ULNRC-06721, Fifth (Post-Audit) Supplement Request for License Amendment and Regulatory Exemptions for a Risk-Informed Approach to Address GSI-191 and Respond to GL 2004-02 (LDCN 19-0014)

Fifth (Post-Audit) Supplement Request for License Amendment and Regulatory Exemptions for a Risk-Informed Approach to Address GSI-191 and Respond to GL 2004-02 (LDCN 19-0014)

ML22068A028
Person / Time
Site:	Callaway
Issue date:	03/08/2022
From:	Mills K Ameren Missouri, Union Electric Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
Shared Package
ML22068A027	List: ML22068A029 ULNRC-06721, Fifth (Post-Audit) Supplement Request for License Amendment and Regulatory Exemptions for a Risk-Informed Approach to Address GSI-191 and Respond to GL 2004-02 (LDCN 19-0014)
References
EPID L-2021-LLA-0059, EPID L-2021-LLE-0021, GL 2004-02, GSI-191, LDCN 19-0014, ULNRC-06721
Download: ML22068A028 (5)

Text

Ameren Callaway Plant MISSOURI March 8, 2022 ULNRC-0672 1 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 FIFTH (POST-AUDIT) SUPPLEMENT TO REQUEST FOR LICENSE AMENDMENT AND REGULATORY EXEMPTIONS FOR A RISK-INFORMED APPROACH TO ADDRESS GSI-191 AND RESPOND TO GL 2004-02 (LDCN 19-0014)

(EPID L-2021 LLA 0059 AND EPID L-2021-LLE-0021)

On March 3 1, 2021, and per Reference 1 (included in the list of references on page 3 of this letter),

Ameren Missouri submitted a license amendment request (LAR), in combination with a request for regulatory exemptions, to the NRC in order to adopt a risk-informed approach to resolve GSI-19 1 and respond to GL 2004-02. Supplements to the Reference 1 LAR were submitted per References 2, 3, and 4.

In the letter identified as Reference 5, the NRC provided its plan for conducting an audit in regard to Ameren Missouris LAR (and exemption request), which included topics, discussion questions, and information requests (i.e., audit items) for the audit. The NRC then conducted the virtual audit from August 1 0 to August 12, 2021, with a concluding session on August 1 7, 2021. Following the audit, and per the letter identified as Reference 6, the NRC provided an audit summary to Ameren Missouri. In an appendix to the provided audit summary, a summary discussion of each audit item was provided, which included what additional information is needed for the audit item and whether a follow-up written response for the item/discussion point is needed. Responses, as required, to address the audit items/discussion points were provided in Enclosures 5 and 6 to the letter identified as Reference 7, except for audit item/discussion point 23 (due to additional time needed to complete the response).

The purpose ofthis letter is to provide the required response to audit item/discussion point 23, which is hereby provided in the attachment to this letter.

83 15 county Road 459 Steedrrian., sI 65077 iriierenl\\4issouri.corri

ULNRC-0672 1 March 8, 2022 Page 2 of 5 In regard to the EAR, it should be noted that the new/additional information reflected in the attachment to this letter has no impact on the No Significant Hazards Consideration conclusions reached in the EAR, nor does it change the conclusion regarding no need for an environmental assessment based on the categorical exclusion provisions of 1 0 CFR 51.22.

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

For any questions regarding this submittal, please contact Tom Elwood (Supervisor, Regulatory Affairs - Licensing) at (3 14) 225-1905.

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

S* cerely,

/%ii/;t% scs Keith A. Mills Director, Nuclear Regulatory Performance Signing for Manager, Regulatory Affairs (In accordance with APA-ZZ-00001 & APA-ZZ-00521 APPA)

Executed on: L2&74ICt4 %OL

Attachment:

Response to Audit Questionlltem 23 in NRC Letter Dated September 14, 2021 (ML21238A138)

ULNRC-0672 1 March 8, 2022 Page 3 of 5

References:

1.

Ameren Missouri letter ULNRC-06526, Request for License Amendment and Regulatory Exemptions for a Risk-Informed Approach to Address GSI-191 and Respond to GL 2004-02 (LDCN 19-0014), dated March 31, 2021 (ADAMS Accession No. ML21090A184) 2.

Ameren Missouri Letter ULNRC-06664, Supplement to Request for License Amendment and Regulatory Exemptions for a Risk-Informed Approach to Address GSI-191 and Respond to GL 2004- 02 (LDCN 19-0014), dated May 27, 2021 (ADAMS Accession No. ML21147A222) 3.

Ameren Missouri letter ULNRC-0665 1,

Supplement to Request for License Amendment and Regulatory Exemptions for a Risk-Informed Approach to Address GSI-191 and Respond to GL 2004- 02 (LDCN 19-0014), dated July 22, 2021 (ADAMS Accession No. ML21203A192) 4.

Ameren Missouri letter ULNRC-06692, Third Supplement to Request for License Amendment and Regulatory Exemptions for a Risk-Informed Approach to Address GSI-191 and Respond to GL 2004- 02 (LDCN 19-0014), dated October 7, 2021 (ADAMS Accession No. ML21220A379) 5.

NRC Letter to Ameren Missouri, Callaway Plant, Unit No. 1 Audit Plan and Setup of Online Reference Portal for License Amendment Request Regarding Risk-Informed Approach for Closure of Generic Safety Issue-191 (EPID L-2021-LLA-0059), dated July 23, 2021 (ADAMS Accession No. ML21197A063) 6.

NRC Letter to Ameren Missouri, Callaway Plant, Unit No. 1 Audit Summary for License Amendment Request and Regulatory Exemptions for a Risk-Informed Approach to Address Generic Safety Issue-191 and Respond to Generic Letter 2004-02 (EPID L-2021 LLA 0059 and EPID L-2021-LLE-002l), dated September 14, 2021 (ADAMS Accession No. ML21238A138) 7.

Ameren Missouri letter ULNRC-06690, Fourth (Post-Audit) Supplement to Request for License Amendment and Regulatory Exemptions for a Risk-Informed Approach to Address GSI-191 and Respond to GL 2004-02 (LDCN 19-0014) (EPID L-2021 LLA 0059 and EPID L 2021-LLE-0021), dated January 27, 2022 (ADAMS Accession No. ML22027A805)

ULNRC-0672 1 March 8, 2022 Page 4 of 5 cc:

Mr. Scott A. Morris Regional Administrator U. S. Nuclear Regulatory Commission Region IV 1 600 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. Mahesh Chawla Project Manager, Callaway Plant Office ofNuclear Reactor Regulation U. S. Nuclear Regulatory Commission Mail Stop O81A Washington, DC 205 55..000 1

ULNRC-0672 1 March 8, 2022 Page 5 of 5 Index and send hardcopy to QA file A160.0761 Hardcopy:

Certrec Corporation 6500 West Freeway, Suite 400 Fort Worth, 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 Distribution:

F. M. Diya T. E. Herrmann B. L. Cox F. J. Bianco S. P. Banker M. A. McLachlan K. A. Mills T. A. WiU R. C. Wink T. B. Elwood NSRB Secretary STARS Regulatory Affairs Mr. Jay Silberg (Pillsbury Winthrop Shaw Pittman LLP)

Ms. Claire Eubanks (Missouri Public Service Commission)

Mr. Aaron Schmidt (DNR)