ML15191A385

Fourth Inservice Inspection Interval, Second Inservice Inspection Period 2015 Owner'S Activity Report for RFO-23 Inservice Examinations

ML15191A385
Person / Time
Site:	Nine Mile Point
Issue date:	07/09/2015
From:	Orphanos P Exelon Generation Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
Shared Package
ML15191A406	List: ML15191A385 ML15191A387
References
NMP1L 3035
Download: ML15191A385 (12)

Text

This letter forwards proprietary information pursuant to 10 CFR 2.390.

The balance of this letter may be considered non-proprietary upon removal of Attachment 4.

SExe!.on Generation 10 CFR 50.55a NMP1 L 3035 July 9, 2015 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555-0001 Nine Mile Point Nuclear Station, Unit 1 Renewed Facility Operating License No. DPR-63 Docket No. 50-220

Subject:

Fourth Inservice Inspection Interval, Second Inservice Inspection Period 2015 Owner's Activity Report for RFO-23 Inservice Examinations Pursuant to 10 CFR 50.55a, Nine Mile Point Nuclear Station, LLC (NMPNS) hereby submits the attached Fourth Inservice Inspection Interval, Second Inservice Inspection Period, 2015 Owner's Activity Report for RFO-23 Inservice Examinations, for Nine Mile Point Unit 1 (NMP1).

The report is contained in Attachment 1 to this letter, and summarizes the results of examinations performed during the second refueling outage (RFO-23) of the Second Inservice Inspection Period of the Fourth Ten-Year Inspection Interval (August 23, 2009 through August 22, 2019).

This activity report meets the requirements of the American Society of Mechanical Engineers (ASME), Code Case N-532-4, "Alternative Requirements to Repair and Replacement Documentation Requirements and Inservice Summary Report Preparation and Submission as Required by IWA-4000 and IWA-6000, Section Xl, Division 1 ," as approved for use by Regulatory Guide 1.147, "Inservice Inspection Code Case Acceptability, ASME Section Xl, Division 1."

The calculation attached to this letter, "Nine Mile Point Unit 1 Steam Dryer Support Bracket Flaw Evaluation - 2014" delineates the flaw evaluation performed for the indications identified in the NMP1 steam dryer support brackets. The indications were initially reported in the 2011 Owner's Activity Report (OAR) for RFO-21 and are re-inspected during each refueling outage. The calculation was prepared by Structural Integrity Associates, Inc. and includes Electric Power Research Institute (EPRI) proprietary information. Attachment 2 to this letter contains the non-proprietary version of the calculation. Attachment 4 to this letter contains the proprietary version of the calculation.

The information provided by EPRI is considered proprietary information exempt from disclosure pursuant to 10 CFR 2.390. Therefore, on behalf of EPRI, NMPNS hereby makes application to withhold Attachment 4 from public disclosure in accordance with 10 CFR 2.390(b)(1). The affidavit from EPRI detailing the reason for the request to withhold the proprietary information is provided in Attachment 3.

There are no regulatory commitments contained in this letter.

NMP1 Owner's Activity Report for RFO-23 July 9, 2015 Page 2 Should you have any questions regarding the information in this submittal, please contact Dennis Moore, Regulatory Assurance Manager, at (315) 349-5219.

Sincerely, Peter M. Orphanos Site Vice President, Nine Mile Point Nuclear Station Exelon Generation Company, LLC PMO/BTV Attachments: (1) Fourth Inservice Inspection Interval, Second Inservice Inspection Period 2015 Owner's Activity Report for RFO-23 Inservice Examinations (2) Nine Mile Point Unit 1 Steam Dryer Support Bracket Flaw Evaluation - 2014 (Non-Proprietary)

(3) EPRI affidavit to request withholding of proprietary information contained in "Nine Mile Point Unit 1 Steam Dryer Support Bracket Flaw Evaluation -

2014" (4) Nine Mile Point Unit 1 Steam Dryer Support Bracket Flaw Evaluation - 2014 (Proprietary) cc: Regional Administrator, Region I, USNRC Project Manager, USNRC Resident Inspector, USNRC

Attachment 1 Fourth Inservice Inspection Interval, Second Inservice Inspection Period 2015 Owner's Activity Report for RFO-23 Inservice Examinations

