PLA-6752, Replacement Steam Dryer Report, Start-Up, 114% Power Test Plateau

Replacement Steam Dryer Report, Start-Up, 114% Power Test Plateau

ML11280A262
Person / Time
Site:	Susquehanna
Issue date:	09/27/2011
From:	Kearney F Susquehanna
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
PLA-6752
Download: ML11280A262 (4)

Text

Faber A. Kearney PPL Susquehanna, LLC k I J Site Vice President 769 Salem Boulevard $ *

• I ,I Berwick, PA 18603 Tel. 570.542.2904 Fax 570.542.1504 ,

fakeamey@pplweb.com

% TM U. S. Nuclear Regulatory Commission Attn: Document Control Desk Mail Stop O-P 1-17 Washington, DC 20555-0001 SUSQUEHANNA STEAM ELECTRIC STATION REPLACEMENT STEAM DRYER REPORT, UNIT 2 START-UP, 114% POWER TEST PLATEAU PLA-6752 Docket No. 50-388 The purpose of this submittal is to provide the attached evaluation of PPL Susquehanna, LLC's (PPL) Susquehanna SES (SSES) Unit 2 steam dryer performance and flow induced vibration (FIV) based on the data collected at the 114% power test plateau as required by the following Operating License Conditions.

License Condition 2.C.(20)(b)(4) requires:

"After reaching full CPPU, PPL shall obtain measurements from the MSL strain gauges and establish the steam dryer flow-induced vibration load fatigue margin for the facility, update the dryer stress report, if required, and re-establish the limit curve with the updated ACM load definition and revised instrument uncertainty, which will be provided to the NRC staff."

License Condition 2.C.(20(b)(7) requires:

"PPL shall submit a CPPU steam dryer report to the NRC. The report will be issued following completion of Unit 2 ascension to 114 % CLTP. The report shall include evaluations or corrective actions that were required to assure steam dryer structural integrity. Additionally, it shall include relevant data collected at each power step, comparisons to performance criteria (design predictions), and evaluations performed in conjunction with steam dryer structural integrity monitoring."

Summary:

This report provides a summary of the SSES Unit 2 replacement steam dryer monitoring instrumentation (Main Steam Line [MSL] Strain Gage) and flow induced vibration measurements at the targeted 114.0% licensed thermal power (CLTP) test plateau (3952 MWth).

Document Control Desk PLA-6752 bcc: J.A. Bartos GENPL5, w/o att.

K. G. Browning GENPL4, w/o att.

D. L. Filchner GENPL4, w/o att.

P. A. Horn (SRC) NUCSB2, w/o att.

J. E. Krais NUCSB3, w/o att.

R. D. Pagodin NUCSB3, w/o att.

J. J. Petrilla, III NUCSA4, w/o att.

T. G. Wales (DBD) GENPL5, w/o att.

NRA File GENPL4, w/att.

DCS GENPL4, w/att.

Document Control Desk PLA-6752 The MSL strain gage data demonstrated that sufficient steam dryer margin (approximately 100%) to the ASME endurance limit of 13,600 PSI exists. The analysis of the piping accelerometer FIV data confirms that there is adequate margin to the ASME limits in the SSES Main Steam, Feedwater, and Reactor Recirculation system piping. contains proprietary information of PPL and is furnished in confidence solely for the purpose(s) stated in the report. No other use, direct or indirect, of the document or the information it contains is authorized. Furnishing this enclosure does not convey any license, expressed or implied, to use any patented invention or, except as specified above, any proprietary information of PPL disclosed herein or any right to publish or make copies of the enclosure without prior written permission of PPL.

The enclosed information contains proprietary information as defined by 10CFR2.390.

PPL, as the owner of the proprietary information, has executed the enclosed affidavit, which identifies that the enclosed proprietary information has been handled and classified as proprietary, is customarily held in confidence, and has been withheld from public disclosure. PPL hereby requests that the enclosed proprietary information be withheld from public disclosure in accordance with the provisions of 10CFR2.390.

The header on each page in this enclosure carries the notation "PPL Proprietary Information." PPL proprietary information is identified inside triple brackets.

{ ((This sentence is an example.(2)} } }. In each case, the superscript notation (2) refers to Paragraph (2) of the PPL affidavit, which provides the basis for the proprietary determination. Specific information that is not so marked is not PPL proprietary.

There no new regulatory commitments contained in this submittal.

If you have questions, please contact C. T. Coddington at (610) 774-4019.

Sincerely, F. A. Kearney - SSES Replacement Steam Dryer and Flow Induced Vibration Report, Unit 2 Start-Up, 114% Power Test Plateau, August 2011 - PPL Proprietary Information.

Document Control Desk PLA-6752 - SSES Replacement Steam Dryer and Flow Induced Vibration Report, Unit 2 Start-Up, 114% Power Test Plateau, August 2011 - Non-Proprietary Information. - Affidavit Copy: NRC Region I Mr. P. W. Finney, NRC Sr. Resident Inspector Mr. R. R. Janati, DEP/BRP Mr. B. K. Vaidya, NRC Project Manager