ULNRC-06410, Response to Request for Additional Information Concerning Proposed Revision of FSAR-Described Compliance with Regulatory Guide 1.106 Regarding MOV Thermal Overload Protection (LDCN 16-0001)

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Response to Request for Additional Information Concerning Proposed Revision of FSAR-Described Compliance with Regulatory Guide 1.106 Regarding MOV Thermal Overload Protection (LDCN 16-0001)
ML18036A668
Person / Time
Site: Callaway Ameren icon.png
Issue date: 02/05/2018
From: Wink R
Ameren Missouri, Union Electric Co
To:
Document Control Desk, Office of Nuclear Reactor Regulation
Shared Package
ML18036A667 List:
References
LDCN 16-0001, ULNRC-06410
Download: ML18036A668 (4)
v • d • e


Text

Ameren MISSOURI Callaa Plant February 5. 2018 ULNRC-06410 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 RESPONSE TO REQUESTS FOR ADDITIONAL INFORMATION CONCERNING PROPOSED REVISION OF CALLA WAYS FSAR-DESCRIBED COMPLIANCE WITH REGULATORY GUIDE 1.106 REGARDING MOV THERMAL OVERLOAD PROTECTION (LDCN 16-0001)

By letter dated April 6.2017 (ADAMS Accession No. ML17097A425). Union Electric Company fdba Ameren Missouri) submitted a license amendment reqtiest (LAR) for the Callaway Plant. The proposed amendment would revise the FSAR description of Callaways compliance with NRC Regulatory Guide (RG) 1.106, Revision 1, Thermal Overload Protection for Electric Motors on Motor-Operated Valves. Specifically. FSAR Standard Plant Appendix 3A, Conformance to NRC Regulatory Guides, and FSAR Standard Plant Section 8.3.1.1.2.e.

480-V Motor Control Center Overcurrent Relaying, would be revised to incorporate a clear description of how Callaway complies with RG 1 .106 in regard to the control and/or bypassing of thermal overload protection (TOP) devices for motor-operated valves (MOVs) during routine/maintenance testing of such valves. The proposed change would allow MOV TOP devices to remain bypassed during routine valve stroke surveillances (such that the TOP bypass jumpers are not removed during such testing). which is not in strict compliance with RG 1.106.

During the review of the submitted LAR. the NRC staff determined that requests for additional information (RAIs) were needed to complete the review. The NRC transmitted RAIs to Ameren Missouri in electronic form on October 31. 2017, and requested that the responses be provided by January 24, 2018, which was extended to February 9, 2018 at the request of Ameren Missouri. Accordingly, the RAI responses are provided in enclosures to this letter.

P.O. Box 620 Fulton, MO 65251 AmerenMissouri.com

ULNRC-064 10 Febtuaiy 5, 2018 Page 2 of 4 This letter does not contain new commitments. If there are any questions. please contact Mr. Torn Elwood at 314-225-1905.

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

/ Roger C. Wink Manager, Regulatory Affairs Executed on:

Enclosures:

1. Responses to Requests for Additional Information
2. Response to Request for Additional Information item I .a
3. Response to Request for Additional Information item I .c
4. Response to Request for Additional Information item 1 .d (MOV Performance Indicator Report for Cycle 19)
5. Response to Reqtiest for Additional Information item I .d (MOV Performance Indicator Report for Cycle 20)
6. Response to Request for Additional Information item I .d (MOV Performance Indicator Report for Cycle 21)

ULNRC-064 10 February 5,2018 Page 3 of 4 cc: Mr. Kriss M. Kennedy Regional Administrator U. S. Nuclear Regulatory Commission Region IV 1600 East Lamar Boulevard Arlington. TX 7601 1-4511 Senior Resident Inspector Callaway Resident Office U.S. Nuclear Regulatory Commission

$201 NRC Road Steedman, MO 65077 Mr. L. John Ktos Project Manager. Callaway Plant Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Mail Stop 081-14 Washington. DC 20555-0001

ULNRC-064 10 February 5.2018 Page 4 of 4 Index and send hardcopy to QA F lie A160.0761 Hardcopy:

Certrec Corporation 6100 Western Place. Suite 1050 Fort Worth. TX 76107 (Certrec receives ALL attachments as long as they are non-safeguards and may be publicly disclosed.)

Eiectronic distribution for the foilowing can be made via Tech Spec ULNRC Distribution:

F. M. Diya I. F. I-Ierrmann S. P. Banker B. L. Cox L. H. Kanuckel S. 0. Kovaleski R. C. Wink I. B. Elwood M. G. Hoehn E. C. Olson T. L. Becker M. D. Haag D. Riegel Corporate Communications NSRB Secretary STARS Regulatory Affairs Mr. .Jay Silberg (Pillsbury Winthrop Shaw Pittman LLP)

Missouri Public Service Commission Mr. Steve feeler (DNR)

Mr. Dru Buntin (DNR)

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