ML20137C809
| ML20137C809 | |
| Person / Time | |
|---|---|
| Site: | Hatch  |
| Issue date: | 01/10/1986 |
| From: | Gucwa L GEORGIA POWER CO. |
| To: | NRC OFFICE OF ADMINISTRATION (ADM) |
| References | |
| 0242C, 242C, 50-321-1985-006, 50-321-1985-6, 50-32111985-6, SL-194, NUDOCS 8601160421 | |
| Download: ML20137C809 (2) | |
Text
JAN 10 'G6 17:00 007 GPC HUC OPS P.01 7+'^C)
Georgia Pcwor Cor pa6y 333 P earnefat Avenue Avarta. Georgia 30306 1
s Totecnone 404 526-6526 Me 1+g Address-Post Off'ce Bcx 4545 t
A!In,ta. Georg a 30302 GeorgiaPower
'A L. T. Cuawa tne soutrten e ectric s $ rem r
M46eger Nuc ear Eagineer ng and Ch et Nsclear Eng r eer SL-194 0242C January 10,1986 U. S. Nuclear Regulatory Commission Document Control Desk Washington, D. C.
20555 Attached is Special Report No.
50-321/1985-006.
This event meets the reporting requirements of Unit 1 Technical Specification 3.13.2.b and Unit 2 Technical Specification 3.7.6.1.b.
Very truly yours, f f dGL u L. T. Gucwa CBS/lc Attachment c:
Mr. J. T. Beckham, Jr.
Mr. H. C. Nix, Jr.
NRC-Region II GO-NORMS 8601160421 860110 ADOCK050g1 DR S
1 \\
JAN 10 '06 17:00 007 GPC HUC OPS P.02
].?
ar Special Report 50-321/1985-006 LIGNSEE GEORGIA POWER (EMPANY FACILITl NhME : EDWIN I. HA'IQI DCCIG,T NUMBER : 50/321-1985-006 On December 31, 1985, at approximately 1618 GT, with Unit 1 in Refbeling and Unit 2 increasing power at approximately 2040 mt (approximately 84% rated power), the fire deluge valves activated on the north and of the "lB" cooling tower &le to ecuignent failures.
This caused a low water pressire on the fire water system which matomatically started one diesel fire pamp; the electric fire punp was running prior to the event.
At approximately 1632 GT, before the activated deluge valves cculd be isolated, the fire protection water storage tanks' volumes dropped to less than 270,000 gallons each.
Therefore, the recnirements of Unit 1 Technical Specifications Section 3.13.2.b and Unit 2 'Itchnical Specifications Section 3.7.6.1.b were exceeded before the activated deluge valves coald be isolated.
Both fire protection water storage tanks were returned to within the Technical Specifications limits of greater than 270,000 gallons within approximately 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br />.
'Ihis occurred after a determination had been made that no fire was in progress and the s.tbject deluge valves had been isolated.
An investigation condlcted by maintenance personnel determined that the "lB" cooling tower north end air conpressor, which alpplies the air aspply to the fire alppression valves, bad failed.
Then, as the air mapply pressare decreased, the sabject deluge valves activated as designed.
Plant personnel replaced the failed air congressor and the connecting air line from the air conpressor's discharge port to the air conpressor's receiver tank.
The isolated deluge valves and the replaced air congressor were returned to service on Jaruary 6,1986.
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