ML13017A288

Request for Additional Information for Review Regarding the Steam Generator License Amendment Request to Revise Technical Specification for Permanent Alternate Repair Criteria

ML13017A288
Person / Time
Site:	Robinson
Issue date:	02/04/2013
From:	Billoch-Colon A Plant Licensing Branch II
To:	William Gideon Carolina Power & Light Co
Billoch-Colon A NRR/DORL/LPL2-2
References
TAC ME9448
Download: ML13017A288 (4)

Text

UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 February 4, 2013 Mr. William R. Gideon, Vice President Carolina Power & Light Company H.B. Robinson Steam Electric Plant, Unit 2 3581 West Entrance Road Hartsville, SC 29550

SUBJECT:

H. B. ROBINSON STEAM ELECTRIC PLANT, UNIT NO.2 - REQUEST FOR ADDITIONAL INFORMATION FOR REVIEW REGARDING THE STEAM GENERATOR LICENSE AMENDMENT REQUEST TO REVISE TECHNICAL SPECIFICATION FOR PERMANENT ALTERNATE REPAIR CRITERIA (TAC NO. ME9448)

Dear Mr. Gideon:

By letter to the U.S. Nuclear Regulatory Commission (NRC) dated August 29,2012 (Agencywide Documents Access and Management System Accession No. ML12251A363),

Carolina Power & Light Company (the licensee), doing business as Progress Energy Carolinas, submitted a license amendment request (LAR) for H.B. Robinson Steam Electric Plant, Unit 2.

The proposed LAR combines two changes that affect the same Technical Specification (TS) sections. The first part proposes to implement revisions consistent with Task Force-51 0, Revision 2, "Revision to Steam Generator Program Inspection Frequencies and tube Sample Selection." The second part proposes to permanently revise TS 5.5.9, "Steam Generator Program," to exclude portions of the steam generator tube below the top of the steam generator tubesheet from periodic inspections by implementing the permanent alternate repair criteria "H*."

The NRC staff is reviewing your submittal and has determined that additional information is required to complete the review. The specific information requested is addressed in the enclosure to this letter. During a discussion with your staff on January 16, 2013, it was agreed that you would provide a response 30 days from the date of this letter.

The NRC staff considers that timely responses to requests for additional information help ensure sufficient time is available for staff review and contribute toward the NRC's goal of efficient and effective use of staff resources.

W. Gideon -2 Please contact me at (301) 415-3302 or via e-mail at AraceILBilloch@nrc.gov if you have any questions.

Sincerely, Araceli Billoch Col6n, Project Manager Plant Licensing Branch 11-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-261

Enclosure:

Request for Additional Information cc w/encl: Distribution via ListServ

REQUEST FOR ADDITIONAL INFORMATION REGARDING H. B. ROBINSON STEAM ELECTRIC PLANT, UNIT 2 THE STEAM GENERATOR LICENSE AMENDMENT REQUEST TO REVISE TECHNICAL SPECIFICATION FOR PERMANENT ALTERNATE REPAIR CRITERIA DOCKET NO. 50-261 By letter to the U.S. Nuclear Regulatory Commission (NRC) dated August 29,2012 (Agencywide Documents Access and Management System Accession No. ML12251A363),

Carolina Power & Light Company (the licensee), doing business as Progress Energy Carolinas, submitted a license amendment request (LAR) for H.B. Robinson Steam Electric Plant, Unit 2 (HBRSEP). The proposed LAR combines two changes that affect the same technical specification (TS) sections. The first part proposes to implement revisions consistent with Technical Specification Task Force-51 0, Revision 2, "Revision to Steam Generator Program Inspection Frequencies and tube Sample Selection." The second part proposes to permanently revise TS 5.5.9 "Steam Generator Program" to exclude portions of the steam generator tube below the top of the steam generator tubesheet from periodiC inspections by implementing the permanent alternate repair criteria "H*." to the letter dated August 29,2012, is a Westinghouse letter (LTR-SGMP-12-30 dated May 7, 2012) addressing the applicability of H* and the recommended leakage factor for HBRSEP, given the fact that HBRSEP has implemented a Measurement Uncertainty Recapture Power Uprate.

On pages 2 and 3 of Attachment 6, two tables from the references within Attachment 6 are reproduced. Upon review of the table on page 2, and comparison to Tables 5-1 and 9-5 of WCAP-17091-P (which is Reference 3 of Attachment 6), it is not clear if the hot leg temperature provided in these three tables represents a low Tavg , a high T avg, or a nominal T avg condition for HBRSEP. As it appears that hot leg temperature has a Significant effect on secondary pressure (e.g., see the large secondary pressure change between high Tavg to low Tavg at Turkey Point Units 3 and 4 in Table 9-5).

The NRC staff requests the following additional information related to your submittal:

1. Determine the low Tavg and high Tavg hot leg temperatures for HBRSEP. Then determine if the differential pressure across the tubesheet for HBRSEP continues to be bounded by the H* analysis for Turkey Point Units 3 and 4, when the low Tavg hot leg temperature is used in the HBRSEP H* analysis.

2. Provide the results of the above requested analysis.

Enclosure

ML13017A288

• Memo Dated OFFICE LPL2-2/PM LPL2-2/LA(iT) LPL2-2/LA DE/ESGB LPL2-2/BC LPL2-2/PM NAME ABillochColón FKeith BClayton GKulesa* JQuichocho ABillochColón DATE 1/29/13 1/30/13 1/29/13 12/20/12 2/4/13 2/4/13