| 摘要 |
PROBLEM TO BE SOLVED: To provide a chemical agent-polluted area isolating method and its device capable of isolating an area polluted by a chemical agent and executing the work in safety inside of the isolated area. SOLUTION: The chemical agent-polluted area is covered by a sealed construction 1, a plurality of exhaust ports 3 having a plurality of intake ports 2 and closure valves 6 are laterally arranged on opposite side walls 1a, 1b of the sealed construction 1, an activated charcoal filter 7 and a chemical agent detector 9 of a first stage, and an activated charcoal filter 8 and an exhauster 5 of a second stage are mounted at a downstream side of the plurality of exhaust ports 3. In a case when a concentration of chemical agent measured by the chemical agent detector 9 is over a permitted concentration, the exhauster 5 is stopped and the closure valves 6 are closed. COPYRIGHT: (C)2005,JPO&NCIPI
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