ML15217A022

Containment Inservice Inspection Program Second Interval, Second Period, Refueling Outage 20 Owner'S Activity Report

ML15217A022
Person / Time
Site:	Wolf Creek
Issue date:	07/28/2015
From:	Koenig S Wolf Creek
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
RA 15-0053
Download: ML15217A022 (6)

Text

vv LF CREEK' NUCLEAR OPERATING CORPORATION Steven R. Koenig Manager Regulatory Affairs July 28, 2015 RA 15-0053 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555

Subject:

Docket No. 50-482: Containment Inservice Inspection Program Second Interval, Second Period, Refueling Outage 20 Owner's Activity Report Gentlemen:

Enclosed is the Wolf Creek Nuclear Operating Corporation (WCNOC) Owner's Activity Report (Form OAR-i, Report Number WCRE-22, 12-P2-RF20) for containment inservice inspections performed after Wolf Creek Generating Station's (WCGS) nineteenth refueling outage (RF19) that concluded on May 13, 2014, and up to, and including, WCGS' twentieth refueling outage (RF20) that concluded on May 3, 2015. RF20 was the second refueling outage of the second period of the second interval of the WCNOC Containment Inservice Inspection Program. The enclosed report is submitted pursuant to the requirements of paragraph IWA-6240 of the 2001 Edition through 2003 Addenda of Section XI of the American Society of Mechanical Engineers S(ASME) Boiler and Pressure Vessel Code and ASME Code Case N-532-4.

This letter contains no commitments. If you have any questions concerning this matter, please contact me at (620) 364-4041 or Mr. Bill Muilenburg at (620) 364-4186.

Sincerely, Steven R. Koenig SRK/rlt Enclosure cc: M. L. Dapas (NRC), w/e C. F. Lyon (NRC), w/e N. H. Taylor (NRC), w/e Senior Resident Inspector (NRC), w/e ***,_*--

P0O. Box 411 / Burlington, KS 66839 / Phone: (620) 364-8831 , l _

An Equal Opportunity Employer M/F/HCNET

Enclosure to RA 15-0053 Wolf Creek Nuclear Operating Corporation (WCNOC)

Owner's Activity Report (Form OAR-I, Report Number WCRE-22, 12-P2-RF20)

(4 pages)

FORM OAR-I OWNER'S ACTIVITY REPORT Report Number WCRE-22, 12-P2-RF20 (including MC20)

Plant Wolf Creek Generatinq Station, 1550 Oxen Lane Northeast. Burlington, Kansas 66839 Unit No. 1 Commercial service date 9-3-1985 Refueling outage no. RF-20

{if applicable)

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

Current inspection period 2 nd fist. 2nd, 3rd)

Edition and Addenda of Section Xl applicable to the inspection plans 2001 Edition through 2003 Addenda Date and revision of inspection plans WCRE-22 Rev. 6. dated 12-1-2014 Attachment 1 Edition and Addenda of Section Xl applicable to repair/replacement activities, if different than the inspection plans same Code Cases used: N-532-4, N-686-1 lif applicable)

CERTIFICATE OF CONFORMANCE I certify that (a) the statementa made in this report are correct: Ib) the examinations and tests meet the Inspection Plan as required by the ASME Code, Section Xl; and (c) the repair/replacement activities and evaluations supporting the completion of RF-20 (refueling Outage number) conform to the requirements of Section XI.

Signed - _Ervin J Prather, Responsible Individual Date__5-27-2015____

Owner or Owner's 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 the State or Province of Kansas and employed by The Hartford Steam Boiler Inspection and Insurance Co. of Connecticut 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. concemning the repair/

replacement activities and evaluation described in this report. Furthermore, neither the Inspector nor hia 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 */*573

-- *z/,oa orSae rv ... dEd....t

• Inspector's Sigj(tu r e~tna ur.tae rninadEdreet Date /(,./

OAR-I Palge 1 of/4

'a TABLE I ITEMS WITH FLAWS OR RELEVANT CONDITIONS THAT REQUIRED EVALUATION FOR CONTINUED SERVICE Examination Item Description Evaluation Description Category and Item Number _____________

_________________MC20 ___________

E-C, E4.1 1 2-3-1-C-MB, Moisture Barrier Pits at the moisture barrier liner Containment Incore Tunnel interface were identified which Liner were less than 10% of the wall thickness. The condition was evaluated as acceptable.

Reference BED to WO 11-339212-006.

RF20 E-C, E4. 11 2-3-2-A, Containment Metallic Pits were identified behind the Liner Surface of Normal Sump level instrument bracket support

@ 90 Deg, PLF05A/B for LFLE009A. The pit depth of 5/32" was measured. These pits were evaluated per engineering evaluation and determined

____________________acceptable per CP 014900 E-C, E4. 11 2-3-1l-A, Containment Metallic Pits were identified behind the Liner Surface of Normal Sump level instrument bracket support

@ 270 Deg, PLF05C/D for LFLE010A. The pit depth of 3/64" was measured. These pits were evaluated per engineering evaluation and determined

__________________acceptable per CP 014900 OAR-I Page 2 of 4

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

ATTACHMENT 1 As specified in the inspection plan, WCRE-22, this attachment is added to meet the requirements of 10 CFR 50.55a(b)(Z)(viii)(E) and 10 CFR 50.55a(b)(Z)(ix)(A) 10 CFR 50.55a(b)(Z)(viii)(E)

As noted in WCRLE-22, there are no inaccessible areas identified that meet the criteria of this section.

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

As noted in WCRE-22, there are no inaccessible areas identified that meet the criteria of this section.

OAR-I Page 4 of 4