ML110630146

Duane Arnold Energy Center, Inservice Inspection Report for Cycle 22 and Refueling Outage No. 22 of the Fourth 10-Year ISI Interval

ML110630146
Person / Time
Site:	Duane Arnold
Issue date:	03/03/2011
From:	Costanzo C R Nextera Energy, NextEra Energy Duane Arnold
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
NG-11-0058
Download: ML110630146 (8)

Text

6 Pages Follow

ENCLOSURE TO NG-11-0058 Inservice Inspection Summary Report For Cycle 22 and RFO 22

NextEra Energy Duane Arnold, LLC Duane Arnold Energy Center Inservice Inspection Summary Report For Cycle 22 and RFO 22 Duane Arnold Energy Center 3277 DAEC Rd Palo, IA 52324 Date of Commercial Service February 1, 1975

INDEX

Summary..................................................................................................Se ction 1 OAR-1 Form, Owner's Activity Report......................................................Sect ion 2 Table 1 ....................................................................................................Sect ion 3 Table 2 ....................................................................................................Sect ion 4

Section 1 Summary The Duane Arnold Energy Center, Fourth T en-Year Inservice Inspection (ISI) Plan was developed to comply with 10 CFR 50.55a(g), which implements, by reference, the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code,Section XI, 2001 Edit ion with 2003 Addenda.

The following summary report is being submitt ed pursuant to the r eporting requirements of ASME Section XI as amended by ASME Code Case N-532-4.

This summary report contains the Form OAR-1 Owner's Activity Report and Tables 1 and 2 of the Code Case for Duane Arnold Ener gy Center during C ycle 22 and Refueling Outage No. 22 (RFO22). No indications were found that required evaluation for continued service. RFO22 is the first outage of the second per iod in the fourth inspection interval, and includes Repair/Repla cement Activities from March 5, 2009 (the last submittal) to December 9, 2010.

Section 3 Table 1 Items with Flaws or Relevant Condition that Required Evaluation for Continued Service

Examination Category and Item Number Item Description Evaluation Description None Section 4 Table 2 Abstract of Repair/Replacement Activities Required for Continued Service Code Class Item Description Description of Work Date Completed Repair / Replacement Plan number 1 N2A F002A Weld Weld Overlay 2/15/11 40043846-01 1 DCA-019-SH-4 Recirc Drain Line Springcan Hanger Replaced upper hanger rod on spring can hanger, 9/20/10 A104115 1 N2C F002A Weld Remove surface defect following crown removal 12/09/10 40050708-01 1 N2E F002A Weld Remove surface defect following crown removal 2/15/11 40050707-01 2 HPCI Pump Suction Pipe Restraint HBB-8-SR-3. Reestablish clearance between pipe clamp and pipe. 5/27/09 A96143 2 Detail B Hanger on FSK-3960B Replaced both pipe clamp halves, bolting, & vertical member 9/21/10 A96550 2 1E-201A "A" RHR Heat Exchanger Removed linear defects in upper nozzle & nozzle-to-head weld. 12/09/10 40051839-01 2 1E-201B "B" RHR Heat Exchanger Replaced 34 damaged 1"-8UNC X 11 3/4" studs 1/5/11 1283869-01 3 HBD-25-SG-145 Replaced missing nut 2/22/11 40053288-01 3 HDD001, ESW from 1E235A Replaced section of 1 1/2 " copper tubing 2/16/11 1381517-01 3 1E235B (HBD-025) Replaced bolting on inlet and outlet flanges 9/21/10 1148710 3 1E237B Lube Cooler Head Replaced Lube Cooler Head with a previously installed head 9/20/10 1148714 3 1E235B (HBD-026 Piping) Replaced waterbox studs & nuts 9/21/10 1148710 3 2" HBD-24 Pipe Support Modify ESW 2" HBD-24 PS-1 pipe support to obtain better base plate alignment 1/6/11 1382149-01