L-2013-134, Errata Corrections to FPL Letter L-2012-444

Errata Corrections to FPL Letter L-2012-444

ML13114A260
Person / Time
Site:	Turkey Point
Issue date:	04/08/2013
From:	Kiley M Florida Power & Light Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
L-2013-134
Download: ML13114A260 (5)

Text

Ir 0 FPL. April 8, 2013 L-2013-134 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, D.C. 20555 Re: Turkey Point Unit 3 and Unit 4 Docket Nos. 50-250 and 50-251 Errata Corrections to FPL Letter L-2012-444 A recent periodic review of records revealed minor errors in Florida Power & Light Company (FPL) Turkey Point Unit 3 letter, L-2012-444, dated December 19, 2012.

The purpose of this letter is to provide errata corrections for updating the submittal with corrected pages.

Attachment 1 identifies the specific pages of the correspondence that contain the minor errors, and a brief description of the corrections.

Attachment 2 provides errata corrections for letter L-2013-087.

Should there be any questions regarding this information, please contact Robert J. Tomonto, Licensing Manager at (305) 246-7327.

Michael Kiley Vice President Turkey Point Nuclear Plant SM Attachments cc: Regional Administrator, Region II, USNRC Senior Resident Inspector, USNRC, Turkey Point Plant Florida Power & Light Company A:-(W -

9760 S.W. 344' Street Homestead, FL 33035

L-2013-134 Attachment 1 Description of Errata Corrections FPL letter, L-2012-444, License Renewal Pressurizer Surge Line Welds Inspection Program, Response to Request for Additional Information, dated December 19, 2012. Pages 19 and 20 of Enclosure 1 of letter FPL L-2012-444, erroneously state that SIA Calculation Nos.

1100756.301, and 1100756.306 are proprietary SIA calculations. The corrected pages 19 and 20 are resubmitted herein in Attachment 2 as errata corrections.

L-2013-134 Attachment 2 Revised Pages for L-2012-444 Pages 19 and 20

°Q L-2012-444, Enclosure 1 Page 19 of 21

RAI 7

Background Section 1.0 of Attachment 1 to the submittal states that the critical weld locations of concern are the pressurizer surge line nozzle-to-safe-end weld and the hot leg surge line nozzle-to-pipe weld. Section 1.0 of Attachment 2 to the submittal states that, based on a comparison of geometry, material properties, and applicable loads, the results of the detailed evaluation of these critical locations bound the other weld locations on the pressurizer surge lines.

Issue The inspection interval for all of the pressurizer surge line welds within the scope of the program is based on the flaw tolerance evaluations for the two critical weld locations; however, the licensee did not provided a justification as to why these two weld locations bound locations for all other welds in the pressurizer surge lines. Also, the critical weld locations were not analyzed separately for each unit; therefore, it is not clear why the two critical locations are representative of those locations in each unit Reauest Justify that the flaw tolerance evaluations for the critical weld locations (i.e., the pressurizer surge line nozzle-to-safe-end weld and the hot leg surge line nozzle-to-pipe weld) bound all other welds in the pressurizer surge lines. In addition, justify why the two critical locations are representative of those locations in each unit.

Response to RAI #7:

The ASME Code,Section XI, Appendix L flaw tolerance evaluation was performed by Structural Integrity Associates (SIA) for Turkey Point Units 3 and 4 pressurizer surge line nozzle-to-safe-end and hot leg nozzle welds. The objective of this calculation was to determine the loading conditions that are applied to the nozzles including piping interface loads, pressure and thermal transients for the design number of cycles. The interface loads are forces and moments for Deadweight, Thermal, Operating Basis Earthquake (OBE), Safe Shutdown Earthquake (SSE), and stratification, and are applicable to both Turkey Point Units 3 and 4.

Based on input from the Teledyne Technical Report TR-5322-135, Reference 1, and the PIPESTRESS results generated by SIA, the Turkey Point Units 3 and 4 critical weld locations were determined. The interface loads for the pressurizer surge nozzle-to-safe end weld bound the other weld locations on the surge line that are in the proximity of this nozzle.

This has been documented in SIA Calculation No. 1100756.301, Reference 2.

Similarly, based on Teledyne Technical Report TR-5322-135, Reference 1, and the PIPESTRESS results generated by SIA, the interface loads for the hot leg surge nozzle bound the other weld locations on the surge line that are in the proximity of this nozzle. This has been documented in SIA Calculation No. 1100756.306, Reference 3.

L-2012-444, Enclosure 1 Page 20 of 21 The two critical locations are representative of those locations in each unit, since the transients developed for the analyses are basically insurge/outsurge transients, which apply to all the welds in the pressurizer surge lines. During insurge, the top temperature in the line ramps down to the hot leg temperature and during outsurge, the bottom temperature in the line ramps up to the pressurizer temperature.

References:

1. Teledyne Engineering Services, Technical Report TR-5322-135, Rev. 1, "USNRC I&E Bulletin 79-14 Analysis, Turkey Point Unit 3 & 4 Nuclear Power Plant, Pressurizer Surge Line (Inside Containment) Stress Problem 041." SI File No. 100756.203

2. SIA Calculation 1100756.301, Pressurizer Surge Nozzle Design Loads Calculation, 4/17/2012 (SIA Document)

3. SIA Calculation 1100756.306, Hot Leg Surge Nozzle Design Loads Calculation, 4/17/2012 (SIA Document)