IMPROVEMENTS RELATING TO GAS COOLED NUCLEAR REACTORS
In order to avoid thermal stresses in the pressure vessel of a gas cooled nuclear reactor, an auxiliary wall is arranged between the pressure vessel wall and the reactor core that is enclosed by it. In the interspace bounded by this auxiliary wall and the inner surface of the pressure vessel wall, cooling gas circulates. Preferably the communication of this auxiliary circulating zone with the main coolant circulation takes place beneath the top of the reactor core. This cooling gas may be delivered, from the coolant ducts feeding the reactor entrances for the main coolant circulation, by a duct provided with throttling means. The said auxiliary circulation in this interspace may be made devious by a set of baffles, imposing a limitation on the flow. In another form of this auxiliary cooling system, the circulation within said interspace takes place between two distribution pipings arranged in the lower and the upper parts of this interspace respectively, this distribution piping being connected outside the pressure vessel via a heat exchanger. (NPO)
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-15-027142
- OSTI ID:
- 4843873
- Report Number(s):
- FR 1212099
- Country of Publication:
- France
- Language:
- English
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