IMPROVEMENTS RELATING TO NUCLEAR REACTORS
The structure of a solid moderator comprises a plurality of adjacent columns, each consisting of a series of piled blocks. Each block is provided with a vertical axial boring, and is aligned with other blocks in the column to form a reactor channel. This alignment is ensured by a system of keys and keyways which prcvents any movement of the blocks of the same column. The mutual position of adjacent columns is ensured by a system of spacing elements placed in borings or grooves provided in the blocks in several different levels of the moderator structure, the axis of these borings or grooves following two mutually perpendicular horizontal directions. Each spacing element engages in borings or grooves of two adjacent blocks of adjacent columns. The elements have a tubular shape or the form of a bar and are made of stainless steel or zirconium, as the dimensions of these materials remain essentially constant under the influence of irradiation. (NPO)
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-16-034036
- OSTI ID:
- 4776839
- Report Number(s):
- FR 1264420
- Country of Publication:
- France
- Language:
- English
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