NUCLEAR REACTOR
Retaining means are described for the core structure of a reactor able to withstand earthquake shocks. The core structure, comprising a pile of layers of vertically positioned graphite blocks, each layer being separated from the succeeding layer by layers of graphite tiles keyed to the graphite blocks is held together by retaining means comprising a series of retaining belts enclosing the core structure at different levels. Each belt is composed of a plurality of links joined together at their ends by joining pins; each joining pin is fixed to the inner end of a radially extending organ having its outer end jointed at the outer corner of a triangular piece, the two inner corners thereof each being fitted to one of two adjacent pieces each having a U-shaped cross section and surrounding one of the links on three sides, without touching it. The surface of the piece corresponding to the base of the U is pressed against a vertical side face of the core structure. The fitting of the triangular pieces is effected by pins mounted therein and each sliding in a longitudinal slot provided in the side wall of the adjacent U-shaped piece. Each of the U-shaped pieces is provided with a radially extending keying bar that is movable in a slide in an outer rigid structure, which supports the keying bars for all the retaining belts. This outer structure encloses the core, leaving an interspace between it and the surface of the core and resting with its lower extremity on the core support. (NPO)
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-15-032952
- OSTI ID:
- 4823836
- Report Number(s):
- FR 1211295
- Country of Publication:
- France
- Language:
- English
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