ML20064G536
| ML20064G536 | |
| Person / Time | |
|---|---|
| Site: | Cook  |
| Issue date: | 01/03/1983 |
| From: | Will Smith INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| NUDOCS 8301110530 | |
| Download: ML20064G536 (1) | |
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INDIANA & MICHIGAN ELECTRIC COMPANY DONALD C. COOK NUCLEAR PLANT P.O. Box 458, Bridgman, Michigan 49106 (616) 465-5901 January 3, 1983 Mr. J. G. Keppler, Regional Director Office of Inspection and Enforcement United States Nuclear Regulatory Commission Region III 799 Roosevelt Road Operating License DPR-74 Glen Ellyn, Illinois 60137 Docket No. 50-316
Dear Mr. Keppler:
This is to confirm our verbal report to Mr. N. Dubry, NRC Region III Inspector, on December 30, 1982, at approximately 1600 hours0.0185 days <br />0.444 hours <br />0.00265 weeks <br />6.088e-4 months <br />, at which time we informed Mr. Dubry of the location and nature of an obstruction in Unit #2 valve SI-152-S, which prevented attainment of the minimum required flow through the south safety injection header. The presence of a flow obstruction was indicated on December 23, 1982, at which time performance testing showed a maximum attainable flow of 260 gpm (vs.
required flow of 300 gpm, minimum) through the flow path containing valve SI-152-S. Systematic investigation since that date resulted in discovery of the obstruction (the unattached disc from a previous repair of valve SI-152-S) lodged within the valve body.
An investigation into the cause of this event has been initiated. A complete report will be submitted in fourteen (14) days.
Subsequent to the above December 30, 1982 report, the obstruction was removed from valve SI-152-S and the correct SI flow rate was established with no further difficulties.
Sincerely, LO$
W. G. Smith, JM-Plant Manager WGS:frb cc: J. E. Dolan R. S. Hunter M. P. Alexich R. W. Jurgensen f"5 R. F. Kroeger K. J. Vehstedt 78 E. Swanson/N. Dubry Om R. C. Callen MPSC 88 J. M. Hennigan ygg R. O. Bruggee EPRI PNSRC g*-u G. Charnoff, Esq.
J. F. Stietzel JAN 5 1983 E. L. Townley Dir., IE (30 copies)
Dir., MIPC (3 copies) nst?