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Analysis on the Role of RSG-GAS Pool Cooling System during Partial Loss of Heat Sink Accident

Syusasdi, syus and Endiah Puji Hastuti, EPH and Sukmanto Dibyo, SD and Andy Sofrani Ekariansyah, ASE (2017) Analysis on the Role of RSG-GAS Pool Cooling System during Partial Loss of Heat Sink Accident. In: International Conference on Nuclear Technologies and Sciences (ICoNETS 2017), 12 Oktober 2017, Makasar - Sulawesi Selatan - Indonesia.

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Abstract

Abstract RSG-GAS is a 30 MW reactor that is mostly used for radioisotope production and experimental activities. Recently, it is regularly operated at half of its capacity for efficiency reason. During an accident, especially loss of heat sink, the role of its pool cooling system is very important to dump decay heat. An analysis using single failure approach and partial modeling of RELAP5 performed by S. Dibyo, 2010 shows that there is no significant increase in the coolant temperature if this system is properly functioned. However lessons learned from the Fukushima accident revealed that an accident can happen due to multiple failures. Considering ageing of the reactor, in this research the role of pool cooling system is to be investigated for a partial loss of heat sink accident which is at the same time the protection system fails to scram the reactor when being operated at 15 MW. The purpose is to clarify the transient characteristics and the final state of the coolant temperature. The method used is by simulating the system in RELAP5 code. Calculation results shows the pool cooling systems reduce coolant temperature for about 1 K as compared without activating them. The result alsoreveals that when the reactor is being operated at half of its rated power, it is still in safe condition for a partial loss of heat sink accident without scram.

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: 14 May 2018 02:12
Last Modified: 14 May 2018 02:12
URI: http://repo-nkm.batan.go.id/id/eprint/1360

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