Preliminary Analysis of Unprotected Loss of Heat Sink in Small Long Life Gas Cooled Fast Reactor

Su'ud Zaki; Nuri Trianti; Rosidah M. Indah

doi:10.4028/www.scientific.net/AMM.751.268

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 751Preliminary Analysis of Unprotected Loss of Heat...

Preliminary Analysis of Unprotected Loss of Heat Sink in Small Long Life Gas Cooled Fast Reactor

Abstract:

The failure of the secondary side in Gas Cooled Fast Reactor system, which may contain co-generation system, will cause loss of heat sink (LOHS) accident. In this study accident analysis of unprotected loss of heat sink due to the failure of the secondary cooling system has been investigated. The thermal hydraulic model include transient hot spot channel model in the core, steam generator, and related systems. Natural circulation based heat removal system is important to ensure inherent safety capability during unprotected accidents. Therefore the system similar to RVACS (reactor vessel auxiliary cooling system) is also plays important role to limit the level of consequence during the accident. As the results some simulations for small 60 MWt gas cooled fast reactors has been performed and the results show that the reactor can anticipate the failure of the secondary system by reducing power through reactivity feedback and remove the rest of heat through natural circulations based decay heat removal (RVACS system).

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Periodical:

Applied Mechanics and Materials (Volume 751)

Pages:

268-272

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.751.268

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Online since:

April 2015

Authors:

Su'ud Zaki*, Nuri Trianti, Rosidah M. Indah

Keywords:

Gas Cooled Fast Reactor, Natural Circulation, Neutronic Model, Thermal Hydraulic Model, Unprotected Loss of Heat Sink

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* - Corresponding Author

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