HTGR Knowledge Base

Conference Article: Investigations on the water ingress in a pebble-bed high temperature gas-cooled reactor

Mueller, H.J.; Ninaus, W.; Schuerrer, F.; Rabitsch, H. (Technische Univ., Graz (Austria). Inst. fuer Theoretische Physik und Reaktorphysik); Neef, R.D. (Kernforschungsanlage Juelich G.m.b.H. (Germany, F.R.). Inst. fuer Reaktorentwicklung)

Abstract

The water ingress in the core of an undermoderated high temperature gas-cooled reactor can yield to a safety risk. This paper contains investigations to test the applicability of the reactor program GAMTEREX for criticality and neutron flux determination of water infiltrated pebble bed cores. In order to judge precalculated reactivity worths and reaction rates, critical experiments were performed in a pebble bed cell using the ringcore of the Siemens Argonaut Reactor Graz as a driver.

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key words: computer calculations; htgr type reactors; injection; leaks; multiplication factors; reactivity insertions; reactor cores; reactor safety experiments; reactor safety; steam generators; verification; water influx; boilers; computer codes; gas cooled reactors; graphite moderated reactors; intake; reactor components; reactors; safety; vapor generators
Reference:
Specialists' meeting on safety and accident analysis for gas-cooled reactors. Oak Ridge, TN (USA). 13-15 May 1985
International Atomic Energy Agency, Vienna (Austria)
IAEA-TECDOC--358, pp:227-234