ML060230053

Containment Inservice Inspection Program First Interval, Second Period Owner'S Activity Reports

ML060230053
Person / Time
Site:	Wolf Creek
Issue date:	01/12/2006
From:	Moles K Wolf Creek
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
RA 06-0001
Download: ML060230053 (17)

Text

W4f&LF CREEK'NUCLEAR OPERATING CORPORATION Kevin J. Mo'es Manager Regulatory Affairs January 12, 2006 RA 06-0001 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555

References:

1) Letter ET 95-0112, dated October 31, 1995, from R. C. Hagan, WCNOC, to USNRC 2) Letter WO 95-0189, dated December 27, 1995, from 0. L.Maynard, WCNOC, to USNRC 3) NRC Letter dated February 9, 1996, from USNRC to Neil S.Cams, WCNOC

Subject:

Docket 50-482: Containment Inservice Inspection Program First Interval, Second Period Owner's Activity Reports Gentlemen:

This submittal provides the Owner's Activity Reports for the second period of the first interval of the WCNOC Containment Inservice Inspection Program. Code Case N-532, "Alternative Requirements to Repair and Replacement Documentation Requirements and Inservice Summary Report Preparation and Submission as Required by IWA-4000 and IWA-6000," requires that an Owner's Activity Report (Form OAR-1) be prepared and certified upon completion of each refueling outage. Each Form OAR-1 prepared during an inspection period shall be submitted following the end of the inspection period.In References 1 and 2, Wolf Creek Nuclear Operating Corporation (WCNOC) requested use of ASME Code Case N-532 in lieu of current ASME Section Xl reporting requirements.

In Reference 3, the USNRC concluded that the proposed alternative to use Code Case N-532 and the clarifications contained within References 1 and 2 provide an acceptable level of quality and safety and approved the use of Code Case N-532 for use at Wolf Creek Generating Station.The enclosures provide the Owner's Activity Reports for the period of September 3, 2001 through May 19, 2005. This timeframe constitutes the second period of the first interval of the WCNOC Containment Inservice Inspection Program. Within this period, Refueling Outages 12 (RF12), 13 (RF13) and 14 (RF14) occurred.

The enclosed Forms OAR-1 (Reports WCRE-I1, 11-P2-RF12; WCRE-11, 11-P2-RF13; and WCRE-11, 11-P2-RF14) correspond to these outages.PO. Box 411 / Burlington, KS 66839 / Phone: (620) 364-8831 4 An Equal Opportunity Employer M/F/HCNVET RA 016-0001 Page 2 of 2 The required 5-year frequency for conducting IWL examinations occurs within periods 1 and 3 of the WCNOC Containment Inservice Inspection Program. Therefore, no IWL examinations were performed during this period (period 2).There are no commitments contained within this letter.If you have any questions concerning this matter, please contact me at (620) 364-4126 or Ms. Diane Hooper at (620) 364-4041.Very truly yours, Kevin J. es KJM/rIt Enclosures cc: J. N. Donohew (NRC), w/e W. B. Jones (NRC), wfe B. S. Mallett (NRC), w/e Senior Resident Inspector (NRC), w/e FORM OAR-I OWNER'S ACTIVITY REPORT Report Number WCRE-I 1. II-P2-RF-12 Owner Wolf Creek Nuclear ODeratine Corporation (Name and Address of Owner)Plant WolfCreek Generatinz Station. 1550 Oxen Lane Northeast.

Burlington.

Kansas 66839 (Name and Address of Plant)Unit No. I (If applicable)

Commercial service date 9-3-85 Refueling outage no.12 Current inspection interval I" Interval for the Containment Inservice Inspection Program (Ist. 2nd. 3rd. 4th. other)2.id period for the Containment Inservice Inspection Proeram Current inspection period (I st. 2nd. 3rd)1 tM edition with no addenda Edition and Addenda of Section Xi applicable to the inspection plan Date and revision of inspection plan%VCRE-l I Rev. (). dated 10-24-2000 Edition and Addenda of Section Xi applicable to repairs and replacements.

if different than the inspection plan 1992 edition with 1992 addenda CERTIFICATE OF CONFORMANCE I certify that the statements made in this Owner's Activity Report arc correct. and that the examinations, tests, repairs. replacements, evaluations.

and corrective measures represented by this report conform to the requirements of Section Xl.Certificate of Authorization No.N/A Expiration Date N/A Dennis E Tougaw iZ, 4.1 O.,4f (If aoolicablc)

Signed Date Z/ i=-TIylllsx:r O ner or Owner's DesignW, Title CERTIFICATE OF INSERVICE INSPECTION 1, 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 Factory Mutual Insurance Company Johnston.

