ML20114B441
| ML20114B441 | |
| Person / Time | |
|---|---|
| Site: | Prairie Island  |
| Issue date: | 01/22/1985 |
| From: | Musolf D NORTHERN STATES POWER CO. |
| To: | Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML20114B443 | List: |
| References | |
| NUDOCS 8501290175 | |
| Download: ML20114B441 (1) | |
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/d Northem States Power Company 414 Nicollet Mall Minneapoks. Minnesota $5401 Telephone (612) 330-550o January 22, 1985 Director Office of Nuclear Reactor Regulation U S Nuclear Regulatory Commission Washington, DC 20555 PRAIRIE ISLAND NUCLEAR GENERATING PLANT Docket Nos. 50-282 License Nos. DPR-42 50-306 DPR-60 Unit 1 Inservice Inspection Summary Report Attached for your review are four copies of the report, " Inservice Inspection - Examination Summary, Prairie Island Nuclear Geaerating Plant - Unit 1, September 19, 1984 thru September 22, 1984".
This report summarizes the results of inservice inspection examinations performed to satisfy commitments made to the NRC Staff at a meeting in Bethesda, Maryland on February 8,1983.
Examinations were performed on circumferential pipe welds in portions of the Safety Injection system that were identified as containing stagnant cxygenated borated water, with selection based on those welds that are considered the most susceptible to trans-granular stress corrosion cracking.
The results of the ultrasonic examinations performed during this inspection revealed no relevant indications which might af feet the integrity of the system. However, a small leak was visually noted on the valve sida of a pipe-to-valve veld, in an area where ultrasonic examinations are impractical.
The through wall discontinuity was consequently weld repaired and further visual examinations of similar areas were performed with no evidence of leakage being observed.
DdO David Musolf Manager - Nuclear Support Services DMM/EFE/ dab c
Regional Administrator-III, NRC (2 copies of attachment)
NRR Project Manager, NRC (1 copy of attachment)
Resident Inenecto*, NRC (w/o attachment)
C Charnoff s io attachment) w H Baron, Chief Leiler Ins., State of HN (1 copy of attachment)
S Tack, Ha tfor' Ins. (1 copy of attachment) 0#
Attachment 8501290175 050122 Q g I M'T PDR ADOCK 05000202 O
PDR W
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