ML20211P798
| ML20211P798 | |
| Person / Time | |
|---|---|
| Site: | Fermi  |
| Issue date: | 07/25/1985 |
| From: | Weil C NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | Pawlik E NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| Shared Package | |
| ML20211P714 | List: |
| References | |
| FOIA-86-245 NUDOCS 8607230365 | |
| Download: ML20211P798 (1) | |
Text
I
.e aseg UNITED STATES
\\
NUCLEAR REGULATORY COMMisslON
['
'i nEcios m f
799 ROOsEvtLT ROAD g
g cLes eLLys. stusois sois?
July 25, 1985 MEMORANDUM FOR:
Eugene T. Pawlik, Director, Office of Investigations Field Office, Region III FROM:
Charles H. Weil Investigation and Compliance Specialist
SUBJECT:
FERMI SAFETEAM CONCERN NO 676 (50-34I)
Enclosed for the information of your staff is a copy of the Fenni SAFETEAM Response i!o. 675. A copy of the complaint was previously provided to you as an enclosure to my July 9, 1985 memo, same subject.
Charles H. Weil Investigation and Compliance Specialist
Enclosure:
Memo dtd 7/15/85, P. M. Byron to C. H. Weil l
l l
860723o365 e60714 Nf4TE 4 6-245 PDR QG-fS-R-O/7l-
D
~
o UNITie STATES IS, IGUCLEAR REGULATORY COtedlSSION f
a,,,o u,
i
=
mv
.... _ =.,<<,
g, December 11, 1985 NOTE TO: James G. Keppler, Regional Administrator, Region III FROM:
A. Bert Davis. Deputy Regional Adr.inistrator
$UlWECT: FERMI DIESEL GENERATDRS Information on the Fermi diesel generators is forwarded as requested.
A. Bert Davis Deputy Regional Administrator
Enclosure:
As Stated w mv&
'\\Qf
1 h
i 4
During a surveillance run last January Emergency Diesel Generator (EDG)
No. Il tripped due to low oil pressure. The investigation revealed several
\\
damaged bearings on the upper crankshaft which were attributed to lack of lubrication during engine starts. Some upper crankshaft journals were also damaged. A modification had been installed prior to the failure which was i
supposed to lubricate the upper bearings during engine starts. As a result, the licensee had discontinued manual prelubrication of the engines. An inspection of the other three EDG's revealed damage had also occurred on EDE j
No. 12. While no damage was found on EDG's No. 13 and No. 14, the inspectors noted a peculiar " frosted" appearance on the bearing of EDG No. 14. That issue was never resolved last winter.
j A review of the operating and maintenance histories of all four engines failed to explain why Nos. 11 and 12 had suffered severe bearing damage while Nos. 13 and 14 had not.
The licensee replaced EDG No.11 upper crankshaft and all its associated bearings. EDG No. 12 upper crankshaft bearings were also replaced. A Itcense condition was established which required the licensee to analyze monthly oil samples for metal content, inspect the oil filters quarterly and perform a main bearing gap check if a specific number of particles were found, and perform a main bearing gap check after 20 " dry" starts or 18 months whichever occurred first.
During a 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> surveillance run last November on EDG No.13, abnonnel noises were heard by an operator after approximately 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> and the engine s
i i
J
.g.
was tripped. The investigation revealed upper crankshaft damaged bearings again. EDG No. 14 was opened and, while no damaged bearings were found, the inspectors feel that the condition noted last February has deteriorated. A rougher surface appears in the original " frosted" surfaces and also on new bearing surfaces. Scoring and much more dirt was also evident. Slight signs of distress were noted in some of the grooving.
Reluctantly the licensee opened EDG No. Il and several upper crankshaft main bearings were fodnd in different stages of distress. This damage was not 1
expec,ted, and as a result EDG No. 32 was opened. The bearings on EDG No. 12 were found in good condition although there are some signs which need investigation.
1 The licensee has again contacted the vendor and Failure Analysis Associates, Inc. to investigate the problem. Both were involved in last winter's investigation. The NRC is using Franklin Research Center (FRC) in Philadelphia as its main consultant, and bearing lube oil, bearing conditioner, and lapping compound samples have been taken to the FRC for analysis. The NRC and the licensee are also pursuing what differences in operating, maintenance, material lube oil, etc., there may exist between the type of diesels at Fermi 2 vs the same vendor diesels at other nuclear facilities.
(Duane Arnold, Prairie Island) 4
i t
i It should be noted that the license conditions established last March to 1
forewarn of impending bearing damage failed to detect the recent failures.
The oil analysis results up to the month before the failures showed no abnormal results. The filter inspections also failed to warn of an impending i
failure, as did the bearing gap check performed at the time EDG No. 11 was cpened this month.
I e
I ti
?
6 I_
b
\\
4 I
i
?
.=
J ELIMINARY NOTIFICATION OF EVEN~
R UNUSUAL OCCURRENCE--PNO-III-2
'O Date August e,1985 is preliminary notification constitutes EARLY notice of events of POSSIBLE safety or
' blic ir.terest significance. The information is as initially received without veri-cati:n er evaluation, and is basically all that is known by the staff on this date.
- cility: Detroit Edison Company Licensee Emergency Classification:
Fermi 2 Nuclear Plant Notification of an Unusual Event Newport, MI 48166 Alert Site Area Emergency Docket No. 50-341 General Emergency K Not Applicable
'rbject: COUNTY BOARD OF COMMISSIONERS REQUEST INVESTIGATION OF UTILITY AND NRC The Monroe County Board of Comissioners decided on~ August 6,1985, to request r naressman John Dingell to conduct a full investigation of the operational procedures o
- nd'the credentials of employees performing operations at the Fermi 2 plant. The request will also include a full investigation of whether NRC representatives at the site were responsible for the withholding of infomation from the Comission and the public. The request stems from the July 2,1985 unplanned criticality which was not reported to the Region III office until July 15, 1985.
(Reference PHO-III-85-58). The formal request has not yet been made in writing.
The Office of Investigations is currently conducting an investigaticn into the timeliness of reporting and the circumstances related to the event. Mr. Kappler, Regional Administrator, contacted the Chairman of the Board of Comissioners to inform him of the ongoing investigation and inspection activities
- and offered to brief the Commission on the event. The Comission will consider this offer.
The plant is currently in cold shutdown while completing several corrective actions to minimize operational errors, and to perform maintenance.
The State of Michigan will be infomed.
The utility was infomed of the Board of Comissioners' decision late on August 6, and they in turn, informed the Senior Resident Inspector early on August 7,1985.
N.
issot$s (388-5716) rhlius(388-5603)
[9 ISTRIBUTION:
. St. 3 34 MNBB 3 : n Phillips3: 43 E/W y.3A Willste 3 #
laiman Palladino EDO NRR IE NMSS om. Roberts PA OIA RES om. Asselstine MPA AEOD Iom ELD Air Rights k.14 MAIL:
Iom. Bernthal
- M ADM:DMB 3CY NSAC w J')
DOT: Trans Only 3RS O
Applicable Resident Site 4: 6J?"
3R Regions 14. H, II 0 :W, IV y V), V V : n.
Licensee (Corporate Office) 4 ;80 Rev. 07/06/84 M e /e t W T i p.
.