| 摘要 |
PROBLEM TO BE SOLVED: To prevent a radioactive gas from being sent into a room and prevent the concentration of carbon dioxide in the room from increasing.SOLUTION: A ventilation system comprises: a room 2 surrounded by a wall, a ceiling, and a floor; a filter part 3A provided outside the room 2 to block passage of a radioactive gas; an air blower 3C that passes air through the inside of the filter part 3A; an air supply pipe 3B that makes the downstream side of the filter part 3A communicate with the room 2; an opening/closing adjustment valve 3D provided in the air supply pipe 3B to open/close the air supply pipe 3B; a carbon dioxide detection means 5 that detects the concentration of carbon dioxide in the room 2; and a control means 8 that controls the amount of air supplied by the air blower 3C or the opening/closing adjustment valve 3D so that the concentration of carbon dioxide detected by the carbon dioxide detection means 5 is equal to or lower than a predetermined threshold value.SELECTED DRAWING: Figure 1 |
