CHAPTER 20 DAY IN THE LIFE: WHEN MAJOR ANOMALIES OCCUR 372 Transporter. By anticipating all of the critical decisions, and because nothing serious had happened, the team was able to actually get ahead of the planned schedule. That was half the content of the next EVA. The team in Mission Control was excited to be this far along in repairing the space station. The EVA ended after 5 hours and 28 minutes. After repress, one of the spacesuits had its water switch inadvertently flipped to the “on” position for 1 to 2 seconds, causing water to flow into the sublimator when not at vacuum. The switch is normally protected with a “guard” to prevent bumping. In this case, the guard had yet to be installed. The EVA experts were worried that the sublimator would become damaged during the next EVA, since pockets of water that would not be able to evaporate in time might cause uneven freezing after airlock depress, thereby warping or cracking the sublimator. Mission Control had the crew open the flap on the EMU to allow for dry-out. The team realized it would be impossible to tell, before the next EVA, whether the sublimator would be acceptable since water could be hidden from the crew’s view. The team quickly concluded that this suit could not be used, and had to choose from the on-board complement of modular suit components available. It was decided to resize PLSS 3011 for Mastracchio and then use a new suit sized specifically for Hopkins. This resizing had to be done before the next spacewalk. Figure 13. Expedition 38 Flight Engineer Rick Mastracchio, as seen behind part of the degraded Pump Module that was removed from the S1 truss during EVA 24. He is temporarily stowing the Pump Module by guiding it to be grasped by its grapple fixture by a robotic end effector that is housed on the Mobile Remote Servicer Base System. Sunday and Monday, Dec 22-23, 2013 The next EVA (EVA 25—the 25th increment spacewalk during the program) was originally intended to occur on Monday, December 23. However, with this additional suit resizing and given that the team had possibly reduced the number of EVAs from three to two, EVA 25 was moved to December 24. The crew and ground team slept in a little on Sunday, worked on suit resizing and changing tools, and generally preparing for EVA 25. Until that
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