DEVICE FOR PREVENTING THE FORCING OUT OF THE FUEL ELEMENTS OF A HETEROGENEOUS NUCLEAR REACTOR COOLED BY A PRESSURIZED FLUID
In a gas-cooled nuclear reactor with vertical fuel element channels and upward circulation of the coolant through these channels, there is a critical coolant flow at which the fuel elements begin to be forced out of the channel. This flow depends on the number of fuel elements situated at any given moment in the channel. In order to ensure that this effect does not arise during the charge or discharge operatnnon of the reactor, a counter flow is passed through the charging tube coupled with the upper end of the fuel element channel in question so that both flows leave the charging tube by lateral openings in its lower end. The flow is thus reduced and depends on the intensity of the counter flow which is controlled in accordance with the number of fuel elements present. This counter flow also serves to cool the fuel elements during their passage out through the charging tube. (NPO)
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-16-006178
- OSTI ID:
- 4821377
- Report Number(s):
- FR 1230023
- Country of Publication:
- France
- Language:
- English
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