Patent ID: 8324579
Filing Date: 2012-12-04
Classification: G01T

Abstract:
1. An article carrying-out monitor comprising: a monitor part including a radiation detector to monitor an article to be inspected; a carrying-in conveyor that carries a tray, on which an article to be inspected is put, into the monitor part; a carrying conveyor that conveys the tray in the monitor part; and a carrying-out conveyor that carries a tray, on which an article to be inspected is put, from the monitor part in order to inspect the presence of contamination, by radioactive substances, on an article to be inspected carried out from a controlled area of a facility, in which radioactive substances are handled; wherein the detector in the monitor part includes a lower surface detector disposed below a path of conveyance of an article to be inspected, an upper surface detector disposed above the path of conveyance of an article to be inspected, a front, lower surface detector disposed forwardly of the lower surface detector, a front, upper surface detector disposed forwardly of the upper surface detector, a rear, lower surface detector disposed rearwardly of the lower surface detector, a rear, upper surface detector disposed rearwardly of the upper surface detector, a left, lower surface detector disposed leftward of the lower surface detector, a left, upper surface detector disposed leftward of the upper surface detector, a right, lower surface detector disposed rightward of the lower surface detector, and a right, upper surface detector disposed rightward of the upper surface detector; and wherein the monitor part detects the presence of contamination on a lower surface of an article to be inspected on the basis of a lower surface detection signal from the lower surface detector, detects the presence of contamination on an upper surface of an article to be inspected on the basis of an upper surface detection signal from the upper surface detector, detects the presence of contamination on a front surface of an article to be inspected on the basis of a front, lower surface detection signal from the front, lower surface detector and a front, upper surface detection signal from the front, upper surface detector, detects the presence of contamination on a rear surface of an article to be inspected on the basis of a rear, lower surface detection signal from the rear, lower surface detector and a rear, upper surface detection signal from the rear, upper surface detector, detects the presence of contamination on a left surface of an article to be inspected on the basis of a left, lower surface detection signal from the left, lower surface detector and a left, upper surface detection signal from the left, upper surface detector, and detects the presence of contamination on a right surface of an article to be inspected on the basis of a right, lower surface detection signal from the right, lower surface detector and a right, upper surface detection signal from the right, upper surface detector to perform monitoring.