A GAS MASK FOR PREVENTING INFLOW OF RADIOACTIVE MATERIAL INTO THE RESPIRATORY ORGAN OF THE WORKER

摘要

The present invention relates to a gas mask for preventing inflow of a radioactive material. The objective of the present invention is to provide a gas mask which prevents a face of a radiation worker is exposed to radiation due to radioactive materials accumulated in a purifying tank, safely replaces the purifying tank in a state where the worker wears the gas mask during the radiation work within a radiation controlled area, and is placed in a gas mask storage space, in which the radioactive material exists, to prevent a contact portion of a front surface of the gas mask from being contaminated by the radioactive material, thereby securely preventing the radioactive material from being introduced into a respiratory system of the radiation work which wears the gas mask. The gas mask includes: a beta ray shielding body for preventing a face of radiation worker from being exposed to radiation; a contamination prevention cover for preventing a front surface of a gas mask to be closely attached to the face of the worker from being contaminated by radioactive material when the gas mask is stored; and a purifying tank assembly opening/closing valve for preventing air contaminated by the radioactive material from being introduced to a rear surface of a main body through a purifying tank assembly hole when the purifying tank is replaced.