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The Role of Non-Destructive Testing in the Los Alamos Reactor Programme; Role des Essais Non Destructifs dans le Programme de Reacteurs de los Alamos; Rol' nedestruktivnykh ispytanij materialov v Los-Alamosskoj reaktornoj programme; Papel de los Metodos de Ensayo No Destructivo en el Programa de Reactores de Los Alamos

Conference:

Abstract

The Los Alamos scientific Laboratory, operated Dy me University of california for me united states Atomic Energy Commission, has been active for more than twenty years in developing, designing, and building nuclear reactors of four general types: research, power, rocket propulsion, and critical assembly. The Non-destructive Testing Group serves practically all the activities and projects of the Laboratory; this paper describes some of the unique non-destructive testing techniques and applications developed for and used in the reactor programme. LAPRE (Los Alamos Power Reactor Experiment) was based on the use of a uranium phosphate solution at high temperature. This solution is very corrosive, and all parts in contact with it were clad with gold. Special radiographic techniques were used to inspect the gold during the process of producing rolled sheet from cast ingot. The welded seams were similarly inspected. An electrode-potential inspection method was developed for checking the gold surfaces for imbedded impurities. The fundamental concept of LAMPRE (Los Alamos Molten Plutonium Reactor Experiment) is the use of liquid - rather than solid - plutonium metal as fuel. Tantalum capsules contained the fuel. Novel nondestructive testing methods were used to check the soundness of base metal and welds during the production  More>>
Authors:
Tenney, G. H. [1] 
  1. University of California, Los Alamos Scientific Laboratory, Los Alamos, NM (United States)
Publication Date:
Oct 15, 1965
Product Type:
Conference
Report Number:
IAEA-SM-63/26
Resource Relation:
Conference: Symposium on Non-Destructive Testing in Nuclear Technology, Bucharest (Romania), 17-21 May 1965; Other Information: 7 refs., 9 figs.; Related Information: In: Non-Destructive Testing in Nuclear Technology Vol. II. Proceedings of a Symposium on Non-Destructive Testing in Nuclear Technology| 462 p.
Subject:
42 ENGINEERING; 22 GENERAL STUDIES OF NUCLEAR REACTORS; CAPSULES; GAMMA RADIATION; GOLD; GRAPHITE; INSPECTION; LAMPRE-1 REACTOR; LANL; NONDESTRUCTIVE TESTING; NUCLEAR FUELS; PLUTONIUM; PYROLYTIC CARBON; SCINTILLATION COUNTERS; TANTALUM; TEMPERATURE DEPENDENCE; URANIUM CARBIDES; URANIUM PHOSPHATES; WELDED JOINTS; ZERO POWER REACTORS
OSTI ID:
22127292
Research Organizations:
International Atomic Energy Agency, Vienna (Austria)
Country of Origin:
IAEA
Language:
English
Other Identifying Numbers:
Other: ISSN 0074-1884; TRN: XA13M2545082371
Submitting Site:
INIS
Size:
page(s) 109-123
Announcement Date:
Sep 12, 2013

Conference:

