ML20195G713

Forwards Owner Data Rept for Inservice Insp for Facility, Jan-Mar 1988, for Review.Util Performed Several Insps Not Specifically Required by ASME Code,Section Xi,On Selected Class 1,2 & 3 Components

ML20195G713
Person / Time
Site:	Hatch
Issue date:	06/21/1988
From:	Hairston W GEORGIA POWER CO.
To:	NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
Shared Package
ML20195G718	List: ML20195G713 ML20195G725
References
SL-4803, NUDOCS 8806280113
Download: ML20195G713 (3)

Text

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o 3P m A rue Atlanta, Georg'a 30308 ...

Telephone 404 526-6526 .

n MaMg Address:

Post Of t:ce Box 4545 Atlanta, Georg a 30302 -

Georgia Power Nuclear Operations Department IT sm!*en (ext"c system SL-4803 0322I X7GJ17-H790 June 21, 1988 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Hashington, D.C. 20555 NRC DOCKET 50-366 OPERATING LICENSE NPF-5 EDHIN I. HATCH NUCLEAR PLANT UNIT 2 OWNER'S DATA REPORT FOR INSERVICE INSPECTION HINTER 1988 MAINTENANCE / REFUELING OUTAGE Gentlemen:

Pursuant to the requirements of Article IHA-6000 of the ASME Code,Section XI, enclosed for your review is the Owner's Data Report for Inservice Inspection (Form NIS-1) for the inservice inspection activities conducted at Plant Hatch Unit 2 during the Hinter 1988 maintenance /

refueling outage.

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

o In response to the Surry pipe break incident, GPC performed ultrasonic testing (UT) thickness measurements on selected components in the extracted steam, auxiliary vents and drain, and condensate /feedwater piping system. Erosion / corrosion indications were acceptable.

o A remote ultrasonic examination of the shroud access cover was performed utilizing both a 45-degree shear wave and a 60-degree refracted longitudinal wave technique. No indications associated with intergranular stress corrosion cracking or other flaw conditions were detected.

o All 20 jet pump hold-down beams were UT examined per General Electric (GE) Service Information Letter (SIL)-330. Jet pump beam No. 20 had a crack-like indication, and was removed and replaced. The replacement beam was UT examined and found to be acceptable.

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-GeorgiaPower A U.S. Nuclear Regulatory Commission June 21, 1988 Page Two o All 36 shroud head hold-down bolts were UT examined per GE SIL-433. Eight bolts had crack-like indications (Nos. 6,10,13, 17, 24, 32, 34, and 36). Six bolts were replaced (Nos. 6, 10, 17, 24, 32, and 36). The remaining two bolts were evaluated and deemed to be acceptable by GE.

o Per Nuclear Regulatory Commission Bulletin 80-13, the core spray sparger and associated piping were visually examined. No reportable indications were detected.

o Visual examination of the jet pump mixing nozzles revealed evidence of erosion in the throat area. The erosion was evaluated by GE and deemed acceptable with recommendations for additional monitoring in future outages.

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

Sincerely, ed.3.l M-- T H. G. Hairston, III GKH/je

Enclosure:

Owner's Data Report for Inservice Inspection - Edwin I. Hatch Nuclear Plant - January 1988 - March 1988.

cc: (See next page.)

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GeorgiaPower A U.S. Nuclear Regulatory Commission June 21, 1988 Page Three c: Georaia Power Comoany Fr. J. T. Beckham, Jr., Vice President - Plant Hatch

-Mr. L. T. Gucwa, Manager Nuclear Safety and Licensing GO-NORMS U.S. Nuclear Regulatory Commission. Washington. D.C.

Mr. L. P. Crocker, Licensing Project Manager - Hatch U.S. Nuclear Reaulatory Commission. Region 11 Dr. J. N. Grace, Regional Administrator Mr. P. Holm.es-Ray, Senior Resident Inspector - Hatch 0322I ru m _ _ _