ML20206J307
| ML20206J307 | |
| Person / Time | |
|---|---|
| Site: | LaSalle  |
| Issue date: | 06/17/1986 |
| From: | Diederich G COMMONWEALTH EDISON CO. |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| NUDOCS 8606270086 | |
| Download: ML20206J307 (1) | |
Text
.
Commonwealth Edison c
LaSalls County Nuclear Station s] Rural Route #1, Box 220 V'
Marseilles, Illinois 61341
^~'j Telephone 815/357-6761 PRIORITY ROUTING June 17, 1986 gp&
y I
k C QT-p urnu vD6S : &
1 Mr. James G. Keppler
-k Regional Administrator A,
J Region III U.S. Nuclear Regulatory Commission 1
799 Roosevelt Road Glen Ellyn, Illinois 60137
Dear Sir,
This Special Report is submitted in accordance with LaSalle Unit 1 Operating License NPF-11, Appendix A, and InSalle Unit 2 Operating License NPF-18, Appendix A, Technical Specifications 3.3.7.9 and 6.6.C.
Due to Unit 1 refuel design modification construction activities, it was necessary to remove the following fire detection zones from service as a conservative precaution to prevent spurious zone fire alarms due to extensive welding and cutting'in the areas.
DETECTION j
ZONE AFFECTED AREA DATE TAKEN 00S 1-2 Aux Building, 786' May 5, 1986 2-2 Aux Building, 786' May 5, 1986 t
1-22P U-1 Rx Building, 710' May 5, 1986 1-17 U-1 Rx Building, 740' May 12, 1986 1-22 U-1 Rx Building, 710' May 12, 1986 1-2h U-1 Rx Building, 820' May 14, 1986 In accordance with the Action Statement of Technice.1 Specification 3.3.T.9, an hourly fire watch patrol was established to inspect the affected areas.
The detectors out of service have exceeded the specified fourteen (14)
-i day criteria prior to requiring a Special Report.
Fire detection zone 1-2h was returned to service on June 12, 1986. Fire detection zones 1-2, 2-2, 1-22P, 1-17, and 1-22 will be returned to service prior to restarting Unit 1 from the first refueling outage.
/f,O. A go' g")3
[G.J.Diederich
- s Station Manager LaSalle County Station GJD/DJR/kg thPb-R o a te File /NRC JUN 9 g g.
'/0 1
gs2g,et S%jp,3 c
O S