ML20085G762
| ML20085G762 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry  |
| Issue date: | 09/12/1973 |
| From: | Green H TENNESSEE VALLEY AUTHORITY |
| To: | US ATOMIC ENERGY COMMISSION (AEC) |
| Shared Package | |
| ML20085G751 | List: |
| References | |
| AO-BFAO-7312T, NUDOCS 8308290339 | |
| Download: ML20085G762 (1) | |
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2057298316 TDBN ATHENS AL 74 09-12 0134P EST MS-US {TOMIC ENERGY COMMISSION DIRECTORATE OF REGULATORY OPERATIONS, 3
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SUBJECT BFAO-7312T. AT 400AM 9-12-73 DURING REACTOR C00LDOWN THE REACTOR BUILDING TO SUPPRESSION CHAMBER VACUUM BREAKERS O
FAILED TO OPERATE. THE OPERATOR OPENED THE VACUUM BREAKERS AT MINUS 0.6 INCHES OF WATER TO RELIEVE THE DIEEERENTIAL PRESSURE.
O THE VACUUM BREAKERS FAILED TO OPERATE BECAUSE DIFFERENTIAL PRESSURE e
SWITCHES PDIS-64-20 AND PDIS-64-21 FAILED TO OPERATE. THE REASON g
FOR THEIR FAILURE IS BEING INVESTIGATED. THE REACTOR WAS SHUTDOWN 7iaci psen G
AND LESS THEN 212 DEGREE F O
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