NoUFO From Germany, joined Apr 2001, 7989 posts, RR: 11 Posted (2 years 3 months 2 weeks 5 days 23 hours ago) and read 3311 times:
Station's power relies on ammonia coolant, and a couple of hours ago (Thursday May 9) the crew found that the ammonia of one cooling loop was leaking into space. This could lead to a shutdown of said cooling loop in about 48 hours.
jollo From Italy, joined Aug 2011, 267 posts, RR: 0
Reply 3, posted (2 years 3 months 2 weeks 5 days 7 hours ago) and read 3048 times:
Quoting NoUFO (Reply 2): EVA will be tomorrow (Saturday) by C. Cassidy and T. Marshburn.
EVA is time-critical because if the pressure drops too low the loop will auto-shut down, and the residual pressure may not be enough to produce the current stream of ammonia flakes, a simple and effective visual aid to pinpoint the leak. IIRC the latest such leak (late 2012) couldn't be found for sure.