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Irradiation effects on the rock-salt HAW-Asse Project; Effets de l`irradiation sur le sel gemme Projet HAW-Asse

Technical Report:

Abstract

Since 1988 ANDRA is involved in the HAW project, a test disposal of high level radioactive canisters in a salt dome, at Asse in FRG. ANDRA is responsible of in situ measurements, laboratory analyses and predictive calculations. Thus are delayed in situ dose measurements. Two methods have been developed, one is based on thermoluminescent dosemeters and measure an integrated dose, the other uses ionization chambers and gives a dose rate. Specific equipments had to be developed: manufacturing and testing. Geomechanics is also concerned by in situ measurement, especially rocksalt deformation, induced by the heat production of the canisters. Three groups of tiltmeters have been installed, providing informations on both natural creeping of rocksalt and effect of electrical heating in two boreholes. Laboratory studies consist in analyzing gases released by Asse salt samples irradiated under various conditions. Most of the 150 sample irradiations are completed. The last topic to the project intends to predict gamma ray flux and spectrum in the HAW test field using computer models. The work carried out and discussed includes digitalization of test data (sources, borehole lining, rocksalt), Bremsstrahlung sensitivity analysis, and calculation of both energy deposited and dose rate around the sources. This calculation was performed  More>>
Authors:
Palut, J M [1] 
  1. CEA/ANDRA, 92 - Fontenay-aux-Roses (FR)
Publication Date:
Dec 31, 1991
Product Type:
Technical Report
Report Number:
EUR-13264
Reference Number:
SCA: 052002; 440102; 440103; PA: FRD-92:000008; SN: 92000651853
Resource Relation:
Other Information: PBD: 1991
Subject:
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; GAS ANALYSIS; ASSE SALT MINE; TEMPERATURE DEPENDENCE; RADIATION FLUX; COMPUTER CALCULATIONS; RADIATION DOSE DISTRIBUTIONS; ENERGY DEPOSITION; RADIATION EFFECTS; UNDERGROUND STORAGE; RADIOACTIVE WASTE STORAGE; THERMOLUMINESCENT DOSEMETERS; IONIZATION CHAMBERS; RADIOACTIVE MATERIALS; DOSE RATES; RADIATION DOSES; BREMSSTRAHLUNG; GAMMA SPECTRA; 052002; 440102; 440103; WASTE DISPOSAL AND STORAGE; RADIATION DOSEMETERS; NUCLEAR SPECTROSCOPIC INSTRUMENTATION
OSTI ID:
10114232
Research Organizations:
Commission of the European Communities, Luxembourg (Luxembourg)
Country of Origin:
France
Language:
French
Other Identifying Numbers:
Other: ON: TI92761838; CNN: Contract FI1W/0199; TRN: FR9200008
Availability:
OSTI; NTIS (US Sales Only)
Submitting Site:
FRN
Size:
151 p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

Palut, J M. Irradiation effects on the rock-salt HAW-Asse Project; Effets de l`irradiation sur le sel gemme Projet HAW-Asse. France: N. p., 1991. Web.
Palut, J M. Irradiation effects on the rock-salt HAW-Asse Project; Effets de l`irradiation sur le sel gemme Projet HAW-Asse. France.
Palut, J M. 1991. "Irradiation effects on the rock-salt HAW-Asse Project; Effets de l`irradiation sur le sel gemme Projet HAW-Asse." France.
@misc{etde_10114232,
title = {Irradiation effects on the rock-salt HAW-Asse Project; Effets de l`irradiation sur le sel gemme Projet HAW-Asse}
author = {Palut, J M}
abstractNote = {Since 1988 ANDRA is involved in the HAW project, a test disposal of high level radioactive canisters in a salt dome, at Asse in FRG. ANDRA is responsible of in situ measurements, laboratory analyses and predictive calculations. Thus are delayed in situ dose measurements. Two methods have been developed, one is based on thermoluminescent dosemeters and measure an integrated dose, the other uses ionization chambers and gives a dose rate. Specific equipments had to be developed: manufacturing and testing. Geomechanics is also concerned by in situ measurement, especially rocksalt deformation, induced by the heat production of the canisters. Three groups of tiltmeters have been installed, providing informations on both natural creeping of rocksalt and effect of electrical heating in two boreholes. Laboratory studies consist in analyzing gases released by Asse salt samples irradiated under various conditions. Most of the 150 sample irradiations are completed. The last topic to the project intends to predict gamma ray flux and spectrum in the HAW test field using computer models. The work carried out and discussed includes digitalization of test data (sources, borehole lining, rocksalt), Bremsstrahlung sensitivity analysis, and calculation of both energy deposited and dose rate around the sources. This calculation was performed for 50 points, requiring 400 runs of Mercure-5 models. Interpolation functions are also provided in order to give values between these 50 points. The next step aim to determine gamma spectrum in salt and also energy deposited at various locations in the dummy canister where samples are intended to be emplaced. TRIPOLI-2 Model will be used for these purposes.}
place = {France}
year = {1991}
month = {Dec}
}