NLS2021009, Inservice Inspection OAR-1 Owner'S Activity Report

Inservice Inspection OAR-1 Owner'S Activity Report

ML21043A252
Person / Time
Site:	Cooper
Issue date:	01/21/2021
From:	Dewhirst L Nebraska Public Power District (NPPD)
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
NLS2021009
Download: ML21043A252 (5)

Text

H Nebraska Public Power Disbict Alwa,,therewhm,ownudw.J NLS2021009 January 21, 2021 U.S. Nuclear Regulatory Commission Attention: Document Control Desk Washington, D.C. 20555-0001

Subject:

Inservice 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 Inservice Inspection OAR-1 Owner's Activity Report for the Fall 2020 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, please 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 ;4-047 COOPER NUCLEAR STATION PO Box 98 / Brownville, NE 68321-0098 Telephone: (402) 825-3811 / Fax: (402) 825-5211 wwwnppd com

NLS2021009 Enclosure Page 1 of 4 Enclosure OAR-1 Owner's Activity Report

NLS2021009 Enclosure Paga 2 of 4 FORM OAR-1 OWNER'S ACTIVITY REPORT Report Number .;.R.;;;E3~1-..,;.1_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ __

Plant Cooper Nudear Station, P.O. Box 98, n676 648A Ave, Brownvl8e, NE 68321 Unit No. 1 Commercial Service Date 7n/1974 RefueUng Outage No. RE31 (If appllcabl8)

Current lnspecllon Interval 5th Interval (Class 1, 2, 3): 3rd Interval (Class MC)

(1 II, 2nd, 3rd, 41h, olher}

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

(1II, 2nd, 3rd)

Edftlon and Addenda of Section XI appllcabla to the inspection plans 2007 Edition, 2008 Addenda Date and Revision of lnspecUon plans 9/26/20, Revision 3 (Class 1, 2, 3 combined)

Edition and Acldencla 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 (ff applicable, Including cases modified by Casa N-532 and later revisions)

CERTIRCATE OF CONPORMANCE I cEl1ify lhat (a) the statementa made In this report are cooect;-(b) the examinations and tests meet the lnapectlon Plan as required by lhe ASME Coda, Secllon XI; and (c) the repalrtreplacement activities and evaluations supporting th8 completion of RE31 conform to the requlremenls of Secbon XI. (Relueling Outage Number)

Signed Jason Stairs - 1/13/2021 Owneror0wnel'8Dngnee,T1lla I, the undersigned, holdlng a valid commission Issued by the National Board of Bo!er and Pressure Vessel lnspectoB and employed by The Hartford Steam Bolter Inspection and 1nsc.rance CompanY of Hartford, Connecticut have Inspected the Items descrtbed 11 this Owner's Activity Report. and mle that, to the best of my knowledge and belief, the OWner has performed al activities represented by thla repoo In accordance With the requirements of Section XL By slgmng this certificate neither the Inspector nor his employer makes any warranty, expressed or Implied. concerning the repair/replacement actMttea and evaluation described In this report. Furthermore, neither the Inspector nor Ills employer shal be liable In any manner for any personal Injury or property damage or loss of any kind Blillng from or COi uiected with this ln&pedlon.

Scott 14725, Endonlements C, I, N, R (N:allonel ~ end Endorseaient)

(N-532-6)

NLS2021009 Enclosure Page 3 of 4 COOPER NUCLEAR STATION TABLE 1 ITEMS WITH FLAWS OR RELEVANT CONDITIONS THAT REQUIRED EVALUATION FOR CONTINUED SERVICE Examination Category Item Description Evaluatlon Description and Item Number 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 Localized wall thinning identified in pipe Pipe below Min-Wall. Replaced section of section SW-Z4-2852-23 was replaced in RE-31. Service Water pipe in RE-31 per CM Work 10/08/2020 20-031 Condition identified in CR-CNS-2020-04194. Order 5365785.

3 Localized wall thinning identified in pipe Pipe was below Min-Wall. Repaired section section SW-E-9-2851-2 was repaired in RE-31. of Service Water pipe in RE-31 per CM Work 10/08/2020 20-032R1 Condition identified in CR-CNS-2020-04417. Order 5365951.

3 Localized wall thinning identified in pipe Pipe was below Min-Wall. Repaired section section SW-E-4-2851-3 was repaired in RE-31. of Service Water pipe in RE-31 per CM Work 10/23/2020 20-034 Condition identified in CR-CNS-2020-04944. Order 5367828.

3 Localized wall thinning identified in pipe Pipe was below Min-Wall. Repaired section section SW-Zl-2851-4 was repaired in RE-31. of Service Water pipe in RE-31 per CM Work 10/23/2020 20-036 Condition identified CR-CNS-2020-04989. Order 5367737.

NLS2021009 Enclosure Page 4 of 4 COOPER NUCLEAR STATION TABLE 2 ABSTRACT OF REPAIR/REPLACEMENT ACTIVITIES REQUIRED FOR CONTINUED SERVICE Code Item Description Description of Work Date Repair/

aass Completed Replacement Plan Number 3 Localized wall thinning identified in pipe Pipe was below Min-Wall. Repaired section section SW-E-6-2851-4 was repaired in RE-31. of Service Water pipe in RE-31 per CM Work 10/23/2020 20-038 Condition identified in CR-CNS-2020-05000. Order 5367900.

3 Localized wall thinning identified in pipe Pipe was below Min-Wall. Repaired section section SW-E-6-2852-3 was repaired in RE-31. of Service Water pipe in RE-31 per CM Work 10/22/2020 20-039 Condition identified in CR-CNS-2020-05024. Order 5367852.