ML20085F506
| ML20085F506 | |
| Person / Time | |
|---|---|
| Site: | Palisades  |
| Issue date: | 01/26/1975 |
| From: | De Witt R CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.) |
| To: | |
| Shared Package | |
| ML20085F507 | List: |
| References | |
| AO-75-3, NUDOCS 8308220156 | |
| Download: ML20085F506 (4) | |
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1 CONFIRMATION OF TELEPHONE CONVERSATION WITH K BAKER ON 1/26/75 AT 1600.
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SUBJECT-ABNORMAL OCCURRENCE 75-3 FILE ABNORMAL OCCURRENCE 75-3 j
REPORT NO. 75 - 3 l
REPORT DATE JANUARY 26, 19 75 geag6 gg S
PDR OCCURRENCE DATE - JANUARY 22, 19 75
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j FACILITY - PALISADES PLANT IDENTIFICATION OF OCCURRENCE-COMPONENT COOLING WATER LEAK TO THE SERVICE WATER HEADER l
DESCRIPT ION OF OCCURRENCE-ON JANUARY 21, 19 75 IT WAS SUSPECTED THAT
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A LEAK HAD DEVELOPED IN ONE OF THE COMPONENT COOLING WATER - CCW -
l HEAT EXCHANGERS.
ON JANUARY 22 AT 0100 THE "A" COMPONENT COOLING WATER HEAT EXCHANGER WAS ISOLATED.
THIS ACTION APPEARED TO HAVE STOPPED T HE LEAK.
ON JANUARY 23 AT 0300 THE "A" CCW HEAT EXCHANGER WAS a
t PLACED IN SERVICE TO DETERMINE THE SEVERITY.
AT 0915 THE LEAK RATE WAS a
l sr.ixi p0ETERMINED TO BE ONE PERCENT OF THE CCW SURGE TANK VOLUME PER HOUR.
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AT 1500 HOURS THE "A" CCW HEAT EXCHANGER WAS AGAIN ISOLATED.
ANALYSIS OF OCCURRENCE-ON JANUARY 24, 1975 IT WAS DETERMINED THAT ONE TUBE WAS LEAKING.
A PLOT OF THE CCW SURGE TANK LEVEL SHOWED THE LEAK TO HAVE DEVELOPED ON JANUARY 16, 19 75.
IT WAS CALCULATED THAT 5.45 E PLUS 03 LITERS OF COMPONENT COOLING WATER WAS RELEASED VIA THE SERVICE WATER DISCHARGE HEADER.
THE AMOUNT OF ACTIVITY RELEASED WAS 0.003 MILLICURIES OF COBALT 60 AND 0.9 75 MILLICURIES OF TRIT IUM.
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CORRECTIVE ACTION-ON JANUARY 25, 1975 THE TUBE WAS PLU.GGED.
A LEAK TEST PERFORMED ON JANUARY 25, 1975 SHOWED NO OTHER APPARENT sr.nci gLEA K S.
THE UNIT WAS RETURNED TO SERVICE ON JANUARY 26, 1975.
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R L HAUETER R B SEWELL E R COOPER J S RANG R W SINDERMAN fi, R B DE WITT CONSMERS POWER COMPANY PALISADES NUCLE AR PLANT ALL CBW/HO NNNN 9
3 1915
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