NRC-89-0017, Discusses Moisture Separator Reheater Debris Sampling. Reactor Coolant Sample Results Since mid-Jul 1988 Indicated No Evidence of Stainless Steel Strands.Requests Concurrence to Halt Microscopic Insp of Reactor Coolant Filter Solids
| ML20235H037 | |
| Person / Time | |
|---|---|
| Site: | Fermi  |
| Issue date: | 02/15/1989 |
| From: | Orser W DETROIT EDISON CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| CON-NRC-89-0017, CON-NRC-89-17 CAL-RIII-88-09, CAL-RIII-88-9, NUDOCS 8902230448 | |
| Download: ML20235H037 (2) | |
Text
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Yfulicm S. Orser Vice President -
' p Nucitar Operabons a/O Fermi 2 6400 North Dexte Highway Nue! ear -
Ed* On Newport, Michigan 48166 i
Operatioris (313)586-5300 February 15, 1989 NRC-89-0017 U.
S.
Nuclear Regulatory Commission Attention:
Document Control Desk Washington, D.
C.
20555
Reference:
(1)
Fermi 2 NRC Docket No. 50-341 NRC License No. NPF-43 (2)
Confirmatory Action Letter, CAL-RIII-88-009, dated April 19, 1988
Subject:
Moisture Separator Reheater Debris Sampling Reference 2 documents a conversation between E.
G.
Greenman of the U.
S.
NRC Region III, and myself concerning problems that occurred at Fermi 2 on, and before, April 9, 1988 and the corrective actions implemented to correct or investigates these problems.
Reference 2 requires, among other things, that we obtain a weekly sample of reactor coolant and analyze it microscopically for the presence of stainless steel wool and chemically for iron, nickel and chromium.
This sampling progr.
as instituted as the result of damage to our Moisture
-Separator Reheaters (MSRs)-and the possible subsequent " carry over" of very small pieces of MSR stainless steel wool through the Reactor Feed Pump suction strainer and into the reactor coolant rs' tem.
Repair of the MSRs and re-initiation of the Reactor Water Cleanup System removed the input and any inventory of the steel wool in the reactor coolant system.
Reactor coolant sample results since mid-July 1988 have indicated no evidence of stainless steel strands.
Therefore, we are requesting your concurrence to halt the microscopic inspection of the reactor coolant filterable solids for stainless steel.
Weekly reactor coolant chemical analysis for iron, nickel and chromium will continue as this is a normally scheduled routine.
Chemical analysis is a more useful analytical tool than microscopic inspection because it is a more accurate identification of any material collected on a filter paper.
Deleting the microscopic inspection of the reactor coolant from the analysis program
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Nuclear Regulatory Commission February 10, 1989 NRC-89-0017
.Page 2 will also reduce the radiation exposure to chemistry technicians.
We will continue the weekly microscopic inspection until we receive notification of your concurrence with our request.
If your have any questions, please contact Gordon Nader at (313) 586-4513.
Sincerely, cc:
A.
B.
Davis R.
C.
Knop W.
G.
Rogers J.
F.
Stang Region III i
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