ULNRC-06803, Submittal of Response to Request for Additional Information Regarding Results of Steam Generator Tube In-Service Inspection
| ML23088A131 | |
| Person / Time | |
|---|---|
| Site: | Callaway  |
| Issue date: | 03/29/2023 |
| From: | Witt T Ameren Missouri, Union Electric Co |
| To: | Office of Nuclear Reactor Regulation, Document Control Desk |
| Shared Package | |
| ML23088A130 | List: |
| References | |
| ULNRC-06803, EPID L-2022-LRO-0143 | |
| Download: ML23088A131 (1) | |
Text
Callaway Plant MISSOURI March 29, 2023 ULNRC-06803 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington. DC 20555-000 1 10 CFR 50.36 Ladies and Gentlemen:
DOCKET NUMBER 50-483 CALLAWAY PLANT UNIT 1 UNION ELECTRIC CO.
RENEWED FACILITY OPERATING LICENSE NPF-30 RESPONSE TO REQUEST FOR ADDITIONAL INFORMATION REGARDING RESULTS OF STEAM GENERATOR TUBE IN-SERVICE INSPECTION
References:
1 Ameren Missouri letter ULNRC-06773, Results of Steam Generator Tube In-Service Inspection, dated November 1, 2022 (ADAMS Accession No. ML22305A680) 2.
NRC Letter, Final
- Request for Additional Information
- Callaway Plant, Unit I SG Inspection Report Review - EPID: L-2022-LRO-0143, transmitted via e-mail on March 13, 2023 (ADAMS Accession No. ML23073A026)
By letter dated November 1, 2022 (Reference 1), Ameren Missouri (Union Electric) provided the results ofthe most recent steam generator tube in-service inspection performed at Callaway Plant, which was performed during Callaway Plants refuel 25 outage during the spring of 2022.
During its review of the Steam Generator Tube Inspection Report, the NRC staff determined that a request for additional information (RAT) is needed to complete its review. The NRC electronically transmitted the RAI to Ameren Missouri on March 13, 2023 (Reference 2) and requested that the response be provided within 30 days ofreceipt. Specifically, the NRC requested the location, orientation (iflinear), measured size (ifavailable), and voltage response for wear indication at the B and C Steam Generator tube support plates that were greater than or equal to 20% through-wall in depth. The response to the RAT is provided in the enclosure to this letter.
This letter does not contain new commitments.
8315 County Road 459 Steedman, MO 65077 AmerenMissouricorn
ULNRC-06803 March 29, 2023 Page 2 of 4 Ifthere are any questions, please contact Mr. Tom Elwood at 314-225-1905.
Sincerely, Todd A. Witt Manager, Regulatory Affairs
Enclosure:
Response to Request for Additional Information
- Callaway Plant, Unit 1
- SG Inspection Report Review
- EPID: L-2022-LRO-0 143 Attachments to the
Enclosure:
1.
Callaway Plant Unit 1 Steam Generator B TSP Wear Indications 20%
- 39%
Refuel Outage 25, April 2022 2.
Callaway Plant Unit 1 Steam Generator C TSP Wear Indications 20%
- 39%
Refuel Outage 25, April 2022
ULNRC-06803 March 29, 2023 Page 3 of 4 Enclosure cc:
Mr. Robert Lewis Regional Administrator U. S. Nuclear Regulatory Commission Region IV 1600 East Lamar Boulevard Arlington, TX 76011-4511 Senior Resident Inspector Callaway Resident Office U.S. Nuclear Regulatory Commission 8201 NRC Road Steedman, MO 65077 Mr. M. Chawla Project Manager, Callaway Plant Office ofNuclear Reactor Regulation U. S. Nuclear Regulatory Commission Mail Stop O8B1A Washington, DC 20555-000 1
ULNRC-06803 March 29, 2023 Page 4 of 4 Index and send hardcopy to QA File A160.0761 Hardcopy:
Certrec Corporation 6500 West Freeway, Suite 400 FortWorth,TX 76116 (Certrec receives ALL attachments as long as they are non-safeguards and may be publicly disclosed.)
Electronic distribution for the following can be made via Responses and Reports ULNRC Distribution:
F. M. Diya K. C. Scott D. E. Farnsworth T. A. Witt B. L. Jungmann T. B. Elwood K. J. Tipton C. Richardson NSRB Secretary STARS Regulatory Affairs Mr. Jay Silberg (Pillsbury Winthrop Shaw Pittman LLP)
Mr. Aaron Schmidt (DNR)
Missouri Public Service Commission