Citation Formats

Tenney, G. H. The Role of Non-Destructive Testing in the Los Alamos Reactor Programme; Role des Essais Non Destructifs dans le Programme de Reacteurs de los Alamos; Rol' nedestruktivnykh ispytanij materialov v Los-Alamosskoj reaktornoj programme; Papel de los Metodos de Ensayo No Destructivo en el Programa de Reactores de Los Alamos. IAEA: N. p., 1965. Web.
Tenney, G. H. The Role of Non-Destructive Testing in the Los Alamos Reactor Programme; Role des Essais Non Destructifs dans le Programme de Reacteurs de los Alamos; Rol' nedestruktivnykh ispytanij materialov v Los-Alamosskoj reaktornoj programme; Papel de los Metodos de Ensayo No Destructivo en el Programa de Reactores de Los Alamos. IAEA.
Tenney, G. H. 1965. "The Role of Non-Destructive Testing in the Los Alamos Reactor Programme; Role des Essais Non Destructifs dans le Programme de Reacteurs de los Alamos; Rol' nedestruktivnykh ispytanij materialov v Los-Alamosskoj reaktornoj programme; Papel de los Metodos de Ensayo No Destructivo en el Programa de Reactores de Los Alamos." IAEA.
@misc{etde_22127292,
title = {The Role of Non-Destructive Testing in the Los Alamos Reactor Programme; Role des Essais Non Destructifs dans le Programme de Reacteurs de los Alamos; Rol' nedestruktivnykh ispytanij materialov v Los-Alamosskoj reaktornoj programme; Papel de los Metodos de Ensayo No Destructivo en el Programa de Reactores de Los Alamos}
author = {Tenney, G. H.}
abstractNote = {The Los Alamos scientific Laboratory, operated Dy me University of california for me united states Atomic Energy Commission, has been active for more than twenty years in developing, designing, and building nuclear reactors of four general types: research, power, rocket propulsion, and critical assembly. The Non-destructive Testing Group serves practically all the activities and projects of the Laboratory; this paper describes some of the unique non-destructive testing techniques and applications developed for and used in the reactor programme. LAPRE (Los Alamos Power Reactor Experiment) was based on the use of a uranium phosphate solution at high temperature. This solution is very corrosive, and all parts in contact with it were clad with gold. Special radiographic techniques were used to inspect the gold during the process of producing rolled sheet from cast ingot. The welded seams were similarly inspected. An electrode-potential inspection method was developed for checking the gold surfaces for imbedded impurities. The fundamental concept of LAMPRE (Los Alamos Molten Plutonium Reactor Experiment) is the use of liquid - rather than solid - plutonium metal as fuel. Tantalum capsules contained the fuel. Novel nondestructive testing methods were used to check the soundness of base metal and welds during the production of the capsules, and to study the plutonium-loaded capsules before, during, and after melt-freeze tests. A molten plutonium pump experiment was followed with radiographic techniques, including a gamma-ray closed television circuit. For UHTREX (Ultra High Temperature Reactor Experiment), now under construction, micro radiographic and electron microscopic studies have been made on 150-{mu}m-diam. pyrocarbon-coated uranium carbide beads, to evaluate uranium migration as a function of temperature. The amount, and uniformity, of the uranium loading in the UHTREX graphite elements are determined with specially designed scintillation counters. About 90% of the work on this subject has not been previously published. (author) [French] Le Laboratoire scientifique de Los Alamos, exploite par l'Universite de Californie pour la Commission de l'energie atomique des Etats-Unis, s'occupe depuis plus de vingt ans de l'etude, de la mise au point et de la construction de quatre types de reacteurs nucleaires: reacteurs de recherche, reacteurs de puissance, reacteurs pour la propulsion des fusees et assemblages critiques. Le Groupe des essais non destructifs collabore a presque tous les projets et travaux du Laboratoire. Le memoire decrit quelques-unes des methodes inedites d'essais non destructifs qui y ont ete mises au point et sont appliquees dans le cadre du programme de reacteurs. Le reacteur de puissance experimental LAMPRE est fonde sur l'utilisation d'une solution de phosphate d'uranium a haute temperature. Cette solution est tres corrosive et toutes les parties en contact avec elle ont un revetement en or. On a eu recours a des techniques radiographiques speciales pour controler l'or pendant le processus de laminage d'un lingot coule. On a procede de la meme maniere a l'inspection des soudures. Une methode d'inspection fondee sur les variations de potentiel aux electrodes a ete mise au point, pour la detection d'impuretes sur les surfaces d'or. Le reacteur experimental au plutonium fondu LAPRE est fonde sur l'utilisation de plutonium metallique, sous forme liquide plutot que sous forme solide, comme combustible. Le combustible est contenu dans des capsules en tantale. On a eu recours a des methodes non destructives pour verifier le bon etat du metal de base et des soudures pendant la fabrication des capsules, ainsi que pour controler les capsules remplies de plutonium avant, pendant et apres les essais de fusion et solidification. L'essai d'une pompe a plutonium fondu a ete suivi par des methodes radiographiques, en utilisant notamment un circuit ferme de television a rayons gamma. Pour le reacteur experimental a tres haute temperature UHTREX, actuellement en