ML25085A051
| ML25085A051 | |
| Person / Time | |
|---|---|
| Site: | Crystal River  |
| Issue date: | 03/20/2025 |
| From: | William Allen Reactor Decommissioning Branch |
| To: | |
| References | |
| Download: ML25085A051 (1) | |
Text
(10-16-2023)
NRC FORM 699 U.S. NUCLEAR REGULATORY COMMISSION CONVERSATION RECORD Page 1 of 2 NRC Form 699 (10-16-2023)
NAME OF PERSON(S)/TITLE CONTACTED OR IN CONTACT WITH YOU See below.
DATE OF CONTACT 03/20/2025 EMAIL ADDRESS TELEPHONE NUMBER (301) 576-2976 TYPE OF CONVERSATION EMAIL TELEPHONE
INCOMING OUTGOING
ORGANIZATION Accelerated Decommissioning Partners Crystal River Unit 3 (ADP CR3)
DOCKET NUMBER(S) 50-302 LICENSE NAME AND NUMBER(S)
Crystal River Unit 3, License No. DPR-72 MAIL CONTROL NUMBER(S)
SUBJECT Clarification Call
SUMMARY
AND ACTION REQUIRED (IF ANY)
NRC
Participants:
Chris Allen, Kathryn Robertson-Demers, Randy Fedors, Craig Hendrickson and Shaun Anderson ADP CR3
Participants:
John Jernigan, Claude Wilbin, Bryant Akins, Billy Reid, Steward Bland, Marshall Blake and Chuck Burtoff When asked about the Table 3-3 values in the submittal attachments, ADP CR3 responded that the values in the table represent nominal a priori minimum detectable concentration for onsite gamma spectroscopy instrumentation. After NRC staff asked whether the detection level terms were used interchangeably, ADP CR3 said that the terms were not universally interchangeable. NRC staff explained that the term MDA was typically used for on-site analytical results and the term MDC was typically used for off-site analytical results.
ADP CR3 responded that some terms such as MDA and MDC are used interchangeably. Other terms represent a priori instrument sensitivities. Staff further noted that their understanding of the detection decision and unreliable but detected values is unclear without definitions for each of the terms used in different parts of the PSR submittal. The staff explained that, because their understanding of these acronyms was based on the Multi-agency Radiological Laboratory Analytical Protocols manual (NUREG-1576), more information would be needed. ADP CR3 committed to reviewing the submitted documents and clarifying the definitions of each term and its application. Regarding the guidance used for the indistinguishable from background analysis, ADP CR3 stated that NUREG-1757, Volume 2, Revision 1 was used (ML19029A018).
When staff inquired about the cobalt value associated with NIA-03-005, ADP CR3 responded that they had been unaware that this question would be asked, but they were willing to provide more insight after reviewing NAME OF PERSON DOCUMENTING CONVERSATION Chris Allen SIGNATURE AND DATE March 25, 2025
CONVERSATION RECORD (continued)
NRC FORM 699 (10-16-2023)
U.S. NUCLEAR REGULATORY COMMISSION Page 2 of 2 NRC Form 699 (10-16-2023)
LICENSE NAME AND NUMBER(S)
Crystal River Unit 3, License No. DPR-72 MAIL CONTROL NUMBER(S)
SUMMARY
AND ACTION REQUIRED (IF ANY) (Continued) the issue. The staff indicated that the reported value was significantly different from other Co-60 values associated with the NIA-03 analytical results and inquired as to whether this was a typographical error. Staff also informed ADP CR3 that the NIA-03-005 Co_60 result was included in their statistical analysis which could result in non-conservative statistical values. The staff apologized for the lack of communication. The call subsequently concluded at approximately 10:50 A.M.