Review of the Licensing Basis for RIA and LOCA Transients in Light of New Evidence on High Burnup Fuel Behavior

The fuel of power reactors can be damaged by both rapid reactivity insertion accidents (RIA) and by Loss of Coolant Accidents (LOCA) due to the break of a coolant pipe. The consequences of such postulated accidents with a very low probability can be mitigated by dedicated safety systems. Y...

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Main Authors: Martin A. Zimmermann, Gerhard Bart
Format: Article
Language:deu
Published: Swiss Chemical Society 2005-12-01
Series:CHIMIA
Subjects:
Online Access:https://chimia.ch/chimia/article/view/4097
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author Martin A. Zimmermann
Gerhard Bart
author_facet Martin A. Zimmermann
Gerhard Bart
author_sort Martin A. Zimmermann
collection DOAJ
description The fuel of power reactors can be damaged by both rapid reactivity insertion accidents (RIA) and by Loss of Coolant Accidents (LOCA) due to the break of a coolant pipe. The consequences of such postulated accidents with a very low probability can be mitigated by dedicated safety systems. Yet, the possible consequences need to be assessed as part of the safety evaluation in the framework of the reactor licensing process as these transients form part of the so-called design basis. Most importantly, coolability of the reactor core must be demonstrated. The current paper reviews the important fuel related phenomena that may occur during such transients and their relation to the current licensing basis. Finally, possible changes in light of new experimental evidence from high burnup fuel behavior tests are discussed.
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spelling doaj.art-aafb92993002405ab8d3136324c3f89d2022-12-22T04:16:39ZdeuSwiss Chemical SocietyCHIMIA0009-42932673-24242005-12-01591210.2533/000942905777675291Review of the Licensing Basis for RIA and LOCA Transients in Light of New Evidence on High Burnup Fuel BehaviorMartin A. ZimmermannGerhard Bart The fuel of power reactors can be damaged by both rapid reactivity insertion accidents (RIA) and by Loss of Coolant Accidents (LOCA) due to the break of a coolant pipe. The consequences of such postulated accidents with a very low probability can be mitigated by dedicated safety systems. Yet, the possible consequences need to be assessed as part of the safety evaluation in the framework of the reactor licensing process as these transients form part of the so-called design basis. Most importantly, coolability of the reactor core must be demonstrated. The current paper reviews the important fuel related phenomena that may occur during such transients and their relation to the current licensing basis. Finally, possible changes in light of new experimental evidence from high burnup fuel behavior tests are discussed. https://chimia.ch/chimia/article/view/4097High burnup fuelLicensing basisLoca-transientLwrRia-transient
spellingShingle Martin A. Zimmermann
Gerhard Bart
Review of the Licensing Basis for RIA and LOCA Transients in Light of New Evidence on High Burnup Fuel Behavior
CHIMIA
High burnup fuel
Licensing basis
Loca-transient
Lwr
Ria-transient
title Review of the Licensing Basis for RIA and LOCA Transients in Light of New Evidence on High Burnup Fuel Behavior
title_full Review of the Licensing Basis for RIA and LOCA Transients in Light of New Evidence on High Burnup Fuel Behavior
title_fullStr Review of the Licensing Basis for RIA and LOCA Transients in Light of New Evidence on High Burnup Fuel Behavior
title_full_unstemmed Review of the Licensing Basis for RIA and LOCA Transients in Light of New Evidence on High Burnup Fuel Behavior
title_short Review of the Licensing Basis for RIA and LOCA Transients in Light of New Evidence on High Burnup Fuel Behavior
title_sort review of the licensing basis for ria and loca transients in light of new evidence on high burnup fuel behavior
topic High burnup fuel
Licensing basis
Loca-transient
Lwr
Ria-transient
url https://chimia.ch/chimia/article/view/4097
work_keys_str_mv AT martinazimmermann reviewofthelicensingbasisforriaandlocatransientsinlightofnewevidenceonhighburnupfuelbehavior
AT gerhardbart reviewofthelicensingbasisforriaandlocatransientsinlightofnewevidenceonhighburnupfuelbehavior