Criteria and test methods for certifying air-purifying respirator cartridges and canisters against radioiodine. Progress report, October 1, 1978-September 30, 1982

Technical Report · Mon Aug 01 04:00:00 EDT 1983

OSTI ID:5518708

Wood, G O; Valdez, F O; Gutschick, V

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-27) 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. Temperature and simulated breathing flow cycling were shown to have much more significance than was previously realized. Recommendations for testing and approval include considering the effects of all these parameters. An apparatus designed and built for testing has been delivered to the National Institute for Occupational Safety and Health. In one related study the desorption of triethylenediamine (TEDA), a charcoal impregnant for organic iodide removal, was found to be insignificant at normal canister use conditions. 17 references, 28 figures, 21 tables.

• Research Organization: Los Alamos National Lab., NM (USA)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 5518708
• Report Number(s): NUREG/CR-3403; LA-9827-PR; ON: DE84002281
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420600 -- Engineering-- Safety Engineering-- (-1987)
560161 -- Radionuclide Effects
Kinetics
& Toxicology-- Man
570000* -- Health & Safety
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
99 GENERAL AND MISCELLANEOUS
ACTIVATED CARBON
ADSORBENTS
ADSORPTION
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CARBON
DATA
DAYS LIVING RADIOISOTOPES
ELEMENTS
EXPERIMENTAL DATA
INFORMATION
INTERMEDIATE MASS NUCLEI
IODINE 131
IODINE ISOTOPES
ISOTOPES
NONMETALS
NUCLEI
NUMERICAL DATA
ODD-EVEN NUCLEI
RADIOISOTOPES
RECOMMENDATIONS
RESPIRATORS
SORPTION
TESTING