university of michigan ford nuclear reactor documents... · michiganmemorial phoenix project -ford...
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Theodore Smith, NRC
Reactor Decommissioning Branch
Buffalo, New York
Division of Waste Management and Environmental Protection
University of Michigan
Ford Nuclear Reactor
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University of Michigan Michigan Memorial Phoenix Project - Ford Nuclear Reactor
Located in Ann Arbor, Michigan– 2 MW (thermal) heterogeneous core open pool reactor
– Integrated lifetime power = 17,868 MW-days.
Regulatory Milestones• 1957 – Reactor operations begin
• July 2003 - Shutdown
• December 2003 - Fuel shipped to US Department of Energy
• June 2004 – Decommissioning Plan (DP) submitted
• January 2006 – Revised DP submitted, D&D begins
• October 2007 –major structures removed, incl pool wall & floor
• December 2007- Last waste shipment completed
• April 2011 to Sept 2012 (8 total) - Partial Survey Plans Submitted
• October 2012 - partial survey plans approved by NRC
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University of Michigan Michigan Memorial Phoenix Project - Ford Nuclear Reactor
Schedule� Nov - Dec 2012 - Final Status Surveys
� Dec 3-7, 2012 – Confirmatory Surveys
� Early 2013 – Submit remaining survey plans (subsurface areas)
� Spring 2013 – NRC approve subsurface survey plans
� Late 2013 Terminate License
Cost Estimate = $14,400,000 US ($9,800,0000 est.)
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University of Michigan Michigan Memorial Phoenix Project - Ford Nuclear Reactor
Cost Overrun Factors– Total overrun = $4,600,000 US
1. Concrete removal of reactor pool walls & floor
� Based on proposed facility reuse
� Cutting and removal of 10,500 feet3 (~300 meter3) of high density concrete
� Effort increased due to embedded components� Capped pipe containing lead shot
� Unanticipated piping and conduct runs
� Movement of structural materials during cutting
� Added time & effort cost = $1,750,000
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University of Michigan Michigan Memorial Phoenix Project - Ford Nuclear Reactor
Cost Overrun Factors
2. Waste Disposal Costs
� One low level waste facility in US
� Market rates changed after initial estimate
� Initial estimate excluded rigging cost for concrete block loading
� Added cost = $1,100,000 US
3. Increased oversight, decreased productivity, & delays
� Thermal column assembly conditions
� Insurance requirements
� Reactor pool draining delays
� Added cost = $1,150,000 US
4. Contingency added = $600,000 US
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Schedule
� Nov - Dec 2012 - Final Status Surveys
� Dec 3-7, 2012 – Confirmatory Surveys
� Early 2013 – Submit remaining survey plans (subsurface areas)
� Spring 2013 – NRC approve subsurface survey plans
� Late 2013 Terminate License
Cost Estimate = $14,400,000 US ($9,800,0000 est.)
� Concrete removal of reactor pool walls & floor (based on proposed facility reuse
University of Michigan Michigan Memorial Phoenix Project - Ford Nuclear Reactor
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University of Michigan Michigan Memorial Phoenix Project – Ford Nuclear Reactor
Site History
• May 1959 – 3,600 gallon (13,500 L) pool water leak through beam port
• May 1961 – 1st & 2nd floors contaminated with Ag-110m
• June 1963 – Beam port collimator leak, contaminating 1st floor
• Sept 1967 – Fuel element failure identified by air sampling
• Oct 1967 – Ventilation system contaminated
• Oct 1971 – Argon-41 release due to beam port flooding
• Jan 1977 – Pneumatic tube failure releases fission products
• Dec 1977 – New pneumatic system generates airborne release
• April 1987 – Spill of 1 quart (1 L) of heavy water on 3rd floor
• Jan 1989 – Fuel element failure identified by pool water chemistry
• Nov 1991 – Fuel element failure identified by air monitoring
• July 1993 – 7,500 gallons (28,000 L) of low level radioactive water released through building foundation drain over 36 days
• May 1998 – 75 gallons (280 L) pool water leak from resin column
• March 2001 – 3rd floor contaminated by flux measurement device
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