05000313/LER-1978-032-03, /03T-0:on 781218,during Surveillance Test on Emergency Escape Hatch,Containment Integrity Violated.Caused by Personnel Error.Personnel Reminded to Exit Containment Personnel Hatch During Emergency Hatch Inner Door Repairs

/03T-0:on 781218,during Surveillance Test on Emergency Escape Hatch,Containment Integrity Violated.Caused by Personnel Error.Personnel Reminded to Exit Containment Personnel Hatch During Emergency Hatch Inner Door Repairs

ML19256B175
Person / Time
Site:	Arkansas Nuclear
Issue date:	01/17/1979
From:	Shively C ARKANSAS POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19256B170	List: 05000313/LER-1978-032, Forwards LER 78-032/03T-0 05000313/LER-1978-032-03, /03T-0:on 781218,during Surveillance Test on Emergency Escape Hatch,Containment Integrity Violated.Caused by Personnel Error.Personnel Reminded to Exit Containment Personnel Hatch During Emergency Hatch Inner Door Repairs
References
FOIA-80-150 LER-78-032-03T, LER-78-32-3T, NUDOCS 7901240201
Download: ML19256B175 (4)

LER-1978-032, /03T-0:on 781218,during Surveillance Test on Emergency Escape Hatch,Containment Integrity Violated.Caused by Personnel Error.Personnel Reminded to Exit Containment Personnel Hatch During Emergency Hatch Inner Door Repairs

Event date:
Report date:
3131978032R03 - NRC Website

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ot,on t ou, E VENT DESCRIPTION AND r,1CHABLE CONSEf 3UENCES h 1During power operation, while performing the semi-annual surveillance o 2 LE l test on the Emergency Escape Hatch, the maintenance personnel opened the outer door while the inner door was open, violating containment i

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.i Lintegrity. Heal,,t.h Physics personnel were monitoring the hatch and there o

IoIr.Ilaas a slight negative pressure in the hatch; therefore, there was no i

lo Iil I release of radiation to the Atmosphere.

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.T-Reportable Occurrence Report No. 50-313/78-32 2.

Report Date: 01/17/79 3.

Occurrence Date: 12/18/78 4

Facility: Arkansas Nuclear One-Unit 1 Russellville, Arkansas 5.

Identification of Occurrence:

This R0R concerns the violation of reactor building integrity by opening the outer door of the Emergency Escape Hatch while the inner door was open.

6.

Ccaditions Prior to Occurrence:

Steady-State Power X

Reactor Power MWth Hot Standby Net Output MWe Cold Shutdown Percent of Full Power 100 g Refueling Shutdown Load Changes During Ro' utine Power Operation ___

Routine Startup Operation Routine Shutdown Operation Other (specify) 7.

Description of Occurrence:

During power operation, while performing the Semi-Annual Surveillance Test on the Emergency Escap~e Hatch, personnel opened the outer door while the inner door was open, violating containment integrity. Health Physics personnel were monitoring the hatch and there was a slight nega-tive pressure in the hatch.

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. heportable Occurrence Report No. 50-313/78-32 8.

Designation of Apparent Cause of Occurrence:

Design Procedure Fbnufacture Unusual Service Condition Including Environmental Installation /

Construction Component Failure (See Failure Data)

Operator Other (specify)

Personnel error 9.

Analysis of Occurrence: -

Since the reactor building integrity was compromised for only a few seconds and there was a slight negative pressure differential across the hatch.way, there was no hazard to the health and safety of the public.

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. ' Reportable Occurrence Report lio. 50-313/78-32 10.

Corrective Action

Personnel were reminded that when the Emergency Escape Hatch Inner Door is being repaired,.all exits should be made through the containment personnel hatch.

11.

Failure Data:

NA G

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