ML20236A118

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Forwards Owner Data Rept for Inservice Insp,Ei Hatch Nuclear Plant Unit 1,Sept-Dec 1988, Per Requirements of ASME Code Section XI
ML20236A118
Person / Time
Site: Hatch Southern Nuclear icon.png
Issue date: 03/08/1989
From: Hairston W
GEORGIA POWER CO.
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML20236A121 List:
References
GL-88-01, GL-88-1, HL-350, NUDOCS 8903160393
Download: ML20236A118 (3)


Text

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.X7GJ17-H790 March 8, 1989 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk.

Hashington, D.C. 20555 NRC DOCKET 50-321 OPERATING LICENSE DPR-57 EDWIN I. HATCH NUCLEAR PLANT UNIT 1 OWNER'S DATA REPORT FOR INSERVICE INSPECTLOR FALL 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 1 during the Fall 1988 maintenance /

refueling outage.

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

o Ultrasonic examinations of austenitic stainless steel piping welds in the' primary coolant pressure boundary per Generic Letter 88-01 and NUREG-0313, Revisicn 2. Results are discussed in the Enclosure under " Class 1 Examinations."  ;

o Feedwater nozzle and control rod drive return line welds were examined per NUREG-0619. No reportable indications were detected.

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, s U.S. Nuclear Regulatory Commission March 8, 1989 Page Two o Reactor water clean up piping was replaced and baseline inspections performed from the RHR tie-in out to the second isolation valve.  ;

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

o All 20 jet pump hold-down beams were UT examined pei General Electric (GE) Service Information Letter (SIL)-330. Two

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r reportable indications were detected and both jet pump beams were replaced.

o All 36 shroud head hold-down bolts were UT examined per GE 8 SIL-433. No reportable indications were detected.

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 on 10 of 20 jet pump mixing nozzles revealed no ,

significant erosion in the throat area. This visual inspection was performed because during a 1988 examination of the Unit 2 inlet mixers, erosion was detected.

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

Sincerely, lY.

H. G. Hairston, III I

f GKM/eb Enclo;are: Owner's Data report for Inservice Inspection - Edwin I. Hatch Nuclear Plant Unit 1 - September 1988 - December 1988.

c: (See next page.)

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U.S. Nuclear Regulatory Commission March 8, 1989.

Page Three c: Georaia Power Comoany (w/o)

Mr. H. C. Nix, General Manager - llatch Mr. L. T. Gucwa, Manager Engineering and Licensing - Hatch GO-NORMS U.S. Nuclear Reaulatory Commission. Washinaton. D tC1 Mr. L. P. Crocker, Licensing Project Manager - Hatch

'U.S. Nuclear Reaulatory Commission. Reaion II Mr. S. B. Ebneter, Regional Administrator Mr. J. E. Menning, Senior Resident Inspector - Hatch l

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