05000251/LER-1979-014-01, /01T-0:on 790828,during Performance of Evaluation to Place Spent Fuel Pit Purification Demineralizer in Svc, 3,000 Gallon Overflow Occurred.Caused by Incomplete Communication & Failure to Follow Procedure.Unit Cleaned

/01T-0:on 790828,during Performance of Evaluation to Place Spent Fuel Pit Purification Demineralizer in Svc, 3,000 Gallon Overflow Occurred.Caused by Incomplete Communication & Failure to Follow Procedure.Unit Cleaned

ML17338B150
Person / Time
Site:	Turkey Point
Issue date:	09/11/1979
From:	James D FLORIDA POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML17338B149	List: 05000251/LER-1979-014, Forwards LER 79-014/01T-0 05000251/LER-1979-014-01, /01T-0:on 790828,during Performance of Evaluation to Place Spent Fuel Pit Purification Demineralizer in Svc, 3,000 Gallon Overflow Occurred.Caused by Incomplete Communication & Failure to Follow Procedure.Unit Cleaned
References
LER-79-014-01T, LER-79-14-1T, NUDOCS 7910090353
Download: ML17338B150 (4)

LER-1979-014, /01T-0:on 790828,during Performance of Evaluation to Place Spent Fuel Pit Purification Demineralizer in Svc, 3,000 Gallon Overflow Occurred.Caused by Incomplete Communication & Failure to Follow Procedure.Unit Cleaned

Event date:
Report date:
2511979014R01 - NRC Website

text

NRC FORM 388 (7.77)

LICENSEE. EV.FIXITREPORT U. S. NUCI.EAR AEQUI.'ATORYCOPrIMISSIOi4

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4 15 RKPQAY OA 8 JSQ EVENT DESCRIPTION ANO PRQBASI CONSECUENCES Go During power o eration',

an evolution was ezfozmed to lace the s ent fu pit '(SFP).purification deminezalizer in service.

incomplete communication and. failure to fo~ow a procedure resul.ted in an unanticipated. flow ath from the. refueling water storage tanR (RMST) to the SFP.

Appzo2tt.matel Q

8 8,000 gal. of watex were transferred..

This resulted. in a reduction of the 7 'EST vo1ume to,be 1ow that zequired. by te chnica1 specifications and in an overflow of'bout 3,000 ga1.

fzom the SFP.,

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o Upon discovery,,

a unit shutdown was initiated. -and.

uzsued. until the re uired RUST volume was reestablished..

The spill was confined to..the immediate ~rea P

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'2 adjacent to the SFP.and.

a~ system.

Control and. cleanup of'he contaad.nated area was promptly initiated.

Long term corrective action items I

are discussed. in the attachment.

7 8'9 FACILITY ST*iUS

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REPORTABr,E OCCURRENCE 251-7 LICENSEE EVKfT REPORT PAGE

'BLO'dditional Event, Descxi tion and, Probable Conse uences:

,P During power operation, an evolution was performed.'o. place the Unit No. 0 spent.

. fuel pi't (SFP) purification.demineralizer in service.

Because of'.incomplete communication and. faQ.ure to, follow,a pxocedure, 'it was not recognized, that this shazed. deminexalizer was already in, service in the refueling water. storage tank (EST) puxification mode..

Consequently, when the correct va1ve alignment was made to establish the spent, fuel -pit.puxification flow path, an unanticipated flow.path was inadveztently'zovvided which allowed. the refueling, water purification pump to transfer.,water fxom, the refueling water storage tarik to the spent fuel p'it.. Prior to discovexy and, coxxection of this improper configuration, approximately 8,000 gallons of water weze transferred..

This. resulted. in (1) a reduction of the. volume in the refueling, water storage tank to appxoxi.mately 317,000 gallons (TS minimum: 320,000'allons) and. (2) overflow of about 3,000 gallons;, fxom the spent fuel pit,.

J Additiona1 Cause Descxi tion and. Corrective Actions:

Upon.discovery of this occurrence, a Unit No. 4 shutdown was initiated and pursued. for 45-minutes until the, required volume was zeestablished.

in the zefueling water storage tank.

This was; accomplished.

by tzmsfexxing water from the spent fuel pit to the refueling water storage tank.

Water spilled as a result'f the ovexflow was confined to the immediate area adjacent to the. spent fuel pit and.'

drain sys'em within. the pxotected area.

The total activity of the spill was calculated. to be 1.091.curies.

(This activity is based on spent fuel pit sample. data.)

Control and; cleanup of the contaminated.

area.

was promptly initiated.

Management actions have been scheduled..and. initiated. to pxovide a high degree of assurance that an event of this nature will not zeoccur.

These actions, are detailed, in Mr. J.

P. O'Reilly's. facsimile tzansmissions regaxdf.ng."Confirmation of Action".

Refezence RII:JPO, -'50-'251, dated

'August 31, 1979 and. September 5, 1979.

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