ML17227A760

NPDES Noncompliance Notification:On 930114,neutralization Basin,Containing 220,000 Gallons of Water,Discharged to Intake Canal at Ph of 10.20 Std Units.Caused by Miscommunication.Procedure Developed to Address Discharge

ML17227A760
Person / Time
Site:	Saint Lucie
Issue date:	03/05/1993
From:	Sager D FLORIDA POWER & LIGHT CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
L-93-16, NUDOCS 9303150014
Download: ML17227A760 (5)

Text

~4.CCELERAT DOCUMENT DIST UTION SYSTEM p REGULAT INFORMATION DISTRIBUTION STEM (RIDS)

I ACCESSION NBR:9303150014 DOC.DATE: 93/03/05 NOTARIZED: NO DOCKET ¹ FACIL:50-335 St. Lucie Plant, Unit 1, Florida Power a Light Co. 05000335 50-389 St. Lucie Plant, Unit 2, Florida Power a Light Co. 05000389 AUTH. NAME AUTHOR AFFILIATION SAGER,D.A. Florida Power a Light Co.

RECIP.NAME RECIPIENT AFFILIATION Document Control Branch (Document Control Desk)

SUBJECT:

NPDES noncompliance notification:on 930114,neutralization basin, containing 220,000 gallons of water, discharged to intake canal at pH of 10.20 std- units. Caused by miscommunication. Procedure developed to address discharge.

DISTRIBUTION CODE: IE23D COPIES RECEIVED:LTR ENCL SIZE:

TITLE: Environmental Event Report (per Tech Specs)

NOTES:

RECIPIENT COPIES RECIPIENT COPIES ID CODE/NAME LTTR ENCL ID CODE/NAME LTTR ENCL PD2-2 LA 3 3 PD2-2 PD 1 1 NORRISiJ 1 1 INTERNAL: ACRS 5 5 NRR/DRSS/PEPB 1 1 NRR/P S ILRB 1 1 OGC/HDS3 1 1 GF ~ 01 1 1 RGN2 1 1 EXTERNAL: NRC PDR 1 1 NSIC 1 1 NOTE TO ALL"RIDS" RECIPIENTS:

PLEASE HELP VS TO REDVCE WASTE! CONTACT TIIE DOCVMEN'f CONTROL D!2K; ROOM Pl-37 (EXT. 504-2065) TO ELIMINATEYOUR NAME Fl<OM DISTRIBUTION LISTS FOR DOCUMEN'I'S YOV DON'T NEED!

TOTAL NUMBER OF COPIES REQUIRED: LTTR 17 ENCL 17

l j

)H

,I j y ~

P.O. Box 128, Ft. Pierce, FL 34954-012$

March 5, 1993 L-93-16 10 CFR 50.36 EPP 3.2.1 U. S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555 Re: St. Lucie Units 1 and 2 Docket Nos. 50-335 and 50-389 Deviation of the NPDES Permit 401 Site Certification On January 14, 1993, the Neutralization Basin, containing 220,000 gallons of water, was discharged to the intake canal at a pH of 10.20 standard units. This exceeded the pH limit in the site NPDES Permit of 6.0 to 9.0 standard units. This deviation is being reported to the Environmental Protection Agency in the monthly Discharge Monitoring Report; a copy of the event is attached and is being sent pursuant to Section 3.2.1 of the St. Lucie Units 1 and 2 Environmental Protection Plan.

Should you have any questions on this information, please contact us ~

Very truly yours, D. A. ager Vice esident St. Lucie Plant DAS:ZJB:kw cc: Stewart'. Ebneter, Regional Administrator, Region Senior Resident Inspector, USNRC, St. Lucie Plant II, USNRC Attachment DAS/PSLP846-93 9303150014 930305 PDR;;ADQCK 8 ~''"" P 'DR05000335 an FPL Group company

/

0 fP.~Ay ~.

+a 0

~

FLORIDA POWER & LIGHT COMPANY - ST. LUCIE PLANT NPDES PERMIT NO. FL0002208 OSN 002 - LOW VOLUMEWASTEWATER MONITORING PERIOD 1/1/93 - 1/31/93 At approximately 8:00 AM on January 14, 1993, the neutralization basin, containing 220,000 gallons of water, was discharged to the intake canal at a pH of 10.20 std. units.

This value exceeded the pH limit of 6.0 to 9.0 std. units set in the plant's NPDES Permit No. FL 0002208. The discharge event occurred for approximately two hours. The event was not discovered to have occurred until approximately 9:00 AM on January 15, 1993.

The neutralization basin had been discharged to the intake canal previously during the week at the proper pH. Thereafter, the typical receiving point of discharges from the neutralization basin, the onsite storm water basins, was requested in order to decrease the time needed for neutralization during a period of increased demand for demineralized water for power plant operation. Due to a miscommunication, the on-shift operator was unaware that the neutralization basin was supposed to be discharged to the storm water basins and inadvertently discharged the water to the intake canal.

For corrective action, a procedure has been developed which requires written authorization for releases for this type. This authorization specifies where the neutralization basin is to be routed for discharge.

Due to the relatively small volume of water discharged from the neutralization basin into the intake canal, which has a mass water flow of approximately 1,000,000 gallons per minute, no detrimental impact to the aquatic environment was observed or is expected.

A219 1