ML20236A118
| ML20236A118 | |
| Person / Time | |
|---|---|
| Site: | Hatch  |
| 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) | |
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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.
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o All 20 jet pump hold-down beams were UT examined pei General Electric (GE)
Service Information Letter (SIL)-330.
Two r
reportable indications were detected and both jet pump beams were replaced.
8 o All 36 shroud head hold-down bolts were UT examined per GE 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, f
lY.
I H. G. Hairston, III 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.)
.1-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 C1 t
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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