Service Module thermal control system must be fixed to allow EVA to proceed

Service Module thermal control system must be fixed to allow EVA to proceed

(seems like a relatively straightforward R&R, I hope we can confirm the fix
quickly)

Any more details about crew/MCC discussion of this problem and its
resolution??



NASA: Station Status Report 25 March 2005

"Early today, a thermal control loop panel in Zvezda that provides cooling
to the Pirs airlock failed, and its backup system was activated to provide
the necessary cooling. There are two circulating pumps associated with
each panel. Both pump panels are needed to provide adequate backup
capability for the spacewalk. The crew will troubleshoot the pump panel
early Saturday, and replace one or both of the pumps in the degraded panel."

courtesy www.nasawatch.com:

NASA Space Station On-Orbit Status 26 March 2005

"In a late change to their schedule, Sharipov and Chiao today replaced the
#1 pump panel (4SPN1) of the Service Module (SM)'s internal cooling loop 2
(KOV-2). The panel failed early yesterday morning, causing a switchover to
pump panel #2. Rather than isolating the failed pump, the entire 4SPN1 panel
was replaced, to mitigate any contingencies from the thermal loop during
EVA-13."