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Criticality experiments with annular cylinders containing plutonium solutions; Experiences de criticite sur des cylindres annulaires contenant des solutions de plutonium

Abstract

The criticality station of Dijon involves three cells, shielded by concrete walls of 1.46 meter thickness. Those cells are designed to contain the criticality experiment apparatus. The engineering building is also involving: one chemical laboratory where plutonium solutions are prepared, one analysis laboratory, several activated solutions storages, several control rooms, One cell contains the B system, which is designed to study: annular cylindrical geometries, slab of 10 cm thickness, interaction between annular cylinders. This report includes the first results given by experiments on annular cylinders defined by their own geometry (outer and inner diameter of ring containing plutonium solutions). Those results have been plotted in curves, for several concentrations and for different reflection conditions (outer or inner light water reflector, cadmium screen), H{sub c} and M{sub c} = f (c) (where H{sub c} is the critical height of solution, M{sub c} is the critical mass, c is the plutonium concentration: 42,3 g/l<c <104,l g/l) and regard: - several annular cylinders 500 x 300 -- an insulated cylinder --interaction between two annular cylinders. In this last case, the curves have been plotted for three concentrations in plutonium and give H{sub c} and M{sub c} versus the distance between the two solutions.  More>>
Authors:
Molbert, M; Sauve, A; Houelle, M; Deilgat, E [1] 
  1. Commissariat a l'Energie Atomique, Saclay (France). Centre d'Etudes Nucleaires
Publication Date:
Jul 01, 1964
Product Type:
Technical Report
Report Number:
CEA-R-2495
Resource Relation:
Other Information: 2 refs
Subject:
42 ENGINEERING; ANNULAR SPACE; CONCENTRATION RATIO; CRITICAL MASS; CRITICALITY; CYLINDRICAL CONFIGURATION; FUEL SOLUTIONS; INTERACTION RANGE; NEUTRON REFLECTORS; PLUTONIUM; SHIELDING; STORAGE
OSTI ID:
20771739
Research Organizations:
CEA Saclay, 91 - Gif-sur-Yvette (France)
Country of Origin:
France
Language:
French
Other Identifying Numbers:
TRN: FR06R2495077168
Availability:
Available from INIS in electronic form
Submitting Site:
FRN
Size:
69 pages
Announcement Date:
Oct 16, 2006

Citation Formats

Molbert, M, Sauve, A, Houelle, M, and Deilgat, E. Criticality experiments with annular cylinders containing plutonium solutions; Experiences de criticite sur des cylindres annulaires contenant des solutions de plutonium. France: N. p., 1964. Web.
Molbert, M, Sauve, A, Houelle, M, & Deilgat, E. Criticality experiments with annular cylinders containing plutonium solutions; Experiences de criticite sur des cylindres annulaires contenant des solutions de plutonium. France.
Molbert, M, Sauve, A, Houelle, M, and Deilgat, E. 1964. "Criticality experiments with annular cylinders containing plutonium solutions; Experiences de criticite sur des cylindres annulaires contenant des solutions de plutonium." France.
@misc{etde_20771739,
title = {Criticality experiments with annular cylinders containing plutonium solutions; Experiences de criticite sur des cylindres annulaires contenant des solutions de plutonium}
author = {Molbert, M, Sauve, A, Houelle, M, and Deilgat, E}
abstractNote = {The criticality station of Dijon involves three cells, shielded by concrete walls of 1.46 meter thickness. Those cells are designed to contain the criticality experiment apparatus. The engineering building is also involving: one chemical laboratory where plutonium solutions are prepared, one analysis laboratory, several activated solutions storages, several control rooms, One cell contains the B system, which is designed to study: annular cylindrical geometries, slab of 10 cm thickness, interaction between annular cylinders. This report includes the first results given by experiments on annular cylinders defined by their own geometry (outer and inner diameter of ring containing plutonium solutions). Those results have been plotted in curves, for several concentrations and for different reflection conditions (outer or inner light water reflector, cadmium screen), H{sub c} and M{sub c} = f (c) (where H{sub c} is the critical height of solution, M{sub c} is the critical mass, c is the plutonium concentration: 42,3 g/l<c <104,l g/l) and regard: - several annular cylinders 500 x 300 -- an insulated cylinder --interaction between two annular cylinders. In this last case, the curves have been plotted for three concentrations in plutonium and give H{sub c} and M{sub c} versus the distance between the two solutions. - an insulated annular cylinder 500 x 200: incomplete results are published the experiments on this cylinder being unfinished to the date of this present report publication. On this miscellaneous results, we have following informations know: - Screen effect of light water in central hole. Strengthened effect by cadmium foil on the inside wall. - Normalized interaction curves ( {alpha}*H{sub c}/H{sub c{infinity}} ) versus the distance between the two vessels, where H{sub c{infinity}} critical height of an insulated cylinder, shows that: 1) In light water, two cylinders set aside from 15 cm, can be considers like separated. 2) For some configurations, {alpha} vary slightly with the concentration. On other part, a good agreement was been noticed between those results and the calculations (CEA Report 2488). (authors) [French] La Station de criticite de Dijon dispose de trois cellules, protegees par des murs de beton de 1 m 46 d'epaisseur, servant a abriter les appareillages destines aux experiences de criticite. Le batiment comprend egalement: un atelier de preparation des solutions de plutonium, un laboratoire d'analyses, des stockages de solutions actives, des salles de controle accolees aux cellules. L'une des cellules est occupee par l'appareillage B a l'aide duquel il est prevu d'etudier: des cylindres annulaires, une plaque de 100 mm d'epaisseur et l'interaction de plusieurs recipients cylindriques. Le present rapport groupe les premiers resultats obtenus sur des cylindres annulaires definis par leur geometrie (diametre exterieur et diametre interieur de l'anneau contenant la solution de plutonium). Ces resultats ont ete rassembles sous forme de courbes H{sub c} et M{sub c} = f (c) (ou H{sub c} = hauteur critique, M{sub c} = masse critique et c = concentration en plutonium) pour plusieurs valeurs de la concentration (42,3 g/l < c < 104,1 g/l) et pour diverses conditions de reflexion (reflecteur d'eau interieur et exterieur, ecran de cadmium) et concernent: - des cylindres de 500 x 300; -- cylindre isole -- interaction entre deux cylindres - Dans ce cas particulier les courbes ont ete tracees pour trois concentrations en plutonium, elles donnent H{sub c} et M{sub c} en fonction de la distance entre recipients. - un cylindre de 500 x 200 isole: les resultats publies sont incomplets, les experiences n'etant pas terminees a la date du present rapport. De ces divers resultats ont ete tires les renseignements suivants: - effet d'ecran de l'eau dans la cavite centrale superieure a l'effet de reflexion. Cet effet est accru par une feuille de cadmium plaquee sur la paroi. - des courbes d'interaction 'normalisees' {alpha}*H{sub c}/H{sub c{infinity}} en fonction de d ou H{sub c{infinity}} est la hauteur critique du cylindre isole, montrent que: 1) dans l'eau, deux cylindres distants de plus de 15 cm peuvent etre consideres comme separes 2) pour certaines configurations, {alpha} varie peu avec la concentration. D'autre part une bonne concordance a ete observee entre ces resultats et les calculs (Rapport CEA 2488). (auteurs)}
place = {France}
year = {1964}
month = {Jul}
}