NLS2023010, Inservice Inspection OAR-1 Owner'S Activity Report for Cooper Nuclear Station

Inservice Inspection OAR-1 Owner'S Activity Report for Cooper Nuclear Station

ML23041A380
Person / Time
Site:	Cooper
Issue date:	02/09/2023
From:	Dewhirst L Nebraska Public Power District (NPPD)
To:	Office of Nuclear Reactor Regulation, Document Control Desk
References
NLS2023010
Download: ML23041A380 (1)

Text

Nebraska Public Power District Always there when you need us NLS2023010 February 9, 2023 U.S. Nuclear Regulatory Commission Attention: Document Control Desk Washington, D.C. 20555-0001

Subject:

lnservice Inspection OAR-1 Owner's Activity Report Cooper Nuclear Station, Docket No. 50-298, DPR-46

Dear Sir or Madam:

The purpose of this letter is to provide to the Nuclear Regulatory Commission the lnservice Inspection OAR-1 Owner's Activity Report for the Fall 2022 Refueling Outage at Cooper Nuclear Station (CNS). This report is submitted in accordance with the requirements of the American Society of Mechanical Engineers Boiler and Pressure Vessel Code,Section XI, Code Case N-532-5. The enclosure contains the completed OAR-1 Owner's Activity Report form, a table identifying the description of items with flaws or relevant conditions that required evaluation for continued service, and a table providing an abstract of repair/replacement activities required for continued service.

This letter does not contain commitments. Should you have any questions regarding this matter_ lease contact me at (402) 825-5416.

Regulatory Affairs and Compliance Manager

/bk

Enclosure:

OAR-1 Owner's Activity Report cc: Regional Administrator w/enclosure Cooper Project Manager w/enclosure USNRC - Region IV USNRC - NRR Plant Licensing Branch IV Senior Resident Inspector w/enclosure NPG Distribution w/enclosure USNRC- CNS CNS Records w/enclosure COOPER NUCLEAR STATION P,O_ Box 98 / Brownville, NE 68321-0098 Telephone: (402) 825-3811 / Fax: (402) 825-5211 wwwnppd.com

NLS2023010 Enclosure Page 1 of 3 Enclosure OAR-1 Owner's Activity Report

NLS2023010 Enclosure Page 2 of 3 FORM OAR-1 OWNER'S ACTIVITY REPORT Report Number _R_E_3_2_-1_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

Plant Cooper Nuclear Station, P.O. Box 98, 72676 648A Ave, Brownville, NE 68321 Unit No. Commercial Service Date 7/1/1974 Refueling Outage No. _R_E_3_2_ _ __

(if applicable)

Current Inspection Interval 5th Interval (Class 1. 2, 3); 3rd Interval (Class MC)

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

Current Inspection Period 2nd Period (Class 1, 2, 3, MC)

(1st, 2nd, 3rd)

Edition and Addenda of Section XI applicable to the inspection plans 2007 Edition, 2008 Addenda Date and Revision of inspection plans 9/19/22, Revision 4 (Class 1, 2, 3 combined)

Edition and Addenda of Section XI applicable to repair/replacement activities, if different than the inspection plans Same Code Cases used for inspection and evaluation:

N-532-5 (If applicable, including cases modified by Case N-532 and later revisions)

CERTIFICATE OF CONFORMANC E 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, Sec

• n XI; net (c) th: ~/replacem enl activities and evaluations supporting the completion of RE32 conform to the !s of S e1 ~ ;

r-£neen~*

{Refuellng Outage Number}

Slgned Components Manager Date 2/7/2023 Owner or Owner's Deslgnee, TiUe CERTIFICATE OF INSERVICE INSPECTION I, the undersigned, holding a valid commission issued by the National Board of Boiler and Pressure Vessel Inspectors and employed by The Hartford Steam Boiler lnspecUon and Insurance Companv of Hartford, Connecticut 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 loss of any kind arising from or connected with this inspection.

1-....;..;.;__..;...;.. +-..;.__,9f-J.;.c;.. .........::...;..._...i,. c;.;z.~.:::;...~_.,~ ---- ission NB# 14725, Endorsements C, I, N, R (National BoardNumber and Endorsement)

Date

{N--532-5)

NLS2023010 Enclosure Page 3 of 3 COOPER NUCLEAR STATION TABLE 1 ITEMS WITH FLAWS OR RELEVANT CONDITIONS THAT REQUIRED EVALUATION FOR CONTINUED SERVICE Examination Category and Item Number Item Description Evaluation Description None None None COOPER NUCLEAR STATION TABLE 2 ABSTRACT OF REPAIR/REPLACEMENT ACTIVITIES REQUIRED FOR CONTINUED SERVICE Code Item Description Description of Work Date Repair/

Class Completed Replacement Plan Number 3 Pipe leak identified in pipe section downstream of CNS- Replaced section of leaking pipe with 1-SW-V-135 was replaced. This condition was identified through wall defect. Replaced section of in condition report (CR) CR-CNS-2021-00211. Service Water pipe per corrective 1/22/2021 21-001 R1 maintenance (CM) Work Order (WO) 5384084.

3 Multiple areas of localized wall thinning identified in pipe Pipe was below Min-Wall. Repaired sections SW-2-2852-128, SW-2-2852-129 and SW section of Service Water pipe in RE-32 2852-130. Repaired in refueling outage 32 (RE-32). per CM WO 5407844.

Condition identified in the following CRs:

CR-CNS-2022-04564 CR-CNS-2022-04687 10/20/2022 22-007R1 CR-CNS-2022-04 702 CR-CNS-2022-04 703 CR-CNS-2022-04 74 7 CR-CNS-2022-04 748 3 Localized wall thinning identified in pipe section SW-E Pipe was below Min-Wall. Repaired 2851-2 was repaired in RE-32. Condition identified in section of Service Water pipe in RE-32 11/03/2022 22-025 CR-CNS-2022-054 70. per CM WO 5467376.