1. GLAST LAT ProjectDOE Rebaseline Review, February 13, 2005 1 GLAST Large Area Telescope: Lowell A. Klaisner Stanford Linear Accelerator Center Chief Engineer Klaisner@slac.stanford.edu 650-926-2726 Gamma-ray Large Area Space Telescope System Engineering Project Controls Risk management

2. GLAST LAT ProjectDOE Rebaseline Review, February 13, 2005 2 System Engineering Coordination & tracking of LAT instrument requirements, subsystem designs, tests, and test interfaces. Functional and performance testing of LAT not covered in subsystem plans; includes system trades & audits, concept of operations, and development of system metrics. Audit efforts related to maintaining, certifying, tracking and reporting on parts. Risk analysis of the LAT instrument and ground systems. Maintain documentation and data libraries Manage configuration of the instrument and ground systems.

3. GLAST LAT ProjectDOE Rebaseline Review, February 13, 2005 3 Project Controls Provide project control to maintain instrument project master schedule and budget. Track actual costs and schedule performance of all subsystems and institutions Analyze performance via the Project Management Control System (PMCS). Develop and maintain tools to track progress on the end game on a weekly basis Prepare reports for project management and funding sponsors. Develop and implement approved changes in the baseline plan.

4. GLAST LAT ProjectDOE Rebaseline Review, February 13, 2005 4 Deliverable Risk Assessment DAQ cost & schedule delivery risk is driven by three factors: Flight Parts: Unexpected parts inspection failures or Government-Industry Data Exchange Program (GIDEP) alerts requiring late change in planned flight parts, new order for alternate parts, delay in box assembly or re-work of box. Box Assembly Delays: Box assembly subcontractors do not execute as required to achieve the delivery schedule. Box Test Failure: Unexpected failure of box qualification and/or acceptance tests requiring re-work and retest.

5. GLAST LAT ProjectDOE Rebaseline Review, February 13, 2005 5 Deliverable Risk Assessment Risk/RankDescriptionMitigation Flight Parts - Moderate BAE Rad750 CPU –Industry wide GIDEP. Internal heat-sinks to be re-worked. Omnirel regulator replacement Over 60 units industry wide with priority given to defense projects. SLAC need date is April 05, SIB EEPROM – Austin EEPROMs did not pass GSFC/NASA inspection. Review of part quality issues ongoing. SLAC need date is April 05. - RAD750 has GSFC Project emphasis - Alternate LOT identified Box Assembly Delays – Low Delivery is dependent on board level and box level assembly by subcontractors qualified to fabricate space flight quality hardware. General Technology Corporation: TEM and TPS. Aeroflex : PDU and GASU. Cicon: Harness construction. Remaining components are planned to be selected by March 05 - On site quality inspector provides daily insight - Regular reporting milestones - Senior management interface to ensure priorities maintained Box Test Failure- Low Failure of structural, thermal EMI/EMC, electrical or functional tests prior to completion of the fabrication effort is possible. Any significant test failure could result in schedule delay - Engineering model test program completed. - Lessons learned incorporated into flight design. - Test approach has been reviewed to ensure that an over-test condition does not occur

6. GLAST LAT ProjectDOE Rebaseline Review, February 13, 2005 6 LAT Top risks ID #Risk Rank Risk DescriptionRisk MitigationStatus Proj Mgt - 002 Moderate If ASICs fail to meet qualification requirements; then schedule impact will occur Focused review & test. Margin for re-runs protected where possible Individual risks Identified by subsystem Extensive use of DAQ test bed to drive out system issues Cal/ACD ASIC’s continued testing Test Bed operating No new issues Proj Mgt - 004 Moderate If TEM Power supply fails qualification; then final implementation may exceed schedule impacting delivery to I&T Key focus item identified for DAQ TEM/PS extensive EM use as EGSE Implementation plan in place and proceeding Fuse audit completed Functional tests complete, environmental tests to be completed in February

7. GLAST LAT ProjectDOE Rebaseline Review, February 13, 2005 7 Top risks ID #Risk Rank Risk DescriptionRisk MitigationStatus SE-007Moderate If a critical component fails post LAT integration; then de- integration will result in cost & schedule impact Extensive use of EM test bed to support flight H/W & S/W development Thorough qualification and acceptance tests Pre planned I&T actions for de- integration Qual & acceptance planning in-place I&T developing re- work contingency plans. Integration plan baselined Elec- 004 Moderate If target hardware, requirement development or manpower is delayed; Then Flight-Software development schedule will be impacted Detailed incremental development program Ensure sufficient software test on target hardware during development to drive out any requirement disconnects. Include adequate peer reviews before each spiral cycle prior to release Include monthly Demos to verify functionality/measure progress Adapting monthly demos Tracking EGSE resource utilization Updated detailed test plan released Demo frequency increased from monthly to approximately weekly

8. GLAST LAT ProjectDOE Rebaseline Review, February 13, 2005 8 Top risks ID #Risk Rank Risk DescriptionRisk MitigationStatus Proj Mgt - 005 Moderate If parts and vendor orders are delayed or bids exceed expectations; then flight production costs & delivery schedule will be impacted Manufacturing engineer added to expedite minimum cost closure Clarification and purchase package review to ensure accurate bids Increase production management staff Purchase order tracking/monitoring system in place to highlight roadblocks Design documentation release plan prioritized by vendor selection and component fabrication need dates Workarounds implemented for late parts Hired additional head to manage production IT - 006 Moderate If logistic or facility integration issues are found during LAT environmental test program; then re-work will delay schedule LAT I&T to plan a roadmap of activities from LAT building 33 to completion of environmental testing LAT I&T to consider and develop opportunities to path find key activities required prior to LAT shipment to NRL Follow up Environmental Planning TIM held on 1 October at SLAC, I&T driving AIs to conclusion Continuing periodic TIMS

9. GLAST LAT ProjectDOE Rebaseline Review, February 13, 2005 9 Managing schedule Detailed list of milestones is posted on the website Progress toward these milestones is monitored weekly Detailed production schedules are also on the website Manufacturing engineer reports the progress against those schedule to the Project Manager twice a week. The Project Manager contacts senior management at the vendor when significant deviations are detected