ML061730111

Day Report Per First Revised Order EA-03-009

ML061730111
Person / Time
Site:	Palisades
Issue date:	06/21/2006
From:	Harden P Nuclear Management Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
EA-03-009
Download: ML061730111 (4)

Text

Palisades Nuclear Plant Operated by Nuclear Management Company, LLC June 21,2006 10 CFR 50.54(f)

EA-03-009 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001 Palisades Nuclear Plant Docket 50-255 License No. DPR-20 60-Day Report Per First Revised Order EA-03-009

References:

1) "Issuance of First Revised Order (EA-03-009) Establishing lnterim Inspection Requirements for Reactor Pressure Vessel Heads at Pressurized Water Reactors," dated February 20, 2004

2) Letter from NMC to NRC, "Response to Revised Order EA-03-009,

'Issuance of First Revised NRC Order (EA-03-009) Establishing lnterim lnspection Requirements for Reactor Pressure Vessel Heads at Pressurized Water Reactors, "' dated March 8, 2004 By letter dated February 20, 2004, the Nuclear Regulatory Commission (NRC) issued Order EA-03-009 (Reference 1). By letter dated March 8, 2004, Nuclear Management Company, LLC (NMC) consented to the Order for the Palisades Nuclear Plant (PNP)

(Reference 2).

Section IV.E, of Reference 1, required that inspection results be provided within 60 days after returning the plant to operation after refueling. NMC completed the required inspections during the spring refueling outage, and PNP was returned to service on May 10, 2006. Enclosure 1 provides details of the inspection results.

27780 Blue Star Memorial Highway Covert, Michigan 49043-9530 Telephone: 269.764.2000

Document Control Desk Page 2 Summary of Commitments This letter contains no new commitments and no revisions to existing commitments.

I declare under penalty of perjury that the foregoing is true and correct. Executed on June 21,2006.

Paul A. Harden Site Vice President, Palisades Nuclear Plant Nuclear Management Company, LLC Enclosure (1)

CC Administrator, Region Ill, USNRC Project Manager, Palisades, USNRC Resident Inspector, Palisades, USNRC

ENCLOSURE 1 PNP INSPECTION RESULTS

1.0 INTRODUCTION

During the 2004 refueling outage, Palisades Nuclear Plant (PNP) performed its first nonvisual examination of the reactor pressure vessel (RPV) head in accordance with Section IV.C(2) of the First Revised Order, EA-03-009, "Issuance of First Revised Order (EA-03-009) Establishing Interim Inspection Requirements for Reactor Pressure Vessel Heads at Pressurized Water Reactors." The inspection of the RPV head penetrations identified two leak path detection indications on penetrations 29 and 30. The two penetrations were repaired during the 2004 refueling outage using the AREVA ID temper bead repair process. As a result, the RPV head was placed into the high susceptibility category per Section 1V.B of the revised Order. Therefore, PNP was required to perform examinations per the requirements of Section IV.C.(I) of the revised Order during both the 2004 and the 2006 refueling outages.

PNP was returned to operation from the 2006 refueling outage on May 10, 2006.

During the refueling outage, the reactor vessel head and head penetration nozzles were inspected using the techniques of paragraph IV.C.(5)(a) and paragraph IV.C.(5)(b) of the revised Order

2.0 DESCRIPTION

OF INSPECTION METHODS The examinations were performed by qualified AREVA personnel using qualified procedures. The inspection included performing ultrasonic examinations from the inner diameter (ID) of the nozzle, for all 54 of the RPV head penetrations.

Additionally, a small portion of the ICI nozzle below the J-groove weld was ultrasonically examined from the outer diameter to ensure that the required examination volume was achieved. The RPV head vent line penetration was also examined by eddy current on the surface of the J-groove weld. The vent line does not extend below the RPV head inside surface. Additionally, the bare metal visual inspection was performed by direct visual examination.

3.0 REACTOR PRESSURE VESSEL HEAD INSPECTION RESULTS Bare Metal Visual Exam A bare metal visual examination was performed of the reactor vessel surface including 360 degrees around each RPV head penetration. This inspection sho,wed no signs of leakage.

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Non Visual Examinations a) CRDM and ICI Penetrations The ultrasonic examination of the nozzle penetrations was performed to look for evidence of cracking in the nozzle base material. Additionally, the interference fit region of the nozzles was evaluated for evidence of a leak path that might be caused by cracking of the J-groove weld. No cracking or leak path indications were observed.

b) Vent Line Penetration The RPV head vent line penetration base metal was examined by ultrasonic techniques and the surface of the J-groove weld was examined by eddy current techniques. The vent line does not extend below the RPV head inside surface. No flaw indications were detected during the examinations.

NMC has complied with the requirements of the First Revised Order for the 2006 refueling outage. Based on the results of the examinations performed during the refueling outage, NMC concluded that the RPV head penetrations that were returned to service were not degraded, and no wastage of the RPV head occurred.

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