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Dry storage modeling activities at PSI: implementation and testing of a creep model for dry storage

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Published/Copyright: February 23, 2021
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Kerntechnik
From the journal Kerntechnik Volume 85 Issue 6

Abstract

According to the Swiss waste management policy, spent nuclear fuel is planned to be disposed in a deep underground repository. Prior to final disposal, spent nuclear fuel is stored at reactor sites and in a centralized dry storage facility. Since the operation dates of the final repository are unknown, extended periods of interim storage have to be considered. A research program to investigate the fuel rod integrity during long-term dry storage has recently been launched at Paul Scherrer Institute. In the context of the project, fuel rod performance simulations will be carried out with the code Falcon. Until now, an extensive literature survey concerning current trends in dry storage modelling has been written and first developments of Falcon’s capabilities towards dry storage modeling have been made. In this work, Falcon has been modified by implementing a long-term cladding creep model. The original and upgraded versions of Falcon have been used to simulate a demonstration case consisting of the base irradiation, wet storage, drying and dry storage. Results obtained with both versions have shown an important difference in the cladding hoop creep which justifies implementation of the new creep model.

Online erschienen: 2021-02-23
Erschienen im Druck: 2020-06-01

© 2020 by Walter de Gruyter Berlin/Boston

Articles in the same Issue

  1. CONTENTS
  2. CALENDAR OF EVENTS · VERANSTALTUNGSKALENDER
  3. Editorial
  4. Major sensitivities in FRAPCON-xt modeling of high burn-up fuel rods during dry storage to design and irradiation variables
  5. Dry storage modeling activities at PSI: implementation and testing of a creep model for dry storage
  6. SEDS benchmark for fuel rod behaviour during dry storage – preliminary results
  7. Investigation of the temporal rearrangement of zirconium hydride precipitates in cladding material for the interim and final storage period
  8. Overview of metal seal tests performed at BAM and implications for extended interim storage
  9. Comparison of numerical and semi-analytical analyses of temperature fields of loaded dry casks
  10. Analysis and evaluation of tomographic gamma scanning image reconstruction algorithm
  11. Design of Geiger Muller detector system for searching lost γ-ray source
  12. Note · Imprint
https://doi.org/10.3139/124.200072

Articles in the same Issue

  1. CONTENTS
  2. CALENDAR OF EVENTS · VERANSTALTUNGSKALENDER
  3. Editorial
  4. Major sensitivities in FRAPCON-xt modeling of high burn-up fuel rods during dry storage to design and irradiation variables
  5. Dry storage modeling activities at PSI: implementation and testing of a creep model for dry storage
  6. SEDS benchmark for fuel rod behaviour during dry storage – preliminary results
  7. Investigation of the temporal rearrangement of zirconium hydride precipitates in cladding material for the interim and final storage period
  8. Overview of metal seal tests performed at BAM and implications for extended interim storage
  9. Comparison of numerical and semi-analytical analyses of temperature fields of loaded dry casks
  10. Analysis and evaluation of tomographic gamma scanning image reconstruction algorithm
  11. Design of Geiger Muller detector system for searching lost γ-ray source
  12. Note · Imprint
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