construction, on a etudie par microiadiogiaphie et au moyen de microscopes electroniques des grains de carbure d'uranium enrobes de carbone pyrolytique, d'un diametre de 150 {mu}m, pour evaluer la translocation de l'uranium en fonction de la temperature. On determine la quantite et l'uniformite de la charge d'uranium dans les elements au graphite d'UHTREX au moyen de compteurs a scintillation specialement concus. Environ 90% des travaux effectues a ce sujet n'ont encore fait l'objet d'aucune publication. (author) [Spanish] El Laboratorio Cientifico de Los Alamos, explotado por la Universidad de California por encargo de la Comision de Energia Atomica de los Estados Unidos, viene ocupandose desde hace mas de veinte afios del proyecto, diseno y construccion de reactores nucleares de cuatro tipos generales; a saber, de investigacion, de potencia, de propulsion espacial y para conjuntos criticos. El llamado Grupo de ensayos no destructivos colabora practicamente en todas las actividades y proyectos del laboratorio. En la presente memoria se exponen algunos de los metodos de ensayo no destructivo y sus aplicaciones, establecidos para uso en el programa de reactores. El programa LAPRE (Los Alamos Power Reactor Experiment) se basa en el empleo de una solucion de fosfato de uranio a alta temperatura. La solucion es muy corrosiva y todas las piezas que entren en contacto con ella deben ir revestidas de oro. Durante el proceso de produccion de chapa de oro laminada a partir de lingotes, se han utilizado procedimientos radiograficos especiales para inspeccionar el metal. Las juntas soldadas se examinaron del mismo modo, y ademas se establecio un metodo para comprobar la presencia de impurezas incrustadas en la superficie de la chapa de oro. El concepto fundamental en que se basa el programa LAMPRE (Los Alamos Molten Plutonium Reactor Experiment) es la utilizacion como combustible de plutonio metalico liquido en vez de solido. El combustible esta encerrado en capsulas de tantalo, y durante la fabricacion de estas se aplicaron nuevos metodos de ensayo no destructivo para verificar la integridad del metal basico y de las soldaduras. Tambien se aplicaron esos metodos durante los ensayos de fusion y enfriado y despues de estos. En un experimento realizado con una bomba mecanica de plutonio fundido, se utilizaron procedimientos radiograficos, entre ellos un circuito de television industrial de rayos gamma. Para el programa UHTREX (Ultra High Temperature Reactor Experiment) actualmente en curso de ejecucion, se efectuaron estudios microrradiograficos y al microscopio electronico de las perlas de carburo de uranio revestidas de carbono pirolftico, de 150 {mu}m de diametro, con el fin de evaluar la migracion del uranio en funcion de la temperatura. La masa y la uniformidad de la carga de uranio en los elementos de grafito del programa UHTREX se .determinan mediante contadores de centelleo especiales. (author) [Russian] Los-Alamosskaja nauchnaja laboratorija, rukovodstvo kotoroj osushhestvljaet Kalifornijskij universitet dlja Komissii po atomnoj jenergii SShA, v techenie bolee dvadcati let aktivno zanimaetsja razrabotkoj, proektirovaniem i stroitel'stvom jadernyh reaktorov chetyreh obshhih tipov: issledovatel'skih, jenergeticheskih, reaktorov dlja raketnyh dvigatelej i kriticheskih sborok. Gruppa nedestruktivnyh ispytanij materialov okazyvaet uslugi na praktike vsem vidam dejatel'nosti i proektam laboratorii; v jetom doklade opisyvajutsja nekotorye iz unikal'nyh metodov ispytanij bez razrushenija i priemov, razrabotannyh dlja reaktornoj programmy i ispol'zuemyh v nej. LAJeRJe (Los-Alamosskij jenergeticheskij reaktornyj jeksperiment) osnovan na ispol'zovanii rastvora fosfata urana pri vysokoj temperature. Jetot rastvor javljaetsja ochen' korrozijnym, pojetomu vse chasti, nahodjashhiesja v kontakte s nim. byli pokryty zolotom. Special'nye radiograficheskie metody pozvoljali kontrolirovat' zoloto vo vremja processa proizvodstva prokatannogo lista iz slitka. Osushhestvljalsja takzhe kontrol' za svarnymi shvami. Byl razrabotan metod proverki potenciala jelektroda dlja kontrolja zolotyh poverhnostej dlja obnaruzhenija soderzhashhihsja zagrjaznenij. Osnovnaja koncepcija LARJeRP (Los-Alamosskij reaktornyj jeksperiment s rasplavlennym plutoniem) zakljuchaetsja v ispol'zovanii v kachestve topliva skoree zhidkogo, chem tverdogo metallicheskogo plutonija. Tantalovye kapsuly soderzhali toplivo. Byli ispol'zovany novye metody kontrolja bez razrushenija dlja proverki prochnosti osnovnogo materiala i svarok vo vremja proizvodstva kapsul, a takzhe dlja izuchenija kapsul, zapolnennyh plutoniem do, vo vremja i posle kontrolja metodom ohlazhdennoj plavki. Za jeksperimentom po perekachke rasplavlennogo plutonija nabljudali s pomoshh'ju radiograficheskih metodov, vkljuchaja gamma- luchi, svjazannye s konturom televedenija. Dlja RJeUVT (Reaktornyj jeksperiment pri ul'tra-vysokojtemperature), kotoryj v nastojashhee vremja nahoditsja v stadii stroitel'stva, byli provedeny mikroradiograficheskie i jelektronno-mikroskopicheskie issledovanija na sharikah diametrom 150 mikron iz karbida urana, pokrytyh pirouglerodom, dlja ocenki migracii urana kak funkcija temperatury. Kolichestvo i odnorodnosti uranovoj zagruzki v grafitovyh jelementah RJeUVT opredeljajutsja s pomoshh'ju special'no skonstruirovannyh scintilljacionnyh schetchikov. Primerno 90% raboty po jetoj teme ranee ne bylo opublikovano. (author)}
place = {IAEA}
year = {1965}
month = {Oct}
}