ML20135F843
| ML20135F843 | |
| Person / Time | |
|---|---|
| Site: | Byron, 05004548  |
| Issue date: | 09/03/1985 |
| From: | Querio R COMMONWEALTH EDISON CO. |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| BYRON-85-1211, NUDOCS 8509170440 | |
| Download: ML20135F843 (1) | |
Text
r Commonwealth ECson h
[N i Byron NucinrSt:ti:n
( _ ) 4450 North GIrmin Church Road Byron, Illinois 61010 September 3,1985 LTR:
BYRON 85-1211 FILE:
2.7.400 Mr. James G. Keppler Regional Administrator Region III U.S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, IL 60137
Dear Sir:
This report is being submitted pursuant to Byron Technical Specification 3.3.3.4 to document the inoperability of three meteorologicalinstrumentation channels l
listed in Table 3.3-8 for a period exceeding the allowed 7 days.
At 0030 on 8-13-85 the 30' and 250' Wind Direction recorders and the 30' Air Temperature recorder in the main Control Room were reported inoperable. These recorders were not reported back in service until 1900 on 8-20-85. The cause of the malfunction was damaged fuses in the communication line between the meteorological tower and the Control Room. These fuses were damaged by a severe lightning storm.
The damaged fuses were replaced and the recorders were recalibrated prior to declaring the instrumentation operable.
It should be noted that instrumentation at the tower was never inoperable; only the Control Room instrumentation was affected by the damaged communication link.
This report was prepared by J. Cook from information supplied by Brent Scott.
N c6LS 2
v R.E. Querio Station Superintendent Byron Nuclear Power Station REQ /JC/gt cc:
J. Ilinds, NRC Res. Insp.
US NRC Doc. Control Desk, Washington, D.C.
INPC Record Center CECO Distribution List
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e50917044o 85o903
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i SEP 111985