ML20126L646
| ML20126L646 | |
| Person / Time | |
|---|---|
| Site: | Calvert Cliffs  |
| Issue date: | 04/24/1981 |
| From: | Russell L BALTIMORE GAS & ELECTRIC CO. |
| To: | Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| RO-81-28-U-1, NUDOCS 8106050135 | |
| Download: ML20126L646 (2) | |
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April 24,1981 Mr. Boyce H. Grier. Director Docket No. 50-317 Office of Inspection & Enforcement License No. DPR-5)
U. 5. Nuclear Regulatory Commission Region 1 631 Park Avenue King of Prussia, Pennsylvania 19406 SUB3ECT: Docket No. 50-317: LER 81-28 (U-1)
Dear Mr. Grler:
This is to confirm our verbal notification to your Mr. Ralph Architzel of a violation of Environmental Technical Specification 2.2.1 (Dissolved Lolids and pH) f ollowing an unmonitored discharge of #ll Waste Neutralizing Tank (WNT).
At 1650 on 4-23-81, the outside operator discovered the drain valve for #11 WNT open.
The operator immediately shut the valve to terminate the discharge. The WNT was placed in service at 1420 to receive make-up regeneration waste. At approximately 1530 the water treatment speciallat started re6enerating #12 makeup traln. Between 1545 and 1645 approximately 75 gallons of 97% H 30, which was diluted to 6% with a 27 Apm y
4 dilution flow, was discharged to the WNT. Starting at 1630,50% NAOH, which was diluted to 5% with a 21 gpm dilution flow, was being discharged to the WNT when the open drain valve was discovered. It was determined the 50 gallons of 50% NAOH was disefarged.
Since the WNT drain valve was not shut. all regenerative waste sent to #11 WNT from 1545 and 1650 were discharged to the Chesapeake fiay, af ter being diluted with 1.2 million gpm circulating water flow, without ensuring that the renneration waste was in I
compliance with the Environmental Technical Specificat.on limits.
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) complete description as to the cause of the unmonitored discharge and a <fescription of The corrective netton will he continued in tfe follow-up report.
' cry truly yours, N
B. Russell 6fant Superintendent
.BR SMDemmr n L. B. Ruttelt
- 3. A. Tierran R. M. Douglass Director. Of flee of Managernent infortnation and Program Control R. E. Archlt:el j
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