Accession Number : ADA136935

Title :   Temporal and Spatial Gaseous HCl Concentrations in the Near Field STS Postlaunch Environment, Kennedy Space Center, Florida.

Descriptive Note : Final technical rept. for period ending Aug 83,


Personal Author(s) : Christensen,W D ; Langwell,J D ; Barnes,E S

PDF Url : ADA136935

Report Date : Sep 1983

Pagination or Media Count : 17

Abstract : This report presents the results of hydrochloric acid (HC1) measurements accomplished following the launch of Space Shuttles 5, 6 and 7 from launch complex 39, pad A, at the Kennedy Space Center (KSC). The objective of the sampling program was to evaluate the potential for revolatilization of HC1 deposited in the vicinity of the launch complex and to determine the time history of the event if it occurred. The data collected during the program demonstrate that HC1 can persist for several hours following Shuttle launch and that there is potential for isolated higher levels of HC1 to occur. The data also provide insight to the magnitude of HC1 concentration variability which can be influenced by meteorological, topographical and operational parameters. The relative importance of these parameters can be shown to have a major influence on HC1 concentrations and will likely be superimposed on any revolatilization or concentration decay curve. The importance of even low level HC1 concentrations on pad reentry personnel is discussed however, the potential effect on electronic equipment and circuitry remains to be addressed. (Author)

Descriptors :   *Hydrochloric acid, *Gases, *Contamination, *Environmental impact, *Industrial medicine, Industrial hygiene, Health physics, Measurement, Concentration(Chemistry), Sampling, Volatility, Decay, Personnel, Launching, Space shuttles

Subject Categories : Inorganic Chemistry
      Civil Engineering
      Environmental Health and Safety

Distribution Statement : APPROVED FOR PUBLIC RELEASE