External (EXT) Multiplexer/Demultiplexer (MDM)-1 R&R Extravehicular Activity (EVA): With IV support from Thomas Pesquet, today Peggy Whitson (EV1) and Jack Fischer (EV2) performed a 2 hour 46 minute EVA to Remove & Replace (R&R) the EXT MDM-1 that failed on Saturday, May 20th. While Whitson performed the EXT MDM R&R, Fischer installed the Lab Nadir External Wireless Communications (EWC) Antennas that were deferred from the last EVA. Solar Array Battery 3A1 Temperatures On 5/22/17, Battery 3A1 average temperatures peaked above 25C for three concurrent orbits due to high solar beta, with a maximum average temperature peak of 25.6C. Per Flight Rule, ground controllers terminated the use of the battery string by turning the Battery Charge Discharge Unit (BCDU) 3A1 converter off and commanding the Fault Isolator (FI) open. There is no impact to downstream loads in this configuration Todays Planned Activities All activities were completed unless otherwise noted. External Wireless EVA Inhibit ISS HAM Radio Power Down EVA COTS UHF Communication Unit (CUCU) Verify off USOS Window Shutter Close Extravehicular Activity (EVA) In-Suit Light Exercise (ISLE) Preparation Comm configuration for EVA Regeneration of Micropurification Unit () 2 Cartridge (start) Recharging Soyuz 733 Samsung PC Battery ISS Crew departure preparation Update BRI Configuration File to Version 6.3 Recharging Soyuz 735 Samsung PC Battery Extravehicular Mobility Unit (EMU) Purge LBNP Training (PRELIMINARY) Extravehicular Mobility Unit (EMU) In-Suit Light Exercise (ISLE) Prebreathe Soyuz 733 IRIDIUM phone recharge, setup, start charge (1_2_224_1, 0.5 1017 (002857J), Soft Container (00044322R)) Soyuz 733 Recharging IRIDIUM Phone battery charge status Prebreathe in EMU - water sampling to drink bags Soyuz 733 IRIDIUM phone recharge, terminate charge Equipment Stowage under Soyuz 733 center seat Note 7 Sampling condensate water  before -2 Gas-liquid mixture filter () to drink bags, end Crewlock Depress - water sampling to Russian drink bags Crewlock Egress Terminate Soyuz 735 Samsung PC Battery Charge (as necessary) Replace Failed EXT MDM Install Lab EWC Antennas KORREKTSIYA. Logging Liquid and Food (Medicine) Intake Collecting condensate water samples  up to -2 , equipment setup, sampler installation Crewlock Ingress Crew Departure Prep MORZE. Psycho-physiological Evaluation: Strelau Test Crewlock Ingress Soyuz 735 IRIDIUM phone charge EVA Glove Photo Setup Crewlock Pre Repress Soyuz 735 IRIDIUM phone charge, terminate charge, teardown of the setup Stow: 1_2_224_1, 0.5 1017 (002857J), Soft Container (00044322R) Crewlock Repress Extra Vehicular Activity (EVA) Post-EVA Activities Collecting condensate water samples  upstream of -2 , sampler replacement Extravehicular Mobility Unit (EMU) Water Recharge Extra Vehicular Activity (EVA) Post-EVA Activities Return to nominal comm configuration after USOS EVA EVA Glove Photo Downlink Extravehicular Activity (EVA) Camera Image Downlink Photo/TV Extravehicular Activity (EVA) GoPro Downlink Photo/TV Extravehicular Activity (EVA) Camera Disassembly External Wireless Instrumentation System (EWIS) Network Control Unit (NCU) Enable MORZE. Closeout Ops KORREKTSIYA. NEUROIMMUNITET. Experiment setup Terminate Soyuz 733 Samsung PC Battery Charge (as necessary) Sampling condensate water  upstream of -2 , removing sampler, equipment disassembly OsteoOmics Saline Kit Relocate Meteor Shutter Open Completed Task List Items Veg-03 Plant Water/Photo iPad Certificate Verification Grasp Big Picture [from tomorrows timeline] Dragon Rendezvous CBT [from tomorrows timeline] Dragon Robotics review [from tomorrows timeline] Ground Activities All activities were completed unless otherwise noted. System commanding in support of EVA High Beta monitoring Three-Day Look Ahead: Wednesday, 05/24: Dragon OBT Conf, OsteoOmics, Cubesat Deployer Swap, EVA Debrief, Airlock deconfig Thursday, 05/25: Body Measures, OsteoOmics, GRASP, Dragon RoBOT OBT, OGS Sensor R&R Friday, 05/26: OBT Dragon Offset Grapple, EVA loops scrub/conductivity tests, OBT Soyuz drill, GRASP QUICK ISS Status Environmental Control Group: Component Status Elektron Off Vozdukh Manual  1 SM Air Conditioner System (SKV1) Off  2 SM Air Conditioner System (SKV2) On Carbon Dioxide Removal Assembly (CDRA) Lab Standby Carbon Dioxide Removal Assembly (CDRA) Node 3 Operate Major Constituent Analyzer (MCA) Lab Operate Major Constituent Analyzer (MCA) Node 3 Operate Oxygen Generation Assembly (OGA) Process Urine Processing Assembly (UPA) Standby Trace Contaminant Control System (TCCS) Lab Full up Trace Contaminant Control System (TCCS) Node 3 Off Read full story.