ML17223B211

Special Rept:On 910513,determined That Plant Criteria for Fishkill Had Been Met.Cause of Mortality Is Insufficient Food Supply.Fish Removed & Disposed of on Site & Velocity Caps Rebuilt

ML17223B211
Person / Time
Site:	Saint Lucie
Issue date:	06/06/1991
From:	Sager D FLORIDA POWER & LIGHT CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
L-91-158, NUDOCS 9106170257
Download: ML17223B211 (4)

Text

ACCELERATED DIS UTION DEMONSHRATION SYSTEM REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)

ACCESSION NBR:9106170257 DOC.DATE: 91/06/06 NOTARIZED: NO DOCKET FACIL:50-389 St. Lucie Plant, Unit 2, Florida Power & Light Co. 05000389 AUTH. NAME AUTHOR AFFILIATION SAGER,D.E. Florida Power & Light Co.

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

SUBJECT:

Special rept:on 910513,determined that plant criteria for fxshkill had been met.Caused by mortality insufficient food supply. Dead fish removed &'dispose of on site & velocity caps rebuilt.

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 NORRIS,J 1 1 INTERNAL ACRS 5 5 NRR/DREP/PEPB9 D 1 1 1 1 OGC/HDS3 1 1

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1 RGN2 1 1 EXTERNAL: NRC PDR 1 1 NSIC 1 1 D

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NOTE TO ALL "RIDS" RECIPIENTS:

PLEASE HELP US TO REDUCE WASrE! CONTACT THE DOCUMENT CONTROL DESK, ROOM Pl-37 (EXT. 20079) TO ELIMINATEYOUR NAME FROM DISTRIBUTION LISfS FOR DOCUMENTS YOU DON'T NEEDl TOTAL NUMBER OF COPIES REQUIRED: LTTR 18 ENCL 18

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P.O. Box.l, Ft. Pierce, FL 34954-0120 P-PL JUN 06 1991 L-91-158 10 CFR 50.36(b)

U. S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, D. C. 20555 Gentlemen:

Re: St. Lucie Unit 2 Docket No. 50-389 Environmental Protection Plan Report Date of Event: May 13, 1991 Unusual or Im ortant Environmental Event The attached Report is being submitted pursuant to the requirements of Section 4.1 of the St. Lucie Unit 2 Environmental Protection Plan to provide a description of a reportable fish kill at, the St.

Lucie Plant.

Very truly yours, D. A ager Vic esident St. ucze Plant DAS.GRM kw Attachment cc: Stewart D. Ebneter, Regional Administrator, USNRC Region II Senior Resident Inspector, USNRC, St. Lucie Plant DAS/PSL N443

~~O6>70257 v~0l 06 PDR ADOCK 0500038@ I 8 PDR

~ n r, m pp FPL Group company o

DESCRIPTION OF A FISHKILL EVENT AT THE ST. LUCIE POWER PLANT The following are sequential responses for information required by the Plant's Environmental Protection Plans:

A. Crevelle jack in the St. Lucie Power Plant intake canal are dying. Mortality was first observed May 3, 1991. On May 13, 1991, it was determined that the FPL criteria for a fishkill had been met. By May 21, 1991, approximately 100 dead fish had been found on intake canal berms and on barrier nets in the canal. By May 30, 1990, approximately 1,000 dead fish had been recovered. Crevelle jacks are the only species affected. Plant operations have been normal with no unusual or causative conditions noted.

B. Probable cause of mortality is insufficient food supply. Based on an examination of dead fish the following support a starvation hypothesis: empty stomachs, thinness of the fish and gonad size reduction. The jacks have eaten all the bait fish in the canal and will strike any bright object in the canal.

C. Corrective action has been to remove the dead fish and dispose of them on site. Observations on the fauna in the canal are on-going to help understand this event.

D. Corrective action is underway and involves rebuilding the velocity caps. When the repair is complete, entrapment of jacks may be reduced.

E. The Nuclear Regulatory Commission, via Jan Norris, St. Lucie Plant Project Manager, was notified of the event on May 15, 1991. FPL's determination of reportability was made by FPL biological specialists in the Company's Environmental Affairs Department through a systematic evaluation of the event.