HL-4643, Forwards Owner Data Rept for ISI Ei Hatch Nuclear Plant Unit 2,Mar-Apr 1994

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Forwards Owner Data Rept for ISI Ei Hatch Nuclear Plant Unit 2,Mar-Apr 1994
ML20070F076
Person / Time
Site: Hatch Southern Nuclear icon.png
Issue date: 07/08/1994
From: Beckman J
GEORGIA POWER CO.
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML20070F080 List:
References
HL-4643, NUDOCS 9407180165
Download: ML20070F076 (3)


Text

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Georg
a Power Company 40 invemeu Center Parkway s' , 4 Post OHice Scx 1295 Birmingham, Alabama 35201 Telmhone 205 877-7279 n '

J. T. Beckham, Jr.

Vice Pret.dont - Nuckar Georgia Power Haich Project m w ,,r < ,, ,

Docket No. 50-366 HL-4643 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555 Edwin I. Hatch Nuclear Plant - Unit 2 InsersiceInspection Associated With the Spring 1994 Maintenance /ReJueling Outag Gentlemen:

In accordance with the requirements of Article IWA-6000 of the . ASME Code, Section XI, enclosed for your review is the Owner's Data Report for Insersice Inspection (Form NIS-1) for the inservice inspection activities conducted at Plant Hatch Unit 2 during the Spring 1994 maintenance / refueling outage.

In addition to the Code required inspections, Georgia Power Company (GPC) has performed several inspections, not specifically required by the ASME Code Section XI, on selected Class 1,2, and 3 components. The Code and augmented inspection performed at Unit 2 are summarized below and reported in the Owner's Data Report.

  • Ultrasonic examination of austenitic stainless steel piping welds in the primary coolant pressure boundary per Generic Letter 88-01 and NUREG-0313. Revision 2. The results are provided in the enclosure under Class I components
  • Ultrasonic thickness measurements were performed on selected components in the extraction steam and condensate /feedwater system piping per GPC's ongoing erosion / corrosion program. A portion of these components were selected due to their similarity in design and operating conditions to components involved with the pipe break incident at Plant Surry and the feedwater erosion / corrosion recently reported on Susquehanna.

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Georgia Power d U.S. Nuclear Regulatory Commission Page 2 July 8, 1994

. The shroud head bolts were visually examined per Service Information Letter (SIL) 433.

. Both shroud suppon access hole covers were removed and replaced with bolted covers. This provides fmal resolution of ultrasonic indications noted during the Fall 1992 refueling outage.

  • The core shroud was visually and ultrasonically examined per SIL 572, Revision 1.

Ultrasonic indications were evaluated using fracture mechanics and found to be acceptable for at least two cycles of operation without reexamination. Details of the indications and fracture mechanics evaluation will be provided in a separate submittal.

If you have any questions in this regard, please contact this office.

Sincerely, b

J. T. Beckham, Jr. /(

JKB/cr

Enclosure:

Owner's Data Report for Insersice Inspection - Edwin 1.1-latch Nuclear Plant Unit 2 - September 1992 - November 1992 cc: Georgia Power Company Mr. H. L. Sumner, General Manager - Nuclear Plant NORMS U.S Nuclear Rezulatory Commission. II'ashington. D.C.

Mr. K. Jabbour, Licensing Project Manager - Hatch U.S. Nuclear Regulatory Commission. Region ll Mr. S. D. Ebneter, Regional Administrator Mr. B. L. Holbrook, Senior Resident Inspector - Hatch

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1 Enclosure Edwin I. Ilatch Nuclear Plant Inservice Inspection Associated With The Spring 1994 Maintenance / Refueling Outage Owner's Data Report