Project plan root cause and risk analysis team 2
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Project Plan Root Cause and Risk Analysis Team 2. NASA: Henning Leidecker; 301-286-9180 Boeing: Gary W. Bickel; 714-372-6820 2/25/00. Team 2 Members. Project Leads:Henning Leidecker-NASA/GSFC Gary W. Bickel-Boeing/HB Team Members: Ray Prestridge-JSC

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Project Plan Root Cause and Risk Analysis Team 2

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Project plan root cause and risk analysis team 2

Project PlanRoot Cause and Risk AnalysisTeam 2

NASA: Henning Leidecker; 301-286-9180

Boeing: Gary W. Bickel; 714-372-6820

2/25/00


Team 2 members

Team 2 Members

  • Project Leads:Henning Leidecker-NASA/GSFC

    • Gary W. Bickel-Boeing/HB

  • Team Members: Ray Prestridge-JSC

    • Pete Mueggler-BHB

    • Carol McDonald-BHOU

    • Anna Cantwell-SEA

    • David Gill-BHB

    • Jeanette Plante-GSFC

    • Dave Rothermel-BICC

    • Dale Zevotek-BICC

    • Martin Seifert-LSFT

    • David Beverly-JSC

    • Craig Mueller-AERO

    • Harold Battaglia-BHOU

    • John Canham-GSFC


  • Task 1 root cause analysis

    Task 1-Root Cause Analysis

    • Identify Primary Agent for “Rocket Engine Defect”--complete: HF-etch enabled by Polyimide void and carbon coating breech

    • Investigate Strength Reduction, ‘96 Cable--complete: 124/446 samples below Proof-Test level; Polyimide void consistently observed

    • need to complete microphotographs on approximately 34 samples

    • Investigate Strength Reduction, ‘98-9 Cable--partially complete

    • Determine source of Polyimide coating voids (fiber or other process)

    • Determine Agent (or process step) for carbon coating breech

    • Resolve Lingering Questions (Polyimide Canyons versus voids, SEM)

    • Complete Root Cause Analysis Report


    Task 1 root cause status

    Task 1-Root Cause: status

    • Microphotos on 34 Samples-deferred

    • Strength Tests 98-9 Cable-on hold

    • Polyimide Coating Voids Source: no progress

    • Coating Penetration Test Plan in development

    • SEM to sort variations in Polyimide void structure: no progress

    • Root Cause Report: Major sections left to write


    Task 2 risk analysis us lab and node 1

    Task 2-Risk AnalysisUS Lab and Node 1

    • Estimate Potential Failures due to Rocket Engine Defects--

    • Determine Effective “n” value--failed; insufficient data

    • Determine alternate model for failure prediction of existing defects/flaws

    • Estimate pre-flight and on-orbit failures based on strength distribution data

    • Determine Potential for Post-Process defect generation by Launch vibration impact

    • Determine Potential for on-orbit defect generation by Ionized Radiation

    • Prepare Risk Analysis Report for US Lab and Node 1


    Task 2 risk analysis status us lab and node 1

    Task 2-Risk Analysis: StatusUS Lab and Node 1

    • Preliminary Risk Analysis Completed

    • No consensus on Preliminary Risk Analysis based on “worst case” n-value

    • Preparing proposal to do n-value tests for ESD attack on uncabled fiber

    • Efforts on vibration/ionizing radiation launch & on-orbit effects on-going


    Task 3 risk analysis reduction node 1 dt0 cable esa cable all 98 9 cable use

    Task 3-Risk Analysis & Reduction(Node 1 DT0 Cable, ESA Cable, all ‘98-9 Cable Use)

    • Determine Low Strength Distribution for ‘98-9 cable--

    • Provide Preliminary Strength Tests on ESA Cable (representing ‘97 production)--

    • Determine Effect of additional “Proof Testing” at the Cable level

    • Apply results of above in estimating risk

    • Prepare Risk Analysis Reports as needed for these tasks


    Task 3 risk analysis reduction status node 1 dt0 cable esa cable all 98 9 cable use

    Task 3-Risk Analysis & Reduction: Status(Node 1 DT0 Cable, ESA Cable, all ‘98-9 Cable Use)

    • Strength Tests on 98-9 cable on hold

    • Tests on ESA cable pending receipt of cables and funding decisions

    • Proof Testing fixture in development


    Team 2 schedule

    Team 2--Schedule


    Team 2 resources required

    Team 2--Resources Required


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