Toxicant distribution in the Thomas Domes.
Measurement of test article concentration distribution for light gases have been made in the Thomas Dome inhalation chambers at Wright-Patterson Air Force Base, using propane as a test agent. The method used to analyze for inhomogeneities in test article spatial distribution deliberately varies the dome operational parameters rather than requiring extreme operational stability. The variation in test article concentration is analyzed by regression to determine which operational parameters most influence the test agent distribution. Unaccounted concentration variability is assumed to be the inherent spatial variation of the test article in the dome. The propane studies indicated that the spatial variation within the dome was 6.4% of the mean and that room air temperature at the top of the dome, propane analyzer baseline stability, and dome pressure were (listed in order of decreasing importance) the variables influencing the test article distribution.
Northrop Services Inc. THRU, Dayton, Ohio 45431.
R L
RL
Carpenter
E C
EC
Kimmel
C D
CD
Flemming
C R
CR
Doarn
D000399:Air Pressure; D004781:Environmental Exposure; D004784:Environmental Monitoring / Q000295:instrumentation; D005740:Gases / Q000009:adverse effects*; D006838:Hydrocarbons / Q000032:analysis; D009820:Ohio; D011407:Propane / Q000032:analysis
D005740:Gases; D006838:Hydrocarbons; D011407:Propane