ML12024A027

Request for Additional Information on Inservice Testing

ML12024A027
Person / Time
Site:	Farley
Issue date:	02/02/2012
From:	Martin R Plant Licensing Branch II
To:	Ajluni M Southern Nuclear Operating Co
Martin R
References
TAC ME7511, TAC ME7512
Download: ML12024A027 (3)

Text

UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 February 2, 2012 M. J. Ajluni Nuclear Licensing Director Southern Nuclear Operating Company, Inc.

40 Inverness Center Parkway Post Office Box 1295, Bin - 038 Birmingham, AL 35201-1295

SUBJECT:

JOSEPH M. FARLEY NUCLEAR PLANT, UNITS 1 AND 2 (FNP) - REQUEST FOR ADDITIONAL INFORMATION (RAI) ON INSERVICE TESTING (TAC NOS.

ME7511 AND ME7512)

Dear Mr. Ajluni:

By letter dated October 28,2011 (Agencywide Documents Access and Management System (ADAMS), Accession No. ML113010346), Southern Nuclear Operating Company, submitted a request for relief from the quarterly inservice testing requirements for the FNP motor driven auxiliary feedwater pumps. The U.S. Nuclear Regulatory Commission staff has reviewed the information and has identified that additional information is needed to complete the review as stated in the enclosure.

We request that a response be provided within sixty (60) days of the date of this letter.

Sincerely,

~{!1~nager Plant Licensing Branch 11-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-348 and 50-364

Enclosure:

RAI cc w/encl: Distribution via Listserv

REQUEST FOR ADDITIONAL INFORMATION FOR RELIEF REQUEST RR-P-3. VERSION 2 JOSEPH M. FARLEY NUCLEAR PLANT, UNITS 1 AND 2 Additional information is requested regarding the letter dated October 28,2011, requesting relief from the quarterly inservice testing requirements for the Joseph M. Farley Nuclear Plant, Units 1 and 2 motor driven auxiliary feedwater pumps.

1. Provide the design flow rates for the four motor driven auxiliary feedwater (MDAFW) pumps. Also provide the expected flow rates through the 2-inch minimum flow line for the four MDAFW pumps.

2. Provide a pump curve(s) for the four MDAFW pumps. The pump curve(s) should be applicable to the pumps in their current conditions. Indicate on the curve(s) the points for the design flow rate and the expected flow rate through the 2-inch minimum flow line.

Explain how degradation will be detected from the Group A tests when the MDAFW pumps are operating at the expected flow rate through the 2-inch minimum flow line.

3. It is stated in the reference noted above that Southern Nuclear Operating Company, Inc.

engineering subsequently recommended a complete redesign of the 4-inch return line piping and support system if the return lines were to be used for full flow inservice testing for the MDAFW pumps. It is then stated that "Redesign and modification of these 4" return lines would result in a significant hardship with minimal increase in the level of quality and safety, since each MDAFW pump is tested every refueling outage at the maximum required accident flow rate during the Comprehensive Pump Test (CPT)."

Provide a more detailed explanation as to why the redesign and modification of the return lines would result in a significant hardship. Also explain how seven quarterly Group A pump tests at the pump design flow rate and a biennial CPT at the maximum required accident flow rate is a minimal increase in the level of quality and safety over seven quarterly Group A pump tests at the reduced flow rate and a biennial CPT at the maximum required accident flow rate.

4 In the reference noted above, it is stated that Alternative 2 will be applied no later than January 1, 2013, through November 1, 2017. The end of your fourth ten-year 1ST interval is November 30,2017. Explain why Alternative 2 will not be applied no later than January 1, 2013, through November 30, 2017, the end of your fourth ten-year 1ST interval.

Enclosure

February 2,2012 M. J. Ajluni Nuclear Licensing Director Southern Nuclear Operating Company, Inc.

40 Inverness Center Parkway Post Office Box 1295, Bin - 038 Birmingham, AL 35201-1295

SUBJECT:

JOSEPH M. FARLEY NUCLEAR PLANT, UNITS 1 AND 2 (FNP) - REQUEST FOR ADDITIONAL INFORMATION (RAI) ON INSERVICE TESTING (TAC NOS.

ME7511 AND ME7512)

Dear Mr. Ajluni:

By letter dated October 28, 2011 (Agencywide Documents Access and Management System (ADAMS), Accession No. ML113010346), Southern Nuclear Operating Company, submitted a request for relief from the quarterly inservice testing requirements for the FNP motor driven auxiliary feedwater pumps. The U.S. Nuclear Regulatory Commission staff has reviewed the information and has identified that additional information is needed to complete the review as stated in the enclosure.

We request that a response be provided within sixty (60) days of the date of this letter.

Sincerely, IRA!

Robert E. Martin, Senior Project Manager Plant Licensing Branch 11-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-348 and 50-364

Enclosure:

RAI cc w/encl: Distribution via Listserv DISTRIBUTION PUBLIC LPL2-1 RtF RidsNrrDortLpl2-1 Resource RidsAcrsAcnw MaitCTR Resource RidsNrrDorlDpr Resource RidsRgn2MaitCenter Resource RidsNrrLASFigueroa Resource RidsOgcRp Resource RWolfgang, NRR RidsNrrPMFarley Resource

. N0.: ML12024A027 ADAMS A ccesslon *B emal'1 dated 1/11/12 OFFICE LPL2-1/PM LPL2-11LA DEIBC LPL2-1IBC LPL2-1IPM NAME RMartin SFigueroa AMcMurtray

• NSalgado RMartin DATE 01/24/12 01/24/12 101/11/12 01127112 2/2112 OFFICIAL RECORD COPY