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Nuclear Materials Management in a Recovery Facility for Unirradiated Enriched Uranium; Gestion des Matieres Nucleaires dans une Installation de Recuperation d'Uranium Enrichi Non Irradie; Administrativno-khozyajstvennyj uchet yadernykh materialov na ustanovke po regeneratsii neobluchennogo obogashchennogo urana; Administracion de Materiales Nucleares en una Planta de Recuperacion para Uranio Enriquecido No Irradiado

Abstract

The United States Atomic Energy Commission's Y-12 Plant, in Oak Ridge, Tennessee, has been processing and recovering various forms of unirradiated enriched uranium for over twenty years. Today, the Y-12 recovery facilities consist of a semi-continuous train of unit operations including dissolution, combustion, evaporation, extraction, denitration, and hydrofluorination. The processing and storage equipment is of restricted geometry and has a combined capacity of several hundred kilograms of enriched Uranium per month. Feed to the recovery operation comes both from the Plant and from other USAEC installations in the United States. This feed has included, at one time or another, practically every type of unirradiated enriched uranium scrap. Physical control is maintained successfully by the following techniques: 1. Careful design of equipment to permit cleaning and sampling and to minimize material trapping; 2. Continuous monitoring of all discards and waste streams including sewer and stack effluents and contaminated discards; 3. Periodic physical inventories; 4. Careful sampling and analysis of all external feed streams and product streams; 5. Stringent control of the quality of analytical measurements and of sampling; 6. Assignment of the responsibility for material control to operating personnel rather than to accounting personnel; 7. Careful indoctrination of operating personnel. Information  More>>
Authors:
Jasny, G. R. [1] 
  1. Union Carbide Corporation, Oak Ridge, TN (United States)
Publication Date:
Feb 15, 1966
Product Type:
Conference
Report Number:
IAEA-SM-67/26
Resource Relation:
Conference: Symposium on Nuclear Materials Management, Vienna (Austria), 30 Aug - 3 Sep 1965; Other Information: 8 refs.; Related Information: In: Nuclear Materials Management. Proceedings of the Symposium on Nuclear Materials Management| 905 p.
Subject:
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; COMBUSTION; CONTROL; DATA PROCESSING; DENITRATION; ENRICHED URANIUM; EVAPORATION; EXTRACTION; INVENTORIES; MATERIAL BALANCE; MATERIALS RECOVERY; NUCLEAR MATERIALS MANAGEMENT; PERSONNEL; SCRAP; Y-12 PLANT
OSTI ID:
22127224
Research Organizations:
International Atomic Energy Agency, Vienna (Austria)
Country of Origin:
IAEA
Language:
English
Other Identifying Numbers:
Other: ISSN 0074-1884; TRN: XA13M2319082303
Submitting Site:
INIS
Size:
page(s) 189-201
Announcement Date:
Sep 12, 2013

Citation Formats

Jasny, G. R. Nuclear Materials Management in a Recovery Facility for Unirradiated Enriched Uranium; Gestion des Matieres Nucleaires dans une Installation de Recuperation d'Uranium Enrichi Non Irradie; Administrativno-khozyajstvennyj uchet yadernykh materialov na ustanovke po regeneratsii neobluchennogo obogashchennogo urana; Administracion de Materiales Nucleares en una Planta de Recuperacion para Uranio Enriquecido No Irradiado. IAEA: N. p., 1966. Web.
Jasny, G. R. Nuclear Materials Management in a Recovery Facility for Unirradiated Enriched Uranium; Gestion des Matieres Nucleaires dans une Installation de Recuperation d'Uranium Enrichi Non Irradie; Administrativno-khozyajstvennyj uchet yadernykh materialov na ustanovke po regeneratsii neobluchennogo obogashchennogo urana; Administracion de Materiales Nucleares en una Planta de Recuperacion para Uranio Enriquecido No Irradiado. IAEA.
