ML072670177
| ML072670177 | |
| Person / Time | |
|---|---|
| Site: | Fermi  |
| Issue date: | 09/20/2007 |
| From: | Detroit Edison |
| To: | NRC/FSME |
| References | |
| Download: ML072670177 (3) | |
Text
Detroit Edison Meeting with NRC Representatives NRC Headquarters September 20, 2007 Fermi 1 Decommissioning Project Opening Remarks II. Fermi 1 Reactor Vessel Disposition
@. Sodium Cooled Fast Breeder Reactor.
. Reactor experienced approximately 34 Effective Full Power Days of operation 5 Shutdown since 1972 e <350 Curies of activation per analysis 0, Recently awarded contract to Energy Solutions to remove, ship and dispose of reactor vessel
@i Reactor Vessel consists of upper reactor vessel (URV), transition section, lower reactor vessel (LRV) and transfer rotor plus internals.
, Plan is to separate the reactor vessel into large pieces.
e The LRV will be removed in its entirety, filled with grout, packaged in one container and shipped to Energy Solutions, Clive, Utah.
- Plan to average the concentration over the LRV including internals, since the LRV will be that portion of the reactor vessel that is placed in the disposal container being classified. Although the LRV including internals is comprised of multiple pieces, the LRV component is the discrete item per the BTP. The individual internals are not being cut or removed from the LRV.
e' Per Section 3.3 of the BTP, a component may be considered to be that portion of an original component that is placed in the disposal container being classified. Although components may be comprised of multiple sections of pieces to effectuate packing, the component (not the pieces or sections thereof) is the discrete item to which this guidance applies.
Q If each internal component was removed and packaged separately for disposal, based on the activation analysis, each component would be separately classified.
- , The total activity in the LRV is being averaged over the LRV, excluding voids. Based on the activation analysis, the LRV component would be classified as Class A.
@. Additional characterization data will be obtained and factored into the final classification.
@ Have analysis of composite smear of URV bathtub ring and from a control rod extension.
e_ Rough assessment is that if the composite smear is representative, LRV is still within Class A limits.
Additional smears including from LRV are being analyzed.
Some contamination will be removed when process sodium residues, so current values should be greater than disposal levels.
Fermi 1 Decommissioning Project Status September 20, 2007 Page 2 e Detroit Edison recognizes not traditional method of RPV classification and so questioned it internally.
Fermi 1 has significantly less operation and activation than typical.
@, Energy Solutions met with Utah Division of Radiation Control on the vessel classification method and followed up with an October 12, 2006 submittal.
Utah replied on November 6, 2006, referencing the BTP, addressing that classification may be based on radionuclide concentrations averaged over a component excluding major voids.
Utah letter stated generator has responsibility for determining component is adequately characterized to support classification determination.
@. Detroit Edison plans to contract an analysis of the intruder scenario for own use to confirm the LRV is suitable for shallow land burial.
e Recognize Utah is an Agreement State, however, NRC is Detroit Edison's regulator.
Z URV and other RV portions will also be disposed of at Energy Solution's Utah disposal site as Class A waste.
, Spent neutron source will be removed from reactor and disposed of at Barnwell prior to cutoff.
@* Reactor vessel to be removed and shipped in 2009.
III. License Termination Planning Concept Schedule Preparation 2008, submittal 1st quarter 2009
- Experienced LTP/Final Site Survey Engineer HSA underway
" Underground lines identified
" Review of logs complete
" History of buildings and systems mostly written
- Retiree luncheon held
¢ LTP kickoff meeting with NRC - January 2008
- e. What should be expected NRC review time of quality submittal?
Groundwater monitoring
" No detectable activity attributed to Fermi I
" Monitored -2 years
" Added wells due to direction of flow SE vs. E as originally expected
" Final report complete Fermi 1 site for license termination is area of Fermi 1 foot print as agreed in 2000 e Fermi I area remains part of Fermi 2 Owner Controlled Area after license termination.
Z Initial meeting held with Michigan historical presentation office, follow-up and historical review needed.
Fermi I Decommissioning Project Status September 20, 2007 Page 3 IV. Decommissioning Project Status and Cost
' Decision made to proceed with decommissioning
. Notification letter submitted August 27, 2007 Schedule currently is to submit license termination request in 2011 License termination approval 2012 0 What is expected NRC review time?
a Cost for project estimated at $63M with $43M (nominal dollars) 2007 - 2012 S Presence of sodium necessitates unique solutions for equipment removal
@v Critical path
" Complete removing graphite blocks from rotating plug (2007)
" Remove neutron source (late 2007)
" Complete setting up reactor to process (late 2007 - early 2008)
" Process reactor residual sodium (2008)
" Complete setting up Loops 2 and 3 for processing (2007 - 2008)
" Process sodium remaining in Loops 2 and 3 (2008)
" Remove reactor, primary shield tank, primary pumps and heat exchangers (late 2008 - 2009)
" Remove other equipment (2007 - 2010)
" Clean and survey (2010 - 2011)
V. Concluding Remarks