RA-22-0608, Refuel 25 (C2R25) Inservice Inspection (ISI) Report

Refuel 25 (C2R25) Inservice Inspection (ISI) Report

ML23025A365
Person / Time
Site:	Catawba
Issue date:	01/25/2023
From:	Hare M Duke Energy
To:	Office of Nuclear Reactor Regulation, Document Control Desk
References
RA-22-0608
Download: ML23025A365 (1)

Text

Mandy Hare Nuclear Support Services Manager

~ ~ DUKE

• Catawba Nuclear Station

~ ENERGY Duke Energy CN03CH I 4800 Concord Rd York, SC 29745 803. 701.2218 Mandy.Hare@duke-energy.com Serial: RA-22-0608 January 25, 2023 United States Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001 Catawba Nuclear Station, Unit No. 2 Docket No. 50-414 I Renewed License No. NPF-52

Subject:

Catawba Unit 2, Refuel 25 (C2R25) lnservice Inspection (ISi) Report Ladies and Gentlemen:

In accordance with Section XI of the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code, Duke Energy is providing its lnservice Inspection (ISi) Summary Report for Catawba Nuclear Station, Unit No. 2, Refuel 25 (C2R25).

The enclosure contains the C2R25 Owner's Activity Summary Report.

This submittal contains no regulatory commitments. Should you have any questions concerning this letter, or require additional information, please contact Ryan Treadway, Director - Nuclear Fleet Licensing, at 980-373-5873.

Sincerely,

~~ce.fhc Nuclear Support Services Manager, Catawba Nuclear Station

Enclosure:

Owner's Activity Summary Report For Refueling Outage 25 NOE

U.S. Nuclear Regulatory Commission Page 2 Serial: RA-22-0608 cc: (w/ enclosure)

S. Williams, NRC Project Manager, NRR L. Dudes, NRC Regional Administrator, Region II D. Rivard, NRC Senior Resident Inspector, Catawba Nuclear Station

Enclosure Serial: RA-22-0608 Enclosure Owners Activity Summary Report for Refueling Outage 25

DUKE ENERGY INSERVICE INSPECTION

SUMMARY

REPORT UNIT 2 CATAWBA FALL 2022 REFUELING OUTAGE C2R25 (Outage 5)

Location: 4800 Concord Road, York, SC, 29745 NRC Docket No. 50-414 Commercial Service Date: August 19, 1986 Owner: Duke Energy 526 South Church St.

Charlotte, NC 28201-1006 Revision 0 Digitally signed by ACKell1 (365600)

Date: 2023.01.18 08:38:28 -05'00' Originated By:

Austin C. Keller er Checked By:

Stephen L. L Mays ys Digitally signed by MAP9681 MAP9681 (102140) (102140)

Approved By: Date: 2023.01.18 14:28:43 -05'00' Mark A. Pyne

CASE N-532-5 FORM OAR-1 OWNER'S ACTIVITY REPORT Report Number Owners Activity Report for Refueling Outage C2R25 Plant Catawba Nuclear Station, 4800 Concord Road, York, SC 29745 Unit No. 2 Commercial service date August 19, 1986 Refueling outage no. C2R25 (if applicable)

Current inspection interval Fourth Inspection Interval (ISI), Third Inspection Interval (Containment ISI)

(1st, 2nd, 3rd, 4th, other)

Current inspection period Second Inspection Period (ISI), Third Inspection Period (Containment ISI)

(1st, 2nd, 3rd)

Edition and Addenda of Section XI applicable to the ASME Section XI 2007 Edition through 2008 inspection plans Addenda & 2017 Edition Date and revision of inspection plans See Attachment Edition and Addenda of Section XI applicable to repair/replacement activities, if different than the inspection plans Same as above The following Code Cases are permitted by the ISI Plan and Addenda:

4th Interval: N-513-3, N-532-5, N-586-1, N-600, N-613-1, N-639, N-643-2, N-648-2, N-651, N-705, N-706-1, N-712, N-716-1, N-722-1, N-729-6, N-731, N-735, N-747, N-751, N-765, N-770-5, N-771, N-775, N-776, Code Cases used for inspection N-786-1, N-798, N-800, N-805, N-823, N-825, N-843, N-845, N-854, &

and evaluation: N-885 (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 C2R25 conform to the requirements of Section XI.

(refueling outage number)

Digitally signed by ACKell1 (365600)

Date: 2023.01.18 08:38:59 Signed -05'00' Austin Keller, ISI Program Owner Date 01/18/2023 CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and the State or Province of South Carolina and employed by Bureau Veritas Inspection and Insurance Company of Lynn, MA have inspected the items described in this Owners Activity Report, and state that, 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 connected with this inspection.

Digitally signed by DMMalle (457903)

Date: 2023.01.19 10:27:36 -05'00' Commissions 15196 AI, IS, I, N, R; SC 363 Inspectors Signature National Board, State, Province, and Endorsements Dustin Mallet Date 01/19/2023 Page 1 of 5

CASE N-532-5 Attachment Catawba Unit 2 Refuel Outage 25, Inservice Inspection Report The Catawba Nuclear Station Unit 2 Fourth Ten Year Inservice Inspection (ISI) Plan complies with 10CFR50.55a(g), (79 FR 73462, Dec. 11, 2014), which implements, by reference, the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code,Section XI, 2007 Edition with 2008 Addenda.

x Per RIS 2004-12, Letter RA-20-0262, NRC Accession Number ML20260H325 and approval NRC Accession Number ML20300A206, the NRC staff concluded that the use of subparagraph IWA-4540(b) of the 2017 Edition of the ASME B&PV Code,Section XI, is acceptable for Catawba Unit 2.

x Per RIS 2004-16, Letter RA-20-0263, NRC Accession Number ML20260H326 and approval NRC Accession Number ML21113A013, the NRC staff concluded that the use of subparagraph IWA-4340 of the 2017 Edition of the ASME B&PV Code,Section XI, is acceptable for Catawba Unit 2.

x Per RIS 2004-12, Letter RA-20-0191, NRC Accession Number ML20265A028 and approval NRC Accession Number ML21029A335, the NRC staff concluded that the use of paragraphs IWA-5120, IWA-5213, IWA-5241, IWA-5242, and IWA-5250 of the 2017 Edition of the ASME B&PV Code,Section XI, is acceptable for Catawba Unit 2.

