ML23206A206
| ML23206A206 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 07/28/2023 |
| From: | Amy Snyder Reactor Decommissioning Branch |
| To: | |
| Snyder A, 301-415-6822 | |
| Shared Package | |
| ML23206A206 | List: |
| References | |
| Download: ML23206A206 (6) | |
Text
LICENSEE:
Southern California Edison FACILITY:
San Onofre Nuclear Generating Station, Units 1, 2, and 3
SUBJECT:
SUMMARY
OF JULY 17-18, 2023, ROUTINE SITE VISIT AT SAN ONOFRE NUCLEAR GENERATING STATION, UNITS 1, 2, AND 3 On July 17, 2023, U.S. Nuclear Regulatory Commission (NRC) staff from Headquarters visited the San Onofre Nuclear Generating Station (SONGS), Units 1, 2, and 3. The purpose of the site visit was for the NRC License Termination Plan (LTP) technical team to:
- 1) tour the site to get a better understanding of the site layout and the relationships between facility structures, natural and engineered land features, and the ocean since their last visit in February 2022 (ML22062B645)
- 2) obtain an understanding of the licensees Southern California Edisons (SCEs) status of its characterization progress and plans particular to Unit 1 and subsurface
Amy Snyder, Senior Project Manager Greg Chapman, Health Physicist, CHP Randall Fedors, Senior Hydrogeologist Cynthia Barr, Senior Performance Analyst (remote)
SCE and Contractors:
James Madigan, et al., SCE Steven Mannon, et al., AECOM Sarah Roberts, et al., EnergySolutions Items Reviewed by NRC or discussed with SCE:
Before the site visit, the NRC Project Manager and the SCE Licensing Manager developed the agenda (see attachment 1). The agenda also includes the meeting participants. The July 28, 2023
2 NRC & Korea Institute of Nuclear Safety (KINS) Bilateral meeting was conducted at SONGS from July 17-July 20, 2023. The KINS regulators participated as observers in this site visit on July 17 through midday on July 18, 2023.
Topics that were new from the last NRC LTP technical team site visit were:
Location of the intake and discharge conduits/structures and any onshore structures and plans and timing of their removal
The subsurface and Unit 1 areas planned for near-term radiological characterization survey and sampling and analysis strategy
Intermediate stage before final license termination conceptual strategy
Groundwater program and analyses status
Discrete Radioactive Particle contamination control at reactor decommissioning sites
Overall LTP license amendment request (LAR) development schedule for resource planning purposes On the first day, the meeting began with a site safety briefing, and introductions were made.
SCE and its contractor, SDS, and subcontractor, EnergySolutions, provided an overview of the decommissioning project, including Federal, State, and local interests in the project; and intermediate and end state preliminary concept for unrestricted release. SCE then gave various presentations, as noted on the agenda.
SCE noted that the conduits are not part of the Unit 2 and 3 license. The NRC stated that in such cases, if there is licensed material residual radioactivity offsite for a Part 50 license, then the licensee would be required to provide information to the NRC for evaluation that there is no health and safety issue.
Regarding characterization of subsurface and Unit 1 areas, SCE stated that its characterization is an iterative process, and more data would be collected as remaining substructures are remediated, and structures are removed later in the project.
NRC stated that the LTP license amendment application (LAR) addresses end state.
Licensees should briefly discuss intermediate states in their LTPs, but detailed intermediate clean up criteria calculations should not be presented for approval.
SCE reviewed the status and plans for its groundwater input development to include sorption coefficient (Kd) measurements of a limited number of site media samples. The NRC staff noted that licensees that provide site-specific Kd values should include a range or average value for each appropriate solid media with uncertainty information.
SCE presented contamination control practices at the decommissioning project to include open air demolition plans, construction of negative pressure structures, and attention to identification and removal of any discrete radiological particles that might be generated due to prior or certain decommissioning-related activities such as reactor internal segmentation. For the latter, the NRC noted that an information notice is being developed for reactor sites addressing how licensees should document and incorporate technical survey data into their
3 decommissioning strategies to avoid potential delay in license termination. This information notice is expected to be published later this year.
SCE stated that the submittal of the SONGS LTP LAR is presently anticipated in the third quarter of calendar year 2024.
The second day in the morning, SCE provided a tour of SONGS, including visiting containment and a walkdown of various areas of the site to provide a better understanding of the end state concept for unrestricted release. The site walkdown included the forebay area, the power block area, upcoming work for the foundation of the turbine building, and the south yard facility.
The site visit resulted in no action items. Please direct any inquiries to me at (301) 415-6822 or amy.snyder@nrc.gov.
