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Title:
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Technology assessment HTR: pt. 6: the radiological risks associated withthe thorium-fuelled High Temperature Reactor: a comparative risk
evaluation
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Author(s):
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Published by:
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Publication date:
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ECN
NUC
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1996
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ECN report number:
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Document type:
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ECN-C--96-046
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ECN publication
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Number of pages:
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Full text:
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60
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Download PDF
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Abstract:
This report presents the results of task B.3 of the 'TechnologyAssessment of the High Temperature Reactor' project. The objective of task
B.3 was to evaluate the radiological risks to the general public associated
with the sustainable HTGR cycle. Since the technologies to be used at several
stages of this fuel cycle are still in the design phase and since a detailed
specification of this fuel cycle has not yet been developed, the emphasis was
on obtaining a global impression of the risk associated with a generic
thorium-based HTGR fuel cycle. This impression was obtained by performing a
comparative risk analysis on the basis of data given in the literature. As
reference for the comparison a generic uranium fuel led LWR cycle was used.
The structure of the report is as follows. In Chapter 2 the general
methodology for assessing the radiological risks associated with nuclear
installations is described. An overview is given of the measures commonly
used to quantify these risks. In Chapter 3 an overview is given of the
different stages of the reference uranium fuel led LWR cycle and the thorium
fuel led HTGR cycle. In Chapter 4 a stage-by-stage analysis is given of the
radiological risks associated with the two fuel cycles. Finally, in Chapter 5
an evaluation is made of the radiological risks associated with the LWR and
HTGR cycles and with thorium and uranium fuels. In Appendix A the production
and releases of "1"4C for LWR and HTGR fuel cycle facilities is considered in
detail. 11 figs., 10 tabs., 10 refs.
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