ML21217A335

Containment Inservice Inspection Program Third Interval, First Period, Refueling Outage 24 Owner'S Activity Report

ML21217A335
Person / Time
Site:	Wolf Creek
Issue date:	08/05/2021
From:	Benham R Wolf Creek
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
RA 21-0062 WCRE-36, I3-P1-RF24
Download: ML21217A335 (6)

Text

Ron Benham Director Nuclear and Regulatory Affairs August 5, 2021 RA 21-0062 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001

Subject:

Docket No. 50-482: Containment Inservice Inspection Program Third Interval, First Period, Refueling Outage 24 Owners Activity Report Commissioners and Staff:

Enclosed is the Wolf Creek Nuclear Operating Corporation (WCNOC) Owners Activity Report (Form OAR-1, Report Number WCRE-36, I3-P1-RF24) for containment inservice inspections performed after Wolf Creek Generating Stations (WCGS) twenty-third refueling outage (RF23) that concluded on November 6, 2019, and up to, and including, WCGS twenty-fourth refueling outage (RF24) that concluded on May 15, 2021. RF24 was the second refueling outage of the first period of the third interval of the WCNOC Containment Inservice Inspection Program. The enclosed report is submitted pursuant to the requirements of paragraph IWA-6240 of the 2013 Edition of Section XI of the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code and ASME Code Case N-532-5.

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

Sincerely, Ron Benham RDB/rlt

Enclosure:

WCNOC Containment ISI Form OAR-1, Report Number WCRE-36, I3-P1-RF24 cc: S. S. Lee (NRC), w/e S. A. Morris (NRC), w/e N. OKeefe (NRC), w/e Senior Resident Inspector (NRC), w/e P.O. Box 411 l Burlington, KS 66839 l 620-364-8831

Enclosure to RA 21-0062 ENCLOSURE Wolf Creek Nuclear Operating Corporation Containment Inservice Inspection Program Owners Activity Report (Form OAR-1, Report Number WCRE-36, I3-P1-RF24)

(4 pages)

FORM OAR-1 OWNERS ACTIVITY REPORT Report Number ___WCRE-36, I3-P1-RF24____________________________________________________________________

Plant ___Wolf Creek Generating Station, 1550 Oxen Lane Northeast, Burlington, Kansas 66839_________________________

Unit No. __1_____________ Commercial service date __9-3-1985__________Refueling outage no.__ RF-24______________

(if applicable)

Current inspection interval

_3rd__________________________________________________________________________________________________

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

Current inspection period

__1st__________________________________________________________________________________________________

(1st, 2nd, 3rd)

Edition and Addenda of Section XI applicable to the inspection plans _2013 Edition_____________

Date and revision of inspection plans _WCRE-36 Rev. 4, dated 10-21-2020 ___________________________________________

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 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-24 conform to the requirements of Section XI.

(refueling outage number)

Signed _____ ______ISI Engineer__ Date ____07/21/21__________________________

Owner or Owners Designee, Title 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 Inspection and Insurance Company ____ of __Hartford, CT__ 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.

_____________________________________ Commissions 15482 C I N R .

Inspectors Signature National Board Number and Endorsement 7/28/21 Date______________________________

OAR-1 I3-P1-RF-24 Page 1 of 4

TABLE 1 ITEMS WITH FLAWS OR RELEVANT CONDITIONS THAT REQUIRED EVALUATION FOR CONTINUED SERVICE Examination Item Description Evaluation Description Category and Item Number E-C/E4.11 Containment Metallic Liner A small pitting was discovered Surface of Reactor Cavity Sump on the north wall of the incore sump below the only plug on the wall. Upon measurements pit was identified to be no more than 0.045 deep. Engineering evaluation under change package 012758 was used to allow the pitting to be under acceptable margins. Per change package pit depth equal or less than 0.150 and a diameter equal or less than 2 is acceptable to use-as-is.

OAR-1 I3-P1-RF-24 Page 2 of 4

TABLE 2 ABSTRACT OF REPAIR/REPLACEMENT ACTIVITIES REQUIRED FOR CONTINUED SERVICE Code Item Description of Work Date Repair/Replacement Class Completed Plan Number Description Note 1 None OAR-1 I3-P1-RF-24 Page 3 of 4

ATTACHMENT 1 As specified in the inspection plan, WCRE-36, this attachment is added to meet the requirements of 10 CFR 50.55a(b)(2)(viii)(H) and 10 CFR 50.55a(b)(2)(ix)(A)(2) 10 CFR 50.55a(b)(2)(viii)(H)

As noted in WCRE-36, there are no inaccessible areas identified that meet the criteria of this section.

10CFR 50.55a(b)(2)(ix)(A)(2)

As noted in WCRE-36, there are no inaccessible areas identified that meet the criteria of this section.

OAR-1 I3-P1-RF-24 Page 4 of 4