Fuel tube barrier gauge

Details Fuel tube barrier gauge Fuel tube barrier gauge

G - Physics

01

B

358/12

G01B 15/02 (2006.01)

Patent

CA 1245376

FUEL TUBE BARRIER GAUGE Abstract of the Disclosure An apparatus using X-ray fluorescence for gauging the thickness of a zirconium barrier layer on the interior surface of a zirconium alloy nuclear fuel tube is disclosed. A gamma radiation source coaxially positioned in the tube emits gamma rays which excite K-alpha and K-beta Sn X-rays in the zirconium alloy substrate. Fluorescent X-rays passing back through the barrier layer are detected by an X-ray detector coaxially positioned in the tube. Attenuation of the exciting gamma rays and the fluorescent X-rays by the barrier layer is used to determine barrier layer thickness.

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