ML23075A163

Inservice Inspection Program Fourth Interval, Third Period, Refueling Outage 25 Owners Activity Report

ML23075A163
Person / Time
Site:	Wolf Creek
Issue date:	03/16/2023
From:	Hamman D Wolf Creek
To:	Office of Nuclear Reactor Regulation, Document Control Desk
References
RA 23-0012
Download: ML23075A163 (1)

Text

Wo If Cree k. . .

Nuclear Operating Corporation 1'\,~'ffl>

Dustin Hamman Director Nuclear and Regulatory Affairs March 16, 2023 RA 23-0012 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001

Subject:

Docket No. 50-482: Inservice Inspection Program Fourth Interval, Third Period, Refueling Outage 25 Owners Activity Report Commissioners and Staff:

Enclosed is the Wolf Creek Nuclear Operating Corporation (WCNOC) Owners Activity Report (Form OAR-1, Report Number WCRE-30 Rev. 6, I4-P3-RF25) for inservice inspections performed after Wolf Creek Generating Stations (WCGS) Refueling Outage 24 (RF24) that concluded on May 15, 2021, and up to, and including, WCGS Refueling Outage 25 (RF25) that concluded on November 20, 2022. RF25 was the first refueling outage of the third period of the fourth interval of the WCNOC Inservice Inspection Program. The enclosed report is submitted pursuant to the requirements of paragraph IWA-6240 of the 2007 Edition through 2008 Addenda of Section XI of the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code and ASME Code Case N-532-5, N-706-1, N-892, and N-858.

This letter contains no commitments. If you have any questions concerning this matter, please contact me at (620) 364-4204.

Sincerely, Dustin T. Hamman DTH/jkt

Enclosure:

WCNOC ISI Form OAR-1, Report Number WCRE-30, I4-P3-RF25 cc: S. S. Lee (NRC), w/e R. J. Lewis (NRC), w/e G. E. Werner (NRC), w/e Senior Resident Inspector (NRC), w/e P.O. Box 411 l Burlington, KS 66839 l 620-364-8831

Enclosure to RA 23-0012 ENCLOSURE Wolf Creek Nuclear Operating Corporation Inservice Inspection Program Owners Activity Report (Form OAR-1, Report Number WCRE-30, I4-P3-RF25)

(3 pages)

FORM OAR-1 OWNER 'S ACTIVITY REPORT Report Number WCRE-30 . l4/P3-RF25 Unit No. - ~ - - - - - Commercial service date ~ 9~*=3--1~9=8=5~ _ _ _Refueling outage no._~ R~F-=2=5_ _ __ __

(if applicable)

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

Current inspection period 3r

{1st, 2nd, 3rd)

Edition and Addenda of Section XI applicable to repair/replacement activities, if different than the inspection plans _ __

sa e Code Cases used for inspection and evaluation: -'-' N_, -5,,,3,,,2'--'-5""----'N.,_--':7:"-0..,-_1c'-'-:'

, N':--'-"""'"'-':...,."""---=--:-:---=-- ,..,...---------- - - -

uf applicable, including cases modified by Case N*532 and later revisions)

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 RF-25 conform to the requirements of Section XI.

(refuel ing outage number)

Signed ~1/~ Owner or Owner's Designee, Title ISi Engineer Date - - =3/,_,1'""'3"-"/2, __,0,_, 2=3'---_ _ __ _ _ _ _

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 ___T.ubwea....uH.,.a.urtf..,o,,..r_,.d'-'S,,.,t.,e.._amu.wB""o""i"'le.,_r.....I,..ns.,p.,e..,c"'ti,,_ouo..1aaUJn,.d...1lous..,u.,r_..auoc..,e.....,.C,,,_o..

m,..p,.awo"'y_ _ of Hartford. CT 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 inspection.

~ Inspector's Signatt

---===== Commissions _ _ l~J'. ~l/__.p ,-.;.__£.

. _.~r,/. _._J?_._c,.. ___ __~

National Board Number and Endorsement Date--'3~ 0__.7'---'-.7,, _/ _~_ ~_~_

OAR-1 14-PJ-RF-25 Page 1 of 3

TABLE 1 ITEMS WITH FLAWS OR RELEVANT CONDITIONS THAT REQUIRED EVALUATION FOR CONTINUED SERVICE Examination Item Description Evaluation Description Category and Item Number Pressure Retaining Components One nut of the body to bonnet C-H connection did not achieve full C 7.10 5/8" Body to Bonnet Bolting on thread engagement. This valve BG8381 condition was evaluated and found acceptable.

OAR-1 14-P3-RF-25 Page 2 of3

TABLE2 ABSTRACT OF REPAIR/REPLACEMENT ACTIVITIES REQUIRED FOR CONTINUED SERVICE Code Item Description of Work Date Repair/Replacement Class Completed Plan Number Description Note 1 PEJ01 A - Startup 12/27/2022 2022-035 2 Strainer Spacer The startup strainer connection had two studs Ring and four nuts replaced due to galling.

BG8381 -

Charging pump discharge to The disc and arm assembly on the check 2 01/05/2023 2022-034 Regen HX inside valve were replaced.

CTMT check valve The bolting on the inlet and outlet flanges of 2 EBG01-Letdown the heat exchanger was replaced due to 01/05/2023 2022-029 heat exchanger degradation.

EM03H004/232- The bolting on the pipe support was replaced NF-1 Large Pipe 12/27/2022 2022-028 due to degradation.

Support AEV0420-14" 3 Enertech Nozzle The flange bolting was replaced due to galling . 6/2/2021 2022-026 Check Valve EFV0005-36" This valve was replaced with a new stainless 3 2/07/2023 2022-027 Butterfly valve steel valve due to seat leakage.

BB04C011241- The bolting of the clamps of the support was 1 Large pipe 1/5/2023 2022-038 replaced .

hanger EM HV8803A-4" The valve disc was replaced due to 1 2/14/2023 2022-033 gate valve degradation.

Note 1: The date completed is the date the Form NIS-2A was certified.

OAR-1 14-P3-RF-25 Page3of3