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A study of some radioprotection apparatuses used in the case of pool reactors; Etude de quelques dispositifs de radioprotection en service aupres des piles piscines

Abstract

Various problems of radioprotection concerning swimming-pool reactors in Grenoble have led us to study adequate solutions: a) The automatic verification of the staff-radioactivity when coming out of Melusine or Siloe has been realized thanks to a {beta}{gamma} gate which is insensitive to the ambient background in the reactor-hall; b) The automatic verification of the contamination of the shoes of the agents working in these reactors has been realized with a dedicated device; c) The necessity to measure precisely {gamma} doses with the help of an autonomous apparatus has led to the making of a plastic-scintillator {gamma} dosimeter; d) The obligation to forbid the opening of doors in some places where there might be a great intensity of radiation, has led us to make doors open according to the intensity of radiation inside the rooms; e) The releases of radioactive iodine have been measured with activated charcoal cartridges that surround a scintillator connected with a unique channel selector; f) Finally the control of reactor safety rod fall in case of a radioactive accident has been secured by a chain whose detector is a chamber immersed in the swimming-pool, which offers, in the particular case of the hot thickness swimming-pool reactor a  More>>
Authors:
Robien, E de; Choudens, H de; Delpuech, J [1] 
  1. Commissariat a l'Energie Atomique, Grenoble (France). Centre d'Etudes Nucleaires
Publication Date:
Jul 01, 1965
Product Type:
Technical Report
Report Number:
CEA-R-2864
Resource Relation:
Other Information: 7 refs
Subject:
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; BETA DOSIMETRY; CONTAMINATION; GAMMA DOSIMETRY; IODINE; POOL TYPE REACTORS; RADIATION MONITORING; RADIATION MONITORS; RADIATION PROTECTION; SAFETY ENGINEERING
OSTI ID:
20723404
Research Organizations:
CEA Grenoble, 38 (France)
Country of Origin:
France
Language:
French
Other Identifying Numbers:
TRN: FR05R2864035904
Availability:
Available from INIS in electronic form
Submitting Site:
FRN
Size:
23 pages
Announcement Date:
May 15, 2006

Citation Formats

Robien, E de, Choudens, H de, and Delpuech, J. A study of some radioprotection apparatuses used in the case of pool reactors; Etude de quelques dispositifs de radioprotection en service aupres des piles piscines. France: N. p., 1965. Web.
Robien, E de, Choudens, H de, & Delpuech, J. A study of some radioprotection apparatuses used in the case of pool reactors; Etude de quelques dispositifs de radioprotection en service aupres des piles piscines. France.
Robien, E de, Choudens, H de, and Delpuech, J. 1965. "A study of some radioprotection apparatuses used in the case of pool reactors; Etude de quelques dispositifs de radioprotection en service aupres des piles piscines." France.
@misc{etde_20723404,
title = {A study of some radioprotection apparatuses used in the case of pool reactors; Etude de quelques dispositifs de radioprotection en service aupres des piles piscines}
author = {Robien, E de, Choudens, H de, and Delpuech, J}
abstractNote = {Various problems of radioprotection concerning swimming-pool reactors in Grenoble have led us to study adequate solutions: a) The automatic verification of the staff-radioactivity when coming out of Melusine or Siloe has been realized thanks to a {beta}{gamma} gate which is insensitive to the ambient background in the reactor-hall; b) The automatic verification of the contamination of the shoes of the agents working in these reactors has been realized with a dedicated device; c) The necessity to measure precisely {gamma} doses with the help of an autonomous apparatus has led to the making of a plastic-scintillator {gamma} dosimeter; d) The obligation to forbid the opening of doors in some places where there might be a great intensity of radiation, has led us to make doors open according to the intensity of radiation inside the rooms; e) The releases of radioactive iodine have been measured with activated charcoal cartridges that surround a scintillator connected with a unique channel selector; f) Finally the control of reactor safety rod fall in case of a radioactive accident has been secured by a chain whose detector is a chamber immersed in the swimming-pool, which offers, in the particular case of the hot thickness swimming-pool reactor a double advantage: first it enables us to regulate the upper hot water layer, second to get free of transitory radiations which appear in the reactor hall as the experimental apparatuses are taken out from the core. (authors) [French] Differents problemes de radioprotection se posant aupres des piles piscines de Grenoble, ils ont necessite l'etude de solutions particulieres: a) le controle automatique de la radioactivite du personnel sortant de Melusine ou de Siloe a ete realise a l'aide d'un portique {beta}{gamma} insensible au bruit de fond ambiant du hall des piles; b) le controle automatique de la contamination des souliers des agents travaillant dans ces piles a ete realise par une passerelle pieds {beta}{gamma}; c) la necessite de mesurer avec une bonne precision des doses {gamma} a l'aide d'un appareil autonome a conduit a la realisation d'un dosiinetre {gamma} a scintillateur plastique; d) l'obligation de condamner l'ouverture des portes de certains locaux ou il risque d'y avoir une intensite de rayonnement forte a conduit a realiser un asservissement de l'ouverture de ces portes a l'intensite de rayonnement a l'interieur des locaux; e) les degagements d'iode radioactif ont ete mesures a l'aide de cartouches de charbon actif entourant un scintillateur relie a un monocanal; f) enfin, la commande de chute des barres des piles, en cas d'accident radioactif, a ete assuree par une chaine dont le detecteur est une chambre immergee dans la piscine, ce qui offre, dans le cas particulier des reacteurs piscines a couche chaude, le double avantage de pouvoir 'piloter' la couche chaude et de s'affranchir des rayonnements transitoires apparaissant dans le hall du reacteur au moment du defournement des dispositifs experimentaux. (auteurs)}
place = {France}
year = {1965}
month = {Jul}
}