HTGR Knowledge Base

Conference Article: Studies on self-acting heat removal systems on the basis of partial boiling of water for steel pressure vessel cooling of modular HTRs

Abstract

A review is given on the technology of reactor pressure vessel cooling in HTR conceptual designs, plants in construction and existing plants of the HTR. Additionally an overview is given on the results of studies on heat removal systems for the cooling of the steel pressure vessel and the reactor cavity for modular HTR designs, as well as for the cooling of hot gas ducts, e.g. in the project 'AVR reconstruction'. For the recent conceptual design and layout work on the Pebble Bed Modular Reactor with a direct Gas Turbine Cycle, PBMR-GT, a self-acting heat removal system on the basis of partial boiling liquids is proposed as a back-up system in the case of the loss of forced cooling of the pressure boundary of the primary circuit in normal operation

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Reference:

Technical committee meeting on high temperature gas cooled reactor technology development. Johannesburg (South Africa). 13-15 Nov 1996.

International Atomic Energy Agency, Vienna (Austria)

IAEA-TECDOC--988, pp:293-304