Visibility Modeling in NO2 Vapors in a Titan II Missile Silo during A N2O4 Oxidizer Spill,
TRW INC OGDEN UT
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The mercury lamp illumination available in the launch duct of a Titan II launch complex was measured at strategic locations at two facilities. The transmittance for mercury vapor light in NO2 vapor at 5461A was determined from the literature. Assuming perfect mixing in the launch duct, a mass balance was derived which allowed the calculation of the NO2 concentration as a function of time following the initiation of a leak. The absorbance of light as a function of NO2 vapors was calculated using the Bougert-Beer law. It was calculated that the light available for hazard mitigation would be similar to that of an overcast, moonless night less than 5 minutes after initiating a leak as small as one gallon per minute.