View source for PNO-III-85-095D, on 851113,bearing Damage Occurred to Diesel Generators 13,11 & 14.Caused by Insufficient break-in Period.Bearing Replacement Required for Diesel Generator 11. Decrease in Lubricating Oil Viscosity Noted for 12 & 14

{{Adams
| number = ML20138Q998
| issue date = 12/24/1985
| title = PNO-III-85-095D:on 851113,bearing Damage Occurred to Diesel Generators 13,11 & 14.Caused by Insufficient break-in Period.Bearing Replacement Required for Diesel Generator 11. Decrease in Lubricating Oil Viscosity Noted for 12 & 14
| 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-85-095D, PNO-III-85-95D, NUDOCS 8512300181
| document type = PRELIMINARY NOTIFICATION OF EVENT OR OCCURRENCE (PNO,, TEXT-INSPECTION &amp; AUDIT &amp; I&amp;E CIRCULARS
| page count = 1
}}
{{#Wiki_filter:V PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE--PNO-III-85-95D              Date December 24, 1985 pmB This preliminary notification constitutes EARLY notice of events of POSSIBLE safety or public interest significance. The information is as initially received without verification or evaluation, and is basically all that is known by the Region III staff on this date.
Facility: Detroit Edison Company                    Licensee Emergency Classification:
Fermi 2 Nuclear Power Station               Notification of an Unusual Event Newport, MI 48166                           Alert Site Area Emergency Docket No: 50-341                           General Emergency XX   Not Applicable

==Subject:==
DAMAGE TO DIESEL GENERATOR DURING TESTING (THIRD UPDATE)
The licensee is continuing its efforts to evaluate and resolve the diesel generator problems, which began November 13, 1985, with bearing damage to the No. 13 diesel generator during testing. Subsequent examination of two additional diesel generators Nos. 11 and 14, also showed evidence of bearing damage. All three diesel generators have beer, repaired.,
The fourth diesel generator, No. 12, was reinspected and no evidence of damage was identified.
The vendor, Fairbanks Morse, and the licensee have concluded that the damage has been caused by an insufficient break-in period for the diesels. The licensee has instituted a break-in and testing program for the diesels. Region III (Chicago) and the Office of Nuclear Reactor R:gulation are reviewing the licensee's analysis of the diesel problems and proposed r: solution.
During the testing program, additional problems have been identified, including a bearing problem with No.11 that will require bearing replacement. The licensee has also identified a dscrease in the viscosity of the lubricating oil for No.12 and No.14 below the minimum viscosity level. The testing of the two diesels has been halted pending resolution of this matter.
In addition to the diesel problems, work remaining during the current outage includes evaluation of approximately 100 embedments which apparently have greater loads than intended in the design; completion of the installation of the remote shutdown panel; evaluation of an operating problem with a newly installed residual heat removal system purp motor; and resolution of an issue involving a containment penetration which does not meet the General Design Criteria.
The State of Michigan will be notified.
This updated information is current as of 9 a.m., Dece er 2 , 1985.
CONTACT:   G. Wright J Q FTS 388-5695 N. Chrissotimos FTS 388-5716 DISTRIBUTION:
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BD12300181 851224 PDR    I&E Region III PNO-II I-85-095 PDR Rev. November 1985}}

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