This report is focused on the PDS-XADS fuel rod thermal and mechanical performance analysis. The Design Basis Conditions - Category I (Normal Operations) were assumed. In particular two cases have been considered: case A (nominal conditions), case B (linear heat rate and fast neutron flux increased by 20% with respect to case A as well as irradiation time increased by 50%). Results confirm that design limits are fully respected far both cases. The Helium pre-pressurisation effect was specifically investigated. The analysis suggests that increasing the fabrication tilling gas pressure would be beneficial for the overall fueI rod performance. Further analysis has been performed to investigate the PDS-XADS fuel rod behaviour when a zero lower plenum volume is assumed. In this case a significant difference is found under conditions B at the End Ot Life, nevertheless design limits are still respected.

D67 App. D - Fuel Rod Thermal and Mechanical Analysis

Calabrese, R.
2004

Abstract

This report is focused on the PDS-XADS fuel rod thermal and mechanical performance analysis. The Design Basis Conditions - Category I (Normal Operations) were assumed. In particular two cases have been considered: case A (nominal conditions), case B (linear heat rate and fast neutron flux increased by 20% with respect to case A as well as irradiation time increased by 50%). Results confirm that design limits are fully respected far both cases. The Helium pre-pressurisation effect was specifically investigated. The analysis suggests that increasing the fabrication tilling gas pressure would be beneficial for the overall fueI rod performance. Further analysis has been performed to investigate the PDS-XADS fuel rod behaviour when a zero lower plenum volume is assumed. In this case a significant difference is found under conditions B at the End Ot Life, nevertheless design limits are still respected.
Rapporto tecnico;Reattori sottocritici/ADS;Combustibile nucleare;Termomeccanica
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.12079/7064
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