Rhode Island described in this Owner's Activity Report, during the period September 3.2001 to April 27. 2002 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 examinations.

tests. repairs. replacements.

evaluations and corrective measures 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 con inspection.

Commissions KS#299 of have inspected the items , and state that I/ Inspector'd Signature Date <L _ 6 __National Board, State, Province, and Endorsements This formn (E00127) may be obtained from the Order Dept.. ASME. 22 Law Drive. Box 2300. Fairfield.

NJ 07007-2300

(,MR-i II-P2-Rr-12 I'alze I ol'J TABLE 1 ABSTRACT OF EXAMINATIONS AND TESTS Completion of RF-12 (I-1, P-2)Total Total Total Total Examinations Examinations Examinations Examinations Credited (%) to Examination Required For Credited for This Credited (%) for Date for the Category

• The Interval Period** The Period Interval Remarks E-A 826 1. 0.1 33 Note* No examinations pertaining to Subsection 1W!. it-ere peribrmed d1uring this time.** Tlhis column is interpreted to represent ithe cunulahte num'ber of exams perfbrmed to date in this period.Note: 100% of the Accessible Surface Areas of Category E-A are required to be inspected each Inspection Period per Table IWE-2500-1 OAR-I II-P2-RF-12 I'Pae 2 ot!

TABLE 2 ITEMS WITH FLAWS OR RELEVANT CONDITIONS THAT REQUIRED EVALUATION FOR CONTINUED SERVICE Flaw Flaw or Relevant Condition Found Examination Item Item Description Characterization (IWA- During Scheduled Section XI Category Number 3300) Examination or Test (Yes or No)E-A E1.12 Incore Tunnel Sump Liner Localized pitting in the liner Yes floor. The pits were of various sizes, 3/4 inch to 2 inches in diameter, 1/32 inch to 5/32 inch in depth.Attachment I provides further information as required by the Containment Inseqvice Inspection Program.OAR-1 II-P2-RF-12 Page 3 of 5 I&b TABLE 3 ABSTRACT OF REPAIRS, REPLACEMENTS, OR CORRECTIVE MEASURES REQUIRED FOR CONTINUED SERVICE Flaw or Relevant Condition Found Repair, During Scheduled Repair/Replacement, .Section XI Replacement Code or Corrective Item Description Examination or Date Plan Class Measure Description of Work Test (Yes/No) Complete Number There were no repairs, replacements, or corrective measures performed on any Class MC or CC items during the period of this report, which were required due to an item containing a flaw or relevant condition that exceeded acceptance criteria.OAR-I II-P2-RF-12 Page 4 of 5 Attachment I RF-12 IWE Examination Revealing Flaw or Area Of Degradation Exceeding Acceptance Standards 1) Description of flaw or area, including the extent of degradation, and the conditions that led to the degradation.

Localized pitting was found in the liner floor of the Incore tunnel sump. The pits were of various sizes, % to 2 inches in diameter, 1/32 to 5/32 inch in depth. Holes in the coating on the liner floor had permitted this pitting to initiate.

The holes in the coating were caused by inadequate protection of the coating during a welding operation on nearby piping and components.

The inadequate protection allowed sparks and slag from the welding to burn holes in the coating, which allowed the pitting to initiate.2) The acceptability of each flaw or area.The areas were acceptable for continued service as sufficient thickness of the liner exists at the bottom of the pits to maintain the liner plate function.3) A description of necessary corrective actions.The coating on the sump liner was repaired to prevent further pitting or loss of material.Reference WO 02-235562-000 and CCP 10183 OAR-I II-P2-RF-12 Page 5 of 5 FORM OAR-I OWNER'S ACTIVITY REPORT Report Number WCRE-I I, II-P2-RF-13 Owner Wolf Creek Nuclear Operating Corporation, 1550 Oxen Lane Northeast, Burlington, Kansas 66839 (Name and Address of Owner)Plant Wolf Creek Generating Station, 1550 Oxen Lane Northeast, Burlington, Kansas 66839 (Name and Address of Plantl 9-3-85 Refueling outage no.Unit No. I Commercial service date 13 (If applicable)

