Patent ID: 8896454

Claim:
An apparatus for examining a contamination state of a body surface of a worker having worked in a radiation controlled zone, comprising: a front and back surface monitoring unit that detects contamination of a front or back surface of the worker using a first sensor unit facing the front or back surface of the worker and outputs a first detection signal indicating a contamination state of the front or back surface of the worker, a side surface monitoring unit that detects contamination of one side surface of the worker using a second sensor unit facing the one side surface of the body of the worker and outputs a second detection signal and a third detection signal; and a central processing unit that performs contamination examination based on the outputted first, second and third detection signals, wherein the side surface monitoring unit includes an armpit monitoring unit for detecting contamination of both sides of an armpit of the worker, the armpit monitoring unit including an arm's inner side surface monitoring unit that detects contamination of an inner side surface of an arm of the worker using a third sensor unit facing the arm's inner side surface and outputs the second detection signal indicating a contamination state of the arm's inner side surface ranging from a palm on the arm's inner side surface to an upper side of the armpit, and a trunk monitoring unit that detects contamination of a side surface of a trunk of the worker using a fourth sensor unit facing the trunk's side surface and outputs the third detection signal indicating a contamination state of the trunk's side surface ranging from a waist of the worker to the upper side of the armpit, and a lift driving unit that moves up and down the armpit monitoring unit, and wherein the central processing unit includes a lift control unit that controls the lift driving unit such that the armpit monitoring unit moves up when detecting contamination of the front or back surface of the worker, and a contamination examining unit that detects the presence of contamination of the front or back surface and the armpit's both sides based on the first detection signal output by the front and back surface monitoring unit, on the third detection signal output by the trunk monitoring unit when the trunk monitoring unit moves up, and on the second detection signal output by the arm's inner side surface monitoring unit when moving up together with the trunk monitoring unit.