Nuclear radiation actuated valve

Details Nuclear radiation actuated valve Nuclear radiation actuated valve

G - Physics

21

C

359/50

G21C 15/04 (2006.01) F16K 31/00 (2006.01) G21C 3/322 (2006.01)

Patent

CA 1192680

NUCLEAR RADIAT1ON ACTUATED VALVE ABSTRACT OF THE DISCLOSURE A nuclear radiation actuated valve for a nuclear reactor. The valve has a valve first part (such as a valve rod with piston) and a valve second part (such as a valve tube surrounding the valve rod, with the valve tube having side slots surrounding the piston). Both valve parts have known nuclear radiation swelling characteristics. The valve's first part is positioned to receive nuclear radiation from the nuclear reactor's fuel region. The valve's second part is positioned so that its nuclear radiation induced swelling is dif- ferent from that of the valve's first part. The valve's second part also is positioned so that the valve's first and second parts create a valve orifice which changes in size due to the different nuclear radiation caused swelling of the valve's first part compared to the valve's second part. The valve may be used in a nuclear reactor's core coolant system.

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