RA-22-0066, Refuel 30 (O2R30) Inservice Inspection (ISI) Report, Fifth 10-Year ISI Interval

Refuel 30 (O2R30) Inservice Inspection (ISI) Report, Fifth 10-Year ISI Interval

ML22066A012
Person / Time
Site:	Oconee
Issue date:	03/07/2022
From:	Gibby S Duke Energy Carolinas
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
RA-22-0066
Download: ML22066A012 (9)

Text

Shawn K. Gibby

( ., DUKE Vice President ENERGY Nuclear Engineering 526 South Church Street, EC-07H Charlotte, NC 28202 704-519-5138 Shawn.Gibby@duke-energy.com RA-22-0066 March 7, 2022 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001 Oconee Nuclear Station, Unit 2 Docket No. 50-270 Renewed License No. DPR-47

Subject:

Oconee Unit 2, Refuel 30 (O2R30) Inservice Inspection (ISI) Report, Fifth 10-Year ISI Interval Pursuant to the 2007 Edition through the 2008 Addenda of the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code,Section XI, IWA-6000, Duke Energy Carolinas, LLC is providing its Inservice Inspection (ISI) summary pertaining to the 30th refueling outage (O2R30) for Oconee Nuclear Station (ONS) Unit 2.

The Enclosure to this letter contains the O2R30 ISI summary report.

This submittal contains no regulatory commitments. Please refer any questions regarding this submittal to Lee Grzeck, Manager - Nuclear Fleet Licensing (Acting), at 980-373-1530.

Sincerely, Shawn K. Gibby Vice President - Nuclear Engineering JLV

Enclosure:

Inservice Inspection Summary Report Unit 2 Oconee Fall 2021 Refueling Outage O2R30 (Outage 4)

U.S. Nuclear Regulatory Commission Page 2 RA-22-0066 cc: (with Enclosure)

Ms. Laura Dudes Administrator, Region II U.S. Nuclear Regulatory Commission Marquis One Tower 245 Peachtree Center Avenue NE, Suite 1200 Atlanta, GA 30303-1257 Mr. Shawn Williams NRC Project Manager Oconee Nuclear Station Mr. Jared Nadel NRC Senior Resident Inspector Oconee Nuclear Station

Enclosure to RA-22-0066 Enclosure Inservice Inspection Summary Report Unit 2 Oconee Fall 2021 Refueling Outage O2R30 (Outage 4)

DUKE ENERGY INSERVICE INSPECTION

SUMMARY

REPORT UNIT 2 OCONEE FALL 2021 REFUELING OUTAGE O2R30 (Outage 4)

Location: 7800 Rochester Hwy, Seneca, SC 29672 NRC Docket No. 50-270 Commercial Service Date: September 9, 1974 Owner: Duke Energy 526 South Church St.

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

Date: 2022.02.17 16:14:27 -05'00' Originated By: Date Austin C. Keller Digitally signed by KASull1 (524967)

Checked By: Date: 2022.02.17 16:26:25 -05'00' Date Kaitlyn Sullivan DBM0638 (125595) dc=com, dc=duke-energy, dc=ent, dc=nam, ou=Accounts, ou=Personal, ou=PNTransitional, cn=DBM0638 (125595), email=Daniel.Mayes@duke-energy.com Reviewed By: 2022.02.17 16:48:37 -05'00' Date Daniel Mays Digitally signed by MAP9681 MAP9681 (102140)

Date: 2022.02.17 17:35:30 Approved By: (102140) -05'00' Date Mark A. Pyne

CASE N-532-5 FORM OAR-1 OWNER'S ACTIVITY REPORT Report Number _ _ _ _ _ _ _ _ O_w_n_e_r_'s_A_ct_iv_it~y_R_e~po_rt_fo_r_R_e_fu_e_l_in~g~O_u_ta~g~e_O_2_R_3_0_ _ _ _ _ _ __

Plant Oconee Nuclear Station, 7800 Rochester Highway, Seneca, SC 29672 Refueling outage no. _O_2_R_3_0_ __

Unit No. 2 (if applicable)

Commercial service date - -09/09/1974 Current inspection interval Fifth Inspection Interval (ISi), Third Inspection Interval (Containment ISi)

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

Current inspection period Third Inspection Period (ISi and Containment ISi)

(1st, 2nd, 3rd)

Edition and Addenda of Section XI applicable to the 2007 Edition through 2008 Addenda inspection plans 2017 Edition (See Attachment A)

Date and revision of inspection plans See Attachment A 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 Augmented ISi, ISi, and Pressure Test Plans, 5th Interval: N-513-3, N-513-4, N-532-5, N-586-1, N-600, N-613-1, N-613-2, N-639, N-643-2, N-648-1, N-648-2, N-651, N-663, N-705, N-706-1, N-711-1, N-712, N-716-1, N-722-1, N-729-6, N-731, N-735, Code Cases used for inspection N-751, N-765, N-770-5, N-771, N-775, N-776, N-786-1, N-798, N-800, N-and evaluation: 805, N-823, N-823-1, N-825, N-831, N-843, N-845, N-853, & N-854 (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 O2R30 conform to the requirements of Section XI.

