Patent ID: 7973285

Claim:
An apparatus for detecting a leakage of heavy water in a nuclear reactor system by using a laser absorption spectroscopy (LAS), the apparatus comprising: a diode laser generating a laser beam and injecting the generated laser beam into a test sample placed in a light absorption cell; the light absorption cell accommodating the test sample therein; a vacuum pump adjusting a degree of vacuum of the light absorption cell; a test sample introduction unit gathering an air test sample from a location with a high possibility of a leakage of heavy water or a light water test sample from a secondary side and transferring it to the light absorption cell; an optical detector detecting a laser beam which has passed through the light absorption cell; and a microprocessor controlling the operation of the diode laser, the vacuum pump, the test sample introduction unit, and the optical detector, receiving a detect signal from the optical detector, and analyzing an absorption spectrum signal.