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Using CM to Maintain the Design Basis

Using CM to Maintain the Design Basis. Facilitated By: Lloyd Hancock Rick Harris. Examples of Design Basis Requirements Miscues. Vertical Assessment – identified unacceptable time critical action Safety injection system test lines – test procedures didn’t reflect design assumptions

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Using CM to Maintain the Design Basis

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  1. Using CM to Maintain the Design Basis Facilitated By: Lloyd Hancock Rick Harris

  2. Examples of Design Basis Requirements Miscues • Vertical Assessment – identified unacceptable time critical action • Safety injection system test lines – test procedures didn’t reflect design assumptions • Vendor adding a platform over vessel during refueling – not evaluated properly

  3. CM Program Elements • Operations & Maintenance Procedures reviewed by Engineering • Questioning Attitude to catch obscure assumptions • Engineering review of questionable situations • Identify subtle changes to plant that modify design

  4. CM Program Elements • Change in initial conditions analysis assumptions • New employee orientation program should include CM • Capturing tribal knowledge • Transfer problem solving skills • Reward questioning attitude • Mentoring

  5. CM Program Elements • Highlighting in procedure when design requirement • Make a cross reference of links • Procedure commitment database • 50.59 review team with participation of Procedure writers • Vertical slice self assessments

  6. CM Program Elements • Assumptions in DBDs • Procedure commitment database • Oversight of non-stationpersonnel • Operating Experience • Software programs

  7. How To Assess Conformance • Vertical slice • Assessments, quick hitter • INPO AFIs – OE • Wait until NRC catches you • Operating Events • Corrective Action Program for trending

  8. How To Assess Conformance • Performance Indicators • Surveys • External Review • Bring in new people – new blood

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