DEVICE FOR REFUELLING A PRESSURIZED NUCLEAR REACTOR DURING THE OPERATION
A nuclear reactor cooled by a pressurized fluid is charged by a refueling machine comprising a pressure container with an outlet that may be coupled with each of the charging holes, which are in alignment with the horizontal fuel channels in the core of the reactor. Between the biological shielding and the core an air gap is provided forming a header for the coolant circulating in the channels, while a horizontal charging chute connects the charging hole with the corresponding channel. A plug normally closes the charging hole and is extended at its inner end by a push-rod adapted to push the fuel elements during the charging operation into the channel. The charging machine is first coupled with the charging hole; the plug is then coupled with a bar supported by a carriage movable along the channel axis; the plug may then be withdrawn into the machine to a position behind a rotatable cylindrical magazine, having cells containing fuel elements adapted to be placed successively in alignment with the push-bar of the plug, which then pushes the element into the channel. (NPO)
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-16-028497
- OSTI ID:
- 4793437
- Report Number(s):
- FR 1253820
- Country of Publication:
- France
- Language:
- English
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