On the way to enabling FRAPCON-3 to model spent fuel under dry storage conditions: The thermal evolution

AbstractExperimental results using environmental SEM on intentionally defected fuel particles showed that oxidation induced cracking could lead to the degradation of HTR coated particles. The interpretation proposed for the swelling resulting from cracking can be extended to irradiated nuclear fuels. That is why a new criterion was proposed to defined safe handling of defective fuel in dry storage condition. This criterion defines the time needed to create an oxidized layer thickness leading to significant cracking.

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Low-Temperature Rupture Behavior of Zircaloy-Clad Pressurized Water Reactor Spent Fuel Rods Under Dry Storage Conditions

Nuclear Technology ◽

10.13182/nt84-a33534 ◽

1984 ◽

Vol 67 (1) ◽

pp. 107-123 ◽

Cited By ~ 22

Author(s):

Robert E. Einziger ◽

Rajiv Kohli

Keyword(s):

Low Temperature ◽

Storage Conditions ◽

Pressurized Water Reactor ◽

Spent Fuel ◽

Pressurized Water ◽

Fuel Rods ◽

Water Reactor ◽

Dry Storage ◽

Rupture Behavior

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Modeling of Cladding Thermal Evolution Along Cask Storage

Volume 4: Radiation Protection and Nuclear Technology Applications; Fuel Cycle, Radioactive Waste Management and Decommissioning; Computational Fluid Dynamics (CFD) and Coupled Codes; Reactor Physics and Transport Theory ◽

10.1115/icone22-30758 ◽

2014 ◽

Cited By ~ 1

Author(s):

Jaime E. Penalva ◽

Francisco Feria ◽

Luis E. Herranz

Keyword(s):

Mechanical Performance ◽

Thermal Evolution ◽

Storage Period ◽

Thermal Characterization ◽

Spent Fuel ◽

Safety Requirements ◽

Fuel Rod ◽

Dry Storage ◽

Material Conditions ◽

The One

One of the safety requirements in dry storage of spent fuel is to ensure the cladding integrity. In this regard, the understanding of the cladding mechanical performance along the storage period is indispensable, both to analyse the failure probability and to characterize the state of the cladding so that fuel management is conducted with accurate knowledge of the material conditions. The main interest is focused on cladding degrading mechanisms as creep and hydrogen related (e.g. hydrides embrittlement), which are strongly influenced by temperature. Therefore, cladding thermal characterization along dry storage is an important element to predict fuel rod mechanical performance. Cladding temperature decay models found in the literature are fuel burnup independent and they cannot be applied to storage periods longer than some decades. The goal of this work is to develop a simplified model of cladding temperature as a function of burnup that spans up to 300 years of cask storage. To do so, a methodology is established based on FLUENT steady state calculations fed by heat decay data found in the literature for different burnups (33–63 MWd/kgU). From the results, a temperature correlation as a function of burnup and out-of-reactor time has been derived. It shows an average relative error less than 2% with respect FLUENT calculations. Finally, significance of having an accurate thermal characterization of the fuel rod has been highlighted by comparing fuel rod thermo-mechanics based on the derived correlation and the one resulting from using a correlation developed by EPRI.

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The Need for Integrating the Back End of the Nuclear Fuel Cycle in the United States of America

MRS Advances ◽

10.1557/adv.2018.231 ◽

2018 ◽

Vol 3 (19) ◽

pp. 991-1003 ◽

Cited By ~ 3

Author(s):

Evaristo J. Bonano ◽

Elena A. Kalinina ◽

Peter N. Swift

Keyword(s):

United States ◽

Nuclear Fuel ◽

United States Of America ◽

Spent Nuclear Fuel ◽

Fuel Cycle ◽

Nuclear Fuel Cycle ◽

The United States ◽

Spent Fuel ◽

Dry Storage ◽

The Us

ABSTRACTCurrent practice for commercial spent nuclear fuel management in the United States of America (US) includes storage of spent fuel in both pools and dry storage cask systems at nuclear power plants. Most storage pools are filled to their operational capacity, and management of the approximately 2,200 metric tons of spent fuel newly discharged each year requires transferring older and cooler fuel from pools into dry storage. In the absence of a repository that can accept spent fuel for permanent disposal, projections indicate that the US will have approximately 134,000 metric tons of spent fuel in dry storage by mid-century when the last plants in the current reactor fleet are decommissioned. Current designs for storage systems rely on large dual-purpose (storage and transportation) canisters that are not optimized for disposal. Various options exist in the US for improving integration of management practices across the entire back end of the nuclear fuel cycle.

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Analysis for seismic response of dry storage facility for spent fuel

Nuclear Engineering and Design ◽

10.1016/j.nucengdes.2008.09.006 ◽

2009 ◽

Vol 239 (1) ◽

pp. 158-168 ◽

Cited By ~ 10

Author(s):

Yung-Yen Ko ◽

Shang-Yi Hsu ◽

Cheng-Hsing Chen

Keyword(s):

Seismic Response ◽

Storage Facility ◽

Spent Fuel ◽

Dry Storage

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Calla lily inflorescences postharvest: pulsing with different sucrose concentrations and storage conditions

Ciência e Agrotecnologia ◽

10.1590/s1413-70542011000400003 ◽

2011 ◽

Vol 35 (4) ◽

pp. 657-663 ◽

Cited By ~ 2

Author(s):

Elka Fabiana Aparecida Almeida ◽

Patrícia Duarte de Oliveira Paiva ◽

Luiz Carlos de Oliveira Lima ◽

Franklin Cordeiro Silva ◽

Juliana Fonseca ◽

...

Keyword(s):

Sucrose Concentration ◽

Storage Conditions ◽

Prior Treatment ◽

Dry Storage ◽

Calla Lily ◽

Randomized Design ◽

Completely Randomized Design ◽

Pre Treatment ◽

Cold Chamber ◽

And Storage

Calla lily is an appreciated specie used for flower arrangements. In spite of its commercial importance, there is little information on calla lily postharvest conservation. Thus, this study aimed to determine the best sucrose concentration for pulsing and cold storage conditions to extend calla lily postharvest durability. Flower stalks were submitted to a pulsing pre-treatment using 2, 4, 8, 12 and 16% sucrose in the solution, for one hour, plus a treatment with direct storage in cold chamber (4ºC), without a prior-treatment. Dry storage or storage in solution with the commercial product Flower® was also tested. A completely randomized design was used with four replicates and three inflorescences per plot. Spathe length and width were daily measured from which the opening and wilting processes were analyzed. It was observed that pulsing with sucrose was efficient in extending calla lily inflorescences opening process and durability. Dry storage for short periods (less than six days) can also be used, but a prior-treatment with 12% sucrose pulsing for one hour or with a water supply for the same period was required. For storage in solution, a pulsing with 5% or 7.5% sucrose was recommended.

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