennoj tempera- ture. Nazavodah im. V.I. Lenina v g . Pl'zen' dlja jetih celej byl razrabotan special'nyj datchik, pozvoljajushhij osushhestvljat' kontrol' s bol'shoj tochnost'ju pri povyshennoj tempera- ture . Nedestruktivnyj kontrol' svarnyh konstrukcij provoditsja takzhe prosvechivaniem.Ne- bol'shie tolshhiny i korni prodol'nogo svarnogo shva pri povyshennoj temperature kontroliru- jutsja rentgenom s krugovoj harakteristikoj izluchenija pri ispol'zovanii osobyh kasset. Pri prosvechivanii bol'shih tolshhin svarnyh soedinenij ispol'zujutsja betatrony chehoslovackogo proizvodstva. Daetsja opisanie metodiki ispytanij i poluchennyh rezul'tatov. Betatron chehoslovackogo proizvodstva 15 Mjev sravnivaetsja s betatronom firmy Simens. (author)}
place = {IAEA}
year = {1965}
month = {Sep}
}