FOURTH INSERVICE INSPECTION INTERVAL SECOND INSERVICE INSPECTION PERIOD 2015 OWNER'S ACTIVITY REPORT FOR RFO-23 INSERVICE EXAMINATIONS Prepared For Nine Mile Point Nuclear Station Unit 1 P.O. Box 63, Lake Road Lycoming, New York 13093 Commercial Service Date: December 26, 1969 NRC Docket Number: 50-220 Document Number: NMP1 -OAR-004-023 Revision Number: 00 Date: June 16, 2015 Prprdy k /

S Ronald P. Fabi /-MPNS __ r sure Test Prog 'am Owner Approved by: -6/5 Todd L. Davis - NMPNS IS! Back up Program Owner Approved by: V* 2 V Approed YJ~ykI tlento - NMPNS Senior NDE Technician/NDE Level Ill Approved by: )4,.ki */-,.*, "- *- -i Michael Faivu's - Manager Engineering Programs

Nine Mile Point Nuclear Station Unit 1 CNG-NMP1-OAR-004-23 FOURTH INSERVICE INSPECTION Rev. 00 Exelon INTERVAL Generation. 2015 OWNER'S ACTIVITY REPORT Date: JUNE 16, 2015 FOR INSERVICE EXAMINATIONS Page 2 of 9 TABLE OF CONTENTS Table of Contents............................................................................................................ 2 Record of Revision............................................................................................................ 3 Abstract......................................................................................................................... 4 Form OAR-i Owner's Activity Report for ASME Section XI Inspection & Testing Plans .............................. 6 Table 1 Items with Flaws or Relevant Conditions that Required Evaluation for Continued Service .................. 7 Table 2 Abstract of Repairs, Replacements, or Corrective Measures Required for Continued Service.............. 8

Nine Mile Point Nuclear Station Unit 1 CNG-NMP1-OAR-O04-23

• -*'FOURTH INSERVICE INSPECTION Rev. O00 Exeton INTERVAL Generation. 2015 OWNER'S ACTIVITY REPORT Date: JUNE 16, 2015 FOR INSERVICE EXAMINATIONS Page 3 of 9

" ~RECORD ,OF REVISION REVISION No.

DATE AFFECTED PAGES 1REASON FOR REVISION O00 JUNE 16, 2015 Entire Initial issue of Owner's Activity Report for ASME Document Section Xl Inservice Inspection, Containment Inservice Examinations, and Pressure Tests and Alternate Risk-Informed Inspection in accordance with the requirements of ASME Code Case N-532-4.

Nine Mile Point Nuclear Station Unit 1 CNG-NMP1-OAR-004-23 ExlnFOURTH INSER VICE INSPECTION Rev. 00 Generation. 2015 OWNER'S ACTIVITY REPORT Date: JUNE 16, 2015 FOR INSERVICE EXAMINATIONS Page 4 of 9 ABSTRACT ASME Section Xl Code Case N-532-4 requires submission of the Owner's Activity Report to the regulatory and enforcement authorities having jurisdiction at the plant site within 90 calendar days of the completion of each refueling outage.

This Owner's Activity Report summarizes the results of the Nine Mile Point Nuclear Station (NMPNS), Unit 1, American Society of Mechanical Engineers (ASME)Section XI In-service Inspection, Risk-Informed Inspection, Containment In-service Examinations, and Pressure Tests performed during Refueling Outage Twenty-Three (RFO-23), from March 16, 2015 through April 11, 2015, and the Second outage of the Second In-service Inspection Period that started on August 23, 2012 and is scheduled to end on August 22, 2016.

The attached Table 1 and 2 include flaws and conditions (those meeting the requirements of Code Case N-532-

4) identified since the last Owner's Activity Report following Refueling Outage RFO-22.

As an alternate to the requirements of the ASME, Boiler and Pressure Vessel Code (B&PVC), Section Xl, Article IWA-6000, NMPNS is implementing ASME Code Case N-532-4, Alternative Requirements to Repair and Replacement Documentation Requirements and In-service Summary Report Preparation and Submission as Required by IWA-4000 and IWA-6000, Section Xl, Division 1". Regulatory Guide 1.147, Revision 16, approved ASME Code Case N-532-4 for use. This Report complies with the requirements of Code Case N-532-4 and the conditions identified in RG 1.147.

OWNER'S ACTIVITY REPORTS - FORM OAR-i Owner's Activity Reports Form OAR-I's were prepared and certified upon completion of the Nine Mile Point Unit 1, 2015 refueling outage (RFO-23) examination activity in accordance with the following NMPNS inspection plans and schedules:

• CNG-NMPI-lSl-004, Fourth Ten-Year In-service Inspection Plan and Implementing Schedule, (includes the Alternate Risk-Informed Inspection Program aCNG-NMP1-CISI-002, Second Containment In-service Inspection Plan and Implementing Schedule.

