ML20010A285
| ML20010A285 | |
| Person / Time | |
|---|---|
| Site: | Monticello, Dresden, Davis Besse, Palisades, Perry, Fermi, Kewaunee, Point Beach, Byron, Braidwood, Prairie Island, Callaway, Duane Arnold, Clinton, Cook, Quad Cities, La Crosse, Big Rock Point, Zion, Midland, LaSalle, Zimmer, Bailly, Marble Hill  |
| Issue date: | 08/05/1981 |
| From: | Carroll D NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | Wright G ILLINOIS, STATE OF |
| References | |
| NUDOCS 8108110277 | |
| Download: ML20010A285 (2) | |
Text
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-AUG 5 C1_
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S Illinois Department of Nuclear r f-1 y
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Safety
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Mr. Gary N. Wright D
Deputy Director j\\gt 10 gggi e g;,
p 1035 Outer Park Drive, 5th Floor y,s,i g g k s/
Springfield, IL 62704 Q.
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Gentlemen:
The enclosed IE Information Notice No. 81-24 titled " Auxiliary Feed Pump Turbine Bearing Failures" was sent to the licensees listed below on August 5, 1981:
American Electric Power Service Corve?; tion Indiana and Michigan Power Comriuy D. C. Cook 1, 2 (50-315,60-316)
Cincinnati Gas & Electric Company Zimmer (50-358)
Cleveland Electric Illuminating Company Perry 1, 2 (50-440, 50-441)
Commonwealth Edison Company Braidwood 1, 2 (50-456, 50-457)
Byron 1, 2 (50-454, 50-455)
Dresden 1, 2, 3 (50-10, 50-237, 50-249)
LaSalle 1, 2 (50-373, 50-374)
Quad-Cities 1, 2 (50-254, 50-265)
Zion 1, 2 (50-295, 50-304)
Consumers Power Company Big Rock Point (50-155)
Midland 1, 2 (50-329, 50-330)
Palisades (50-255) goo 3 Dairyland Power Cooperative s
LACBWR (50-409)
Detroit Edison Company M '.
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l Fermi 2 (50-341)
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Illinois Power Company Clinton 1, 2 (50-461, 50-462) 8100110277 810805 PDR ORG ESGILPH PDR
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- Illinois Department of Nuclear Safety Iowa Electric Light and Power Company Duane Arnold (50-331)
Northern Indiana Public Service Company Bailly (50-367)
Northern States Power Company Monticello (50-263)
Prairie Island I, 2 (50-282, 50-306)
Public Service of Indiana Marble Hill 1, 2 (50-546, 50-547)
Toledo Edison Company Davis-Besse 1 (50-346)
Union Electric Company Callaway 1, 2 (50-483, 50-486)
Wisconsin Electric Power Company Point Beach 1, 2 (50-266, 50-301)
Wisconsin Public Service Corporation Kewaunee (50-305)
Sincerely, dbtMG g
Dorothy E. Carroll, Chief Word Processing and Document Control Section
Enclosure:
IE Information Notice No. 81-24 cc w/ encl:
D. W. Kane, Sargent & Lundy Resident Inspectors, RIII J. G. Keppler, RIII Division Directors, RIII P. R. Wohld, RIII RIII rI'oli 8/5/81 Y
SSINS No.: 6835 Accession No.:
810720003 IN 81-24 UNITED STATES NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND ENFORCEMENT WASHINGTON, D.C.
20555 August 5, 1981 IE INFORMATION NOTICE NO. 81-24:
AUXILIARY FEEC PUMP TURBINE BEARING FAILURES Description of Circumstances:
During an inspection of one auxiliary feed pump inboard turbine journal bearing to determine the cause of dirty oil, Baltimore Gas and Electric Company found the bearing damaged. The other auxiliary feed pump turbines were disassembled and similar damage was found on all inboard journal bearings. The turbines are Terry Turbine type GS-2.
Bearing lubrication is accomplished by oil ring pick-up from reservoirs at either end of the turbine.
Each reservoir is fitted with a sight glass about three inches long to monitor oil level.
The damage has been attributed to a failure to maintain oil level within a narrow operating range (approximately 1/4 inch) within the sight glass.
A similar instance of bearing failure was discovered by Northeast Utilities during an inservice inspection of the turbine bearings at Millstone Unit 2.
Both facilities reporting the bearing failures have the Terry Turbine type GS-2 where bearing lubrication is supplied by oil ring pick-up only.
The corrective actions taken have been to clearly mark the maximum and minimum al' owed oil levels on the sight glass.
A spot check of other facilities using Terry Turbines in PWR and BWR appli-cations has revealed that the Terry Turbine types GS-2 and GS-1 can have a combination of force feed and oil ring pick-up lubrication.
In these applications, the oil ring pick-up supplies lubrication during startup and coastdown of the turbine.
A check of the Technical Manual has shown that proper oil level range for the oil ring pick-up was not addressed.
- However, the level should be maintained within a narrow range to provide adequate lubrication during startup & coastdown.
No written response to this information is required.
If you need additional information regarding this matter, please contact the Director of the appro-l priate NRC Regional Office.
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Attachment:
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Recently issued IE Information Notices l
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Attachment IN 81-24 August 5, 1981 RECENTLY ISSUED IE INFORMATION NOTICES Information Date of Notice No.
Subject Issue Issued to 81-23 Fuel Assembly Damaged 8/4/81 All power reactor due to Improper Positioning facilities with an of Handling Equipment OL or CP 81-22 Section 235 and 236 7/31/81 All power research Amendments to the reactor, fuel Atomic Energy Act fabrication and of 1954 reprocessing, and spent fuel storage licensees and applicants 81-21 Potential Loss of Direct 7/21/81 All power reactor Access to Ultimate Heat Sink facilities with an OL or CP 81-20 Test Failures of Electrical 7/13/81 All power reactor Penetration Assemblies facilities with an l
OL or CP 81-19 Lost Parts in Primary.
7/6/81 All power reactor Coolant System facilities with an OL or CP 81-18 Excessive Radiation 6/23/81 Specified licensees Exposures to the Fingers of holding byproduct Three Individuals Incurred licenses During Cleaning and Wipe Testing of Radioactive Sealed Sources at a Sealed-Source Manufacturing Facility 81-16 Control Rod Drive System 4/23/81 All BWR facilitics Malfunctions with an OL or CP 81-15 Degradation of Automatic 4/22/81 All power reactor ECCS Actuation Capability facilities with an by Isolation of Instrument OL or CP Lines OL = Operating Licenses CP = Construction Permits t