Transcript TITLE
I n s t i t u t e o f N u c l e a r P o w e r O p e r a t i o n s
RP 2020 and ALARA Update
Cindy Connelly, Sr. Evaluator
Agenda
• • • • RP 2020 Standardization Initiative Collective Radiation Exposure – Importance of the Goal – Current Performance – Action Plan ALARA Observations Benchmarking the Best Practices 2
RP 2020 INPO’s Role
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RP 2020 – INPO’s Role
Determine Feasibility of Standardization INPO project due in June 2009 – Create objective set of criteria to choose what to standardize and priority – Determine product format and method of implementation/enforcement – Develop business case – NSIAC approval = Feasible 4
Feasibility of Standardization Plan
• • Feb 2009 - Committee to develop the plan March 2009 – RPMs provide written comments from PM and VP • • April 2009 – present results to NEI working group – present results to INPO SLT June 2009 – present business case to NSIAC 5
Collective Radiation Exposure
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Collective Radiation Exposure
Importance of the Goal / Why Reduce Dose?
• • • • Radiological Health ALARA - Regulatory Requirement Skilled Craft Availability Position for Future Revision to 10 CFR 20 Dose Limits 7
Industry Goal
• BWRs – 50% of the BWR units achieve 120 Rem (annualized cycle average) by end of 2010 • PWRs – 50% of the PWR units achieve 60 Rem (annualized cycle average) by end of 2010 8
US BWR Collective Radiation Exposure
Cycle Median Values 3 rd Quarter 2008
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US PWR Collective Radiation Exposure
Cycle Median Values 3 rd Quarter 2008
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BWR Outage Dose Performance
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2007 BWR
15 outages Avg.
– 193 rem Quartiles – 1st – 149 rem – Median – 163 rem – 3rd – 197 rem • • •
2008 BWR (Prelim)
16 outages Avg. – 173 rem Quartiles – 1st – 117 rem – Median – 151 rem – 3rd – 185 rem 11
PWR Outage Dose Performance
• • •
2007 PWR
35 outages Avg.
– 119 rem Quartiles – 1st – 78 rem – Median – 109 rem – 3rd – 148 rem • • •
2008 PWR (Prelim)
31 outages Avg. – 85 rem Quartiles – 1st – 64 rem – Median – 75 rem – 3rd – 105 rem 12
• •
INPO CRE Action Plan
Completed Items – CRE Dose Reduction Meetings • • June 2008 – All October 2008 – BWR Outage Dose – CRE Checklist – CRE Webcast Ongoing Items – Quarterly Newsletter / Benchmarking Contacts 13
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INPO CRE Action Plan – 2009/2010
Outage Dose Reduction Meetings – PWR Dose Reduction Mtg. – Jan. 27-28 – P/BWR Dose Reduction Mtg. – Jul. 20-24 • Cross-Discipline Meetings – 2009 Outage/Maintenance/Operations Managers Working Meetings • Assistance – Outage Visits – Identify major dose jobs / review ALARA plans 14
ALARA Observations
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CRE Areas For Improvement
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Benchmarking the Best Practices
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Dose Savings Successes – Project / High Impact Teams
Assemble teams – Water management – Shutdown sequence – Scaffolding – ISI – Fuel Floor (Reactor Assembly/Disassembly) – Containment/ Drywell Coordination – Major Projects/Modifications 18
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Dose Savings Successes – Project / High Impact Teams
Expectations – Start Early – ALARA is an iterative process – Incorporate the basics • Time • Distance • Shielding – Involve RP and Craft 19
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Dose Savings Successes – Project / High Impact Teams
Expectations (cont.) – Benchmark for additional improvements – Evaluate impacts of other jobs in the area • Scaffolding and shielding interferences • Crowded work area • Utilities • Laydown/staging areas 20
Dose Savings Successes – Team/Technology Considerations
• • • • • • • • Permanent shielding and scaffolding Permanent storage of shielding /scaffolding in containment/drywell Test, inspect, inventory equipment before taking it into containment Quick clips on mirror insulation Use of hydraulics for nut installation on components Laser scanning Cameras/Remote Monitoring Augmented demineralization / filtration 21
• • •
Dose Savings Successes – Help the Worker Succeed
Assign work based on expertise (e.g. shared resources may be more efficient than supplemental workers for certain tasks) Use mockups – Include RP technicians – Hold points – Emphasize ALARA considerations
Oversight and Coaching
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Dose Savings Successes – Work Package Details
Clear instructions (new tasks/ new workers) Maps, pictures showing the component location and area dose rates Comprehensive list of tools and equipment Check tools before entering higher dose areas Contingency planning Lessons from previous work 23
• • • •
Dose Savings Successes – The Schedule
Allocate time for mockups and ALARA briefings Logic Ties Use water-filled systems to provide shielding Flushing and decontamination 24
• • •
Dose Savings Successes – The Schedule (cont.)
Crud burst management – Soft shutdown – Cleanup to activity endpoint – Slow fill of reactor vessel minimizes crud transport (OE19775) Maximize cleanup system use – limit out of service time Cross-functional schedule review 25
Where Can I Find More Information and Benchmarking Contacts?
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Questions
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