05000316/LER-1978-096-03, /03L-0 on 781209:during Rapid Load Reduction from 100% to 88%,axial Flux Difference Went Outside Target Band. Air Leak on a Condenser Vacuum Breaker Caused Increase in Back Pressure on Main Condenser

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/03L-0 on 781209:during Rapid Load Reduction from 100% to 88%,axial Flux Difference Went Outside Target Band. Air Leak on a Condenser Vacuum Breaker Caused Increase in Back Pressure on Main Condenser
ML17317A829
Person / Time
Site: Cook 
Issue date: 12/20/1978
From:
INDIANA MICHIGAN POWER CO.
To:
Shared Package
ML17317A823 List:
References
LER-78-096-03L, LER-78-96-3L, NUDOCS 7812270277
Download: ML17317A829 (2)
v • d • e


LER-1978-096, /03L-0 on 781209:during Rapid Load Reduction from 100% to 88%,axial Flux Difference Went Outside Target Band. Air Leak on a Condenser Vacuum Breaker Caused Increase in Back Pressure on Main Condenser
Event date:
Report date:
3161978096R03 - NRC Website
v • d • e

text

U.S. NUCLEAR REGULATORYCOMMISSION

{PLEASE PRINT OR TYPE ALLREQUIRED INFORMATION)

QB NRC FORM 366 I7-77)

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~o2 DURING A RAPID LOAD REDUCTION FROM lOOX to 88

~O3 OUTSIDE THE TARGET BAND.

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AN AIR LEAK ON "A" CONDENSER VACUUM BREAKER D

THE MAIN CONDENSER.

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MAIN STEAM.

BORATION AND CONTROL WITHDRAWAL RESTORED AXIAL FLUX WITHIN LIMITS I 3

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NO OTHER CORRECTIVE ACTION PLANNED.

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