Document: LAT-PR-01967 Section 15 Manufacturing & Processes 1 GLAST LAT Project CDR/CD-3 Review May 12-16, 2003 GLAST Large Area GLAST Large Area Telescope Telescope Manufacturing Jerry Clinton Chief Manufacturing Engineer Stanford Linear Accelerator Center jclinton @SLAC. stanford .EDU (650) 926-5435 Gamma-ray Large Gamma-ray Large Area Space Area Space Telescope Telescope
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GLAST LAT ProjectCDR/CD-3 Review May 12-16, 2003 Document: LAT-PR-01967Section 15 Manufacturing & Processes 1 GLAST Large Area Telescope Manufacturing.
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Production Readiness ReviewProduction Readiness Review
• Conducted by IPO• Required before start of flight manufacturing• Iterative reviews to support subsystem delivery schedules• Review of processes, specifications, drawings, parts and
materials lists– Documentation released for manufacturing– Processes verified on prototype or engineering-model
hardware– EEE parts on Parts Identification List and approved for the
specific application– Raw materials on Program Approved Materials List and
• Must be a closed loop control process • Parts/materials received from suppliers into flight stores• Parts and materials issued to work orders for assembly• Finished assemblies returned to stores• Process repeats for next higher assemblies
Non-Conforming Material HandlingNon-Conforming Material Handling
• All non-conformances are documented on a Non-Conformance Report (NCR)– Identifies non-conforming item– Describes non-conformance– Describes environment unit was in at the time the non-
conformance was discovered– Implemented using REMEDY
• Work stopped until NCR is reviewed and dispositioned by Material Review Board– Chaired by Quality Engineer– Supported by responsible engineer, manufacturing engineer,
and other specialty engineers as appropriate– NCRs archived in a data base and kept with the item work
• Spares listed in LAT-MD-01687, Configuration Item Data List • End items delivered by Subsystems to Integration and Test at
SLAC• Damaged or failed end items returned to manufacturers for
repair• Calorimeter modules repaired by NRL• ACD repaired by GSFC• Tracker towers/trays repaired by INFN • DAQ hardware repaired by assembly vendor or SLAC
personnel– Plan to hire qualified assemblers to support I&T
– These assemblers will work with assembly vendors to learn hardware