ML13058A124

Request for Additional Information for the Review of the Callaway Plant, Unit 1, License Renewal Application, Set 24

ML13058A124
Person / Time
Site:	Callaway
Issue date:	03/29/2013
From:	Cuadradodejesus S License Renewal Projects Branch 1
To:	Heflin A Union Electric Co
CUADRADO, S 415-2946
References
TAC ME7708
Download: ML13058A124 (5)

Text

UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 March 29, 2013 Mr. Adam C. Heflin Senior Vice President and Chief Nuclear Officer Union Electric Company P.O. Box 620 Fulton, MO 65251

SUBJECT:

REQUEST FOR ADDITIONAL INFORMATION FOR THE REVIEW OF THE CALLAWAY PLANT, UNIT 1, LICENSE RENEWAL APPLICATION, SET 24 (TAC NO. ME7708)

Dear Mr. Heflin:

By letter dated December 15, 2011, Union Electric Company (Ameren Missouri) (the applicant) submitted an application pursuant to Title 10 of the Code of Federal Regulations Part 54 (10 CFR Part 54) for renewal of Operating License No. NPF-30 for the Callaway Plant, Unit 1 (Callaway). The staff of the U.S. Nuclear Regulatory Commission (NRC orthe staff) is reviewing this application in accordance with the guidance in NUREG-1800, "Standard Review Plan for Review of License Renewal Applications for Nuclear Power Plants." During its review, the staff has identified areas where additional information is needed to complete the review.

The staff's requests for additional information are included in the enclosure. Further requests for additional information may be issued in the future.

Items in the enclosure were discussed with Sarah G. Kovaleski, of your staff, and a mutually agreeable date for the response is within 30 days from the date of this letter. If you have any questions, please contact me by telephone at 301-415-2946 or bye-mail at Samuel.CuadradoDeJesus@nrc.gov.

Sincerely, a

uadra de~Z.

rojects Branch 1 Division of License Renewal Office of Nuclear Reactor Regulation Docket No. 50-483

Enclosure:

As stated cc w/encl: Listserv

CALLAWAY PLANT, UNIT 1 LICENSE RENEWAL APPLICATION REQUEST FOR ADDITIONAL INFORMATION, SET 24 RAI 2.3.3.20-1a

Background:

In its response to the staff's RAI 2.3.3.20-1, dated July 2,2012, the applicant provided additional information related to whether the following systems and components are within the scope of license renewal: fire suppression systems associated with the auxiliary boiler room, turbine building north area below turbine (EI. 2000'-0"), north area below turbine (EI. 2033'-0"), south area below turbine (EI. 2000-0"), and south area below turbine (EI. 2033'-0"), turbine generator bearing, condenser pit, and hydrogen seal oil unit. For the auxiliary boiler room fire suppression system, the applicant stated that the auxiliary boiler room is separated from adjoining safe-shutdown areas by 3-hour-rated 'fire barriers and contain no post-fire safe-shutdown equipment, circuits, or safety-related equipment; therefore, the fire water suppression system for the auxiliary boiler room is not within the scope of license renewal and is not subject to an AMR.

For the turbine building north area below turbine (EI. 2000'-0"), north area below turbine (EI. 2033'-0"), south area below turbine (EI. 2000-0"). and south area below turbine (EI. 2033'-0"), the applicant stated that there is no post-fire safe-shutdown or safety-related equipment in the turbine building. The applicant also stated that the fire water suppression systems for the turbine building locations above are for loss prevention and property protection only and are not required to meet the fire protection criteria of 10 CFR 50.48, "Fire protection."

Therefore, the applicant stated, the fire water suppression systems for these areas of the turbine building are not in scope for license renewal and are not subject to an AMR. For the turbine generator bearing, condenser pit, and hydrogen seal oil unit fire suppression systems, the applicant stated that these areas are separated from the adjacent auxiliary building by 3-hour-rated fire barrier walls. The applicant also stated that fire suppression systems and components in question are not within the scope of license renewal and subject to an AMR because these areas do not contain post-fire safe-shutdown equipment and a fire in this area will not prevent safe-shutdown.