Jasny, G. R. 1966. "Nuclear Materials Management in a Recovery Facility for Unirradiated Enriched Uranium; Gestion des Matieres Nucleaires dans une Installation de Recuperation d'Uranium Enrichi Non Irradie; Administrativno-khozyajstvennyj uchet yadernykh materialov na ustanovke po regeneratsii neobluchennogo obogashchennogo urana; Administracion de Materiales Nucleares en una Planta de Recuperacion para Uranio Enriquecido No Irradiado." IAEA.
@misc{etde_22127224,
title = {Nuclear Materials Management in a Recovery Facility for Unirradiated Enriched Uranium; Gestion des Matieres Nucleaires dans une Installation de Recuperation d'Uranium Enrichi Non Irradie; Administrativno-khozyajstvennyj uchet yadernykh materialov na ustanovke po regeneratsii neobluchennogo obogashchennogo urana; Administracion de Materiales Nucleares en una Planta de Recuperacion para Uranio Enriquecido No Irradiado}
author = {Jasny, G. R.}
abstractNote = {The United States Atomic Energy Commission's Y-12 Plant, in Oak Ridge, Tennessee, has been processing and recovering various forms of unirradiated enriched uranium for over twenty years. Today, the Y-12 recovery facilities consist of a semi-continuous train of unit operations including dissolution, combustion, evaporation, extraction, denitration, and hydrofluorination. The processing and storage equipment is of restricted geometry and has a combined capacity of several hundred kilograms of enriched Uranium per month. Feed to the recovery operation comes both from the Plant and from other USAEC installations in the United States. This feed has included, at one time or another, practically every type of unirradiated enriched uranium scrap. Physical control is maintained successfully by the following techniques: 1. Careful design of equipment to permit cleaning and sampling and to minimize material trapping; 2. Continuous monitoring of all discards and waste streams including sewer and stack effluents and contaminated discards; 3. Periodic physical inventories; 4. Careful sampling and analysis of all external feed streams and product streams; 5. Stringent control of the quality of analytical measurements and of sampling; 6. Assignment of the responsibility for material control to operating personnel rather than to accounting personnel; 7. Careful indoctrination of operating personnel. Information input to the nuclear material accounting system is achieved by means of a paper flow closely paralleling the physical flow of material, i.e. batch identity is maintained by means of individual batch cards and batch disposition is signalled by transfer of the batch card to the nuclear material accounting department. Most accounting operations are performed on electronic data-processing equipment. In addition to the records and calculations required for material balances, historical records of hold-up and concentration are kept to detect anomalies in input-output or inventory measurements. Statistical analysis is used extensively in connection with the control of measurements and to minimize the number of chemical analyses. However, the application of statistics to the evaluation of inventory discrepancies has not been successful. This paper will discuss the details of the material control techniques which have been listed and some of the problems associated with them. (author) [French] L'usine Y-12 exploitee par la Commission de l'energie atomique a Oak Ridge, Tennessee, procede depuis plus de 20 ans au traitement et a la recuperation d'uranium enrichi non irradie se presentant sous diverses formes. A l'heure actuelle, les installations de recuperation d'Y-12 executent une serie d'operations distinctes en chaine semi-continue, par exemple, dissolution, combustion, evaporation, extraction, denitrification et hydrofluoration. Les installations de traitement et de stockage ont une geometrie restreinte et leur capacite globale est de