ML20215K310
| ML20215K310 | |
| Person / Time | |
|---|---|
| Site: | LaSalle  |
| Issue date: | 10/21/1986 |
| From: | Diederich G COMMONWEALTH EDISON CO. |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| NUDOCS 8610280106 | |
| Download: ML20215K310 (1) | |
Text
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C Comm nwrith Edison c
LaSalle County Nuclear Station m '
Rural Route #1, Box 220 v'
Marseilles, Illinois 61341 x
Telephone 815/357-6761 October 21, 1986 rul0RITY RO' ilreu J
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Mr. James G. Keppler h
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Regional Administrator gss gt DM d.CZ Region III U.S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, Illinois 60137
Dear Mr. Keppler:
This Special Report is being submitted in accordance with Technical Specifications 3.7.7.a and 6.6.c. and the C. V. Schroeder to J. G. Keppler letter dated February 9, 1984, regarding the LaSalle Unit 2 drywell temperature.
On September 26, 1986, with Unit 2 operating at 76 percent power, the Operating Department started the "2B" chiller and then shutdown the "2A" chiller. Temperature sensor 2TE-VP215 stabilized out about 153' F and sensor 2TB-VP205 reached 150' F.
Both sensors are in the vicinity of SRV's F. K S,
I M and SRV's A, H respectively. Since the observed temperature is well below
' the temperature of 170 degrees F for which the remaining qualified life is calculated, no negative impact on equipment operability will occur as a result of this high temperature.
t These temperatures are consistent with those seen in the past as documented in l
Special Reports dated November 18, 1985, and January 8, 1986.
Temperatures will continue to be monitored weekly in accordance with Station Procedures.
i
$.0.
G. J. Diederich Station Manager LaSalle County Station 4
GJD/KCV/kg Enclosure xc: NRC Resident Inspector INPO Records Center U.S. NRC Document Control Desk 4
'l0 8610280106 861021 4
DR ADOCK 0500 00T 2 21986 Esw
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