ML20084T517

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Telecopy Ro:On 721106,while Conducting Post Maint Surveillance During Unit Startup,Hpci Steam Valve 2-2301-4 in Drywell Would Not Open.Cause Not Known.Reactor Pressure Drifted Above Tech Spec Limit During Investigation
ML20084T517
Person / Time
Site: Dresden 
Issue date: 11/06/1972
From: Worden W
COMMONWEALTH EDISON CO.
To: Grier B
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20084T513 List:
References
NUDOCS 8306230240
Download: ML20084T517 (1)


Text

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INCPERADILITY. AT 0240 NOVEM3ER 6 ~972, "HILE CONDUCTIN POSl NAINTENANCE EURVEILLANCE DURING UNIT START-UP, THE HPCI STEAM VAL VE 2-2301-4 IN THE DRY UELL UOULD NOT OPEN. ALTHOUCH THE STARTUP AND HEAT-UP UERE HALTED AT THIS TI!1E, THE REACTCR PRESSURE DRIFTED UP TO ABOUT 100 LDS DURINO INVESTI ACION OFy!E V?gE PROCLEM. AT 0330, THE 1

.., es "HIFT DErAN A SHUT-DOUN OF THE UNIl. AT 0405, UITil REACTOR PREFSURE 77PSIG AND SUBCRITICAL, VALVE TESTED S ATISFACTORILY.

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