ML25325A088
| ML25325A088 | |
| Person / Time | |
|---|---|
| Site: | Fort Calhoun  |
| Issue date: | 11/21/2025 |
| From: | Marlayna Vaaler Doell Reactor Decommissioning Branch |
| To: | Pearson B Omaha Public Power District |
| References | |
| EPID L-2025-LLN-0012 | |
| Download: ML25325A088 (1) | |
Text
From:
Marlayna Doell To:
PEARSON, BENJAMIN P Cc:
Ross Wagner
Subject:
Fort Calhoun Station - Supplemental Information Needed for Acceptance of Requested Licensing Action Re: Final Status Survey Report for Phase 2 of the Final Status Survey Plan - L-2025-LLN-0012 Date:
Friday, November 21, 2025 2:01:00 AM Attachments:
FCS FSSR RSI Final.docx
- Ben,
By letter dated August 11, 2025 (Agencywide Documents Access and Management System (ADAMS)
Accession ML25224A124), Omaha Public Power District (OPPD, the licensee) submitted the Final Status Survey Report for Phase 2 of the Final Status Survey Plan for the Fort Calhoun Station, Unit 1 (FCS) to the U.S. Nuclear Regulatory Commission (NRC) for review and approval associated with meeting the radiological release criteria described in the NRC-approved FCS License Termination Plan (LTP). The purpose of this e-mail is to provide the results of the NRC staffs acceptance review of this request. The acceptance review was performed to determine whether the submittal contains sufficient technical information to allow the NRC staff to complete a detailed technical review. The acceptance review is also intended to identify any readily apparent deficiencies related to the characterization of the regulatory requirements or plant licensing basis.
The NRC staff has reviewed your submittal and concluded that the information delineated in the attachment to this email is necessary to enable the staff to make an independent assessment regarding the acceptability of the proposed Final Status Survey Report in terms of regulatory requirements for the protection of public health and safety and the environment. In order to make the submittal complete, the NRC staff requests that OPPD supplement the submittal to address the information requested in the enclosure by December 12, 2025. This will enable the NRC staff to begin its detailed technical review. If the information responsive to the NRC staffs request is not received by the above date, the submittal will not be accepted for review pursuant to 10 CFR 2.101, and the NRC will cease its activities associated with the Final Status Survey Report. If the submittal is subsequently accepted for review, you will be advised of any further information needed to support the staffs detailed technical review by separate correspondence.
The information requested and associated time frame in this letter were discussed with you on November 20, 2025.
If you have any questions, please contact me.
Marlayna
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Decommissioning Project Manager U.S. Nuclear Regulatory Commission NMSS/DUWP/RDB
Phone: 301.415.3178 Mobile: 440.668.7399 E-mail: marlayna.doell@nrc.gov
Office Location: Fulltime Telework from Kingsport, Tennessee!
Mail Stop: T-5A10
Fort Calhoun Station (FCS) Final Status Survey Report Review Request for Supplemental Information (RSI)
RSI-1 Submit the onsite and offsite characterization and remedial action support survey laboratory data used to determine the statistical data in Table 3-1 for Survey Units 4100, 4101, 9012, and 9014. Submit final status survey onsite and offsite laboratory sample data, along with ISOCS measurement results, for the same survey units to support the data quality assessment (DQA) review.
Rationale: Chapter 9 of MARSSIM recommends that the License Termination Plan (LTP) includes the DQA methods used to evaluate whether the collected data meets the survey objectives and are sufficient to demonstrate compliance. Section 5.5, Final Status Survey Data Assessment, outlines the key components of the DQA process. Laboratory and field measurement data for radionuclides are essential for a comprehensive evaluation of both the quality and quantity of data and are integral to the overall DQA.
RSI-2 Submit scanning survey results for Survey Units 4501 and 9014 to support the evaluation of scanning surveys and investigation levels.
Rationale: Guidance provided in MARSSIM, Section 5.5, recommends an integrated survey strategy for Class 3 survey units, including random measurements and scanning surveys. These surveys are used to identify locations within the survey unit that exceed an investigation level, so that these areas can undergo additional investigation to determine concentration, area, and extent of contamination. Table 5-33 of the LTP specified investigation levels by survey unit classification. Scanning results serve as a comparison point to the investigation levels and subsequent actions.
Supplemental Information Request to Support the FSSR Review:
RCSD-RA-LT-308, Radiation Survey with Pipe Detectors FC-21-001, Use of ISOCS for FSS of Basements at FCS FC-24-006, Ludlum 44-20 Detector Sensitivity FCSD-RA-LT-303, Final Status Survey Isolation and Control Measures Any Condition Reports associated with the identification of discrete radioactive objects in SU 9010 and SU 9011.