ULNRC-06764, Revised Response to Request for Additional Information Regarding License Amendment Request for Adoption Off Alternate Source Term and Revision of Technical Specifications (LDCN 21-0015)

Revised Response to Request for Additional Information Regarding License Amendment Request for Adoption Off Alternate Source Term and Revision of Technical Specifications (LDCN 21-0015)

ML22244A168
Person / Time
Site:	Callaway
Issue date:	09/01/2022
From:	Witt T Ameren Missouri, Union Electric Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
Shared Package
ML22244A167	List: ML22244A169 ULNRC-06764, Revised Response to Request for Additional Information Regarding License Amendment Request for Adoption Off Alternate Source Term and Revision of Technical Specifications (LDCN 21-0015)
References
LDCN 21-0015, ULNRC-06764
Download: ML22244A168 (5)

Text

Aiiieren MISSOURI Callaway Plant September 1, 2022 ULNRC-06764 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555-0001 10 CFR 50.90 Ladies and Gentlemen:

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

RENEWED FACILITY OPERATING LICENSE NPF-30 REVISED RESPONSE TO REQUEST FOR ADDITIONAL INFORMATION REGARDING LICENSE AMENDMENT REQUEST FOR ADOPTION OF ALTERNATE SOURCE TERM AND REVISION OF TECHNICAL SPECIFICATIONS (LDCN 2 1-00 15)

On September 28, 202 1 and per Reference 1 included in the list of references on page 3 of this letter, Ameren Missouri submitted a license amendment request (LAR) for adopting the alternative source term methodology addressed in 10 CFR 50.67 and Regulatory Guide 1 1 83, Rev 0, Alternative .

Radiological Source Terms for Evaluating Design Basis Accidents at Nuclear Power Reactors.

Following several letters related to the NRCs acceptance review of the LAR (including LAR supplements submitted by Ameren Missouri), a request for additional information (RAT) was electronically received (via e-mail) from the NRC on June 2, 2022 (Reference 2). Responses to the individual RAT requests/questions received on June 2, 2022, were provided in a letter submitted July 5, 2022 (Reference 3).

This letter is submitted to update Ameren Missouris response to RAT HFE-1 which was originally ,

provided in Reference 3 The updated response and justification are hereby provided in the enclosure to this letter.

In accordance with 10 CFR 50.91 Notice for public comment; State consultation, Section (b)(l), a copy of this supplement to the Reference 1 LAR and regulatory exemption request is being provided to the designated Missouri State official. This supplement was reviewed by the Callaway Plant Onsite Review Committee.

:::::::::::::::::::::::::::::::::::::::: 83 15 ounty Road 459 Steedrrian., I\I 65077 : i\riiereriivIissoiri.corri.

ULNRC-06764 September 1, 2022 Page 2 of 5 For any questions regarding this submittal, please contact Tom Elwood (Supervisor, Regulatory Affairs and Licensing) at (3 1 4) 225-1905.

I declare under penalty ofperjury that the foregoing is true and correct.

Sincerely, Todd A. Witt Manager, Regulatory Affairs Executed on: 7 - I

Enclosure:

Updated Response to RAT HFE-l

ULNRC-06764 September 1, 2022 Page 3 of 5

References:

1 . Ameren Missouri letter ULNRC-06636, License Amendment Request for Adoption of Alternate Source Term and Revision ofTechnical Specifications, dated September 28, 2021 (ADAMS Accession No. ML21272A168)

2. NRC letter, Final Request for Additional Information Callaway Plant, Unit 1 License Amendment Request for Adoption of Alternate Source Term and Revision of Technical Specifications EPID L-2021-LLA-01 77, transmitted via e-mail on June 2, 2022 (ADAMS Accession No. ML22154A012) 3 . Ameren Missouri letter ULNRC-06754, Response to Request for Additional Information Regarding License Amendment Request for Adoption ofAltemate Source Term and Revision ofTechnical Specifications, dated July 5, 2022 (ADAMS Accession No. ML22186A104)

ULNRC-06764 September 1, 2022 Page 4 of 5 cc: Mr. Scott A. Morris 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

$201 NRC Road Steedman, MO 65077 Mr. Mahesh Chawla Project Manager, Callaway Plant Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Mail Stop O81A Washington, DC 20555-0001

ULNRC-06764 September 1, 2022 Page 5 of5 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 Tech Spec ULNRC Distributiofl F.M.Diya B. L. Cox F. J. Bianco D. E. Farnsworth T. A. Witt T. B. Elwood B.D. Richardson R.J. Andreasen NSRB Secretary STARS Regulatory Affairs Mr. Jay Silberg (Pillsbury Winthrop Shaw Pittman LLP)

Ms. Claire Eubanks (Missouri Public Service Commission)

Mr. Aaron Schmidt (DNR)