Sincerely, Amy M. Snyder, Senior Project Manager Reactor Decommissioning Branch Division of Decommissioning, Uranium Recovery and Waste Programs Office of Nuclear Material Safety and Safeguards Docket Nos.: 50-206, 50-361, 50-362,72-041 Attachments: Agenda, List of Participants Signed by Snyder, Amy on 07/28/23
Agenda and List of Participants July 17-18, 2023, Site Visit - San Onofre Nuclear Generating Station Travel Day Sunday July 16 Day 1: Monday July 17 Time Activity/Topic Presenters Duration Attendees Location 0730 Arrive on Site/Badging N/A 30 min NRC LTP Team and Korea Institute of Nuclear Safety (KINS)
L50 0800 Welcome and
Introductions
Status of SONGS Decommissioning Project J. Madigan B. Sholler 30 min NRC and KINS Pier North Conference Room 0830 LTP Update End State Considerations and Partial Site Release Conceptual Plans W. Barley 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> NRC Staff KINS Observation Pier North Conference Room 0930 Offshore Conduit Plans E. Goldin 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> NRC Staff KINS Observation Pier North Conference Room 1030 Updated Hydrological Study (Site Conceptual Model)
D. Randall 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> NRC: Amy Snyder and Randy Fedors (optional KINS Hydro-geologists)
Pier North Conference Room 1130 Lunch N/A 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> Pier North Conference Room 1300 -
1400 Contamination Control, Discrete Radioactive Particles Greg Chapman Bob Corbett NRC Staff KINS Observation Pier North Conference Room 1400 -
1430 Break:
Region IV Inspection Entrance Meeting Stephanie
- Anderson, Sr. Inspector Jane Marshall, Division Director, DUWP; Inspection Team NRC and KINS observers Pier North Conference Room 1430 -
1530 Review of the Day Adjourn NRC and KINS 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> Pier North Conference Room Attachment
2 Time Activity/Topic Presenters Duration Participants Location 0730 SONGS Decommissioning Status/ issue dosimetry SCE 0.5 hour5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> NRC and KINS Dosimetry 0800 Site Tour and Q&A B. Sholler/C.
Ahola 3.5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> NRC and KINS Various 1130 Lunch N/A 1.0 hour0 days <br />0 hours <br />0 weeks <br />0 months <br /> NRC and KINS Pier North Conference Room 1230 End of Meeting Adjourn
3 List of
Participants:
U.S. Nuclear Regulatory Commission:
Jane Marshall, Division Director, NMSS/DUWP (Mon & Tue)
Bruce Watson, CHP, NMSS/DUWP (Sun - Fri)
Amy Snyder, Senior Project Manager, DUWP/RDB (Sun-Tues)
Greg Chapman, CHP, PE, Sr. Health Physicist, DUWP/RDB (Sun-Fri)
Randall Fedors, Sr. Hydrogeologist, DUWP/RDB (Sun-Tues)
Shaun Anderson, Chief, DUWP/RDB (Sun - Fri)
Nathan Fuguet, New Staff/DUWP/RDB (Sun - Fri)
Cynthia Barr, Sr. Risk Analyst, Risk and Technical Analysis Branch, NMSS/DUWP (Virtual Monday only)
William (Chris) Allen, Project Manager, DUWP/RBD(Mon-Tues)
Korea Institute of Nuclear Safety:
Haiyong Jung, Principal Researcher, Department of Radiation Protection & Radioactive Waste Safety
Jeongken Lee, Principal Researcher, Department of Radiation Protection & Radioactive Waste Safety
Yoonji Lee, Senior Researcher, Department of Radiation Protection & Radioactive Waste Safety
Jonghyun Kim, Senior Researcher, Department of Radiation Protection & Radioactive Waste Safety
Jiyoon Jung, Senior Researcher, PM, Decommissioning & Spent Fuel Regulation Southern California Edison
Ronald Pontes, General Manager, Environmental/Waste and Radiation Protection
James Madigan, Manager, Regulatory Affairs, Nuclear Oversight & Safety Culture
Mark Morgan, Regulatory Affairs
Julie Holt (Site Coordinator), Public Outreach and VIP Tours
Sandra Sewell, Manager, Radiation Protection and Waste Contract Management
Bill Barley, Manager, Site Closure
Eric Goldin, Project Manager, License Termination Plan
Chris Ahola, Radiological Controls, Contract Management Specialist
Emery Grohregin, Specialist, Final Status Survey\\
AECOM:
Steve Mannon, Decommissioning Director SDS
Participants:
Bob Sholler, Project Manager, License Termination/Final Status Survey
Dale Randall, Manager, License Termination/Final Status Survey
Bob Corbett, Radiation Protection Manager EnergySolutions:
Sarah Roberts, EnergySolutions, Radiation Protection Director
ML23206A206 via email OFFICE NMSS/DUWP/RDB NMSS/DUWP/RDB NMSS/DUWP/RDB NAME ASnyder SAnderson ASnyder DATE 07/28/23 07/25/23*
07/28/23