Patent ID: 9268034
Filing Date: 2016-02-23
CPC Classification: G01T,G21C,Y02E

Claim Text:
1. A nuclear reactor fuel integrity monitor comprising: a γ-ray detector which detects γ-ray of a specific radionuclide of a subject measurement medium of a nuclear reactor; a sample container which retains the subject measurement medium therein and surrounds the circumference of the γ-ray detector; a valve that controls an amount of the subject measurement medium to allow to flow into the sample container; a measurement control device which controls the valve so that a predetermined amount of the subject measurement medium is introduced into the sample container, and calculates a concentration of the specific radionuclide from γ-ray data per each unit time detected by the γ-ray detector and a volume of the subject measurement medium introduced into the sample container; and an analysis device which detects a concentration of hydrogen or oxygen included in the subject measurement medium; and a volume control tank which separates a nuclear reactor coolant into a liquid phase and a gas phase, wherein the sample container is connected to the volume control tank via a gas phase sampling point and obtains the subject measurement medium from the gas phase in the volume control tank.