05000315/LER-1980-001-03, /03L-0:on 800123,while Performing Airlock Seal Leak Rate Testing,Inner Airlock Declared Inoperable.Caused by Broken Adjustment Bolt.Bolt Will Be Replaced During Next Unit Refueling Outage

/03L-0:on 800123,while Performing Airlock Seal Leak Rate Testing,Inner Airlock Declared Inoperable.Caused by Broken Adjustment Bolt.Bolt Will Be Replaced During Next Unit Refueling Outage

ML17326A530
Person / Time
Site:	Cook
Issue date:	02/22/1980
From:	Michael Brown INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML17326A529	List: 05000315/LER-1980-001-03, /03L-0:on 800123,while Performing Airlock Seal Leak Rate Testing,Inner Airlock Declared Inoperable.Caused by Broken Adjustment Bolt.Bolt Will Be Replaced During Next Unit Refueling Outage 05000315/LER-1980-002-03, /03L-0:on 800125,during Normal Operation,Loop 3 T-average & delta-T Indication Decreased & Determined Inoperable.Caused by Resistance Temp Detector Producing Erroneous Temp Readings.Detector Was Replaced ML17326A528
References
LER-80-001-03L-01, LER-80-1-3L-1, NUDOCS 8002290436
Download: ML17326A530 (2)

LER-1980-001, /03L-0:on 800123,while Performing Airlock Seal Leak Rate Testing,Inner Airlock Declared Inoperable.Caused by Broken Adjustment Bolt.Bolt Will Be Replaced During Next Unit Refueling Outage

Event date:
Report date:
3151980001R03 - NRC Website

text

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0 QB 74 75 REPORT DATE 80 NRC FORM9366 U. S. NUCLEAR REGULATORY COMMISSION (7-77)

LtCENSEE EVENT REPORT 7

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QI tPLEASE PRINT OR TYPE ALLREQUIRED INFORMATION)

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8 60 61 DOCKET NUMBER 68 69 EVENT DATE EVENT DESCRIPTION AND PROBABLE CONSEQUENCES QIO WHILE PERFORMING AIRLOCK SEAL LEAK RATE TESTING PER STP.204 THE INNER AIRLOCK LEAKAGE RATE EXCEEDED THE ACCEPTANCE CRITERIA OF THE TEST.

THE AIRLOCK WAS DECLARED INOPERABLE PER TECH.

SPEC. 3.6.1.3.B.

ACTION ITEMS

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~OS WERE FOLLOWED.

NO PREVIOUS FAILURES HAVE BEEN EXPERIENCED WITH THIS PORTION OF THE AIRLOCK SEAL.

PUBLIC HEALTH AND SAFETY WERE NOT AFFECTED BY THIS EVENT.

THE OUTER AIRLOCK DOOR SEAL REMAINED OPERABLE DURING THIS EVENT.

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COMPONENT TAKEN ACTION ON PLANT METHOD HOURS Q22 SUBMITTED FORM SUB.

SUPPLIER MANUFACTURER

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THE SEAL FAILURE WAS TRACED TO A BROKEN ADJUSTMENT BOLT.

ADJUSTING OTHER ADJUSTING BOLTS RESULTED IN A SEAL WHICH MET THE ACCEPTANCE CRITERIA OF STP.204.

THE BROKEN BOLT WILL BE REPLACED DURING THE NEXT 3

UNIT REFUELING OUTAGE.

CAUSE OF BROKEN BOLT COULD NOT BE DETERMINED.

4 THE SAME TEST PERFORMED 3 DAYS EARLIER WAS SUCCESSFUL.

CZ3 ACTIVITY CONTENT RELEASED OF RELEASE AMOUNTOF ACTIVITYQ 6

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10 44 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION 39

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11 12 13 PERSONNEL INJURIES 7

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11 12 LOSS OF OR DAMAGE.TOFACILITYQ43 TYPE

DESCRIPTION

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10 PUBLICITY ISSUED DESCRIPTIONQ O

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10 I-OCATION OF RELEASE Q36 4S NRC USE ONLY 7

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DISCOVERY DISCOVERY DESCRIPTION Q32 1

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