1. GLAST Large Area Telescope:
Gamma-ray Large Area Space Telescope
GLAST Large Area Telescope:
Performance & Safety Assurance
Darren Marsh
SLAC
Performance & Safety Assurance Manager

2. LAT NCR Metrics Subsystem Open NCR’s Closed NCR Last 10 days
# Over 30 Days Open
DAQ 11 5 2
Tracker (SLAC) 27 3
Mechanical
Calorimeter *
ACD
I&T 16 4
* No metrics provided

3. NCR Activities Good progress on addressing subsystem NCR’s
Message is the same…..
Need to improve on timely closure of NCR’s
Specific Subsystem NCR activities
Tracker
MRB required today for NCR #300 – EM Pitch Adaptors from Titan utilized for flight
MCM and flex cable NCRs account for 23 of the open NCRs
These NCR are activity being addressed and closure plan is in place
DAQ
NCR’s relating to EEPROMs and EPU/SIU LCB coupons failures are being focused on
I&T
19 NCR’s being tracked, 17 NCR’s have clear closure plans
MRB Meeting on NCR’s 373 and 385 Thursday, 3/17, 10:00 a.m.

4. Mechanical Systems NCR’s
NCR #147 - To be closed upon completion of Grid Survey Optical Survey
NCR #257 - Must be closed prior to grid hand-off to I&T
NCR #372 - Waiting for Subsystem Manager approval to close

5. Tracker NCR’s
NCR #345 – Level III Specification Change – Change request required
NCR #347 – Level III Specification Change – Change request required

6. DAQ NCR’s NCR #335 – Pending TEM CCA testing – Follow-up at 3/24 MRB
NCR #367 – Further DAQ analysis of issue required – On agenda for 3/24 MRB

7. I&T NCR’s MRB Meeting, Thursday, March 17th at 10:00 a.m.
NCR 385: Review why muTrg Test would not complete. Review why file from Fridays failed calibDAC run had to manually be placed into the Ancillary directory in order to run muTrg. Again review why the test would not complete until, raising and re-raising threshold further, to have test run to completion. MRB to Discuss interim disposition: Perform tests on HW and SW to determine why this event rate causes trouble during this routine and how other routines can process significantly higher event rates.
NCR 373: Review CAL CPT if test is complete prior to MRB. The GASU based test stand must first be validated. After validation of the GASU based test stand it will be connected to the FM105-CAL/TEM/TPS and the CAL CPT will be performed.