05000316/LER-1985-020-01, :on 850822,during Surveillance Testing, safety-related Fire Damper Found Inoperable.Cause Not Determined.Damper Repaired,Tested & Returned to Svc on 850823

:on 850822,during Surveillance Testing, safety-related Fire Damper Found Inoperable.Cause Not Determined.Damper Repaired,Tested & Returned to Svc on 850823

ML20135H979
Person / Time
Site:	Cook
Issue date:	09/20/1985
From:	Allard J INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
To:
Shared Package
ML20135H977	List: 05000316/LER-1985-020-01, :on 850822,during Surveillance Testing, safety-related Fire Damper Found Inoperable.Cause Not Determined.Damper Repaired,Tested & Returned to Svc on 850823 05000316/LER-1985-021-01, :on 850822 & 23,discovered That Several Instrumentation Channel Functional Tests Not Performed as Required.Cause Not Stated.Testing Conducted ML20135H976
References
LER-85-020-01, LER-85-20-1, NUDOCS 8509250091
Download: ML20135H979 (1)

LER-1985-020, on 850822,during Surveillance Testing, safety-related Fire Damper Found Inoperable.Cause Not Determined.Damper Repaired,Tested & Returned to Svc on 850823

Event date:
Report date:
3161985020R01 - NRC Website

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.AN e - n.e w nei ON AUGUST 22, 1985 AT 2200 HOURS WITH THE REACTOR COOLANT SYSTEM IN MODE 5 (COLD SHUT-i l

DOWN), A SAFETY RELATED FIRE DAMPER (IEEE/BDMP) WAS FOUND INOPERABLE DURING THE PERFORM-ANCE OF SURVEILLANCE TESTING PURSUANT TO SURVEILLANCE REQUIREMENT 4.7.10.1.B.

THE TWO LOWER SECTIONS OF THE CURTAIN TYPE DAMPER WERE FOUND LYING ON THE LEDGE OF THE PENETRA-TION. THE REffAINING INSTALLED SECTIONS WERE FOUND WITH THE RELEASE MECHANISM PROPERLY INSTALLED. THESE SECTIONS DROPPED INTO POSITION AS DESIGNED UPON TEST ACTUATION. AN OPENING 5.5 X 16 INCHES REMAINED IN THE PENETRATION. THE SUBJECT PENETRATION IS NEAR THE CEILING IN A WALL COMMON TO THE AB PLANT BATTERY ROOM AND THE CONTROL ROD DRIVE MOTOR-i GENERATORS ROOM AND WAS LAST VERIFIED OPERABLE ON 5/21/84. DETECTION AND CO2 SUPPRESSION SYSTEMS HAVE REMAINED OPERABLE DURING THE ENSUING TIME PERIOD. THE DAMPER WAS REPAIRED, TESTED AND RETURNED TO SERVICE AT 1510 HOURS ON 8/23/85.

SINCE INVESTIGATION COULD NOT DETERMINE THE SPECIFIC CIRCUMSTANCES RELATING TO THE 'CAUSE AND TIME OF OCCURRENCE. THIS EVENT IS PRESUMED TO HAVE EXCEEDED THE REQUIREMENTS OF ACTION STATEMENT A 0F TECHNICAL SPECIFICATION 3.7.10.

A FORMAL ENGINEERING EVALUATION OF THE SAFETY IMPLICATIONS OF THIS EVENT IS BEING CONDUCTED AND WILL BE REPORTED IN AN UPDATED REPORT.

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