View source for PNO-III-85-095C, on 851212,diesel Generator 14 Tripped on Low Lube Oil Pressure During Test Run.Bearing Failure & Erratic Behavior of Svc Water Pump Under Investigation as Possible Causes.Generator Will Be Monitored

{{Adams
| number = ML20138L131
| issue date = 12/12/1985
| title = PNO-III-85-095C:on 851212,diesel Generator 14 Tripped on Low Lube Oil Pressure During Test Run.Bearing Failure & Erratic Behavior of Svc Water Pump Under Investigation as Possible Causes.Generator Will Be Monitored
| author name = Chrissotimos N, Wright G
| author affiliation = NRC OFFICE OF INSPECTION &amp; ENFORCEMENT (IE REGION III)
| addressee name = 
| addressee affiliation = 
| docket = 05000341
| license number = 
| contact person = 
| document report number = PNO-III-85-095C, PNO-III-85-95C, NUDOCS 8512190173
| document type = PRELIMINARY NOTIFICATION OF EVENT OR OCCURRENCE (PNO,, TEXT-INSPECTION &amp; AUDIT &amp; I&amp;E CIRCULARS
| page count = 1
}}
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l> rh8 PRELIMINARY NOTIFICATION OF EVENTLOR UNUSUAL.0CCURRENCE--PNO-III-85-95C_            Date D cemb;r 12, 1985 This preliminary notification constitutes EARLY notice of events of POSSIBLE safety i :cr public interest significance. The information is as initially received without xv:rification or evaluation, and is basically all that is known by the Region III staff on this date.
Facility: Detroit Edison Company                     Licensee Emergency Classification:
1 Fermi 2 Nuclear Power Station              Notification of an Unusual Event Newport, MI 48166                           Alert                     <
Site Area Emergenc Docket No: 50-241-                          General Emergency g                         XX Not Applicable

==Subject:==
DAMAGE-T0 DIESEL GENERATOR DURING TESTING (THIRD UPDATE)
Dinsol Generator #14 was nine hours into a scheduled 100-hour test run when it tripped on low lube oil pressure at 8:45 a.m. (CST), December 12, 1985. Both Diesel Generators
   -#13 and #14 had'recently experienced bearin ~
repairs. .(See PNO-III-85-95, 95A, and 958)g problems and were in a test run following The licensee is investigating two possible causes for the latest problem: bearing failure and the erratic behavior of #14's service water pump. The licensee reported that at about 7 a.m., the service water pump tripped off for about 19 seconds and then came back on.
' It later tripped for about 4 minutes. Shortly after it came back on,-the #14 diesel generator tripped.-
  -Diesal Generator _#13 testing is in progress while diesel generators #11 and #12 are being reassembled following inspection and repair.
' Regi;n III (Chicago) and the Office of Nuclear Reactor Regulation continue to monitor the diesel generator problems. The impace of this most recent problem on plant availability for restart is unknown at this time.
The State of Michigan will be notified.
Region III received this updated information at 9:45 a.m. (CST), December 12, 1985. This
  .information is. current as of 11:45 a.m., (CST), December 12, 1985.
  ~ CONTACT:     G. Wrig t             N. ri sotimos FTS 388-5695          FTS 388-5716 DISTRIBUTION:
H. St. .                      EDO        NRR        E/W        Willste      Mail: ADM:DMB Chairman Palladino            PA                    IE         NMSS                 D0T:Trans only Comm. Zech                    ELD                   OIA        RES Conn. Bernthal                                      AE0D Comm.- Roberts Comm. Asselstine              SP dD A          Regional Offices ACRS SECY                          INP0 d Dt)            NSAC O. M CA                            RIII Resident Office PDR-                         Licensee:       3D(s          (Corp. Office-ReactorLic.Only)                    ,
0512190173 851212                                                                7gy L                N-BIUcGD-@D9 PDR __                                             d'9IONIII}}

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