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Shielding research in France

Conference:

Abstract

Shielding research as an independent subject in France dates from 1956. The importance of these studies has been reflected in the contribution which they have made to power reactor design and in the resultant savings in expenditure for civil engineering and machinery for the removal of mobile shields. The Reactor Shielding Research Division numbers approximately 60 persons and uses several experimental facilities. These include: NAIADE I, installed near the ZOE reactor and operating with a natural uranium slab 2 cm thick (an effective diameter of 60 cm is the one most commonly used); the TRITON pool-type reactor, mainly used in shielding studies, includes an active-water loop, by means of which the secondary shields required for light-water reactors can be studied; core, NEREIDE, which is situated near a 2 m x 2 m aluminium window enables a large neutron source to be placed in a compartment without water in which large-scale mock-ups can be mounted for the study, in particular, of neutron diffusion in large cavities, and of reactor shielding of greater thickness than that in NAIADE I; SAMES 600 keV accelerator is used for monoenergetic neutron studies. Instrumentation studies are an important part of the work, mainly in the measurement  More>>
Authors:
Publication Date:
Oct 01, 1964
Product Type:
Conference
Report Number:
STI/DOC-10/34
Resource Relation:
Conference: Panel on reactor shielding, Vienna (Austria), 9-13 Mar 1964; Other Information: 13 refs; PBD: Oct 1964; Related Information: In: Reactor shielding. Report of a panel, Technical reports seriesno. 34, 171 pages.
Subject:
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; BORON; CONCRETES; DESIGN; DIFFUSION; EL-1 REACTOR; EXPERIMENTAL DATA; GRAPHITE; IRON; NEUTRON ABSORBERS; NEUTRON FLUX; NEUTRON SPECTRA; REACTOR EXPERIMENTAL FACILITIES; SHIELDING; SHIELDING MATERIALS; SPECIFICATIONS; TRITON REACTOR; WATER COOLED REACTORS
OSTI ID:
20385775
Research Organizations:
International Atomic Energy Agency, Vienna (Austria)
Country of Origin:
IAEA
Language:
English
Other Identifying Numbers:
TRN: XA0302251065288
Submitting Site:
INIS
Size:
page(s) 28-31
Announcement Date:

Conference:

Citation Formats

Lafore, P. Shielding research in France. IAEA: N. p., 1964. Web.
Lafore, P. Shielding research in France. IAEA.
Lafore, P. 1964. "Shielding research in France." IAEA.
@misc{etde_20385775,
title = {Shielding research in France}
author = {Lafore, P}
abstractNote = {Shielding research as an independent subject in France dates from 1956. The importance of these studies has been reflected in the contribution which they have made to power reactor design and in the resultant savings in expenditure for civil engineering and machinery for the removal of mobile shields. The Reactor Shielding Research Division numbers approximately 60 persons and uses several experimental facilities. These include: NAIADE I, installed near the ZOE reactor and operating with a natural uranium slab 2 cm thick (an effective diameter of 60 cm is the one most commonly used); the TRITON pool-type reactor, mainly used in shielding studies, includes an active-water loop, by means of which the secondary shields required for light-water reactors can be studied; core, NEREIDE, which is situated near a 2 m x 2 m aluminium window enables a large neutron source to be placed in a compartment without water in which large-scale mock-ups can be mounted for the study, in particular, of neutron diffusion in large cavities, and of reactor shielding of greater thickness than that in NAIADE I; SAMES 600 keV accelerator is used for monoenergetic neutron studies. Instrumentation studies are an important part of the work, mainly in the measurement of fast neutrons and their spectra by activation detectors. Of late, attention has been directed towards the use of (n, n') (rhodium) reactions and of heavy detectors for low-flux measurements. The simultaneous use of a large number of detectors poses automation problems. With our installation we can count 16 detectors simultaneously. Neutron spectrum studies are conducted with nuclear emulsions and a lithium-6 semiconductor spectrometer. As to the materials used, the research carried out in France involves chiefly graphite, iron and concrete at various temperatures up to 800 deg C. Different compounds, borated and non-borated and of densities up to between 1 and 9 are under consideration. Problems connected with applications are also being studied.}
place = {IAEA}
year = {1964}
month = {Oct}
}