An Experimental Study on the Rate of Aerosol Release from Containments by Using an Activable Tracer

概要

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The paper describes some results on the simulated experiment by using an activable tracer to evaluate the protective effect of a fume hood and a glove box where highly hazardous materials should be handled.It is shown that the amount of aerosol to be inhaled by a worker during a standard operation time (10min) will be in the order of 10-5 of the amount handled in case of aerosol generation and 10-9 for usual chemical procedure. This suggests, that for an example, the amount of plutonium to be handled in the hood should be limited below 10μCi for usual procedure, in order to maintain one twentieth of the MPC level in the working area. Several types of simulated accidents during aerosol generation were tested using a glove box with leak rate of 0.1 volume percent per 2 hours. Any measurable air contamination was not observed near the working area, except for a few types of accident such as a cut finger and a pin hole of the glove.
日本保健物理学会の論文