Issue:

The staff 'finds that the applicant's analysis of fire protection regulations does not completely capture the fire protection systems, structures, and components (SSCs) required for compliance with 10 CFR 50.48. The applicant indicated that the fire suppression systems in question perform no intended function in support of the plant license renewal and, therefore, are excluded from the scope of license renewal and are not subject to an AMR. The staff finds this contrary to the Callaway FSAR which includes the original Callaway fire protection Safety Evaluation, NUREG-0830, "Safety Evaluation Report related to the operation of Callaway Plant, Unit No.1," dated October 1981, as part of the current licensing basis.

- 2 The staff therefore, does not agree with the applicant's proposed change to exclude the above fire suppression SSCs from the scope of license renewal. The staff finds that the above fire suppression SSCs should be within the scope of license renewal in accordance with 10 CFR 54,4(a)(3) because they are required for compliance with 10 CFR 50,48, requirements of Appendix A to Branch Technical Position Auxiliary and Power Conversion Systems Branch 9.5-1, "Guidelines for Fire Protection for Nuclear Power Plants, Docketed Prior to July 1, 1976,"

Regulatory Positions C.3.a and C.3.d. Additional information is needed on the basis of the applicant to exclude the above fire suppression SSCs from the scope of license renewal.

Request:

The staff requests the applicant to provide additional information on its basis to exclude from the scope of license renewal those SSCs in the fire suppression systems associated with the auxiliary boiler room, turbine building north area below turbine (EI. 2000'-0"), north area below turbine (EI. 2033'-0"), south area below turbine (EI. 2000-0"), and south area below turbine (EI. 2033'-0"), turbine generator bearing, condenser pit, and hydrogen seal oil unit. If these fire suppression SSCs are within the scope of license renewal please revise the LRA and boundary drawings accordingly.

March 29, 2013 Mr. Adam C. Heflin Senior Vice President and Chief Nuclear Officer Union Electric Company P.O. Box620 Fulton, MO 65251

SUBJECT:

REQUEST FOR ADDITIONAL INFORMATION FOR THE REVIEW OF THE CALLAWAY PLANT, UNIT 1, LICENSE RENEWAL APPLICATION, SET 24 (TAC NO. ME7708)

Dear Mr. Heflin:

By letter dated December 15, 2011, Union Electric Company (Ameren Missouri) (the applicant) submitted an application pursuant to Title 10 of the Code of Federal Regulations Part 54 (10 CFR Part 54) for renewal of Operating License No. NPF~30 for the Callaway Plant, Unit 1 (Callaway). The staff of the U.S. Nuclear Regulatory Commission (NRC or the staff) is reviewing this application in accordance with the guidance in NUREG~1800, "Standard Review Plan for Review of License Renewal Applications for Nuclear Power Plants." During its review, the staff has identified areas where additional information is needed to complete the review.

The staff's requests for additional information are included in the enclosure. Further requests for additional information may be issued in the future.

Items in the enclosure were discussed with Sarah G. Kovaleski, of your staff, and a mutually agreeable date for the response is within 30 days from the date of this letter. If you have any questions, please contact me by telephone at 301~415-2946 or by e~mail at Samuel. CuadradoDeJesus@nrc.gov.

Sincerely, IRA!

Samuel Cuadrado de Jesus, Project Manager Projects Branch 1 Division of License Renewal Office of Nuclear Reactor Regulation Docket No. 50-483

Enclosure:

As stated cc w/encl: Listserv DISTRIBUTION:

See next page ADAMS Accession No.: ML13058A124

• concurrence via e-mail OFFICE LA:DLRlRPB 1

• PM:DLRlRPB1 BC:DLR/RPB 1 PM:DLR/RPB1 NAME YEdmonds SCuadrado DMorey SCuadrado DATE 03/18/2013 03126/2013 03129/2013

SUBJECT:

REQUEST FOR ADDITIONAL INFORMATION FOR THE REVIEW OF THE CALLAWAY PLANT, UNIT 1, LICENSE RENEWAL APPLICATION, SET 24 (TAC NO. ME7708)

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