Method of cooling the ceiling reflector in a nuclear reactor
AssigneeHochtemperatur-Kernkraftwerk GmbH (HKG) Gemeinsames Europaisches Unternehmen
InventorHans-Peter Buthmann
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Abstract
In a gas-cooled solid-moderated high-temperature reactor where fuel elements are introduced into the core through feed pipes in the ceiling reflector, the ceiling is cooled after reactor shutdown by introducing cooled gas through centrally arranged feed pipes and by removing the gas through the other feed pipes located radially outwardly of the inlet feed pipes. This arrangement effects a flow of the gas generally radially outwardly over the ceiling reflector. After the gas is removed from the core it is circulated through a closed circuit, cooled and blown back through the inlet feed pipes into the core.
Claims7
A method for cooling the ceiling reflector in a shutdown gas-cooled, solid-moderated, high-temperature reactor using spherical fuel elements which are fed into the reactor core chamber through feed pipes extending through the ceiling reflector of the core wherein during shutdown including terminating the feed of the fuel elements into the core and terminating the supply of gas coolant into and its removal from the core so that an amount of gas coolant remains in the core, comprising the steps of injecting a cooled gas through some of the feed pipes into the upper portion of the core chamber adjacent the ceiling reflector and removing the injected gas from the upper portion through the other feed pipes for establishing a flow of the cooled gas over the ceiling reflector within the upper region of the core chamber.
Dependencies are inferred from the claim text.