ML19317H525
| ML19317H525 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 05/23/1980 |
| From: | Jay Collins, Conte R, Shanbaky M Office of Nuclear Reactor Regulation |
| To: | |
| References | |
| PNO-TMI-80-031, PNO-TMI-80-31, NUDOCS 8006130219 | |
| Download: ML19317H525 (1) | |
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PRElli11NAHY NOTIFICATION May 23, 1980 P L*LI'4Itifid N0ilFTCATIO.*i 0: EVLN1 OP UNUSUAL C0tiCURRENCC--PNG-JH1-80-3I r
- t.li preliminary nutificalico constitute <. FARI Y notice of events of POSSIBLE safety or -
nW fic interest sinniiirance.
Ihc iritormatiIin preselite'd is as initially received without
,[rifiQtio'ri o~r~ cv51u'oDon_,a'nd i:, p,asica l,ly_a ll,thh t' is known by,,NRC sta f f,o,n,t,pis date.
l'a,c i l I,ly_: Matropolitan Edison Company Tnree Mile Island, Unit 2 Middletown, Pennsylvania Docket Nuniber 50-370 Senj::,c t,: FAILORF TO MAlhTAIN CONTA!HMCHT INTFGRITY Uuring a review ut records on the attempted containment ent.ry on May 20, 1980, the licensee 4temined that containment integrity was nul naintained for a period of ?-5 minutes coni.rary to Trchnical Specification (TS) 3.6.1. l.
T,uring the equalization of air pressure between thw reactor building and the airlock via the inner door valve, a purge valve on tl'e outer (almospheric) door was lef t open permitting flow from atnosphere into the reactor building via the airlock.
the tuo procedures used tur the entry did not close the outer duur purge valve at the prosce sequence prior to inner door pressure equali7ation.
There was no detectante release of radioactivity from this event.
Menia interest. is expected.
The Commonwealth of Pennsylvania has been infomed.
A press rcich50 f e. not planned by the licensee or the tiPC.
The.*iRC IMI Progran Office stall was notified at 7:30 a.m., un May 23, 1980, by the Tecnnical Specification Compliance Supervisor.
The TMI Program Office considers this reportable por 10 CfR 50.72.
this preliminary notification is issued for infunnation only and the information is current 4, oi' 10:00 u.Ja.
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PREl IMINARY ;401111CA(10N THIS DOCUMENT CONTAINS P00R QUAUTY PAGES 1
8006130219