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THEMIS Instrument CDR(1) UCB, April 19 & 20, 2004 Mission Assurance Critical Design Review Ron Jackson University of California - Berkeley.

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Presentation on theme: "THEMIS Instrument CDR(1) UCB, April 19 & 20, 2004 Mission Assurance Critical Design Review Ron Jackson University of California - Berkeley."— Presentation transcript:

1 THEMIS Instrument CDR(1) UCB, April 19 & 20, 2004 Mission Assurance Critical Design Review Ron Jackson University of California - Berkeley

2 THEMIS Instrument CDR(1) UCB, April 19 & 20, 2004 Requirements Performance Assurance Implementation Plan General Assurance Review Performance Verification Safety EEE parts Materials and Process Control Design Assurance Quality Assurance Contamination Control Software Assurance

3 THEMIS Instrument CDR(1) UCB, April 19 & 20, 2004 General Previously Designed, Fabricated of Flown Hardware - ESA, DCB, IDPU & EEE parts Flow-Down of PA Requirements - Subcontractors, Vendors Surveillance - Work Activities, Operations and documentation reviewed by UCB/GSFC SR&QA Verification - PI will provide any documents and records outlined in the PAIP upon request to GSFC

4 THEMIS Instrument CDR(1) UCB, April 19 & 20, 2004 ASSURANCE REVIEW GSFC Flight Assurance - Peer reviews and system level Reviews Flight Assurance Review Program - PDR - CDR - PER - PSR

5 THEMIS Instrument CDR(1) UCB, April 19 & 20, 2004 Performance Verification Verification Matrix - Shows the flow-down of science and Mission Requirements Environmental Test Plan – Listed all the Environmental test to be performed Verification Test – All test conducted at the Component level and above Verification Test Report – This report shows how well the data correspond to the expected results Demonstration of Failure-Free Operation – Prior to Launch 100 hours of trouble- free operation

6 THEMIS Instrument CDR(1) UCB, April 19 & 20, 2004 SAFETY General - Safety Plan that identifies and controls hazards to personnel, facilities, ground support equipment, and the flight system during all stages of development. - Write Safety Plan per EWR127-1 - Write Hazards Assessment Report - Procedure Approval - Safety Noncompliance Request - Support for Safety Working group Meeting - Safety data package, Launch site safety plan, orbital debris

7 THEMIS Instrument CDR(1) UCB, April 19 & 20, 2004 EEE Parts Requirements Per 311-INST-001A, grade 3 - Use PPL 21 preferred parts, design permitting - PIND, per Mil-STD-750 and Mil-STD-883, required for cavity devices. - DPA for complex or known problem devices - When needed, use DESC approved screening facility for part testing. Plastic Encapsulated Microcircuits (PEMs) - Part Derating - Radiation Tolerance - Alerts - Parts Age Control - Parts Control Board - Parts Identification List

8 THEMIS Instrument CDR(1) UCB, April 19 & 20, 2004 Materials and Processes Control Selection Requirements - Hazardous Material per EWR127-1 - Vacuum Outgassing review per NASA PUB. 1124 - Stress Corrosion Cracking per MSFC-SPEC-522 - Fasteners per 541-PG-8072.1.2 - Lubricants will be approved by GSFC’s materials group - Boards Coupons will be evaluated by an approved GSFC vendor or GSFC - Magnetics Compatibility per UCB Magnetics plan Documentation - Engineering drawing for materials and processes GIDEP Alerts - Reviewed by QA for all parts and materials

9 THEMIS Instrument CDR(1) UCB, April 19 & 20, 2004 Design Assurance Failure Modes and Effects Analysis -As part of design process to identify likely failure modes and mitigation schemes Limited Life Items - List of all hardware that is subject to degradation due to age, operating time, or cycles. Trending - Performance stability parameters shall be measured and tracked through spacecraft I&T and post-launch operations

10 THEMIS Instrument CDR(1) UCB, April 19 & 20, 2004 Support of design reviews - QA issues and provides product quality status Configuration Management - Configuration management plan provided by UCB - Gerber files copied to system engineering Identification and Traceability - Part numbers will be provided for all items - Serial/lot numbers or date codes will be provided - Records will be traceable backwards to the part or material Quality Assurance

11 THEMIS Instrument CDR(1) UCB, April 19 & 20, 2004 Quality Assurance cont. Procurement Controls -Purchase raw materials will include requirements for results of physical and chemical tests or a C of C -Test samples or coupon -Age Control/Limited-Life records will track date, when useful life was initiated/expiration date -UCB requests inspection and test reports from suppliers with the deliverable item - QA reviews purchase order requirements for flight hardware Receiving Inspection - QA verification of documentation meets PO requirements, part marking/packaging and quantity

12 THEMIS Instrument CDR(1) UCB, April 19 & 20, 2004 Quality Assurance cont. Fabrication Control - UCB generated assembly instructions for all flight hardware Workmanship - Soldering per NASA STD-8739.3, NASA STD-8739.2 - Cable,Harness, and Wiring per NASA STD-8739.4 - Conformal Coating and Staking per NASA STD-8739.1 - Printed Wiring Board per NHB 5300.4 Worker Certification - All technicians are certified per NASA standards above ESD Control - UCB ESD plan,THM-SYS-014-ESD revision A, 4/8/2004

13 THEMIS Instrument CDR(1) UCB, April 19 & 20, 2004 Quality Assurance cont. Problem/Failure reporting - Problem/Failure reporting may be informal up to the time of integration with flight hardware - After flight software/hardware integration, problem/failure reporting will be in accordance with the standard failure reporting, failure analysis, and corrective action process

14 THEMIS Instrument CDR(1) UCB, April 19 & 20, 2004 Quality Assurance cont. Problem/Failure Reporting

15 THEMIS Instrument CDR(1) UCB, April 19 & 20, 2004 Quality Assurance cont. Alerts -Two alerts that impact THEMIS: Actels A54SX72 – surge current problem Diode JANTXV1N5711-1 ESD problem Printed Wiring Boards - Build per Mil-P-55110F with coupons Inspections and Tests - QA will verify soldering and witness component/system testing and review test records - QA will verify the installation and removal of Red Tag/Green Tag items prior to testing and launch Metrology - QA will verify that all equipment is in calibration prior to testing

16 THEMIS Instrument CDR(1) UCB, April 19 & 20, 2004 Quality Assurance cont. Handling - Handling equipment will be proof load tested twice intended load prior to use Shipping - flight hardware will be shipped with appropriate documentation and handling instructions

17 THEMIS Instrument CDR(1) UCB, April 19 & 20, 2004 Contamination Control UCB Contamination plan complete - Class 100k clean room - Air particle count will be monitored - All flight hardware will be placed in clean bags

18 THEMIS Instrument CDR(1) UCB, April 19 & 20, 2004 Software Assurance IV&V (IDPU & BAU) -To review software code - Develop Metrics (Software risk assessment) - All software problems will be tracked on problem reports - All software changes will be under configuration management Probe Bus - Under UCB configuration management review - Software problems reports provided to UCB

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