GLAST LAT Project Gammaray Large Area Space Telescope

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GLAST LAT Project Gamma-ray Large Area Space Telescope DOE Rebaseline Review , February 13,

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

GLAST LAT Project DOE Rebaseline Review , February 13, 2005 System Engineering • Coordination

GLAST LAT Project DOE Rebaseline Review , February 13, 2005 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. 2

GLAST LAT Project DOE Rebaseline Review , February 13, 2005 Project Controls • Provide

GLAST LAT Project DOE Rebaseline Review , February 13, 2005 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. 3

GLAST LAT Project DOE Rebaseline Review , February 13, 2005 Deliverable Risk Assessment DAQ

GLAST LAT Project DOE Rebaseline Review , February 13, 2005 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. 4

GLAST LAT Project DOE Rebaseline Review , February 13, 2005 Deliverable Risk Assessment Risk/Rank

GLAST LAT Project DOE Rebaseline Review , February 13, 2005 Deliverable Risk Assessment Risk/Rank Flight Parts Moderate Box Assembly Delays – Low Box Test Failure. Low Description Mitigation BAE Rad 750 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. - RAD 750 has GSFC Project emphasis 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 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 - Alternate LOT identified 5

GLAST LAT Project DOE Rebaseline Review , February 13, 2005 LAT Top risks ID

GLAST LAT Project DOE Rebaseline Review , February 13, 2005 LAT Top risks ID # Proj Mgt 002 Proj Mgt 004 Risk Rank Moderate Risk Description If ASICs fail to meet qualification requirements; then schedule impact will occur If TEM Power supply fails qualification; then final implementation may exceed schedule impacting delivery to I&T Risk Mitigation Status • 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 • 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 • Test Bed operating • No new issues 6

GLAST LAT Project DOE Rebaseline Review , February 13, 2005 Top risks ID #

GLAST LAT Project DOE Rebaseline Review , February 13, 2005 Top risks ID # SE-007 Risk Rank Moderate Risk Description If a critical component fails post LAT integration; then deintegration will result in cost & schedule impact If target hardware, requirement development or manpower is delayed; Then Flight-Software development schedule will be impacted Elec 004 Moderate Risk Mitigation Status • 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 deintegration • Qual & acceptance planning in-place • Detailed incremental development program • Adapting monthly demos • Ensure sufficient software test on target hardware during development to drive out any requirement disconnects. • Tracking EGSE resource utilization • Include adequate peer reviews before each spiral cycle prior to release • Demo frequency increased from monthly to approximately weekly • Include monthly Demos to verify functionality/measure progress • I&T developing rework contingency plans. • Integration plan baselined • Updated detailed test plan released 7

GLAST LAT Project DOE Rebaseline Review , February 13, 2005 Top risks ID #

GLAST LAT Project DOE Rebaseline Review , February 13, 2005 Top risks ID # Proj Mgt 005 Risk Rank Moderate Risk Description Risk Mitigation • Manufacturing engineer added to expedite minimum cost closure • Clarification and purchase If parts and vendor orders are package review to ensure delayed or bids exceed expectations; accurate bids then flight production costs & • Increase production delivery schedule will be impacted management staff Status • 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 • Follow up Environmental Planning TIM held on 1 October at SLAC, I&T driving AIs to conclusion • Continuing periodic TIMS • LAT I&T to consider and develop opportunities to path find key activities required prior to LAT shipment to NRL 8

GLAST LAT Project DOE Rebaseline Review , February 13, 2005 Managing schedule • •

GLAST LAT Project DOE Rebaseline Review , February 13, 2005 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 9