Current inspection interval 1' Interval for the Containment Inservice Inspection Program (Ist. 2nd. 3rd. 4th. other)2nd period for the Containment Inservice Inspection Program Current inspection period (Ist. 2nd. 3rd)1998 edition with no addenda Edition and Addenda of Section Xl applicable to the inspection plan Date and revision of inspection plan WCRE-I I Rev. 0, dated 10-24-2000 Edition and Addenda of Section XI applicable to repairs and replacements, if different than the inspection plan 1992 edition with 1992 addenda CERTIFICATE OF CONFORMANCE I certify that the statements made in this Owner's Activity Report are correct, and that the examinations, tests, repairs, replacements, evaluations, and corrective measures represented by this report conform to the requirements of Section XI.Certificate of Authorization No.Signed Dennis E. Tougaw NIA Expiration Date N/A (If atolicable)

Date __ -I_ -______o..S.,.v9.

^ ., .Of Owner4'r (C5wner's Designee, Titl/'CERTIFICATE OF INSERVICE INSPECTION 1, 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 Company of Connecticut of Hartford, Connecticut have inspected the items described in this Owner's Activity Report, during the period April 28, 2002 to December 2,2003 , 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 examinations, tests, repairs, replacements, evaluations and corrective measures 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 arisium ectedtth i pection.Commissions KS#tS86 A, B, N, I J Inspector's Signature National Board, State, Province, and Endorsements Date // C This form (EO0127) may be obtained from the Order Dept., ASME, 22 Law Drive, Box 2300, Fairfield, NJ 07007-2300 OAR-I JI-P2-RF-13 Page I of 5 TABLE 1 ABSTRACT OF EXAMINATIONS AND TESTS Completion of RF-13 (I-1, P-2)Total Total' Total -Total Examinations Examinations

.Examinations Examinations Credited (%)to Examination Required For Credited for This Credited (%) for -Date for the Category

• The Interval Period**.

The Period Interval -. Remarks E-A 826 222 27 60 Note* No examinations pertaining to Subsection IWL were performed during this time.*

• This column is interpreted to represent the cumulative number of exams performed to date in this period.Note: I 00% of the Accessible Surface Areas of Category E-A are required to be inspected each Inspection Period per Table IWE-2500-1 CAR-I II-P2-RF-13 Page 2 of 5 TABLE 2 ITEMS WITH FLAWS OR RELEVANT CONDITIONS THAT REQUIRED EVALUATION FOR CONTINUED SERVICE Flaw Flaw or Relevant Condition Found Examination Item Item Description Characterization (IWA- During Scheduled Section XI Category Number 3300) Examination or Test (Yes or No)E-A E 1.12 Liner of the Sump at 270 Localized pitting in the liner Yes Degrees floor. The pit sizes ranged 1/16 inch diameter to clustered pitting with a single pit major dimension of 3/8 inch in width, and from 3/32 inch to 7/64 inch in depth.E-A E- .1 I Penetration P-1 6 Pitting at the 11:00 position.

Yes The largest pit was measured at 1/16 inch in depth and 1/8 inch in diameter.Attachment I provides further information as required by the Containment Inservice Inspection Program.OAR-I 11-P2-RF-13 Page 3 of 5 TABLE 3 ABSTRACT OF REPAIRS, REPLACEMENTS, OR CORRECTIVE MEASURES REQUIRED FOR CONTINUED SERVICE Flaw or Relevant Condition Found Repair, During Scheduled Repair/Replacement, Section Xl Replacement Code or Corrective Item Description Examination or Date Plan Class Measure Description of Work Test (Yes/No) Complete Number C-C Corrective Concrete surface on the East side Repair of concrete surface area where Yes 11126102 2002-052 Measure of the reactor building, at the top small pieces of grout from an earlier of the construction opening construction repair have started to separate and come off the face of the I reactor building._

OAR-I II-P2-RF-13 rPage 4 of 5 Attachment 1 RF-1 3 IWE Examination Revealing Flaw or Area Of Degradation Exceeding Acceptance Standards Flaws in the Liner of the Sump at 270 Degrees 1) Description of flaw or area, including the extent of degradation, and the conditions that led to the degradation.

