GLAST Large Area Telescope:

1
GLAST Large Area Telescope Manufacturing
Preparation Design Engineering Meeting Jerry
Clinton 1 April 2003 Stanford Linear Accelerator
Center Stanford, CA
2
Procurement Process Flow
3
Manufacturing Requirements

• Drawings and specifications must be released
• Parts and materials must be listed on PIL and
  must be approved by PCB or MPRB as appropriate
• All parts and materials must be issued from
  flight stores
• Completed flight assemblies must be kept in
  flight stores
• Work must be authorized via an approved Assembly
  and Inspection Data Sheet (AIDS)

4
Manufacturing Process

• Closed loop
• Parts and materials issued in kits from stores
• Kit is assembled, tested, and inspected
• Delivery of assembled kit to stores closes the
  loop
• Maintains clear traceability of parts, materials,
  and finished flight items
• Approved AIDS is required to start the process
• Applies to fabrication, assembly, test, and
  inspection
• Does not apply to fabrication where supplier
  procures raw materials
• If work is to be performed by a subcontractor,
  their travelers should be attached, or PO should
  require supplier to make them available for
  review by SLAC and Government personnel

5
Manufacturing Process - Continued

• Stock room verifies item is ready for
  manufacturing prior to pulling kit
• Drawings and/or specifications released
• Test procedures released
• Parts approved
• Completed AIDS ends the process
• Last step is to deliver to stores

6
Assembly and Inspection Data Sheets

• AIDSs are LAT work orders
• Authorize taking parts and materials out of
  stores and performing work to manufacture flight
  hardware
• Defines operations executed to fabricate,
  assemble, and test LAT hardware items
• Provide traceability from raw materials to
  finished flight items
• Required for all LAT manufacturing activities
  including outside fabrication and assembly
• LAT-MD-01624
• AIDS preparation instructions
• Provides some guidelines on work instruction
  preparation
• Accessed from Quality Assurance web page

7
AIDS List Screen
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AIDS Entry Screen (Top Portion)
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AIDS Entry Screen (Bottom Portion)
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Check Screen
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AIDS List with New Record
12
Report Screen
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Update Screen
14
Updated Report Screen