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Analysis on Water Ingress Volume Effect of The RDE Core to Criticality (Hery Adriala), Suwotob), Pande Made Udiyanic), Amir Hamzahd), Zuhaire)

Hery Adrial, HA and Suwoto, AW and Pande Made Udiyani, PMU and Amir Hamzah, AH and Zuhair, Z (2019) Analysis on Water Ingress Volume Effect of The RDE Core to Criticality (Hery Adriala), Suwotob), Pande Made Udiyanic), Amir Hamzahd), Zuhaire). 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 accident of water ingress is a form of accident that only occurs in HTGR where the fluid of secondary cooling enters the core due to cracking or rupture at the Steam Generator (SG). This condition will make the RDE core unsafely. Quite a lot of research is related to the neutronics of reactors regarding water ingress accidents. These studies generally revolve around relationship on the critical and reactivity to water ingress density. Because this study was made aiming to analyze the effect of water ingress volume on the criticality of RDE core for various temperatures at a 4.5 MPa pressure core. The method used is to assume that water ingress accidents occur along the cold leg pipe to the hot leg pipe on SG. The pressure core after the water ingress is assumed to be the mean pressure between the core and SG while the temperature core after the water ingress is assumed to range from 105 oC to 450 oC. The results obtained showed that for temperatures core of 105 oC to 250 oC, the fluid that entered to the core in the form of water and had a curved curve with the maximum multiplication factor value occurring at a volume water ingress of 20% then the multiplication factor continued to decline until the reactor became sub-critical as the volume water ingress increased that goes to the core. Whereas for temperatures of 275 oC to 450 oC, the fluid entering the RDE core is in the form of vapor (void) which keeps the multiplication factor going up to supercritical state, thus making the reactor core unsafe as the volume of water ingress enters the core Keywords: Water ingress volume, RDE, Criticality, MCNP6.1, Pressure core, Temperature various

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: 04 Aug 2020 08:04
Last Modified: 04 Aug 2020 08:04
URI: http://repo-nkm.batan.go.id/id/eprint/9938

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