ML20198K924
| ML20198K924 | |
| Person / Time | |
|---|---|
| Site: | Fermi  |
| Issue date: | 05/30/1986 |
| From: | Agosti F DETROIT EDISON CO. |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| IEB-86-001, IEB-86-1, VP-86-0060, VP-86-60, NUDOCS 8606040163 | |
| Download: ML20198K924 (3) | |
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..,e Edison 55E9FN t=a May 30, 1986 VP-86-0060 Mr. James G. Keppler Regional Administrator Region III U.
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Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, Illinois 60137
Dear Mr. Keppler:
Reference:
1)
Fermi 2 URC Docket No. 50-341 URC License No. NPF-43 2)
URC to Detroit Edison IE Bulletin No. 86-01, " Minimum Flow Logic Problems That Could Disable RHR Pumps", dated May 23, 1986 3)
NRC to Detroit Edison IE Information Notice No. 85-94, " Potential for Loss of Minimum Flow Paths Leading to ECCS Pump Damage During a LOCA", dated December 13, 1985
Subject:
Fermi 2 Response to IE nulletin No. 86-01 We have carefully reviewed IE Bulletin No. 86-01 and determined that the problem described therein does not exist at Fermi 2.
The problem is described as a design that closes both RHR minimum flow valves on a high flow signal from either flou loop, creating a single failure capable of disabling all four RHR pumps.
At Fermi 2 each minimum flow valve is closed by a high flow signal j
from its own flow loop.
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!!r. Jar.es G. ICeppler May 30, 1986 VP-86-0060 Page 2 If you have any questionc concerning this matter, please contact !!r. R. L. Iloolley at (313) 586-4211.
Sincerely, i
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fir. M. D. Lynch tir. 17. G.
Rogers
!!r. J. fl. Taylor, Director Office of Inspection and Enforcecent USURC Document Control Deck 11ashington, D.C.
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fir. James G. Keppler May 30, 1986 VP-86-0060 Page 3 I,
FRANK E. AGOSTI, do hereby affirm that the foregoing statements are based on fccts and circumstances which are true and accurate to the best of my knowledge and belief.
E PRA!!K E.
AGOSTI Vice President Muclear Operations On this 88 day of T
- 1986, before me personally appeared Frank d. Agosti, being first duly sworn and says that he executed the foregoing as his free act and deed.
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