05000327/LER-1980-093-01, /01T-0:on 800625,vent Duct in Temporary Air Lock Discovered Breaching Aux Bldg Integrity.Caused by Unauthorized Installation of Duct by Const Workers.Duct Removed,Hole Patched & Sealed

/01T-0:on 800625,vent Duct in Temporary Air Lock Discovered Breaching Aux Bldg Integrity.Caused by Unauthorized Installation of Duct by Const Workers.Duct Removed,Hole Patched & Sealed

ML19320B896
Person / Time
Site:	Sequoyah
Issue date:	07/07/1980
From:	Wilbourn G TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19320B893	List: 05000327/LER-1980-093, Forwards LER 80-093/01T-0 05000327/LER-1980-093-01, /01T-0:on 800625,vent Duct in Temporary Air Lock Discovered Breaching Aux Bldg Integrity.Caused by Unauthorized Installation of Duct by Const Workers.Duct Removed,Hole Patched & Sealed
References
LER-80-093-01T, LER-80-93-1T, NUDOCS 8007150466
Download: ML19320B896 (2)

LER-1980-093, /01T-0:on 800625,vent Duct in Temporary Air Lock Discovered Breaching Aux Bldg Integrity.Caused by Unauthorized Installation of Duct by Const Workers.Duct Removed,Hole Patched & Sealed

Event date:
Report date:
3271980093R01 - NRC Website

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c,unt t t j Unauthorized installation by constructicn workern on unit 2 side of g gcecurity boundary. Construction-personnel have been instructed to keep T r-] 1 tec.porary air lock operational. The duct was removed and the hole 4

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i Tenner.nce Valley Authority Sequoyah ~ Nuclear Plant LEP SUPPLDENTAL INFORMATION SQr,0-50-327/E0 93 Technical Specificatien innolved LCO 3.7.8.1

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Reported Unelar Techuf cal Specif icot ton 6.9.1.12.b and 6.9.1.12.f Cete of Occurrence: 6/25/80 1350 Hrs.

Identi'ication or.d D-9cription of Occu'rence:

Pernunnel in the irradiate aren for cther routine tests dircovered that constructfen vorkere had installed a duct thrc'igh the temporary airlock br twee n reactor building two and the refooling floor. This duct invalids-ted the auxiliary huilding integrity because the auxiliary building gan treateent ryotem would not have been nble to meeta its technical specifica-tion requirements.

fpyarent Cause of Occurrenec:

Construction personnel installed duct to obtain fresh air into reactor building tuo annulus.

Analynin_of Occurrence:

Ther<s was no hazard to the public health and anfety because the unit one ha= never haen critical.

Corrective Actien Ditet vno blocked at II15 hrs. and has nince been removed and air 1cck patched ent! nenled.

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