Criteria and Test Methods for Certifying Air-Purifying Respirator Cartridges and Canisters Against Radioiodine.

摘要

A project has been completed which provides experimental data and recommendations for establishing a standard test procedure and acceptance criteria for air-purifying respirator cartridges and canisters used for airborne radioiodine. Previous experimental work with methyl iodide vapor was extended to generate elemental iodine and measure its removal by charcoals. A special apparatus was constructed and used to simultaneously measure penetrations of radioiodine and normal iodine vapor species through beds of various charcoals. Normal methyl iodide (I-127) was selected as the most representative vapor species for testing and its limitations were identified. Effects of testing and use conditions (bed depth, contact time, concentration, relative humidity, temperature, flowrate, and flow cycling) were studied to identify testing requirements.