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ISS On-Orbit Status Report

ISS Daily Summary Report – 5/22/2020

Payloads

Astrobee: The crew powered off the Astrobee hardware that was used for the previous day’s Robo-Pro Challenge checkout. 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.

Systems

Moderate Temperature Loop (MTL) Pump Package Assembly (PPA) Remove & Replace (R&R): Today, the crew performed an R&R of the Node 2 MTL PPA. This PPA experienced transient failures first seen in October 2019 with a recurrence in March 2020. Since March, the frequency of hydraulic events increased indicating the PPA was deteriorating. The issue appeared to be internal to the Pump/Fan Motor Controller (PFMC) which could not be replaced individually. With the PFMC being internal to the PPA, the entire PPA required replacement to resolve the issue. The MTL PPA is responsible for providing coolant pumping, gas removal and coolant filtration in the USOS segment and consists of a pump assembly, gas trap and filter assembly.

Regenerative Environmental Control and Life Support System (ECLSS) Operations: Today the crew performed a drain of the Waste Hygiene Compartment (WHC) Recycle Tank to an empty ЕДВ-У. Once the Recycle Tank drain was complete, the crew performed a visual check of the Recycle Tank quantity indicator to verify it was indicating empty. The crew then reconfigured the Recycle Tank valves to the “Fill” configuration and transferred the contents of ЕДВ-У serial# 1304 to the Urine Processing Assembly (UPA) Waste Water Storage Tank (WSTA). Finally, the crew configured the UPA drain/fill valves to “process” so the pre-treated urine can be processed by the UPA.

Completed Task List Activities:

  • PCS Relocate – A/L to Cupola
  • PCS Relocate – JEM to LAB

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

  • SDMS Recording During БД-2 Testing
  • UPA Recycle Tank Drain/Fill Ground Support
  • C2V2 Activation and Backup KCU Activation in prep for DM-2
  • OGA to standby in support of Elektron activation
  • DDCU Reconfig and Powerdown/up for Node 2 MTL Pump R&R
  • Safing/Safing Removal for Node 2 MTL Pump R&R
  • Node 2 MTL Deactivation/Activation in support of Node 2 MTL PPA R&R

Look Ahead Plan

Saturday, 5/23 (GMT 144)
Payloads:

  • Off Duty

Systems:

  • Off Duty

Sunday, 5/24 (GMT 145)
Payloads:

  • Off Duty

Systems:

  • Off Duty

Monday, 5/25 (GMT 146)
Payloads:

  • No Payload activities

Systems:

  • HTV9 Capture/Berthing

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

  • Replacement of Agat-2 audio/video system hard drives with psychological support materials for the crew
  • Regenerative Environmental Control and Life Support System (ECLSS) Recycle Tank Drain & Fill
  • TV conference in preparation for Chess Match on June 9, 2020 (Ku + S-band)
  • Countermeasures System (CMS) Advanced Resistive Exercise Device (ARED) Cylinder Flywheel Evacuation
  • ISS Crew and ГОГУ (RSA Flight Control Team) weekly conference
  • Replacement of Agat-2 audio/video system monitor and test checkout
  • Node 2 Pump Package Assembly (PPA) Hardware Gather
  • Regenerative Environmental Control and Life Support System (RGN) Wastewater Storage Tank Assembly (WSTA) Fills
  • Environmental Health System (EHS) – Formaldehyde Monitoring Kit (FMK) Stow Operation
  • JPM Window Shutter Close
  • Assembly of water and condensate separator pump [НС-КВ] and filling (separation) of ЕДВ-СВ or ЕДВ [КОВ] for Elektron VM
  • HTV Capture Review
  • Inventory audit of Maintenance and Repair equipment
  • Overlay Camera Calibration
  • Astrobee Off
  • In-Flight Maintenance (IFM) Node 2 Pump Package Assembly (PPA) Thermal Expansion Bag Connection & Removal
  • Node 2 Camcorder Setup & Deactivation
  • In-Flight Maintenance (IFM) Node 2 Pump Package Assembly (PPA) Gas Trap Plug Removal
  • Node 2 Moderate Temperature Loop (MTL) Pump Package Assembly (PPA) Removal
  • In-Flight Maintenance (IFM) Node 2 Pump Package Assembly (PPA) Gas Trap and Fine Filter Swap
  • Vacuum cleaning ventilation grilles on FGB interior panels (201, 301, 401)
  • Setting up video equipment to film БД-2 exercise
  • БД-2 Treadmill Test (Day 3 Exercise)
  • Node 2 Moderate Temperature Loop (MTL) Pump Package Assembly (PPA) Installation
  • Vacuum cleaning of ВТ7 screens on ГЖТ4 behind FGB panel 108
  • Disconnect video equipment used to capture БД-2 exercise and downlink files
  • Vacuum cleaning dust collector ПC1, ПС2 filter cartridges in FGB (panels 203, 403)
  • Node 2 Audio Terminal Unit (ATU) Reconfiguration