ML20091G408
| ML20091G408 | |
| Person / Time | |
|---|---|
| Site: | Hatch  |
| Issue date: | 05/29/1984 |
| From: | Nix H GEORGIA POWER CO. |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| GM-84-435, NUDOCS 8406040264 | |
| Download: ML20091G408 (2) | |
Text
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0-Georgia Power Company.
Post Office B;x 439 Bexley, Georgi) 31513 Telephone 912 367-7781 912 537-9444 GeorgiaPbwer
- Edwin 1. Hatch Nuclear Plant May 29, 1984 GM-84-435 PLANT E.
I.
HATCH Special Report Docket No.
50-321 United States Nuclear Regulatory Commission Office of Inspection and Enforcement Region II Suite 3100 101 Marietta Street Atlanta, Georgia 30303 ATTENTION:
Mr. James P. O'Reilly Attached is Special Report No.
50-321/1984-005.
This report is required by Hatch Unit 1 Technical Specifications Section 3.13.2, ACTION b.1 and Hatch Unit 2 Technical Specifications section 3.7.6.1, ACTION b.2.c.
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( H.
C.
N'i x General Manager HCN/TLE/ ult xc:
R. J.
Kelly R.
E.
Conway J. T.
Beckham, Jr.
'P.
D.
Rice K. M. Gillespie S.
B. Tipps R. D.
Baker Control Room Document Control-
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0 SPECIAL. REPORT 50-321/1984-005
-LICENSEE GEORGIA POWER COMPANY
. FACILITY NAME :
EDWIN I.
HATCH
' DOCKET NUMBER :
50-321
- DESCRIPTION OF EVENT:
On May 15, -
- 1984, at approximately 1615
- CDT, with Unit 1
in steady-state operation at 2431 MWT (approximately 100% power) and Unit 2 in a recirculation pipe replacement outage,. the level in both fire water storage tanks dropped to approximately 240,000 gallons each.
During performance of the " DELUGE / SPRINKLER SYSTEM SURVEILLANCE SAFETY RELATED AREAS" procedure (HNP-3357), the electric fire ' pump and two diesel fire pumps automatically started.
At approximately this time, the fire main header between Unit 1 cooling towers numbers 2 and 3 ruptured.
- Thus, the 270,000 gallons requirement of Unit 1
Tech.
Specs, section 3.13.2.b and Unit'2 Tech. Specs. section 3.7.6.1.b was exceeded before the fire main header rupture could be located and isolated.
The cause of the fire main header piping' rupture was a 22 degree elbow installed improperly.
An investigation revealed that this 22 degree elbow was not installed as design drawing indicated.
This ruptured 22 degree elbow is being replaced and installed per design. drawing.
Also, all other 22 degree elbows in the ' fire main header piping 'are being checked to ensure proper ' installation per. design drawing-Any 22 degree elbows found installed incorrectly will be corrected.
- Also, personnel remained in the fire ' pump house when ' pumps were shut: down prior to isolating the rupture.
The remainder of the Fire Protection system performed as required.
The limiting condition for operation was in effect'for 2.5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> when both fire water tank levels exceeded 270,000 gallons.
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