Ecology and thermal inactivation of microbes in and on interplanetary space vehicle components

Author:: Wimsatt, J. C.
Published:: Jan 1, 1973.
Physical Description:: 1 electronic document

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Summary:

An experimental sterilization facility was developed to simulate conditions that will be encountered during terminal sterilization of space vehicles. The system consists of a temperature controlled oven with a nitrogen gas stream containing a known concentration of water. Moisture analyzers are utilized to monitor the gas flowing over spore samples contained in the oven. In its original configuration, no provision was made for the control of water vapor during the sterilization cycle. Because moisture profoundly influences the thermal inactivation of bacterial spores, an upper limit for the moisture content in the gas used to sterilize the space vehicle was established (25% RH at 0 C STP). Accordingly, a controller was developed and installed to provide these conditions in the experimental sterilization facility.

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BIOSCIENCES

Collection:

NASA Technical Reports Server (NTRS) Collection.

Note:

Document ID: 19730010395.
Accession ID: 73N19122.
NASA-CR-131103.
QPR-30.

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