ULNRC-06901, Concurrent Inoperability of Control Room Air Conditioning System Train and Opposite Train Emergency Diesel Generator Results in Condition Prohibited by Technical Specifications Limiting (Letter)

Concurrent Inoperability of Control Room Air Conditioning System Train and Opposite Train Emergency Diesel Generator Results in Condition Prohibited by Technical Specifications Limiting (Letter)

ML24275A212
Person / Time
Site:	Callaway
Issue date:	10/01/2024
From:	Witt W Union Electric Co
To:	Office of Nuclear Reactor Regulation, Document Control Desk
Shared Package
ML24275A211	List: 05000483/LER-2024-002, Concurrent Inoperability of Control Room Air Conditioning System Train and Opposite Train Emergency Diesel Generator Results in Condition Prohibited by Technical Specifications Limiting ULNRC-06901, Concurrent Inoperability of Control Room Air Conditioning System Train and Opposite Train Emergency Diesel Generator Results in Condition Prohibited by Technical Specifications Limiting (Letter)
References
ULNRC-06901
Download: ML24275A212 (1)

Text

rA/1I118I_Ofl Callaway Plant MISSOURI October 1, 2024 ULNRC-0690 1 U.S. Nuclear Regulatory Commission Attn

Document Control Desk Washington, DC 20555-0001 10 CFR 50.73 Ladies and Gentlemen:

DOCKET NUMBER 50-483 CALLAWAY PLANT UNIT 1 UNION ELECTRIC CO.

RENEWED FACILITY OPERATING LICENSE NPF-30 LICENSEE EVENT REPORT 2024-002-00 CONDITION PROHIBITED BY TECHNICAL SPECIFICATIONS The enclosed Licensee Event Report (LER) is submitted in accordance with 1OCfR5O.73(a)(2)(i)(B) to report a condition prohibited by Technical Specifications Limiting Condition for Operation (LCO) 3.0.3, LCO 3.7.11, Control Room Air Conditioning System (CRACS), and LCO 3.8.1, AC Sources Operating.

This letter does not contain any new commitments.

Sincerely, 1:1,%iP%t1L4 Fl ái(L Warren A. Witt Senior Director, Nuclear Operations and Plant Manager Enclosure LER 2024-002-00

$315 County Road 459 Steedman, MO 65077 AmerenMissouri.com

ULNRC-06901 October 1, 2024 Page 2 of 3 cc:

Mr. John Monninger 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

$2O1NRCRoad 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-06901 October 1, 2024 Page 3 of 3 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 LER ULNRC Distribution:

F. M. Diya K. C. Scott W. A. Witt J. G. Beck T. A. Witt T. B. Elwood A. M. Roselius Corporate Oversight NSRB Secretary Performance Improvement Coordinator Resident Inspectors (NRC)

STARS Regulatory Affairs Mr. Jay Silberg (Pillsbury Winthrop Shaw Piftman LLP)

Ms. Kathleen McNelis (Public Service Commission)

Ms. Claire Eubanks (Public Service Commission)