ISS Daily Summary Report – 9/25/2020


Astrobee off: Following the completion of the data downlink from the Robo-Pro rehearsal yesterday, Astrobee was powered off.  Astrobee is made up of three free-flying, cube-shaped robots which are designed to help scientists and engineers develop and test technologies for use in microgravity to assist astronauts with routine chores, and give ground controllers additional eyes and ears on the space station. The autonomous robots, powered by fans and vision-based navigation, perform crew monitoring, sampling, logistics management, and accommodate up to three investigations.

MELFI dewar clean: The crew re-installed the cleaned and dried MELFI2 stowage trays.  This helps prepare for future icebrick or science sample storage in this area.  Icebricks are used to provide thermal mass while in MELFI, and maintain temperatures via phase-change cooling for samples returning to the ground in passive stowage.  The Minus Eighty-Degree Laboratory Freezer for ISS (MELFI) is a cold storage unit that maintains experiment samples at cold temperatures (+2 deg C to -95 deg C) throughout a mission.


ISS Leak Detection Operations: On Thursday, the crew used the Ultrasonic Leak Detector (ULD) to inspect for air leaks at the JEM windows, SM Windows #1 and #12, and DC1 EV hatch window #2. Ground teams have scheduled a second isolation test over the weekend that includes 4 hours of ULD testing.

Environmental Health System (EHS) Coliform Water Sample Analysis: Today the crew completed post processing analysis of the coliform detection bags. The water samples were acquired on GMT 267 and allowed to incubate to check for the presence of Coliform bacteria. Following the incubation period, the crew visually analyzed the coliform detection bags and recorded the results. Visual confirmation must be performed within 40-48 hours of the initial sample collection.

Completed Task List Activities:

  • None

Today’s Ground Activities:
All activities are complete unless otherwise noted.

  • SSRMS EP Troubleshooting

Look Ahead Plan

Saturday, 9/26 (GMT 270)

  • No Payload Activities


  • ULD Leak Checks
  • Cygnus vehicle training
  • Crew Off Duty

Sunday, 9/27 (GMT 271)

  • No Payload Activities


  • Crew Off Duty

Monday, 9/28 (GMT 272)

  • CIR manifold bottle replace
  • EarthKAM/Node 2 setup
  • JEM camera robot prep


  • USOS Ingress
  • Galley Activation
  • WHC Activation
  • USOS Isolation Re-stow
  • NG-14 OBT 

Today’s Planned Activities:
All activities are complete unless otherwise noted.

  • ТБУ. Monitor ТБУ-В #7 Temp and Maintain Unobstructed Air Flow for ТБУ-В Inlets and Outlets
  • Urine Transfer System Backup EDV Swap
  • 62S Quick Don Mask Assembly (QDMA) fit check.
  • ISS Crew / GOGU (RS Flight Control Team) Weekly Conference
  • Quick Don Mask Assembly (QDMA) Handover for 62S Fit-Check
  • UV-ATMOSPHERE. Equipment Power Down
  • Fit Check of the Quick Don Mask Assembly (QDMA) in Soyuz 745 (62S).
  • UV-ATMOSPHERE. Closeout Operations
  • Fillin EDV from DC1 Progress #444 Rodnik Water Tank #1
  • URAGAN. [BCC] Equipment R&R.
  • Environmental Health System (EHS) – Microbial Capture Device (MCD) and Coliform Water Sample Analysis 44 +/- 4 hours post processing
  • MELFI2 Dewar Clean Part 2
  • USOS Isolation Gather
  • Hardware Prep for Isolation
  • Pack Equipment for Disposal in SM Aft Progress 448.
  • Activation of Gas Analyzer in Soyuz 745
  • Astrobee Off
  • Repress the Elektron-VM Liquid Unit (БЖ) Before Power
  • MRM1 Isolation.
  • Isolation of DC1 + Progress #444 Volume.
  • USOS Item Transfer
  • Egressing the USOS for Module Isolation and Leak Determination
  • Isolation of Modules in RS and USOS.