plusieurs centaines de kilogrammes d'uranium enrichi par mois. L'uranium entrant provient de l'usine elle-meme ainsi que d'autres installations de la Commission de l'energie atomique, situees aux Etats-Unis. Depuis sa creation, l'usine Y-12 a recu pratiquement toutes les sortes de dechets d'uranium enrichi non irradie. Le controle des operations est assure a l'aide des methodes suivantes: 1. Utilisation du materiel concu de maniere a faciliter le nettoyage et l'echantillonnage ainsi qu'a reduire au minimum le 'piegeage ' de matieres; 2. Controle permanent de tous les rebuts et dechets liquides, en particulier des effluents evacues a l'egout ou dans l'atmosphere et des dechets contamines; 3. Inventaires periodiques des stocks; 4. Echantillonnages et analyses de toutes les matieres entrantes et sortantes; 5. Controle strict de la qualite des mesures analytiques et de l'echantillonnage; 6. Attribution de la responsabilite du controle des matieres au personnel charge des operations plutot qu'a des comptables; 7. Formation poussee du personnel charge des operations. Le transfert des informations au service de comptabilite des matieres nucleaires est assure au moyen d'un systeme de fiches qui accompagnent les matieres: chaque lot est identifie par une fiche individuelle et la livraison du lot est signalee par transfert de la fiche au service de comptabilite des matieres nucleaires{sup .} La plupart des operations comptables sont executees sur des appareils electroniques de traitement de l'information; outre les dossiers et calculs necessaires pour l'etablissement des bilans matieres, on enregistre regulierement des donnees sur la retention et la concentration afin de faciliter la detection des anomalies dans les bilans entree/sortie ou dans les inventaires. L'analyse statistique est largement utilisee pour verifier les mesures et reduire au minimum le nombre d'analyses chimiques. Toutefois, l'application des statistiques n'a pas donne de bons resultats pour l'evaluation des erreurs d'inventaire. Le memoire etudie de maniere detaillee les methodes de controle des matieres indiquees plus haut et certains des problemesiqu'elles posent. (author) [Spanish] Desde hace mas de veinte anos, la planta Y-12 de la Comision de Energia Atomica, situada en Oak Ridge, Tennessee, viene tratando y recuperando diversas formas de uranio enriquecido no irradiado. El proceso de recuperacion consiste en un tren semicontinuo de operaciones unitarias: disolucion, combustion, evaporacion, extraccion, desnitrificacion e hidrofluoracion. El equipo de tratamiento y almacena - miento es de dimensiones restringidas para evitar la criticidad y tiene una capacidad combinada de varios centenares de kg de uranio enriquecido al mes. El material sometido a las operaciones de recuperacion proviene tanto de la planta como de otras instalaciones que la CEA posee en los Estados Unidos. Este material incluye practicamente todos los tipos de residuos de uranio enriquecido sin irradiar. El control fisico se ejerce satisfactoriamente mediante las tecnicas siguientes: 1. Diseno cuidadoso del equipo para facilitar la limpieza y el muestreo y reducir al minimo el atascamiento del material; 2. Control continuo de todas las corrientes de desechos y residuos, incluidos los efluentes li'quidos y gaseosos, y los desechos contaminados. 