ML20235T034
| ML20235T034 | |
| Person / Time | |
|---|---|
| Site: | 05000000, Point Beach |
| Issue date: | 03/13/1975 |
| From: | Lafleur J NRC |
| To: | Braun B SWEDEN, GOVT. OF |
| Shared Package | |
| ML20235N317 | List: |
| References | |
| FOIA-87-40 NUDOCS 8707220016 | |
| Download: ML20235T034 (2) | |
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U.S. NUCLEAR REGULATORY COMMISSION MAR 13 $75 J. D. LAFLEUR, JR.
0FFICE OF INTERNATIONAL AND STATE f*b H bh 515 B0 BRAUN STATENS KARNDRAFIINSPEKTION BOX 43058 100 72 STOCKHOIM 43 SWEDEN INFO: ERNEST SOHNS SCIENCE ATTACHE f
AMERICAN EMBASSY STOCKHOLM SWEDEN l
(ACTION SENI TO B0 BRAUN)
IN '1ESPONSE YOUR INQUIRY ABOUT TUBE FAILURE IN U.S. PWR, AM SENDING YOU NOTIFICATION ISSUED BY NRC ON FEBRUARY 28, 1975.
WILL SEND REPORT WHEN AVAILABLE.
NOTIFICATION SAYS THAT TUBE FAILED IN B STEAM GENERATOR OF POINT BEACE 1 REACTOR ON FEBRUARY 27, 1975. FAILURE WAS PROGRESSIVE OVER PERIOD OF ABOUT 48 MINUTES. FIRST INDICATION OF FAILURE WAS SPIKE ON AIR DUECTOR HONITOR AND SUBSEQUENTLY ON BLOWDOWN HONITOR. THIS WAS POLLOWED BY INCREASE IN CHARGING PUMP FIhW gMNg]M j
J. D. LAFLEUR, JR.
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Parm ABC 318 (Rev. 9 55) ARN 0248
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8707220016 870714 PDR FOIA THOMASB7-40 PDR
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- RATE FROM ONE TO THRE2 PUMPS WITH MAXIMUM RATE OF 125 GAIJ4NS PER MINUTE NO SAFETY B@hru UGH REQUIRED.
't SECONDARY TO MAINIAIN WATER LEVEL.
SYSTEM PRESSURE AND STEAM GENERATOR LEVELS CONTROLLED WITHOUT ACTRATION i
0F RELIEF OR SAFETY VALVES.
OUTAGE ASSOCIATED WITH IDENTIFICATION OF FAILED TUBE AND REPAIR WAS EXPECTED TO BE AT LEAST TWO WEEKS. LAST TUBE INSPECTION PERFORMED MAY 1974. WATER CHEMISTRY WAS CHANGED PROM PHOSPHATE TO VOLATILE IN NOVEMBER 1974.
LICENSEE WILL ISSUE REPORT TO THE NRC.
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