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STS-111-ISS News



Submitted by Arthur - N1ORC

Late in the day, the Flash Evaporator System Primary B controller failed
for an as-yet unknown reason. The system has three redundant controllers,
Primary A, Primary B and Secondary, and the failure of one controller
will have no effect on mission operations. 
  
The Flash Evaporator System sprays excess supply water into the inside of
a trash-can shaped vessel that is wrapped by Freon coils. The heat being
carried in these coils causes the water to flash into vapor and be vented
overboard, disposing of excess heat and excess supply water. 

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