3. Inventarios fisicos periodicos; 4. Muestreo y analisis minuciosos de todos los materiales que entran en la planta y de todos los productos que salen de ella; 5. Control estricto de la calidad de las mediciones analiticas y del muestreo; 6. Asignacion de la responsabilidad del control de los materiales al personal tecnico y no a los servicios de contabilidad; 7. Adecuado adiestramiento del personal tecnico. El suministro de datos a los servicios de contabilidad se logra estableciendo una corriente de informacion practicamente paralela a la corriente fi'sica del material; la identidad de cada partida se mantiene mediante una serie de fichas individuales y la salida de una partida se indica pasando la ficha correspondiente al departamento de contabilidad de material nuclear. La mayor parte de las operaciones contables se llevan a cabo con un equipo electronico de sistematizacion de datos. Ademas de los registros y de los calculos necesarios para los balances de material, se llevan registros de carga y concentracion que facilitan la deteccion de anomalias en la relacion entrada-salida o en la evaluacion de las existencias. El analisis estadistico se emplea en gran medida para el control de las mediciones y para reducir al minimo el numero de los analisis quimicos. De todas formas, la aplicacion de la estadistica a la evaluacion de las discrepancias de inventario no ha dado buenos resultados. En la memoria se discuten todos estos detalles de la tecnica de control de materiales y algunos de los problemas que plantea la aplicacion de esta tecnica. (author) [Russian] Na ustanovke Y-12 Komissii po atomnoj jenergii v Okridzhe, Tennessi, uzhe bolee 20 let pererabatyvajutsja i izvlekajutsja razlichnye vidy neobluchennogo obogashhennogo urana. V nastojashhee vremja usta- novka Y-12 po regeneracii osnashhena polunepreryvnoj potochnoj liniej, vkljuchaja rastvorenie, szhiganie, vyparivanie, izvlechenie, denitraciju i gidroflorinaciju produkta. Oborudovanie po pererabotke i hraneniju imeet ogranichennye razmery i obladaet obshhej propusknoj sposob- nost'ju v neskol'ko sot kilogrammov obogashhennogo urana v mesjac. Snabzhenie dlja processov izvlechenija postupaet kak s samoj ustanovki, tak i iz drugih predprijatij Komissii po atom- noj jenergii v Soedinennyh Shtatah. V tot ili inoj moment jeto snabzhenie vkljuchaet lom ne- obluchennogo obogashhennogo urana prakticheski vseh vozmozhnyh vidov. Fizicheskij kontrol' uspeshno osushhestvljaetsja blagodarja sledujushhim faktoram: 1. Tshhatel'nost' konstruirovanija oborudovanija, chto obespechivaet vozmozhnost' chistki i vyborki prob i svodit k minimumu zahvat materialov. 2. Nepreryvnyj dozimetricheskij kontrol' vseh othodov i putej prohozhdenija othodov i jeffluentov kak cherez sistemu kanalizacii, tak i cherez vytjazhnye truby, a takzhe nad radioak- tivno zagrjaznennym musorom. 3. Periodicheskie fizicheskie proverki nalichnyh materialov. 4. Tshhatel'naja vyborka prob i analiz ih kak po vneshnim putjam snabzhenija matermalami, tak i po putjam prohozhdenija produkta. 5. Strogij kontrol' nad kachestvom analiza i vyborki prob. 6. Vozlozhenie otvetstvennosti za uchet materialov na operativnyj, a ne na uchetnyj personal. 7. Tshhatel'nyj instruktazh operativnogo personala. Informacija, postupajushhaja v sistemu ucheta jadernyh materialov, sobiraetsja pri pomoshhi sistemy kartochek, blizko soprovozhdajushhih fizicheskij put' prohozhdenija materialov; inache govorja, tozhdestvo kazhdoj partii sohranjaetsja pri pomoshhi sootvetstvujushhej kartochki, i otdel pouch e tu jadernogo materiala uvedomljaetsja ob udalenii partii posredstvom peredachi emu sootvetstvujushhej kartochki jetoj partii. Bol'shaja chast' uchetnyh operacij provoditsja na jelektronnom oborudovanii po obrabotke dannyh. V dopolnenie k uchetnym zapisjam i raschetam, neobhodimym dlja sostavlenija material'nyh balansov, vedutsja hronologicheskie zapisi skop- lenij i koncentracij dlja oblegchenija vyjavlenija anomalij v izmerenii postupajushhih i vyhodja- shhih materialov ili nalichnyh materialov na ustanovke. V s v ja z i s proverkoj izmerenij i dlja sokrashhenija chisla himicheskih analizov shiroko primenjaetsja statisticheskij analiz. Odnako primenenie statisticheskogo podhoda k vyjavle- niju rashozhdenij v nalichnom materiale uspehom ne uvenchalos'. Obsuzhdajutsja podrobnosti perechislennyh vyshe metodov uchet amaterialov, a takzhe nekotorye drugie smezhnye problemy. (author)}
place = {IAEA}
year = {1966}
month = {Feb}
}