Ultrasonic Background Noise Test (UBNT): The crew replaced batteries and transmitted data by closing out the Station Support Computer (SSC’s) Distributed Impact Detection System (DIDS) software and removing the UBNT hardware. UBNT detects high-frequency sounds generated by hardware on the U.S.-built portions of the ISS. Identifying sources of noise will aid in development of a leak locating system which would detect the high-pitched sound of air leaking through a pressurized wall. To detect leaks, the system would have to differentiate between harmless background sounds and a potentially dangerous air leak.
LAB Major Constituent Analyzer (MCA) Mass Spectrometer Assembly (MSA) Troubleshooting: In December 2014, the crew installed new Orbital Replacement Units ORU1, ORU2, and ORU8 in the Lab MCA. When the Lab MCA was restarted, there was no communication with ORU2. Today the crew attempted to isolate the problem to either ORU2 or the connector it mates with on the MCA drawer. The crew reported no visible damage to either side of the ORU2 connector interface. He performed resistance checks on sockets on the drawer side connector saver and found that four of the sockets tested had lower than expected resistances. To address one potential cause of this problem, the crew replaced ORU4, the Low Voltage Power Supply, and repeated the resistance check on the previously failed sockets. The resistances of the sockets did not change so the original ORU4 was reinstalled. The rack has been closed out with ORU2 and ORU8 uninstalled. Teams are meeting to discuss the forward plan. The Node 3 MCA is operating nominally.
Remote Power Controller RPCM LA2A3B-G RPC 2 Trip: This morning the RPC that provides power to the Fluids Integrated Rack (FIR) Primary Power feed tripped. At the time of the trip, ground teams were activating FIR for science operations. The crew reported no smoke odor and Compound Specific Analyzer Combustion Products (CSA-CP) readings were zero. A current spike high enough to trigger an RPC trip was not visible in the 50 Hz Direct Current to Direct Current Converter Unit (DDCU) current data, however, it is possible that the current spike was rapid enough to not be sampled at 50 Hz. After analysis of the system showed that the suspect components would be isolated if the main power feed was not used, the rack was successfully repowered using the auxiliary power feed. The auxiliary power feed will allow the MicroChannel Diffusion to achieve their science goals, and troubleshooting on the main power feed will occur after that payload’s objectives are complete.
Today’s Planned Activities
All activities were completed unless otherwise noted.
- МО-8. Configuration Setup
- МО-8. Body Mass Measurement r/g 2639
- МО-8. Closeout Ops
- USOS window shutter close
- Window cover close #6,8,9,12,13,14 r/g 6965
- On MCC GO Regeneration of БМП Ф1 Micropurification Cartridge (start)
- TM750 video camera battery charge
- Sprint Exercise, Optional
- TORU OBT r/g 2638, 2642 + 2642
- UBNT. Locate Ultrasonic Background Noise Test Battery (UBNT)
- IFM Major Constituent Analyzer (MCA) Troubleshooting
- UBNT. AA batteries swap
- IFM Major Constituent Analyzer (MCA) Troubleshooting
- WRS Maintenance
- Auxiliary Laptop Anti-Virus Update / r/g 8247
- VIZIR. Experiment Ops with СКПФУ Hardware r/g 2643
- Transfer of Т61 HDD from USOS / r/g 2641
- Preventive maintenance of DC1 АСП hatch sealing mechanisms and Progress 431 [АСА] hatch
- VIZIR. Experiment Photography / r/g 2644
- Progress 431 (DC1) Stowage and IMS Ops / r/g 2584
- СОЖ Maintenance
- IMS Delta File Prep
- WRS Maintenance
- Exercise Data Downlink via OCA
- Progress 431 (DC1) Stowage Completion Report r/g 2234, 2315, 2435, 2512, 2584
- UBNT. Hardware Stowage
- On MCC GO БМП Ф1 Absorption Cartridge Regeneration (end)
- Preparing for Antivirus scan on Auxiliary Computer Laptops / r/g 8247
Completed Task List Items
- PL CTB move
- Polar4 locker prep
- SSC11, SSC13 battery swap
- USOS stowage consolidate
- PiP PS120 secure
Ground Activities
All activities were completed unless otherwise noted.
- Nominal ground commanding
Three-Day Look Ahead:
- Tuesday, 06/28: TM750 camcorder battery charge & recording, 3D Printing hardware gather/experiment setup/coupon retrievals
- Wednesday, 06/29: CBEF Incubator Unit cleaning, Mouse habitat IU installation, MSPR VRU SSD replacement
- Thursday, 06/30: SPHERES Docking Port test/maintenance run
QUICK ISS Status – Environmental Control Group:
|
Component |
Status |
|
Elektron |
On |
|
Vozdukh |
Manual |
|
[СКВ] 1 – SM Air Conditioner System (“SKV1”) |
On |
|
[СКВ] 2 – SM Air Conditioner System (“SKV2”) |
Off |
|
Carbon Dioxide Removal Assembly (CDRA) Lab |
Standby |
|
Carbon Dioxide Removal Assembly (CDRA) Node 3 |
Operate |
|
Major Constituent Analyzer (MCA) Lab |
Idle |
|
Major Constituent Analyzer (MCA) Node 3 |
Operate |
|
Oxygen Generation Assembly (OGA) |
Process |
|
Urine Processing Assembly (UPA) |
Standby |
|
Trace Contaminant Control System (TCCS) Lab |
Off |
|
Trace Contaminant Control System (TCCS) Node 3 |
Full Up |