ML20236K911
| ML20236K911 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 08/03/1987 |
| From: | Danni Smith PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| To: | Russell W NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM), NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| NUDOCS 8708100045 | |
| Download: ML20236K911 (2) | |
Text
_ _ _ _ _ _ _ _ _ _ _ _ _ _.
)
e PHILADELPHIA A ELECTRIC COM PANY PE ACH BOTTOM ATOMIC POWER ST ATION R. D.1. BOX 208 DELT A. PENNSYLV ANI A 17314 August 3, 1987 W. T. Russell, Administrator United States Nuclear Regulatory Commission Region 1 ATTN: Document Control Desk Washington, D.C.
20555
SUBJECT:
REPORTABLE OCCURRENCE - Prompt Notification
Dear Mr. Russell:
Confirming L.
F.
Vernacchio's telephone conversation with Mr.
- Joliffe, duty officer, Region 1,
United States Nuclear Regulatory Commission on 7/31/87.
Reference:
Docket No. 5-277/278 Peach Bottom Units 2 and 3 Technical Specification 3.14.A.3 Identification of Occurrence:
At 10:08 AM on July 31, 1987 the motor driven fire pump automatically started on decreasing header pressure at 140 psig.
Investigation revealed an underground coupling leak directly behind the radwaste building where personnel were excavating for the foundation for the new radwaste building.
The affected portion of the fire header was isolated but leakage past the isolation valves prevented repair work to start.
Consultation between the Operations Engineer and the Shift Superintendent resulted in the decision to remove both fire pumps from service to effectively isolate the leak in order to expedite repairs.
The Technical Specifications require that if both fire pumps are inoperable, the NRC must be no t i fied by telephone and in writing.
Conditions Prior to Occurrence:
Unit 2 cold shutdnwn Unit 3 cold shutdown Apparent Cause of Occurrence:
The occurrence was caused by personnel digging in the yard directly behind the radwaste building.
The personnel were working on the founda tion for the new radwaste building.
They had dug a 4'
x 4' hole approximately 3 feet deep to look for the fire header.
While digging with a hand shovel a clamp used to repair a leak that had occurred in the past was bumped, breaking the seal.
rf G708100045 G70803 PDR ADOCK C5000277 yg S
PDR l
l
.f l
l l
Corrective Action:
Before the fire pumps were removed from service, the affected portion of the fire header was isolated for repair of the leak.
Extra lengths of fire hose were taken to the hosereel stations adjacent to the isolated portion of the fire header.
Repair of the broken header was completed at 8:00 PM.
The motor driven fire pump and the diesel driven fire pump were returned to service at 10:45 PM.
Previous Occurrence:
l On June 29, 1984, both fire pumps were inoperable due to a fire header break in the turbine building.
I Very truly yours,
/1, j
~W 9,->e.g d Z >
D. M. Smith j
j gf Manager l
l DMS/CDBibac cc:
T. P. Johnson, NRC Resident inspector Addressee 1
l i