Recalculation with SEACAB of the activation by spent fuel neutrons and residual dose originated in the racks replaced at Cofrentes NPP

In order to increase the storage capacity of the East Spent Fuel Pool at the Cofrentes NPP, located in Valencia province, Spain, the existing storage stainless steel racks were replaced by a new design of compact borated stainless steel racks allowing a 65% increase in fuel storing capacity. Calcula...

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Bibliographic Details
Main Authors: Ortego, Pedro, Rodriguez, Alain, Töre, Candan, Compadre, José Luis de Diego, Quesada, Baltasar Rodriguez, Moreno, Raul Orive
Format: Conference Proceeding
Language:English
Subjects:
Activation
Dosage
Mathematical analysis
Nuclear power plants
Racks
Shielding
Spent nuclear fuels
Stainless steel
Stainless steels
Storage capacity
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Summary:In order to increase the storage capacity of the East Spent Fuel Pool at the Cofrentes NPP, located in Valencia province, Spain, the existing storage stainless steel racks were replaced by a new design of compact borated stainless steel racks allowing a 65% increase in fuel storing capacity. Calculation of the activation of the used racks was successfully performed with the use of MCNP4B code. Additionally the dose rate at contact with a row of racks in standing position and behind a wall of shielding material has been calculated using MCNP4B code as well. These results allowed a preliminary definition of the burnker required for the storage of racks. Recently the activity in the racks has been recalculated with SEACAB system which combines the mesh tally of MCNP codes with the activation code ACAB, applying the rigorous two-step method (R2S) developed at home, benchmarked with FNG irradiation experiments and usually applied in fusion calculations for ITER project.
ISSN:2100-014X
2101-6275
2100-014X
DOI:10.1051/epjconf/201715305012