• NMP1-PT-003, Inservice Pressure Testing Program Plan In addition to the Owner's Activity Report, Form OAR-i, the following Tables are also included:

a. Items with Flaws or Relevant Conditions that Require Evaluation for Continued Service, Table 1, provides a listing of item(s) with flaws or relevant conditions that required evaluation to determine acceptability for continued service, whether or not the flaw or relevant condition was discovered during a scheduled examination or test, and provides such information as Examination Category, Examination Item Number, Item Description, Flaw Characterization (as required by IWA-3300).

Nine Mile Point Nuclear Station Unit 1 CNG-NMP1-OAR-004-23 FOURTH INSERVICE INSPECTION Rev. 00 Exeton INTERVAL Genleration.o 2015 OWNER'S ACTIVITY REPORT Date: JUNE 16, 2015 FOR INSERVICE EXAMINATIONS Page 5 of 9

b. Abstract of Repairs, Replacements or Corrective Measures Required for Continued Service, Table 2, identifies those items containing flaws or relevant conditions that exceeded Division 1 acceptance criteria shall be provided with the information and format of Table 2. This information is required even if the discovery of the flaw or relevant condition that necessitated the repair/replacement activity did not result from an examination or test required by Division 1. If the acceptance criterion for a particular item is not specified in Division 1, the provisions of IWA-3100(b) shall be used to determine which repair/replacement activities are required to be included in the abstract.

In accordance with ASME Section Xl, IWB-2412(a), IWC-2412, IWD-2412 IWE-2412(a), and IWF-241 0(b) and with the exception of the examinations that may be deferred until the end of the inspection interval as specified in Table IWB-2500-1, IWC-2500-1, IWD-2500-1, IWF-2500-1 and IWE-2500-1, including those examinations which NMPNS has requested and received approval in the form of relief request, the required examinations in each examination category have been completed for the First In-service Inspection Period in accordance with Tables IWB-2412-1, IWC-2412-1, IWD-2412-1, IWE-2412-1, and IWF-2410-2.

Nine Mile Point Nuclear Station Unit 1 CNG-NMP1-OAR-004-23 o*"FOURTH INSERVICE INSPECTION Rev. 00

• "Exelorn INTERVAL Genera~ti0,. 2015 OWNER'S ACTIVITY REPORT Date: JUNE 16, 2015 FOR INSERVICE EXAMINATIONS Page 6 of 9 FORM OAR-i OWNER'S ACTIVITY REPORT As required by' the provisions of the ASME Code Case N-532-4 NMP1 -OAR-004-023 Report Number:

New York 13093 Point P. O.

Nuclear Box 63, Lycoming, Station, Nine Mile Plant Nine Mile Point Nuclear Station. P.O. Box 63. Lycoming. New York 13093 (Name and Address of Plant)

Plant Unit 1 Commercial Service Date December 26, 1969 Refueling Outage Number RFO-23 Current Inspection Interval 4th Interval for ISI & PT. 2 nd Interval for CISI August 23, 2009 to August 22, 2019 (1st, 2nd, 3rd, 4th, Other)

Current Inspection Period Second In-service lnsnection Period Auausit 23. 2012 to Auaoust 22.2016 (1st, 2nd, 3rd)

Edition and Addenda of Section XI applicable to the Inspection Plans 2004 Edition. No Addenda Date and Revision of Inspection Plans CNG-NMPI-ISI-004. Revision 02. June 30. 2014 (ISI). CNG-NMP1-CISI-002.

Revision 01. December 31. 2010 (Containment ISI), NMP1-PT-003 Revision 05. January 8. 2015 (Pressure Test)

Edition and Addenda of ASME Section Xl applicable to Repair/Replacement activities, if different than the Inspection Plan N/A (same Code Edition/Addenda)

(if applicable)

CERTIFICATE OF CONFORMANCE I certify that (a) the statements made in this report are correct; (b) the examinations and tests meet the Inspection Plan as required by the ASME Code,Section XI; and (c) the repair/replacement activities and evaluations supporting the completion of RFO-23 conform to the requirements of Section Xl.