Localized pitting was found in the liner of the sump at 270 degrees. The pits were of various sizes, ranging from isolated 1/16 inch diameter to clustered pitting with a major diameter of 3/8 inch in width, and from 3/32 to 7/64 inch in depth. Degradation of the surface coating by aging and perhaps localized damage, combined with being normally wet, has led to this corrosion.

2) The acceptability of each flaw or area.The areas were acceptable for continued service as sufficient thickness of the liner exists at the bottom of the pits to maintain the liner plate function.3) A description of necessary corrective actions.The coating on the sump liner was repaired to prevent further pitting or loss of material.Reference WO 03-257157-000 and CCP 11255 Flaws located on Containment Penetration P-16 4) Description of flaw or area, including the extent of degradation, and the conditions that led to the degradation.

Pitting was noted at the 11:00 position (looking DS). The largest pits measured were 1/16 inch in depth and 1/8 inch in diameter.

Degradation of the surface coating by aging and perhaps localized damage led to this corrosion.

5) The acceptability of each flaw or area.The areas were acceptable for continued service as sufficient thickness of the liner exists at the bottom of the pits to maintain the liner plate function.6) A description of necessary corrective actions.The coating on the penetration was repaired to prevent further pitting or loss of material.Reference WO 03-2571757-000 and CCP 11267 OAR-I JJ-P2-RF-13 Page S of S FORM OAR-] OWNER'S ACTIVITY REPORT W-CRE-II, II-P2-RF-14 Report Number Owner Wolf Creek Nuclear Operating Corporation, 1550 Oxen Lane Northeast, Burlington, Kansas 66839 (Name and Address of Owner)Plant Wolf Creek Generating Station, 1550 Oxen Lane Northeast, Burlington, Kansas 66839 (Name and Address of Plant)9-3-85 Refueling outage no.Unit No. I (If applicable)

Current inspection interval Commercial service date 14_" Interval for the Containment Inservice Inspection Program (st. 2nd. 3rd. 4th. other)2" period for the Containment Inservice Inspection Program (Ist. 2nd. 3rd)Current inspection period Edition and Addenda of Section XI applicable to the inspection plan 1998 edition with no addenda Date and revision of inspection plan WCRE-I I Rev. 2, dated 6-1-2004 Edition and Addenda of Section Xl applicable to repairs and replacements, if different than the inspection plan 1992 edition with 1992 addenda CERTIFICATE OF CONFORMANCE I certify that the statements made in this Owner's Activity Report are correct, and that the examinations, tests, repairs, replacements, evaluations, and corrective measures represented by this report conform to the requirements of Section XM.Certificate of Authorization No.N/A (If aoolicable)

Expiration Date N/A Dlennis E. Thiiaaw ; _%Z'4d Signed Fngineer Date l/ 20Co5 Owfier or Owner's Designed; 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 Company of Connecticut of Hartford, Connecticut have inspected the items described in this Owner's Activity Report, during the period December 3, 2003 to May 19,2005 , 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 Xl.By signing this certificate neither the Inspector nor his employer makes any warranty, expressed or implied, concerning the examinations, tests, repairs, replacements, evaluations and corrective measures 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 arisin m o"Anectdlwith thjs inspection.

Commissions KS#586 A, B, N, I National Board, State, Province, and Endorsements Signature Date _ III I_/ I This form (EO0127) may be obtained from the Order Dept., ASME, 22 Law Drive, Box 2300, Fairfield, NJ 07007-2300 OAR-I I1-P2-RF-14 Page I of S TABLE 1 ABSTRACT OF EXAMINATIONS AND TESTS Completion of RF-14 (I-1, P-2)Total Total .Total Total Examinations Examinations .Examinations Examinations

-Credited (%) to Examination Required For Credited for This Credited (%) for Date forthe Category,'

The Interval Period** The Period Interval Remarks E-A 823 274 33 67 Notel E-C 8 4 50 50 Note 2* No examinations pertaining to Subsection JWL were performed during this time.** This column is interpreted to represent the cumulative number of exams performed to date in this period.Note 1: 100% of the Accessible Surface Areas of Category E-A are required to be inspected each Inspection Period per Table IWE-2500-1 Note 2: In accordance with IWE-1241, 4 components were reclassified as Category E-C in Period 2 resulting in 8 examinations in this Category being required for the Interval.

