ISS On-Orbit Status 20 Apr 2002

All ISS systems continue to function nominally, except as noted
previously or below.

The Soyuz TM-33 spaceship relocation was successfully completed.
  [Final preparations for the move from the FGB nadir
port to the Pirs DC-1 docking module began late last night with Soyuz
systems activation at about 11:15 pm EDT.  The crew then
deactivated systems in the Russian (RS) and U.S. (USOS) segments to
reconfigure the ISS for uncrewed operation, including deactivation of
pressure sensors, caution and warning power panel, Vozdukh CO2
absorber, ASU toilet system, etc.  At 12:20 am, Soyuz went on
independent power. The three crewmembers abandoned the station,
entered the spacecraft and closed hatches at about 1:00 am.
 Undocking under manual control was at 5:16 am, followed by
brief (21-min.) translation along the length of the RS to the Pirs
DC-1.  CDR Yuri Onufrienko redocked smoothly at 5:37 am, and the
crew reentered the ISS after spending about two hours checking for
pressure leaks and opening the hatches. ISS attitude control was
handed over to the RS for the relocation and later returned to the
U.S. CMGs.]

The rest of the workday was dedicated to the reactivation of all
ISS systems and switching the Soyuz back to integrated power.

The ground employed the SSRMS cameras to view the Soyuz relocate. For
this purpose, the crew was requested to connect the UOP (utility
outlet panel) Bypass cable foref=e Cupola RWS (robotic workstation)
prior to closing the US hatches.

POC (Payload Operations Center) personnel thanked FE-2 Dan Bursch for
his quick action in correcting an anomaly of the BPS (biomass
production system) yesterday, which was caused by a couple of
factors. [As a result of Thursdayâs harvest procedure, executed
nominally, the humidity system was exposed to dry cabin air for a
longer period of time than it could stand. This contributed to the
loss of the primary system. The problem was compounded by the fact
that the loss of prime was not caught in telemetry until the next
normal shift of the hardware systems expert. As a preventive measure,
the steps in the harvest procedure have since been reordered to
minimize the humidity systemâs exposure to cabin air. Bursch’s
actions resulted in saving a substantial amount of science return.
Without his immediate corrective action, BPS environmental control
subsystems would have remained disabled for 24 to 48 hours.
Investigators estimate that this would have resulted in an 85% loss
of science for growth chambers 1 and 3 (wheat) for this growth cycle.
This would have also caused a 30% science loss for chamber 4
(Brassica) due potential interference with flowering, pollination,
and post-flight carbohydrate analysis.]

Science Update (Expedition Four — 18th):

Another really busy week completed, with plenty of successes for
science.  Several Principal Investigators (PIs) are very happy
to have their hardware and samples back on the ground, while others
are equally excited to be in space.  The 8A Stage is off to a
great start, and the ground extended special thanks to
"Farmer" Dan Bursch for getting BPS off to a successful
beginning.  "Your continued great work for science is truly
inspiring."

Hoffman-Reflex:  Completed.

Extra-Vehicular Activity Radiation Monitors (EVARM):  The
EVARM Team sent their appreciation for a busy and productive couple
of weeks.  The data collected during 8A Joint Ops accounts for a
substantial portion of their requirements.  The data will be
downloaded to the HRF PC next Wednesday in preparation for the next
possible PC Data Downlink.

Ultrasound:  In progress.

GASMAP/Pulmonary Function in Flight (PuFF):  In
progress.

Renal (Kidney) Stone Experiment:  In progress.

Interactions (NTXN):  In progress.

Human Research Facility Workstation (HRF WS):  n/a

Human Research Facility/PC (HRF/PC): n/a

Cellular Biotechnology Support Systems (CBOSS):
 The previously observed high temps in the BTR (biotechnology
refrigerator) are thought to be the result of the failure of one of
the three banks of thermo-electric coolers.  We believe that
with a relatively light BPS sample load, the BTR should be able to
maintain temps below 8¼ C.

Physics of Colloids in Space (EXPPCS):   Avionics
Section and Test Section will be sent home on UF-2.

Space Acceleration Measurement System (SAMS):  The RTS
Drawers and the embedded EE are not booting from the ICU Drawer. SAMS
is continuing to work this from the ground.

Microgravity Acceleration Measurement System (MAMS):  In
progress.

Protein Crystal Growth-Single Locker Thermal Enclosure System
(PCG-STES):  Coming home.

Protein Crystal Growth-Enhanced Gaseous Nitrogen (PCG-EGN): In
progress.

Materials ISS Experiment (MISSE):  Nominal and collecting
data.

Educational Payload Operations (EPO):  Complete.

Active Rack Isolation System – Isolation Characterization
Experiment (ARIS-ICE):  ARIS has been in ACTIVE mode
continuously for several days now and is ready for ZCG furnace
activation scheduled for day 112.  ZCG (Zeolite crystal growth)
is the first microgravity payload that requires ARIS isolation
performance, so we are very excited about this major milestone for
ARIS.  Friday, 4/19 marked another significant milestone for
ARIS and ARIS-ICE: as of this day, ARIS and ARIS-ICE have been on
orbit for one full year.  Special thanks are due the Increment
2, 3, and 4 crews for their outstanding support throughout this past
year.  Even though ARIS suffered through a couple of pushrod
failures, ARIS isolation performance has been excellent, and ground
specialists are looking forward to continued success providing a
quality microgravity environment for ISS science payloads

EarthKAM:  Currently complete.  All EarthKAM images
are available for public access on the EarthKAM data system at:
http://EarthKAM.sdsc.edu/cgi-bin/datasys/ek_images_station

Advanced Astroculture (ADVASC):  The ADVASC experiment
has been terminated and returned to Earth on 8A/Atlantis.

Zeolite Crystal Growth (ZCG):  Activation is scheduled
for 4/22 (Monday).

Biomass Production System-Photosynthesis Experiment & System
Testing Operation (BPS-PESTO):   Several crew and
automated operations were performed successfully for the BPS payload,
including Gas Calibration  & Sample activities for PGC1, 2,
and 3, CO2 Drawdowns for PGC1, and 2, and Vapor Pressure Deficit
activities in Chamber 3.  The sample collection from the plant
harvest of PGC2 was successful and the tissue is preserved in the
Kennedy Fixation Tubes and the ARCTIC Freezer.  As a result of
the harvest procedure, which was executed nominally, the humidity
system was exposed to dry cabin air for a longer period of time than
it could stand.  Crew operations were requested along with
several ground commands to recover the system.   Monitoring
continues in this system to ensure that it has recovered to nominal.
 Procedure modifications have been submitted to correct this
problem for the next harvest.

Commercial Protein Crystal Growth-High Density (CPCG-H):
 The CPCG-H team sent thanks to the crew for keeping CPCG-H
powered in spite of problems with EXPRESS Rack 4. Health and Status
data continues to flow with the payload in a nominal state.

Commercial Generic Bioprocessing Apparatus (CGBA):  CGBA
is currently nominal.