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
July 28, 2023 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
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, Signed by Snyder, Amy on 07/28/23 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
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 N/A 30 min NRC LTP Team and L50 Site/Badging Korea Institute of Nuclear Safety (KINS) 0800 Welcome and J. Madigan 30 min NRC and KINS Pier North Introductions Conference Status of SONGS Room Decommissioning B. Sholler Project 0830 LTP Update 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 Pier North End State KINS Observation Conference Considerations Room and Partial Site Release Conceptual Plans 0930 Offshore Conduit 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 Pier North Plans KINS Observation Conference Room 1030 Updated 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 Pier North Hydrological Study and Randy Fedors Conference (Site Conceptual (optional KINS Hydro- Room Model) geologists) 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 - Contamination Greg NRC Staff Pier North 1400 Control, Discrete Chapman KINS Observation Conference Radioactive Bob Corbett Room Particles 1400 - Break: Stephanie Jane Marshall, Pier North 1430 Region IV Anderson, Division Director, Conference Inspection Sr. Inspector DUWP; Inspection Room Entrance Meeting Team NRC and KINS observers 1430 - Review of the Day NRC and 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> Pier North 1530 Adjourn KINS Conference Room Attachment
2 Time Activity/Topic Presenters Duration Participants Location 0730 SONGS 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 Decommissioning Status/ issue dosimetry 0800 Site Tour and B. Sholler/C. 3.5 NRC and KINS Various Q&A Ahola hours 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