Fwd: EVA prep status for various systems

Sent from my iPad

Begin forwarded message:

From: "Moon, Larry J. (JSC-EA411)" <larry.j.moon@nasa.gov>
Date: December 20, 2013 4:26:50 PM CST
To: "Moon, Larry J. (JSC-EA411)" <larry.j.moon@nasa.gov>
Subject: EVA prep status for various systems

 

 

New Status:

Extravehicular Activity (EVA) preparation: Flight Engineer (FE)-3 Hopkins, FE-5 Mastracchio, and FE-6 Wakata performed a final tool gather and audit needed for tomorrow's planned EVA. The crew also reviewed procedures associated with the Ammonia decontamination protocol, EVA timelines, and a briefing package for Long Duration Tie Down Tether (LDTDT) configuration.  EVA #24 hatch open is planned for  ~6:10 am on Saturday, December 21^st

 

Robotics Onboard Trainer (ROBOT) Session 2:  Wakata completed a 2nd session on this simulator to gain proficiency in Space Station Remote Manipulator System (SSRMS) Operations associated with the ETCS Loop A Pump Module removal and replacement. 

 

Node 1 (N1) Isolation Jumper Removal: Hopkins removed the N1 isolation jumper from N1 RS1 Secondary Power Distribution Assembly (SPDA). This activity allowed recovery of power bus Z14B if there was a DC to DC Converter Unit (DDCU) S04B or other upstream power failures.

 

Mobile Servicing System (MSS) Operations: Robotics Ground Controllers powered up the MSS and walked the Space Station Remote Manipulator System (SSRMS) off the Node 2 Power Data Grapple Fixture (PDGF) onto Mobile Base System (MBS) PDGF1 and configured it for the Mobile Transporter (MT) translation. They then translated the MT from Worksite 4 (WS4) to WS2. Finally, they maneuvered the SSRMS into position for the start of tomorrow's EVA and configured the SSRMS, the Special Purpose Dexterous Manipulator (SPDM) and the MBS Payload and On-orbit Replaceable Unit (ORU) Accommodation (POA) as required to support EVAs to remove and replace the Loop A Coolant Pump Module.

 

External Thermal Control System (ETCS) Loop A Depress: Flight Controllers reduced the ETCS Loop A pressure to 180 psi  to help Quick Disconnect (QD) manipulation during the upcoming EVA.