(refueli~ng outage number)

Signed Date*7._*

Date *" ,/"7- 7_.O/3-"

(Manager Engineering Programs)

CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid com~mission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of A,1*tY*, and employed by -/..$:' e*S " of //#Ar/*,--. *7 - have inspected the items described in this" Owner's Activity Report and state th-at to the best of my knowledge and belief, the Owner has performed all activities represented by this report in accordance with the requirements of Section XI.

By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the repair/replacement activities and evaluation described in this report. Furthermore, neither the Inspector nor his employer shall be liable in any manner for any personal injury or property damage or a loss of any kind arising from or con(**

• etio~necedwib,*Commissions A,/*Z /3*5"/ ' A N /I*" Y/6".-361

,,'A)

National Board, State, Province, and Endorsements lnsl5ector's signature Date */* / '

,' jI

Nine Mile Point Nuclear Station Unit 1 CNG-NMP1-OAR-O04-23

-~FOURTH INSERVICE INSPECTION Rev. O00 SExelon INTERVAL Gen]eration. 2015 OWNER'S ACTIVITY REPORT Date: JUNE 16, 2015 FOR INSERVICE EXAMINATIONS Page 7 of 9 TABLE 1 ITEMS WITH FLAWS OR RELEVANT CONDITIONS THAT REQUIRED EVALUATION FOR CONTINUED SERVICE As required by the provisions of the ASME Code Case N-532-4 EVALUATION DESCRIPTION EXAMINATION ITEM ITEM CATEGORY NUMBER DESCRIPTION _____________________________

B-N-2 Bi13.30 Reactor Vessel Interior Issue Report IR # 02478934 documents the results of repeat Attachment Weld - inspections performed on four steam dryer support bracket vessel Beyond Beltline Region attachments to comply with the successive inspection requirements (Steam Dryer Support defined in IWB-2420(b). Relevant indications in the dryer support Bracket) brackets exceeding the acceptance criteria of IWB-3520.2 were reported in the previous 2011 and 2013 NMPi ISI Owner Activity Reports. Exelon re-inspected the four steam dryer support brackets during the Spring 2015 refueling outage using EVT-1 and a qualified UT tool and procedure. As in previous outages three brackets contained reportable UT and EVT-1 indications and one bracket contained only a reportable UT indication. The UT indications remain relatively shallow, continue to be located entirely within the bracket base metal and run parallel or away from the vessel attachment weld such that they are not considered a threat to propagate into and/or through the vessel attachment weld toward the vessel.

The Ni R23 UT data showed a small change in depth on all four brackets, with the depth changes in all cases being less than the minimum UT depth sizing uncertainty of 0.210 inches documented in the BWRVIP-03 demonstration. The UT data showed essentially no change in length, with the exception of one flaw that had a small reported change of 0.18 inches. This small length change is less than the one-cycle crack growth length of 0.852 inches assumed in the flaw evaluation.

Prior to the Ni1R23 re-inspections, NMP revised the previous Engineering Evaluation using the Ni R22 UT/EVT-1 data to allow two-cycles of operation. The revised supporting Engineering Evaluation concluded that the indications are acceptable for continued service for at least two additional operating cycles. In accordance with IWB-3144(b) the Engineering Evaluation of the Ni R23 exam results is submitted as an attachment to this Owner's Activity Report.

Nine Mile Point Nuclear Station Unit 1 CNG-NMP1-OAR-004-23

-* FOURTH INSERVICE INSPECTION Rev. 00

-***-*Exel0on INTERVAL Geriermllon, 2015 OWNER'S ACTIVITY REPORT Date: JUNE 16, 2015 FOR INSERVICE EXAMINATIONS Page 8 of 9 TABLE 2 ABSTRACT OF REPAIR/REPLACEMENT ACTIVITIES REQUIRED FOR CONTINUED SERVICE As required by the provisions of the ASME Code Case N-532-4 REPAIRIREPLACE DESCRIPTION MENT CODE ITEM OF DATE PLAN NUMBER CLASS DESCRIPTION WORK COMPLETED None Identified this Outage ______

I 4- 1 4-

Nine Mile Point Nuclear Station Unit 1 CNG-NMP1-OAR-004-23

'EetnFOURTH INSERVICE INSPECTION Rev. 00 Gen~era*o.i0 2015 OWNER'S ACTIVITY REPORT Date: JUNE 16, 2015 FOR INSERVICE EXAMINATIONS Page 9 of 9 END OF INSERVICE INSPECTION OWNER'S ACTIVITY REPORT FOR REFUELING OUTAGE TWENTY-THREE (RFO-23)