ML20050H023
| ML20050H023 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 02/20/2020 |
| From: | GPU Nuclear Corp, TMI-2 Solutions |
| To: | Office of Nuclear Material Safety and Safeguards |
| K Conway | |
| References | |
| Download: ML20050H023 (17) | |
Text
Presented to the U.S. Nuclear Regulatory Commission February 20, 2020 Three Mile Island Unit 2 Environmental Regulatory Approach to TMI-2 Decommissioning NUCLEAR
NUCLEAR Purpose
- Introductions
- Provide brief history of TMI-2
- Accident, cleanup, PDMS
- Current setting
- Describe TMI-2Solutions/GPU Nuclear current evaluation on environmental compliance for transition to DECON
- Gather insight/feedback from NRC staff
- Discuss next steps 2
NUCLEAR
Introductions
3 Affiliation Name Title GPU Nuclear Greg Halnon President/Chief Nuclear Officer Mike Casey TMI-2 Project Manager Beth Wetzel Licensing Manager Jim Byrne Decommissioning Manager TMI-2Solutions Ron Worster TMI-2 Project Director Gerry van Noordennen V.P. Regulatory Affairs Kim Anthony Environmental Manager
NUCLEAR Brief History of TMI-2
- Construction permit November 1969
- Operating license February 1978
- Online December 1978
- Accident March 1979
- Cleanup and DOE acceptance of ~99% of damaged core material 1990
- Enter PDMS 1993 4
NUCLEAR Reg Approach to Accident Cleanup
- Programmatic Environmental Impact Statement (PEIS) and Supplements 1 - 3
- Analyzed four major activities
- 1. Building and equipment decontamination
- 2. Fuel removal and decontamination of the primary coolant system
- 3. Treatment of radioactive liquids
- 4. Packaging, handling, storage and transportation of radioactive wastes 5
NUCLEAR Reg Approach to Accident Cleanup
- PEIS Main Report: Occupational dose most significant environmental impact of cleanup
- PEIS Supplement 1 (1984)
- Re-evaluation of occupational dose and resulting health effects from cleanup
- PEIS Supplement 2 (1987)
- Updated environmental evaluation of accident-generated water disposal alternatives
- PEIS Supplement 3 (1989)
- Updated environmental evaluation of proposed cleanup effort, PDMS and alternatives 6
NUCLEAR Reg Approach to Accident Cleanup
- PEIS Supplement 3 alternatives included:
- Immediate or delayed cleanup of remaining 1% of accident waste
- Immediate or delayed full decommissioning
- Length of stay in PDMS
- No alternative superior, all bound by PEIS
- Delayed Cleanup Alternative
- Selected course of action
- PDMS followed by completion of cleanup 7
NUCLEAR TMI-2 Chronology 8
Dec. 30, 1978 Commercial Operations Mar. 28, 1979 LOCA Accident Sept. 14, 1993 POL issued Dec. 1993 Entry into PDMS CLEANUP OPERATIONS 1981 Programmatic Environmental Impact Statement 1984 Supplement 1: Occupational Radiation Dose 1987 Supplement 2: Accident-Generated Water 1989 Supplement 3: PDMS and Subsequent Cleanup PDMS
NUCLEAR TMI-2 Current Setting 9
Dec. 30, 1978 Commercial Operations Mar. 28, 1979 LOCA Accident Sept. 14, 1993 POL issued Dec. 1993 Entry into PDMS CLEANUP OPERATIONS 1981 Programmatic Environmental Impact Statement 1984 Supplement 1: Occupational Radiation Dose 1987 Supplement 2: Accident-Generated Water 1989 Supplement 3: PDMS and Subsequent Cleanup PDMS Entry into DECON Commencement of Phase 1b DECON Today
NUCLEAR TMI-2 Work Phases 10 TMI-2 DECON Phase 1b Phase 2 Phase 3 Phase 1a Today PDMS Phase 1a: Licensing, planning, engineering, transition (occurring now)
Phase 1b: Source term reduction (e.g., retrieval of remaining core debris)
Phase 2: Typical D&D, reduce licensed footprint to storage area only Phase 3: Core debris management, license termination, site restoration 1993
NUCLEAR 2020 Submittals 11 PDMS Entry into DECON DECON Today Between Today and entry into DECON, two submittals to NRC, each requiring environmental review:
- 1. PSDAR Rev. 4 Update decom activities and environmental impacts
NUCLEAR Environmental: Potential Pathways 12 TMI-2 DECON Phase 1b Phase 2 Existing Analyses (e.g., NUREG-0586)
Phase 3 Existing Analyses (e.g., NUREG-2157, NUREG-1496)
Today PDMS PSDAR CATEX LAR Approval PEIS Supplmt LAR EA
NUCLEAR Environmental: Proposed Pathway 13 TMI-2 DECON Phase 1b Phase 2 Existing Analyses (e.g., NUREG-0586)
Phase 3 Existing Analyses (e.g., NUREG-2157, NUREG-1496)
Today PDMS Phase 1b PSDAR CATEX LAR Approval PEIS Supplmt LAR EA
NUCLEAR Ongoing Evaluation of Current EISs
- Credit previously issued environmental analyses
- Compare existing analyses to current decommissioning plan, including:
- Scope of PEIS discussion
- Potential methods and technologies
- Potential changes in population
- Potential changed impacts
- e.g., T&E species, air quality impacts 14
NUCLEAR
- Decommissioning GEIS (NUREG-0586) issued in 1988, supplemented in 2002 decommissioning activities following shutdown of a facility after a major accident resulting in significant contamination of the site are outside the scope of this Supplement. For most types of accidents, decommissioning would be treated on a site-specific basis and, therefore, cannot be considered in a generic sense.
- However, endpoint of Phase 1b will be a radiological condition similar to an operating plant at the end of its operating life that has not undergone an accident
- Justification for reliance on GEIS will be provided in environmental reviews in PSDAR Rev. 4 and LAR submittals 15 Decom GEIS Applicability
NUCLEAR Submittal Schedule 16 Activity Date Submitted License Transfer Application Nov. 12, 2019 Submitted PSDAR Rev. 3 Dec. 12, 2019
- Submit PSDAR Rev. 4 Q4 2020
- Submit LAR (PDMS to DECON)
Q4 2020
- Q4 2020 submittals are contingent upon LTA approval and the closing date occurs as scheduled
NUCLEAR