This summary report is being submitted pursuant to the reporting requirements of ASME Section XI as amended by ASME Code Case N-532-5, Repair/Replacement Activity Documentation Requirements and Inservice Inspection Summary Report Preparation and Submission Section XI, Division 1.

Contained within this summary report are the form OAR-1 (Owners Activity Report) and Tables 1 and 2 of Code Case N-532-5 for Catawba Nuclear Station during cycle 25 and Refueling Outage 25 (C2R25).

C2R25 is the last outage of the second ISI period in the fourth inspection interval. C2R25 is the first outage of the third Containment period in the third inspection interval. This report reviewed all Repair/Replacement activities from May 4, 2021 through October 26, 2022, cycle 25.

Date and Revision of Inservice Inspection Plans:

I. Fourth Interval Inservice Inspection Plans

1. The following documents comprise the Catawba Nuclear Station 4th Interval Inservice Inspection Plan for Unit 2 (Class 1, 2, and 3 Components):

a. Catawba Nuclear Station Units 1 and 2 Fourth Interval Inservice Inspection Plan, Document #CISI-1462.10-0040-ISI PLAN, Rev. 8, approved 03/08/2022.

b. Fourth Interval Inservice Inspection Outage Schedule Catawba Nuclear Station Unit 2, Document #CISI-1462.10-0040-UNIT 2, Rev. 5, approved 03/08/2022.

2. The following documents comprise the Catawba Nuclear Station 4th Interval Inservice Inspection Pressure Test Plan for Unit 2:

a. Catawba Nuclear Station Units 1 and 2 Fourth Inspection Interval Inservice Inspection Plan Pressure Test Plan, Document #CISI-1462.20.0040 - PTPlan, Rev. 4, approved 11/29/2021.

Page 2 of 5

CASE N-532-5 II. Fourth Interval Augmented Inservice Inspection Plan

1. The following document comprises the Catawba Nuclear Station 4th Interval Augmented Inservice Inspection Plan and Schedule for Unit 2:

a. Augmented Inservice Inspection Plan and Schedule, Document #CISI-1462.10-0030-AUGISI-U1&U2, Rev. 8, approved 12/16/2021.

III. Third Interval Containment Inservice Inspection Plan

1. The following document comprises the Catawba Nuclear Station 3rd Interval Containment Inservice Inspection Plan for Unit 1 (Class MC):

a. Catawba Nuclear Station Units 1 and 2 - Third Interval Containment Inservice Inspection Plan, Document #CN-ISIC3-1042-0001, Rev. 11, approved 07/13/2021.

Page 3 of 5

CASE N-532-5 TABLE 1 ITEMS WITH FLAWS OR RELEVANT CONDITIONS THAT REQUIRED EVALUATION FOR CONTINUED SERVICE Examination Category and Item Description Evaluation Description Item Number Dry, white inactive boric acid leakage was discovered on the 2A and 2D Reactor Boric acid residue found during ISI Coolant Pump Seal Area identified in B-P I B15.10 Pressure NCR #02446609. These relevant Test Zone, 2NC-001L-A conditions were evaluated by Engineering and found to be acceptable per IWA-5251 and IWB-3142.

The NDE examination of these closures showed no signs of degradation and were evaluated as acceptable by Engineering per IWE-3122.3. See NCR #02442184 for Boron was observed on leak chase E-A / E1.30 engineering evaluation. Work Request #

channel closures #26, #27, and #136.

020233360 was generated to clean and inspect the leak chase channel closures per TE-MN-PWR-0006. No degradation was noted after cleaning.

Evaluated by Engineering and accepted The horizontal sway struts mini clamps per IWF-3122.3. See NCR #02442050 for support 2-R-NC-1021 exhibited two and calculation CNC-1206.02-70-0073, loose nuts on the clamping device and F-A / F1.11 Rev. 17 for analysis of the as-found the vertical sway strut c-Clip locking condition. WR 20233293 was written to device was missing from the strut to mini restore the support to its original design clamp attachment locking pin.

configuration.

The legacy denting on the spring can housings was cosmetic and does not Multiple dents were observed on the affect the function of the spring or spring can housings for the Upper Air F-A / F1.40 support. The relevant condition was Lock barrel constant support 2-SUPT-evaluated by Engineering and accepted 0001.

per IWF-3122.3. See NCR #02442006 for engineering evaluation.

Page 4 of 5

CASE N-532-5 TABLE 2 ABSTRACT OF REPAIR/REPLACEMENT ACTIVITIES REQUIRED FOR CONTINUED SERVICE Repair /

Code Item Description Description of Work Date Completed Replacement Class Plan Number 2NC RX Head PT (RVCH) Nozzle #74 2RPV-Closure-Head- Embedded Flaw 1 Nozzle-74 Repair 10/14/2022 20479853-01 Page 5 of 5