(refueling outage number)

~:!~~~

Digitally signed by ACKelll 1

Audzit.-C ~d&,,, 22021716;14'51 Signed -0,*00* Austin C. Keller, ISi Program Owner Date 02/17/2022 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 OneCIS Insurance Company Lynn, MA have inspected the items described in this Owner's 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 insl)ection.

__/_1.'-',:J:2==;/7=--_* __Q-=-_Q=-=:,-._________ Commissions ~N=B~13=3=9=9~~B=,~1.~N~,~N~S=,~N~S~l.~R~

Inspector's Signature National Board, State, Province, and Endorsements Paul Arnett Date 2/24/2022 Page 1 of 5

CASE N-532-5 Attachment A Oconee Unit 2 Refueling Outage 30, Inservice Inspection Report The Oconee Nuclear Station Unit 2 Fifth Ten Year Inservice Inspection (ISI) Plan complies with 10CFR50.55a(g), 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 Oconee 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 Oconee 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 Oconee Unit 2.

This summary report is being submitted pursuant to the reporting requirements of ASME Section XI, IWA-6000 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 Oconee Nuclear Station during cycle 30 and Refueling Outage 30 (O2R30).

O2R30 is the first outage of the third ISI period in the fifth inspection interval. O2R30 is the first outage of the third Containment period in the third inspection interval. This report includes all Repair/Replacement activities from December 13, 2019 through December 7, 2021 cycle 30.

Date and Revision of Inservice Inspection Plans:

I. Fifth Interval Inservice Inspection Plans

1. The following documents comprise the Oconee Nuclear Station 5th Interval Inservice Inspection Plan for ONS Unit 2 (Class 1, 2, and 3 Components):

a. ISI Plan - Fifth Interval Inservice Inspection Plan, Oconee Nuclear Station Units 1, 2, & 3 and Keowee Hydro Station Units 1 & 2, Document #OISI-0169.10-0050-ISI PLAN, Rev.

1, dated 02/22/2021.

b. ISI Schedule - Fifth Ten-Year Interval Inservice Inspection Schedule Oconee Nuclear Station Unit 2, Document #OISI-0169.10-0050-Unit 2, Rev. 1, dated 02/26/2021.

2. The following document comprises the Oconee Nuclear Station 5th Interval Inservice Inspection Pressure Test Plan for ONS Unit 2:

a. Oconee Nuclear Station - Fifth Inspection Interval Inservice Inspection PT (Pressure Test) Plan General Requirements Units 1, 2, and 3, Document #OISI-0169.20-0050-PTPLAN, Rev. 7, dated 01/18/2022.

Page 2 of 5

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

1. The following document comprises the Oconee Nuclear Station 5th Interval Augmented Inservice Inspection Plan and Schedule for Unit 2:

a. Oconee Nuclear Station - Augmented Inservice Inspection NDE Plan - General Requirements and Units Detail Listing, Document #OISI-0169.10-0050 - AUG-ISI, Rev. 7, dated 01/19/2021.

III. Third Interval Containment Inservice Inspection Plan

1. The following document comprises the Oconee Nuclear Station 3rd Interval Containment Inservice Inspection Plan for Unit 2 (Class MC):

a. Third Interval Containment Inservice Inspection Plan Oconee Nuclear Station Units 1, 2,

& 3, Document #O-ISIC3-62-0001, Rev. 8, dated 01/15/2021.

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 Areas identified in NCR #02405408 Boric acid residue was found during ISI C-H / C7.10 were evaluated by Engineering and Pressure Test Zone, O2HPI-8 found to be acceptable.

Boric acid residue was found during ISI Areas identified in NCR #02375855 C-H / C7.10 Pressure Test Zones, I2HPI-1, I2HPI-4, and were evaluated by Engineering and I2HPI-7. found to be acceptable.

Areas identified in NCR #02376031 Boric acid residue was found during ISI C-H / C7.10 were evaluated by Engineering and Pressure Test Zone, I2HPI-6.

found to be acceptable.

Areas identified in NCR #02384062 Boric acid residue was found during ISI C-H / C7.10 were evaluated by Engineering and Pressure Test Zone, I2LPI-1 found to be acceptable.

Areas identified in NCR #02375817 Boric acid residue was found during ISI C-H / C7.10 were evaluated by Engineering and Pressure Test Zone, I2HPI-5.

found to be acceptable.

Areas identified in NCR #02374911 Boric acid residue was found during ISI C-H / C7.10 were evaluated by Engineering and Pressure Test Zone, I2RCS-2.

found to be acceptable.

Indications identified in NCR #02394563 were evaluated by Engineering and found to be acceptable for continued ISI Summary No. O2-04350 (Component ID service. The as-found configuration of 2-53B-2-0-436E-H9). VT-3 examination of support 2-53B-2-0-436E-H9 having only F-A / F1.20 the support found configuration management 5 tack welds was acceptable. The discrepancies with the drawing and the drawing was revised by engineering to number of tack welds.

note stating it is acceptable to have 2 tack welds on one side and 3 on the other.

Page 4 of 5

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

Code Date Item Description Description of Work Replacement Class Completed Plan Number Unit 2, 2-RC-HX-000A:

1 2-RC-HX-000A 11/24/2021 20450887-17 ROTSG Plug Tubes as needed Unit 2, 2-RC-HX-000B:

1 2-RC-HX-000B 11/24/2021 20450888-17 ROTSG Plug Tubes as needed Page 5 of 5