NRC 2012-0014, Filing of Owner'S Containment Inservice Inspection Summary Report for Refueling Outage U1R33

Filing of Owner'S Containment Inservice Inspection Summary Report for Refueling Outage U1R33

ML12065A025
Person / Time
Site:	Point Beach
Issue date:	03/02/2012
From:	Jim Costedio Point Beach
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
NRC 2012-0014
Download: ML12065A025 (5)

Text

March 2,2012 NRC 2012-0014 10 CFR 50.55a U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555 Point Beach Nuclear Plant, Unit 1 Docket 50-266 Renewed License No. DPR-24 Filing of Owner's Containment Inservice Inspection Summarv Report for Point Beach Nuclear Plant Refuelins Outage U1R33 NextEra Energy Point Beach, LLC (NextEra) is submitting the inservice inspection summary report for inspections conducted prior to and during the Point Beach Nuclear Plant (PBNP) refueling outage U1R33 that concluded on December 17,2011. The enclosed IWE Class MC and IWL Class CC report is submitted pursuant to the requirements of Subarticle IWA-6240 of the 2001 Edition with Addenda through 2003 of Section XI of the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code and ASME Code Case N-532-4.

The enclosure to this letter contains the summary report, which includes completed Form OAR-1, "Owner's Activity Report" for inservice inspections for the Class MC and CC components. The report is for the first outage of the Second Period of the Second 10-year Interval for Class MC and CC at PBNP Unit 1.

Very truly yours, NextEra Energy Point Beach, LLC James Costedio Licensing Manager Enclosure Administrator, Region Ill, USNRC Project Manager, Point Beach Nuclear Plant, USNRC Resident Inspector, Point Beach Nuclear Plant, USNRC PSCW Mike Verhagen, State of Wisconsin NextEra Energy Point Beach, LLC, 6610 Nuclear Road, Two Rivers, WI 54241

ENCLOSURE NEXTERA ENERGY POINT BEACH, LLC POINT BEACH NUCLEAR PLANT, UNIT 1 OAR-I, OWNER'S ACTIVITY REPORT FOR INSERVICE INSPECTION, FOR CLASS MC and CC COMPONENTS 3 pages follow

FORM OAR- 1 OWNER'S ACTIVITY REPORT Report Number U1R33 Outage Class MC and CC IS1 Examination Plant NextEra Enerriv Point Beach Nuclear Plant, 6610 Nuclear Road, Two Rivers, Wisconsin 54241 Unit No. 1 Commercial Service Date December 1970 Refueling Outage No. UlR33 (If applicable)

Current Inspection Interval Second (Ist, 2nd, 3rd, 4th, other)

Current Inspection Period Second (lst, 2nd, 3rd)

Edition and Addenda of Section XI applicable to the inspection plans 2001 Edition 2003 Addenda Date and Revision of inspection plans Class MC: Januarv 7.201 1 I Revision 2. Class CC: June 11,2010 / Revision 2 Edition and Addenda of Section XI applicable to repairslreplacements activities, if different than the inspection plans Same Code Cases used: N-532-4, N-739, N-753 (If applicable)

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 repairlreplacement activities and evaluations supporting the completion of UlR33 (refueling outage number) 1 conform to the requirements of Section XI.

Signed Containment Promams Coordinator Date 2 - 21 ' Za/

Owner & 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 Wisconsin and employed by Hartford Steam Boiler of 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 repairlreplacement activities and evaluations 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 loss o any kind arising fi-om or connected with this inspection.

C Commissions WI 929625 A,I,N National Board, State, Province, and Endorsements Date

Table I Items with Flaws or Relevant Conditions that Required Evaluation for Continued Service Examination Category and ltem Number ltem Description Evaluation Description Ultrasonic thickness measurements recorded for the liner plate ranged from 0.135 to 0.219 inches. All the readings are less than the nominal 0.25 inch thickness, and some are less than the 10% wall loss thickness of 0.225 inches. The condition of Containment this liner plate was previously noted during U1R26 in 2001. A E-C Liner Plate at design evaluation conducted at the time accepted a base E4.12 Core Hole metal thickness of 0.1 16 inches and is documented in 1CH-10 Condition Report CR 01-1220. Since the current readings are larger than 0.116 inches, they are bounded by the previous evaluation and are acceptable. The liner plate at 1CH-10 will continue to be monitored for material loss in accordance with IWE-2420(b).

Minimum ultrasonic thickness measurements recorded for the unpainted penetration housings were 0.319 inches for 1CPP-50 and 0.316 inches for 1CPP-51. These readings are less than the nominal 0.375 inch thickness of the housing and less than the 10% wall loss thickness of 0.3375 inches.

Calculation 1999-0109 presents a generic evaluation to Containment determine a bounding housing minimum thickness for Piping containment piping penetrations on both units for a number of E-C Penetrations penetrations including 1CPP-50 and 1CPP-51. The minimum E4.12 ICPP-50 and required thickness was determined to be 0.31 inches.

1CPP-51 Calculation 1999-0109-000-A revised the minimum housing thickness to 0.125 inches for penetrations CPP-50 and CPP-51 on both units. Since the current readings are greater than the required minimum thickness, they are bounded by the previous evaluation and are acceptable. Penetrations 1CPP-50 and 1CPP-51 will continue to be monitored for material loss in accordance with IWE-2420(b).

The minimum ultrasonic thickness measurement recorded for the penetration housings were 0.335, 0.333, 0.334, and 0.327 inches, respectively, taking into account paint thickness. These Containment are less than the nominal 0.375 inch thickness and less than Piping the 10% wall loss thickness of 0.3375 inches. Calculation Penetrations 1999-0109 presents a generic evaluation to determine a E-C 1CPP-38, bounding housing minimum thickness for containment piping E4.12 1CPP-43, penetrations on both units for a number of penetrations 1CPP-45, including 1CPPs 38, 43, 45, and 46. The minimum required and thickness was determined to be 0.31 inches. Since the current 1CPP-46 minimum readings are greater than the required minimum thickness, they are bounded by the previous evaluation and are acceptable.

Table 2 Abstract of RepairIReplacement Activities Required for Continued Service Repair/

Replacement Date Plan Code Class Item Description Description of Work Completed Number Replaced swing bolts, pins, Equipment Hatch studs, nuts, and washers as 2011-0058 11/22/2011 Flange Bolting needed with new. Rev 4 WO-394930