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Alternative Design of Temporary Spent Fuel Storage of Indonesian RDNK Reactor (Amir Hamzaha), Hery Adrial, Ihda Husnayani, Pande Made Udiyani)

Amir Hamzah, AH and Hery Adrial, HA and Ihda Husnayani, IH and Pande Made Udiyani, PMU (2019) Alternative Design of Temporary Spent Fuel Storage of Indonesian RDNK Reactor (Amir Hamzaha), Hery Adrial, Ihda Husnayani, Pande Made Udiyani). In: ICONets 2019 Universitas Andalas Padang Sumatera Barat, 18 September 2019, Universitas ANDALAS Fakultas Teknik Padang Sumatera Barat.

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Abstract

Abstract. The Non-Commercial Power Reactor (Reaktor Daya Non Komersial: RDNK) is a Pebble-bed type Gas-Cooled High Temperature Reactor with 10 MW thermal power designed by the National Nuclear Energy Agency (BATAN). RDNK reactor follows multipass fuel loading scheme with of UO2-fueled coated with TRISO layers and duration of stay in the reactor core for 1100 days. On the working core, the scenario of fuel loading pattern is fresh fuels loading and discharge of spent fuel pebbles as many as 25 pieces every day. Thus, if the reactor operating cycle is grouped into 5 subcycles, then in 220 days/sub-cycle will be as many as 5500 spent fuels are produced. Therefore, a safe temporary spent fuels storage container must be designed in the reactor building to hold the spent fuels before sending them to further storage. This study is to design the temporary spent fuel storage to ensure radiation safety for workers. The design of spent fuels storage containers was carried out using a monte-carlo based program and the determination of the spent fuels source strength using the ORIGEN2.1 program. The results of the design of temporary storage containers to hold 5500 spent fuel pebbles using alternatives shielding materials of ordinary concrete shield as thick as 50 cm, iron-portland concrete is 20 cm thick and lead as thick as 10 cm. All these containers provide radiation safety assurance for workers after the spent fuels have decayed for 6 months. Thus, the delivery of spent fuels to further storage outside the reactor building is recommended after 6 months decayed. Keywords: RDNK, HTR, spent fuel, temporary storage, radiation shielding, dose rates

Item Type: Conference or Workshop Item (Paper)
Subjects: Keselamatan dan Keamanan Nuklir
Divisions: Pusat Teknologi dan Keselamatan Reaktor Nuklir
Depositing User: USER PTKRN BATAN
Date Deposited: 28 Jul 2020 06:40
Last Modified: 28 Jul 2020 06:40
URI: http://repo-nkm.batan.go.id/id/eprint/9907

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