ML22290A057

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Summary of September 27-28, 2022, Routine NRC Site Visit to Discuss License Termination Plans
ML22290A057
Person / Time
Site: Oyster Creek
Issue date: 10/17/2022
From: Marlayna Vaaler Doell
Reactor Decommissioning Branch
To:
Holtec Decommissioning International
Doell M, 301-415-3178
References
Download: ML22290A057 (5)


Text

UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 October 17, 2022 LICENSEE: Holtec Decommissioning International, LLC (HDI)

FACILITY: Oyster Creek Nuclear Generating Station (OCNGS)

SUBJECT:

SUMMARY

OF SEPTEMBER 27-28, 2022, ROUTINE NRC SITE VISIT AT THE OYSTER CREEK NUCLEAR GENERATING STATION TO DISCUSS LICENSE TERMINATION PLANS AND OTHER TECHNICAL TOPICS On September 27 and 28, 2022, U.S. Nuclear Regulatory Commission (NRC) staff from Headquarters visited the OCNGS in Forked River, New Jersey (NJ). The purpose of the site visit was for the NRC License Termination Plan (LTP) technical team assigned to OCNGS to:

1. tour the site to gain a better understanding of the site layout and the relationships between facility structures, natural and engineered land features, and the surrounding waterways,
2. obtain an understanding of the licensees status regarding site characterization progress and future plans as they relate to informing the development of the LTP,
3. inquire about the planned schedule and potential complexities for LTP development.

NRC Staff:

Marlayna Doell, Project Manager Randall Fedors, Senior Hydrogeologist Cynthia Barr, Senior Systems Performance Analyst HDI and Contractors:

Jeff Dostal, OCNGS Site VP Tom Williamson, HDI Fleet LTP Project Manager Chris Messier, BHI, VP of Radiological Engineering Ed O'Brien, HDI Environmental Health and Safety Kevin Wolf, HDI Manager of Radiation Protection and Chemistry Jean Fleming, HDI Vice President, Licensing, Regulatory Affairs & PSA Bill Noval, HDI Director, Regulatory Affairs State of NJ Representative:

James McCullough, NJ Bureau of Environmental Radiation

Items Reviewed by NRC or Discussed with HDI:

In preparation for the site visit, the NRC staff participated in teleconferences with HDI on August 9, 2022, to discuss the OCNGS Historical Site Assessment and on September 13, 2022, to discuss the hydrogeologic model for the site. Before the site visit the NRC technical team also reviewed the OCNGS docket for technical reference material and documents of interest related to development of the LTP. The NRC provided HDI a list of potential items that the NRC staff would like to see or discuss during the OCNGS site visit, which included:

The areas planned for near-term radiological characterization survey and sampling including land areas and building structures, The technical basis for development of derived concentration guideline levels (DCGLs) including selection of parameters, exposure scenarios and pathways The technical basis for identification of radionuclides of concern (ROCs) to support license termination including the basis for deselection of ROCs Any areas of significant known radiological burials, leaks, or spills at the site (e.g., more significant releases or remedial activities that occurred during operation)

Site boundaries and air/groundwater monitoring locations Plans for leaving buried or embedded piping or metal penetrations in place Plans for release or reuse of site materials, including metal and rubblized concrete Methods for characterization of remaining subgrade structures Specific locations either on maps or drawings or photos, or on the site tour:

o Well locations, including purpose (e.g., monitoring or remediation) o Groundwater levels in relation to facility structures, including annual variations o Site areas with erosional features and erosion protection structures Sources and sinks (e.g., retention ponds and dewatering activities) including surface water/runoff locations during operations and expected changes over time Groundwater monitoring needs for US. Environmental Protection Agency/NRC Memorandum of Understanding (67 FR 65375) consideration Plans for packaging and shipping of wastes from decommissioning activities, including intent to recycle or free release as much of the facility materials as practical Methods for ensuring that decommissioning activities do not create the potential for discrete radioactive particles Methods for monitoring and controlling the release of effluents from the site Schedule for the OCNGS LTP development and submittal, if available The agenda for the two-day NRC site visit is provided in the attachment. On the first day, a site safety briefing was conducted, and introductions were made. HDI and contractor staff provided an overview of the decommissioning and license termination project, including state and local interest in the dismantlement of OCNGS, the proposed end state for unrestricted release, and high-level conceptual plans for the structure of the LTP.

An overview of the radiological site characterization activities planned, completed, and underway, as well as a discussion of ROCs, hard to detect radionuclides, DCGL development, and background radiation determination, took place before HDI conducted a site tour of OCNGS, including walk-downs of various elevation levels and areas of the site to provide a better understanding of the end state for unrestricted release.

On the second day additional presentations and discussions took place between HDI and NRC staff on groundwater monitoring, site hydrology, future plans and any existing NRC guidance available for recycling, release, or reuse of concrete to facilitate decommissioning activities, and dose modeling methodology. HDI committed to provide several of the OCNGS presentations, technical basis documents, and draft LTP chapters to the NRC staff for awareness via the already established HDI/NRC SharePoint portal.

Action items were also discussed to end the second day, and include the potential for HDI to request formal NRC review of the following items before formal submittal of the OCNGS LTP:

potential white paper on reuse of materials during decommissioning ROC technical basis document for alignment before LTP development development of DCGL technical basis document (land areas and above-grade buildings)

Additional interactions between HDI and NRC staff are planned between now and the proposed submittal of the OCNGS LTP in late 2023 in order to address the action items and ongoing discussion topics related to the licensees plan to decontaminate the site for unrestricted release. Future interactions may include additional teleconferences or site visits in advance of a formal LTP pre-submittal public meeting, and will be coordinated and documented as needed.

Please contact me with any inquiries at 301-415-3178 or via e-mail at marlayna.doell@nrc.gov.

Sincerely, Signed by Doell, Marlayna on 10/17/22 Marlayna V. Doell, Project Manager Reactor Decommissioning Branch Division of Decommissioning, Uranium Recovery and Waste Programs Office of Nuclear Material Safety and Safeguards Docket No. 50-219 Renewed License No. DPR-16

Enclosure:

Agenda and List of Participants

NRC Visit Agenda Oyster Creek Nuclear Generating Station License Termination Plan Monday, September 26th NRC Travel Day Tuesday, September 27th Site Overview Presentation - J. Dostal 0830 to 0930 Discussion 0930 to 1130 o Overview of Site Characterization Lunch 1130 to 1230 Discussion 1230 to 1430 o Radionuclides of Concern o Hard To Detect Determination o DCGL Development o Background Determination Site Tour - T. Williamson 1430 to 1630 Wednesday, September 28th Discussion 0830 to 1030 o LTP Chapter Draft Walkthrough Discussion 1030 to 1130 o Hydrogeology Follow Up Lunch 1130 to 1230 Discussion 1230 to 1330 o Concrete Characterization Discussion 1330 to 1430 o Dose Modeling Ad Hoc Discussions 1430 to 1630 Thursday, September 29th As Necessary/NRC Travel Attachment

ML22290A057 NMSS/DUWP OFFICE NMSS/DUWP/RDB NMSS/DUWP/RDB NMSS/DUWP/RDB

/RTAB NAME MDoell MD RFedors RF CBarr CB SAnderson SA DATE Oct 17, 2022 Oct 17, 2022 Oct 18, 2022 Oct 20, 2022