ULNRC-06119, Supplement to Request for Relaxation from NRC Order EA-12-051, Order Modifying Licenses with Regard to Reliable Spent Fuel Pool Instrumentation.

Supplement to Request for Relaxation from NRC Order EA-12-051, Order Modifying Licenses with Regard to Reliable Spent Fuel Pool Instrumentation.

ML14129A394
Person / Time
Site:	Callaway
Issue date:	05/08/2014
From:	Neterer D Ameren Missouri, Union Electric Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
EA-12-051, ULNRC-06119
Download: ML14129A394 (4)

Text

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._Ameren MISSOURI Callaway Plant May 08,2014 ULNRC-06119 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555-0001 Order No. EA-12-051 Ladies and Gentlemen:

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

FACILITY OPERATING LICENSE NPF-30 SUPPLEMENT TO REQUEST FOR RELAXATION FROM NRC ORDER EA-12-051, "ORDER MODIFYING LICENSES WITH REGARD TO RELIABLE SPENT FUEL POOL INSTRUMENTATION"

References:

1. ULNRC-06113, "Request for Relaxation from NRC Order EA-12-051 Order Modifying Licenses with Regard to Reliable Spent Fuel Pool Instrumentation," dated April17, 2014 (ADAMS Accession No. ML14112A217)

2. Letter dated December 11,2013 from E. J. Leeds, USNRC, to Adam C. Heflin, Union Electric Company, "Callaway Plant Unit 1 -Relaxation of the Schedular Requirements for Order EA-12-049, ' Issuance of Order to Modify Licenses with Regard to Requirements for Mitigation Strategies for Beyond Design Basis External Events'"

(ADAMS Accession No. ML13319A668)

Reference 1 transmitted a request for relaxation of the requirements contained in Order EA-12-051 which was immediately issued by the U. S. Nuclear Regulatory Commission (NRC) to Union Electric Company (dba Ameren Missouri) on March 12, 2012 for Callaway Plant. On April25, 2014, a phone call was held between the Callaway Plant and the NRC to discuss the Reference 1 submittal. The purpose of this letter is to provide additional information requested during the phone call.

Callaway Plant is requesting relaxation from NRC Order EA-12-051, specifically Attachment 2, Section 1.6 which discusses power supplies for spent fuel pool level instrumentation (SFPI). The Order states that permanently installed instrumentation channels shall be powered by a separate power supply, independent of the plant's ac and de power distribution systems, such as portable generators and replaceable batteries. The design of Callaway's SFPI system is powered by large batteries which

• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • PO Box 620 Fulton, MO 65251 AmerenMissouri.com

ULNRC-06119 May08, 2014 Page2 are not expected to be easily replaceable, and will require recharging after 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />. Portable generators will be utilized to recharge the batteries, and are a part of Callaway's FLEX strategies per NRC Order EA-12-049. By Reference 2, Callaway obtained schedule relaxation for NRC Order EA-12-049 regarding FLEX strategies. With this relaxation, Callaway's FLEX strategies will not be fully implemented until Spring of 2016. Therefore, in accordance with the provisions ofSection IV of the Order, Ameren Missouri requests relaxation of the requirement described in NRC Order EA-12-051, , Section 1.6.

Should you have any questions concerning the content of this letter, please contact Scott Maglio, Regulatory Affairs Manager, at 573-676-8719.

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

Sincerely, Executed on: 5"-i'-cJOJt.{

David W. Neterer Vice President, Nuclear Operations

ULNRC-06119 May08, 2014 Page 3 cc: Mr. Marc L. Dapas 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. Fred Lyon Project Manager, Callaway Plant Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Mail Stop 0-8B1 Washington, DC 20555-2738 Mr. Eric Leeds Director, Office ofNuclear Reactor Regulation U.S. Nuclear Regulatory Commission Mail Stop 0-13H16M Washington, DC 20555-0001 Mr. Jack Davis Director, Mitigation Strategies Directorate Office ofNuclear Reactor Regulation U. S. Nuclear Regulatory Commission Washington, DC 20555-0001

ULNRC-06119 May 08,2014 Page4 Index and send hardcopy to QA File A160.0761 Hardcopy:

Certrec Corporation 4150 International Plaza Suite 820 Fort Worth, TX 76109 (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 Other Situations ULNRC Distribution:

F. M. Diya D. W. Neterer B. L. Cox L. H. Graessle S. A. Maglio Corporate Communications NSRB Secretary T. B. Elwood J. L. Fortman J. T. Patterson D. M. Stepanovic E. M. Ptasznik STARS Regulatory Affairs Mr. John O'Neill (Pillsbury Winthrop Shaw Pittman LLP)

Missouri Public Service Commission