Method and apparatus for boron addition to primary coolant...

Details Method and apparatus for boron addition to primary coolant... Method and apparatus for boron addition to primary coolant...

G - Physics

21

C

359/38

G21C 9/00 (2006.01) G21C 7/22 (2006.01) G21D 3/04 (2006.01)

Patent

CA 1136778

ABSTRACT OF THE DISCLOSURE Pressurized boric acid is injected into the primary coolant of a water cooled nuclear reactor system to ensure sufficient shutdown reactivity in the event of an accident. The method comprises heating a molten boric acid and water solution in a storage vessel, thereby creating sufficient pressure from the steam cushion which is generated to inject the solution into the reactor coolant. When compared to known techniques for borating the primary coolant, this method has the advantage that a smaller storage vessel can be used for the solution and less power is consumed during injection.

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