PROCESS FOR REGULATING THE TEMPERATURE OF GRAPHITE-MODERATED NUCLEAR REACTORS
In order to suppress or to reduce the positive temperature coefficient of reactivity of the moderator which may arise in gas-cooled, graphite-moderated nuclear reactors, a portion of the coolant entering the reactor is led first through the graphite-moderator structure before it comes into counter-flow heat exchange contact with the fuel elements, thus decreasing the temperature variations in the moderator and hence decreasing the effects of the said positive temperature coefficient. The other portion of the coolant entering the reactor is preferably led over the inside surface of the containing shell to cool it. The portion of the flow passing first through the moderator system, is divided ibto two further portions, one of them passing through the annular interspace formed by the thermal insulating tubes enclosing the fuel elements and the inner surface of the reactor channel passing through the moderator structure, while the other passes through channels not enclosing fuel elements. (NPO)
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-16-015839
- OSTI ID:
- 4782800
- Report Number(s):
- FR 1238510
- Country of Publication:
- France
- Language:
- English
Similar Records
NUCLEAR REACTOR
GRAPHITE MODERATED NUCLEAR REACTOR