Three of these components had previously been examined as Category E-A components.

OAR-I II-P2-RF-14 Page 2 of 5 TABLE 2 ITEMS WITH FLAWS OR RELEVANT CONDITIONS THAT REQUIRED EVALUATION FOR CONTINUED SERVICE Flaw Flaw or Relevant Condition Found Examination Item Item Description Characterization (IWA- During Scheduled Section XI Category Number 3300) Examination or Test (Yes or No)E-C E4.1 1 Liner of the Sump at 90 Pitting in the liner. The pit Yes Degrees sizes on the bottom were clusters up to 3/4 inch long by 5/8 inch wide, and from 1/32 inch to 3/32 inch in depth. One pit was on the side of the liner measuring I inch long by 1/2 inch wide by_ _ 3/32 inch deep.E-A E-1.1 I Containment Dome Liner Indentations in the dome Yes liner. The indentations noted in a coated area were characterized as"deformation" and "other signs of distress".

Those noted in a non-coated area were characterized as"deformation".

The size of the indentations are 1/8 inch in diameter and 1/32 inch in_ _ depth.Attachment I provides further information as required by the Containment Inservice Inspection Program.OAR-I I)-P2-RF-14 Page 3 of 5 TABLE 3 ABSTRACT OF REPAIRS, REPLACEMENTS, OR CORRECTIVE MEASURES REQUIRED FOR CONTINUED SERVICE Flaw or Relevant Condition Found Repair, During Scheduled Repair/Replacement,Section XI Replacement Code or Corrective Item Description Examination or Date Plan Class Measure Description of Work Test (Yes/No) Complete Number There were no repairs, replacements, or corrective measures performed on any Class MC or CC items during the period of this report, which were required due to an item containing a flaw or relevant condition that exceeded acceptance criteria.OAR-I II-P2-RF-14 Page 4 of 5 Attachment I RF-14 IWE Examination Revealing Flaw or Area Of Degradation Exceeding Acceptance Standards Flaws in the Liner of the Sump at 90 Degrees 1) Description of flaw or area, including the extent of degradation, and the conditions that led to the degradation.

Pitting was found in the liner of the sump at 90 degrees. The pit sizes on the bottom of the liner were clusters ranging from 1/2 inch long by 1/2 inch wide to a maximum of 3/4 inch long by 5/8 inch wide, and from 1/32 to 3/32 inch in depth. One pit was noted on the south wall of the liner approximately 9 inches up from the bottom, it measured 1 inch long by 1/2 inch wide by 3/32 inch deep. Degradation of the surface coating by aging and perhaps localized damage, combined with being normally wet, has led to this corrosion.

2) The acceptability of each flaw or area.The areas were acceptable for continued service, as sufficient thickness of the liner exists at the bottom of the pits to maintain the liner plate function.3) A description of necessary corrective actions.The coating on the sump liner was repaired to prevent further pitting or loss of material.Reference WO 05-271950-001 and CCP 11753 Flaws located on Containment Dome Liner 4) Descri~otion of flaw or area, including the extent of degradation, and the conditions that led to the degradation.

Indentations were noted on the dome liner at 2201 ft. elevation and 358° azimuth. There were 10 indentations identified, 4 in a coated area that were characterized as "deformation' and "other signs of distress", and the other 6 in a non-coated area that were characterized as udeformation".

The size of the indentations were 1/8 inch in diameter by 1/32 inch in depth. The indentations have the appearance of a mark left by a chipping hammer and have an old appearance.

Based on this information, the indentations most likely occurred during fabrication of the liner plate or construction and erection.5) The acceptability of each flaw or area.The areas were acceptable for continued service as sufficient thickness of the liner exists at the bottom of the deformation to maintain the liner plate function.6) A description of necessary corrective actions.No corrective actions were necessary.

Reference WO 05-272686-001 and CCP 11797 OAR-I II-P2-RF-14 Page 5 of 5