Thermohydraulic analysis of BWR and PWR spent fuel assemblies contained within square canisters
This report presents the results of several thermohydraulic simulations of spent fuel assembly/canister configurations performed in support of a program investigating the feasibility of storing spent nuclear fuel assemblies in canisters that would be stored in an air environment. Eleven thermohydraulic simulations were performed. Five simulations were performed using a single BWR fuel assembly/canister design. The various cases were defined by changing the canister spacing and the heat generation rate of the fuel assembly. For each simulation a steady-state thermohydraulic solution was achieved for the region inside the canister. Similarly, six simulations were performed for a single PWR fuel assembly/canister design. The square fuel rod arrays were contained in square canisters which would permit closer packing of the canisters in a storage facility. However, closer packing of the canisters would result in higher fuel temperatures which would possibly have an adverse impact on fuel integrity. Thus, the most important aspect of the analysis was to define the peak fuel assembly temperatures for each case. These results are presented along with various temperature profiles, heat flux distributions, and air velocity profiles within the canister. 48 figures, 4 tables.
- Research Organization:
- Battelle Pacific Northwest Labs., Richland, WA (United States)
- DOE Contract Number:
- AC06-76RL01830
- OSTI ID:
- 6053067
- Report Number(s):
- PNL-3945; ON: DE82000413; TRN: 81-016475
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
SPENT FUEL STORAGE
CONVECTION
TEMPERATURE DISTRIBUTION
AIR
BWR TYPE REACTORS
CONTAINERS
FUEL ASSEMBLIES
HEAT TRANSFER
PWR TYPE REACTORS
SIMULATION
SPENT FUEL ELEMENTS
THEORETICAL DATA
VELOCITY
DATA
ENERGY TRANSFER
FLUIDS
FUEL ELEMENTS
GASES
INFORMATION
NUMERICAL DATA
REACTOR COMPONENTS
REACTORS
STORAGE
WATER COOLED REACTORS
WATER MODERATED REACTORS
050900* - Nuclear Fuels- Transport
Handling
& Storage