ML22228A241
| ML22228A241 | |
| Person / Time | |
|---|---|
| Issue date: | 08/16/2022 |
| From: | Kenneth See NRC/NRR/DEX/EXHB |
| To: | Eric Benner NRC/NRR/DEX |
| Rivera R | |
| References | |
| Download: ML22228A241 (3) | |
Text
MEMORANDUM TO:
Eric Benner, Director Division of Engineering and External Hazards Office of Nuclear Reactor Regulation FROM:
Kenneth R. See, Dam Safety Officer Division of Engineering and External Hazards Office of Nuclear Reactor Regulation
SUBJECT:
REQUEST FOR APPROVAL OF PROPOSED UPDATED RISK-INFORMED SCHEDULE FOR DAM SAFETY INSPECTIONS Under the capacity as the NRCs Dam Safety Officer, Kenneth R. See recently requested assistance from the Division of Risk Assessment (DRA) to perform an evaluation and provide recommendations on the ultimate heat sink (UHS) dam safety inspections conducted under the Dam Safety Program (DSP). This evaluation had the purpose of applying the principles of risk-informed decision-making (RIDM) to recommend changes, if needed, on the frequency of these inspections for each of the eight (8) nuclear power plant sites under the DSPs jurisdiction.
The report provided by DRA (ADAMS Accession No. ML22094A193) summarizes the staffs approach in the application of the five principles of RIDM to provide an integrated recommendation on changes to the frequency of UHS inspections. The DSP staff has assessed this report and agrees with the recommendations presented by DRA.
Based on the results from the RIDM approaches implemented for this evaluation, the subject matter experts from DRA, and the Dam Safety Officer, agree that the frequency of UHS dam safety inspections for two (2) of the nuclear power plant sites under the DSPs jurisdiction may be decreased to once every three (3) years. The remaining five (5) nuclear power plant sites will retain the current inspection frequency of once every two (2) years, as the evaluation demonstrated that this is the appropriate frequency for these facilities. The dam located at the uranium recovery site is not affected by this assessment and will continue to be inspected once every three (3) years.
Enclosure:
Recommendation for Changing the Inspection Frequency for Ultimate Heat Sink Dams Based on Principles of Risk-Informed Decision Making (ADAMS Accession No. ML22217A131)
CONTACT:
Kenneth R. See, NRR/DEX Richard Rivera, NRR/DANU 301-415-1508 301-415-7190 August 16, 2022 Signed by See, Kenneth on 08/16/22
E. Benner 2
The leadership team of the Division of Engineering and External Hazards (DEX) received a briefing on the processed followed by DRA for this evaluation and the resulting recommendations on July 27, 2022. Based on the information discussed, the DSP staff request that you provide approval on behalf of the Office of Nuclear Reactor Regulation executive members to update the inspection frequency of the sites under the DSPs jurisdiction, as detailed in the above referenced report. The approval for this update should be captured in a memorandum to the NRCs Dam Safety Officer.
Upon your approval, the DSP staff will coordinate the communication of the changes to the pertinent licensees via the corresponding licensing project managers from the Division of Operating Reactor Licensing (DORL).
ML22228A241 NRR-106 OFFICE NRR/DANU/UAL1 NRR/DEX/EXHB NAME RRivera KSee DATE 8/16/2022 8/16/2022