처분시스템 설계를 위한 경수로 사용후핵연료 처분용기 열해석 평가
Thermal Analysis of PWR Spent Nuclear Fuel Disposal Canister for Disposal System: Canister Design and Disposal Concepts
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The thermal analyses of various disposal canisters using ANSYS Mechanical code were performedconsidering the vertical and horizontal disposal concepts. ACE7 Pressurized Water Reactor (PWR) type of SpentNuclear Fuel (SNF) was considered and 4 fuel assemblies in one disposal canister were used as the source term. In thevertical disposal concept, the KBS-3 and postulated type of disposal canisters showed that those peak temperatureswere lower than 100oC compared to STAD type of disposal canister. In the horizontal disposal concept, the peaktemperatures of KBS-3, Nagra and postulated type of disposal canisters were lower than 100oC, which satisfied thethermal design requirement of the disposal system. In this study, the higher peak temperature results of disposalcanisters indicated the greater thickness of bentonite buffer as the heat transfer effect get reduced. In addition, the heattransfer effect was also influenced by the distance between deposition hole and the dimension of disposal canisters. This study can be used for further research regarding Deep Geological Repository (DGR) design considering variousdisposal canisters and disposal concepts.
Abstract
The thermal analyses of various disposal canisters using ANSYS Mechanical code were performedconsidering the vertical and horizontal disposal concepts. ACE7 Pressurized Water Reactor (PWR) type of SpentNuclear Fuel (SNF) was considered and 4 fuel assemblies in one disposal canister were used as the source term. In thevertical disposal concept, the KBS-3 and postulated type of disposal canisters showed that those peak temperatureswere lower than 100oC compared to STAD type of disposal canister. In the horizontal disposal concept, the peaktemperatures of KBS-3, Nagra and postulated type of disposal canisters were lower than 100oC, which satisfied thethermal design requirement of the disposal system. In this study, the higher peak temperature results of disposalcanisters indicated the greater thickness of bentonite buffer as the heat transfer effect get reduced. In addition, the heattransfer effect was also influenced by the distance between deposition hole and the dimension of disposal canisters. This study can be used for further research regarding Deep Geological Repository (DGR) design considering variousdisposal canisters and disposal concepts.
참고문헌 (20)
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