Lab Carbon Dioxide Removal Assembly (CDRA) Maintenance: The adsorbent material (Zeolite) inside the CDRA beds breaks down over time and creates dust. This dust eventually reduces airflow through the beds to the point where CDRA can no longer operate. The Node 3 CDRA has newer generation beds that can be disassembled and serviced on orbit. The Lab CDRA, however, still has older generation beds that cannot be serviced on orbit and are near end of life. Today, the crew removed Lab CDRA from the rack, and disassembled it by removing all of the valves and ducting to access the beds. During the removal of the CDRA from the rack, the original power cable (P12) that connects the ASVs to the Remote Power Control Module (RPCM) was left mated in one location and the cable was severed. Teams are looking into the issue. The crew also removed the old beds from Lab CDRA. Lab CDRA will be left in this configuration overnight. Tomorrow, the crew will replace the beds with the newer generation beds, like those in Node 3 CDRA.

Extravehicular Mobility Unit (EMU) Suit Maintenance: The crew performed routine maintenance tasks on EMU 3003 and EMU 3010 including a loop scrub, a post-loop scrub water sample, suit and ion filter iodination and an EMU conductivity test.

Rodent Research Status Check: This morning, the crew conducted a conference with ground teams then collected necessary equipment for tomorrow’s Habitat Restocking activities. The Tissue Regeneration-Bone Defect (RR-4) studies what prevents vertebrates such as rodents and humans from regrowing lost bone and tissue, and how the microgravity extraterrestrial condition impacts the process. Results could lead to tissue regeneration efforts in space and a better understanding of limitations of limb regrowth at wound sites.

Microgravity Expanded Stem Cells (MESC) Microscope Operations: The crew removed a BioCell from the Space Automated Bioproduct Laboratory-2 (SABL2) and placed it on the microscope stage configured outside the Microgravity Science Glovebox (MSG). The crew worked with ground specialist to image areas of the BioCell plate. Following the focused imaging, the crew reinserted the BioCell back into the SABL. MESC will aid researches determine the efficiency of using a microgravity environment to accelerate expansion (replication) of stem cells for use in terrestrial clinical trials for treatment of disease.

Mobile Servicing System (MSS) Operations: Overnight, the Robotics Ground Controllers maneuvered the Space Station Remote Manipulator System (SSRMS) and Special Purpose Dexterous Manipulator (SPDM) to stow the Optical PAyload for Lasercomm Science (OPALS) on the SPDM Enhanced Orbital Replacement Unit (ORU) Temporary Platform (EOTP). They then handed the Space Test Program – Houston 5 (STP-H5) payload from SPDM Arm 2 to Arm 1. This was done to switch from having Orbital Replaceable Unit (ORU) Tool Changeout Mechanism 2 (OTCM2) providing keep alive power to the STP-H5 to having OTCM1 grasping the STP-H5 Flight Releasable Attachment Mechanism (FRAM) so that the STP-H5 could be installed on EXpedite the PRocessing of Experiments to Space Station (EXPRESS) Logistics Carrier 1 (ELC1). After the STP-H5 had been installed, the SSRMS and SPDM were maneuvered to a Mobile Transporter (MT) translation configuration. MSS performance was nominal.

Space Test Program – Houston 5 (STP-H5) Activation: The STP-H5 payload was installed on ELC-1 and successfully activated, one day earlier than originally planned. Initial data indicates that the STP-H5 equipment is healthy. Activation of individual experiment packages is ongoing. STP-H5 is an EXpedite PRocessing of Experiments to Space Station (EXPRESS) Pallet Adapter Flight Releasable Attachment Mechanism (ExPA-FRAM) based payload consisting of 13 individual experiments ranging from technology demonstrations to space and terrestrial weather measuring and monitoring. The experiments are provided and operated by the Department of Defense (DoD) and NASA agencies.

Today’s Planned Activities

All activities were completed unless otherwise noted.

