MHTGR Inherent Heat Transfer Capability

Paper #:
  • 929282

Published:
  • 1992-08-03
Citation:
Berkoe, J., "MHTGR Inherent Heat Transfer Capability," SAE Technical Paper 929282, 1992, https://doi.org/10.4271/929282.
Author(s):
Pages:
5
Abstract:
The commercial Modular High Temperature Gas-Cooled Reactor (MHTGR) achieves improved reactor safety performance and reliability by utilizing a completely passive natural convection cooling system called the RCCS to remove decay heat in the event that all active cooling systems fail to operate. For the highly improbable condition that the RCCS were to become non-functional following a reactor depressurization event, the plant would be forced to rely upon its inherent thermo-physical characteristics to reject decay heat to the surrounding earth and ambient environment. A computational heat transfer model was created to simulate such a scenario. Plant component temperature histories were computed over a period of 20 days into the event. The results clearly demonstrate the capability of the MHTGR to maintain core integrity and provide substantial lead time for taking corrective measures.
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