A Study on Reusable Metal Component as Burnable Absorber Through Monte Carlo Depletion Analysis

Alrawash, Saed and Boravy, Muth and Park, Chang Je and Kim, Jong Sung (2020) A Study on Reusable Metal Component as Burnable Absorber Through Monte Carlo Depletion Analysis. Journal of Nuclear Fuel Cycle and Waste Technology (JNFCWT), 18 (4). pp. 481-496.

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Abstract

After nuclear power plants are permanently shut down and decommissioned, the remaining irradiated metal components such as stainless steel, carbon steel, and Inconel can be used as neutron absorber. This study investigates the possibility of reusing these metal components as neutron absorber materials, that is burnable poison. The absorption cross section of the irradiated metals did not lose their chemical properties and performance even if they were irradiated over 40-50 years in the NPPs. To examine the absorption capability of the waste metals, the lattice calculations of WH 17×17 fuel assembly were analyzed. From the results, Inconel-718 significantly hold-down fuel assembly excess reactivity compared to stainless steel 304 and carbon steel because Inconel-718 contains a small amount of boron nuclide. From the results, a 20wt% impurity of boron in irradiated Inconel-718 enhances the excess reactivity suppression. The application of irradiated Inconel-718 as a burnable absorber for SMR core was investigated. The irradiated Inconel-718 impurity with 20wt% of boron content can maintain and suppress the whole core reactivity. We emphasize that the irradiated metal components can be used as burnable absorber materials to control the reactivity of commercial reactor power and small modular reactors.

Item Type:
Journal Article
Journal or Publication Title:
Journal of Nuclear Fuel Cycle and Waste Technology (JNFCWT)
ID Code:
176444
Deposited By:
Deposited On:
20 Oct 2022 16:15
Refereed?:
Yes
Published?:
Published
Last Modified:
22 Nov 2022 11:52