BIOPLENKA. Removal of Samples from the Thermostat, fixation of Constanta cassette No.1-2 biofilm.

MICROVIR. Removal of Cassette-M No.2-3 and No.2-4 from ТБУ-В No.04 and setup on interior panel. Photography

Virus Definition File Update on Auxiliary Computer System (ВКС) Laptops

MICROVIR. Photography of upper cell content. Squeezing out and photography of Cassette-M No.№2-3, No.2-4 bottom cells. Setup in Cryogem-03 at +37 deg C

Rodent Research Water Box and Light Check

COLUMBUS Bay 4 clean-up

ENERGY Big Picture Words Reading

Verification of ИП-1 Flow Indicator Position

Extravehicular Mobility Unit (EMU) Cooling Loop Maintenance Scrub Initiation

Carbon Dioxide Removal Assembly (CDRA) Troubleshooting Cable Deconfiguration

MICROVIR. Glovebox-S Closeout Ops

COSMOCARD. Closeout Ops

MICROVIR. Photography of Cassette-M lower cells No.2-1, No.2-2 and stowage in ТБУ-В No.04 at +4°С

Habitability Narrated Task Video Setup – Subject

ENERGY Equipment Pre-gather

Rodent Research Gather 1

Habitability Narrated Task Video End – Subject

MICROVIR. Photography of bottom cells

Microscope Hardware Unstow

Extravehicular Mobility Unit (EMU) Post Scrub Cooling Loop Water (H2O) Sample

Scheduled monthly maintenance of Central Post Laptop. Laptop Log-File Downlink

Microgravity Expanded Stem Cells Microscope Ops

Extravehicular Mobility Unit (EMU) Cooling Loop Maintenance Iodination

СКПФ1, СКПФ2 Dust Filter Replacement and MRM1 ГЖТ Cleaning

Lab Carbon Dioxide Removal Assembly (CDRA) Removal for Dual Bed Replacement

MICROVIR. Photography of bottom cells

Microscope Hardware Temporary Stowage

BIOPLENKA. Removal of Samples from the Thermostat, fixation of Constanta cassette No.1-3 biofilm.

EVA Extravehicular Mobility Unit (EMU) Cooling Loop Scrub Deconfiguration

СОЖ maintenance

IMS Update

APEX-04 Petri Plate Photo

Extravehicular Mobility Unit (EMU) Conductivity Test

Photo/TV JEM Camcorder to SSC

MICROVIR. Photography of bottom cells

Photo/TV JEM MPEG Activation

Carbon Dioxide Removal Assembly (CDRA) Component Removal

CONTENT. Experiment Ops

Bringing ODF up to date using Progress 435 delivered files

Extravehicular Mobility Unit (EMU) Swap

Battery Stowage Assembly (BSA) Operation Initiation

MICROVIR. Photography of cell condition. Start Video.

Replacement of ПФ1, ПФ2 Dust Filters and Cleaning В1, B2 Fan Screens in MRM2

Lab Carbon Dioxide Removal Assembly (CDRA) Bed 201 and 202 Removal

Onboard Training (OBT) Dragon Debrief Conference

Photo/TV JEM Mpeg Deactivation

Stow Syringes used in H2O Conductivity Test

MICROVIR. Photography of cell condition. Terminate Video. See note 8

Completed Task List Items

None

Ground Activities

All activities were completed unless otherwise noted.

Capacity Test for Battery 1A2

MT Translation from WS7 to WS6

Three-Day Look Ahead:

Wednesday, 03/01: CDRA R&R, FROST-2, J-Microbe Install, J-Lan Monitor Install, EVA Tether Inspect

Thursday, 03/02: CDRA R&R, EVA Loop Scrub/H2O Conductivity Test, EMU Swap, PM3 H/W Gather, N3 Endcone Cleanout

Friday, 03/038: Node 2 Power Cable (HMU 220) Rerouting, PMA3 Ingress, ESA Energy, Node 3 IMV Valve Scavenge

QUICK ISS Status – Environmental Control Group: