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Updating of the performance assessments of the geological disposal of high-level and medium-level wastes in the Boom clay formation

Abstract

The objective of this report is to assess the performance of disposed medium-level and alpha-bearing waste in a geological repository in the Boom clay formation at the Mol site (Belgium). The results of this study are based on calculations that are in agreement with recent information on the Belgian nuclear programme and the corresponding waste arising. The applied methodology consists of two consecutive steps: (1) a scenario analysis in which relevant scenarios, leading to the exposure of man to radiation are selected, and (2) a consequence analysis in which potential radiological consequences of the exposure are evaluated. The scenario, selected in this study, is designated as the normal evolution scenario and comprises a normal evolution scenario in which the present conditions are assumed to last infinitely. The scenario is extended with a climatic change, a secondary glaciation effects, and a faulting scenario. The applied consequence analysis consists in deterministic and stochastic calculations, which are are complementary. Three pathways of radionuclides to man were considered: (1) the discharge of contaminated groundwater into rivers or (2) into agricultural soils, and (3) the sinking of a water well into the aquifer that overlies the host formation. Calculations indicate that most radionuclides decay within  More>>
Publication Date:
Dec 31, 1991
Product Type:
Technical Report
Report Number:
BLG-634
Reference Number:
SCA: 540230; PA: AIX-25:036159; EDB-94:083745; ERA-19:019577; NTS-94:022071; SN: 94001206925
Resource Relation:
Other Information: PBD: 1991
Subject:
54 ENVIRONMENTAL SCIENCES; PERFORMANCE TESTING; BELGIUM; CLAYS; PROGRESS REPORT; RADIOACTIVE WASTES; UNDERGROUND DISPOSAL; 540230; RADIOACTIVE MATERIALS MONITORING AND TRANSPORT
OSTI ID:
10152636
Research Organizations:
Centre d`Etude de l`Energie Nucleaire, Mol (Belgium)
Country of Origin:
Belgium
Language:
English
Other Identifying Numbers:
Other: ON: DE94624245; TRN: BE9400003036159
Availability:
OSTI; NTIS (US Sales Only); INIS
Submitting Site:
INIS
Size:
352 p.
Announcement Date:
Jul 05, 2005

Citation Formats

Marivoet, J, Bonne, A, and Neerdael, B. Updating of the performance assessments of the geological disposal of high-level and medium-level wastes in the Boom clay formation. Belgium: N. p., 1991. Web.
Marivoet, J, Bonne, A, & Neerdael, B. Updating of the performance assessments of the geological disposal of high-level and medium-level wastes in the Boom clay formation. Belgium.
Marivoet, J, Bonne, A, and Neerdael, B. 1991. "Updating of the performance assessments of the geological disposal of high-level and medium-level wastes in the Boom clay formation." Belgium.
@misc{etde_10152636,
title = {Updating of the performance assessments of the geological disposal of high-level and medium-level wastes in the Boom clay formation}
author = {Marivoet, J, Bonne, A, and Neerdael, B}
abstractNote = {The objective of this report is to assess the performance of disposed medium-level and alpha-bearing waste in a geological repository in the Boom clay formation at the Mol site (Belgium). The results of this study are based on calculations that are in agreement with recent information on the Belgian nuclear programme and the corresponding waste arising. The applied methodology consists of two consecutive steps: (1) a scenario analysis in which relevant scenarios, leading to the exposure of man to radiation are selected, and (2) a consequence analysis in which potential radiological consequences of the exposure are evaluated. The scenario, selected in this study, is designated as the normal evolution scenario and comprises a normal evolution scenario in which the present conditions are assumed to last infinitely. The scenario is extended with a climatic change, a secondary glaciation effects, and a faulting scenario. The applied consequence analysis consists in deterministic and stochastic calculations, which are are complementary. Three pathways of radionuclides to man were considered: (1) the discharge of contaminated groundwater into rivers or (2) into agricultural soils, and (3) the sinking of a water well into the aquifer that overlies the host formation. Calculations indicate that most radionuclides decay within the first metres of the clay barrier. The fission and activation products {sup 14}C, {sup 129}I, {sup 79}Se, {sup 99}Tc, {sup 107}Pd, {sup 93}Zr, and {sup 135}Sr as well as some actinides of the {sup 237}Np and uranium decay series can however reach the biosphere. The maximum dose rates for high-level waste, fuel cladding, medium-level, and iodine waste were calculated. Deterministic calculations indicate that the maximum dose rates are attained via the water well pathway for the case of the climatic change scenario. (A.S.).}
place = {Belgium}
year = {1991}
month = {Dec}
}