ML20085F408
| ML20085F408 | |
| Person / Time | |
|---|---|
| Site: | Palisades  |
| Issue date: | 04/04/1975 |
| From: | De Witt R CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.) |
| To: | NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| Shared Package | |
| ML20085F406 | List: |
| References | |
| AO-75-6, NUDOCS 8308220081 | |
| Download: ML20085F408 (3) | |
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a T0-NRC REGION 111 799 ROSSEVELT RD GLEN ELLYN, IL SUBJECT-ABNORMAL OCCURRENCE 75-6 VERIFICATISH OF PHONE CONVERSATION WITH MR GASTON FIORELLI ON 4/4/75 AT 1415.
REPORTED BY R S DE WITT.
REPORT NO 75-6 SF-1201 (R5-69)
REPORT DATE - APRIL 4, 1975 SCCURRENCE DATE - APRIL 4,1975 COPY SENT T0: PDR / /
FACILITY - PALISADES PLANT fv 2 rf Lroaf NSIC~
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88 no 68 PLANT DISCHAME EFFLUENT HEAT RATE GREATER THAN 0.5 BILLION BTU /HR.
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@8 DESCRIPTION OF GCCURRENCE-g<
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1975 THE PLANT WAS DISCHAMING HEAT AT THE RATE OF 1 14 BILLION
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- Telegram N#L4E.E 11125 tem Union BTU /HR OUT THE MIXING BASIN SUTFALL.
THE TECHNICAL SPECIFICATION LIMIT IS 0.5 BILLION BTU /HR.
AT 1130 ON APRIL 4, 1975 THE DILUTION WATER BEING DIVERTED THRU THE UNUSED HALF - WEST WATERBOX - 0F THE CONDENSER WAS STOPPED.
THE HEAT RATE IN THE PLANT MIXING BASIN OUT--
FALL WAS REDUCED TO 0.42 BILLIGN STU/HR.
ANALYSIS OF OCCURRENCE -
FROM APRIL 3 To APRIL 4,1975 DILUTION WATER WAS BEING DIVERIED THRU THE UNUSED SIDE OF THE CONDENSER TO AID IN OBTAINING ENOUGH VACUUM FOR STARTUP.
LATE ON APRIL 3RD THE CAUSE OF LOW VACUUM WAS FOUND AND CORRECTED.
THE SOUTH C00 LING TOWER HAD BEEN PLACED IN SERVICE.
PLANT OPERATING. PERSONNEL WERE NOT AWARE OF THE DIFFERENCE IN TEMPERATURE BETWEEN THE INLET LAKE WATER AND THE MIXING BASIN OUTFALL SF.1201 (h5-tW)
THE RADIOLOGICAL MATERIALS OSNTROL GROUP NOTICED THE DIFFERENCE IN TEMPERATURE BETWEEN THE LAKE INFLUENT AND PLANT EFFLUENT AND CALCU-LATED THE DISCHARGE HEAT RATE BASED ON 6000 GALLONS PER MINUTE TO BE 1 14 BILLION BTU /HR.
CORRECTIVE ACTISN -
ON APRIL 4 AT 1130 THE DILUTION WATER BEING DIVERTED THERE THE UNUSED SI D'd 0F THE CONDENSER WAS STOPPED.
ALL AVAILABLE FANS ON THE COOLING TOWER IN SERVICE WERE TURNED ON.
DY APPR0XIMATELY 130s ON APRIL 4 THE MIXING BASIN EFFLUENT DISCHARGE HEAT RATE WAS REDUCED TO 0.42 I
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i PREVIOUS SCCURRENCES - NONE.
i R B DE WITT PALISADES PLANT CONSUMERS POWER COMPANY CBW To-NRC REGION til 799 ROOSEVELT RB
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GLEN ELLYN, ILL
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