IMPROVEMENTS RELATING TO GRAPHITE MODERATOR STRUCTURES FOR NUCLEAR REACTORS
In a graphite moderator structure, comprising layers of vertically positioned graphite blocks of square cross section and provided with axial cylindrical coolant channels, the ends of the blocks in adjacent layers are separated by a layer of square graphite tiles in which the blocks are fitted. The blocks are provided at their upper and lower ends with keys or protruding portions extending in one direction and, at about the same level, with keyways or channelled portions extending in a direction at right angles thereto; the arrangement is such that the keys and keyways at the lower end are in directions perpendicular to those at the upper end of each block. The graphite tiles are provided with keys and keyways along the opposite endges of both the top and bottom faces. The width of the keys and ksyways of the tiles is one half the width of those formed on the graphite blocks, so that always two keys of adjacent tiles slide parallelly in the same keyway of a graphite h sector of a circle to provide at the meeting corners of any four tiles a cylindrical opening for axial alignment with the coolant channel in the graphite blocks. (NPO)
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-15-032951
- OSTI ID:
- 4837285
- Report Number(s):
- FR 1209950
- Country of Publication:
- France
- Language:
- English
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