ML20113A779
| ML20113A779 | |
| Person / Time | |
|---|---|
| Site: | North Anna  |
| Issue date: | 03/28/1985 |
| From: | Taylor J VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.) |
| To: | Kregloe W VIRGINIA, COMMONWEALTH OF |
| References | |
| NUDOCS 8504100696 | |
| Download: ML20113A779 (2) | |
Text
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Q VIRGINI A ELECTRIC AND POWER COMP ANY, RICHMONO, VIRGINI A 23261 March 28, 1985 CERTIFIED MAIL RETURN RECEIPT REQUESTED Mr. W. L. Kregloe State Water Control Board Valley Regional Office 116 North Main Street P. O. Box 268 Bridgewater, Virginia 22812 North Anna Power Station - Oil Spill
Dear Mr. Kregloe:
This confirms the oil spill at our North Anna Power Station that was reported by telephone on March 24, 1985.
On the morning of March 24, 1985, a small amount of lubricating oil was found to have been discharged into the station's cooling water discharge canal.
The amount of oil that entered the canal could not be precisely quantified but was estimated to be no more than ten gallons. The oil in the canal was contained by a permanently instal-led boom across the canal.
No oil was observed downstream of this boom.
Following discovery of the spill, station personnel used absorbent pads and removed the oil.
The spill was caused by an unusually large flow through the station's oil separator which temporarily exceeded the capacity of the treatment system.
A temporary power loss to several Unit 2 systems caused water in these systems to be discharged or " dumped" into the Unit 2 basement sumps. The sump pumps were also affected by this power loss such that water collected in the basement of the Unit 2 turbine building. To remove this water and prevent possible damage to certain equipment, power was restored to the pumps and the water was quickly pumped through the oil separator and into the canal. The rapid passage of this large volume of water through the oil separator resulted in an oil spill. The response by station personnel to rapidly pump the accumulated water to the oil separator was an appropriate and necessary action in light of the existing operating condition.
In light of this incident, station operating personnel have been made aware that the treatment capability of the oil separator can be overcom'e by large inflows of water.
Consequently, while we are continuing to assess this incident to improve upon our oil spill prevention capability, no further corrective action has been taken or is planned at this time due to the unusual nature of the incident.
Io
- ~
"
- If.you have any questions regarding this spill, please do not hesitate 1
to contact Ms. G. R. Knauer (804) 775-5193 or Mr. R. J. Williams (804) 775-5194 i
- of 'my staff. _
t' j
Very trul
- curs, I
John A. Taylor, Ph.d.
Manager Water Quality
-cc: Dr. J. Nelson Grace, USNRC iMr. Harold R. Denton, USNRC
-Mr. Milton D. Shymlock, USNRC Docket No. 50-338/50-339 b
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