ML20059F263
| ML20059F263 | |
| Person / Time | |
|---|---|
| Site: | Millstone, Hatch, Monticello, Calvert Cliffs, Peach Bottom, Fermi, Harris, Arkansas Nuclear, Prairie Island, Brunswick, Surry, Limerick, North Anna, Vermont Yankee, Crystal River, Haddam Neck, Vogtle, Duane Arnold, Farley, Cook  |
| Issue date: | 01/07/1994 |
| From: | Horinka M COLTEC INDUSTRIES, INC. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| REF-PT21-94 NUDOCS 9401130243 | |
| Download: ML20059F263 (5) | |
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J m-10 '94 09:47 ID:COLTEC PARTS SERUlG TEL NO:7137448324 9011 P01
, Coltecindustries
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701 Lawton Avenue Belott, Wisconsin 63511-5492 Telephone:006/3S4 4411 Telecop;er;608/354 0382 Document Control Desk 7 January, 1994 United States Nuclear Regulatory Commission Washington D.C.
20555 Subjects Air Start Distributor Cam - 10 CFR Part 21 notification.
To whom it may concern Fairbanks Horse was notified by Virginia Power - North Carolina Power via a copy of their failure analysis report NESHL-Q-058 that the subject component had failed.
A cracked cam was found during a normal maintenance activity.
The cams were manufactured by Fairbanks Horse as part of the original engine orders.
They bear the FH part number of 16101412.
The nature of the defect is cracking due to stress risers resulting from arc marking of the can.
Growth of the crack is by intergranular stress corrosion until a critical size is met.
When the critical size is met, high hoop stress loading occurs and cracking results to relieve the stress.
The discovery date was 4/19/93, and the evalua-
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tion completion date was 1/7/94.
Some cams had been manufactured using the are marking technique.
This marking. coupled with a higher bolt torque due to shaft taper resulted in the high hoop stress.
The method of marking was changed in the past to scribing the data on the cam.
Units shipped before 1979 are suspect.
A Substantial Safety Hazard exists, as cracking could result in a shift in the air start distributor timing, thus causing a failure to start.
Fairbanks Horse strongly suggests that the sites referenced in Appendix I inspect the air start distributor cam as soon as prtctical.
If the cam is marked by scribing, and no timing slip has ocer.tred, no further replacement work need be done.
If the cam is arc r.arked the owners should penetrant test the can and reaardless of it's condition obtain a new cam.
All cams should be lapped to the shaft to obtain at least a 70s contact pattern.
The nut should on reassembly be torqued to 50 - 60 foot pounds.
This will allow for adequate clamping forces to hold the can secure to the shaft.
110019 Michael S.
Horinka Distribution Hanager Quality Assurance Appendix I and Field Quality T. Stevenson W. Martin
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JAN-10 '94 08:48 ID:COLTEC PARTS SERVICE TEL NO:7137448324 Mail P02 PAGE 1 APPENDIX i PART 21 CONTACTS BY CUSTOMERS CUSTOMER Alabama Power Company CONTACT NAME Southem Nuclear Operating Company ADDRESS PO BOX 1295 CITY, STATE, ZIP CODE Birmingham, Alabama 35201 Purchas' g Manager CD n
Nuclear Administration _
CUSTOMER Arkansas Nuclear Orw CONTACT N AME Ergergy Operations ADDRESS A kartsas Nuclear One j
RL 3, BOX 1370, South Junction tiIEghways U.S. 64 West and Arkansas 333 South CITY, STATE, ZIP CODE Russekille, AR 72801 Manager Industry everwIreview CD CUSTOMER BaRimore Gas & Ek<2tric CONTACT NAME Supervtsor, Vendor Audhs ADDRESS Cakert CWis Nuclear Power Ptarn 1650 Cakert Cliffs Parkway CITY, STATE, ZIP CODE Lusby, MD 20657 CD CUSTOMER Carpinna Power & Ligt A Company CONTACT NAME Manager - Nuclear Licensing ADDRESS DOX 1551 CIT Y, STATE, IIP CODE Raleigit, North Caruina 27502 CD 4
JAN-10 '94 08:49 ID:COLTEC PARTS SERVICE TEL NO:7137448324
- 011 P03 PAGE 2 APPENDIX l PART 21 CONTACTS BY CUSTOMERS CUSTOMER - Detolt Edison CONTACT NAME ADDRESS 6400 North Dixie liitfway CITY, UTATE, ZIP CODE Newport, MI 48166 CO Nuclear Esp _i,g (ETS)
CUSTOMER Geortpa Power Company i
CONT ACT N AME David M. Vamer ADDRESS Southem NuclearOpNhung Company P.O. Box 1295 CITY, STATE, IIP CODE Birmingham, AL 35201 j
CO Manager - Nuclear Procuremeret CUSTDMEH towa Elecine Light & Power Company CONTACT NAME Materials Managemern Record Corarol ADDRESS Dunne Arnold Energy Cerner 3277 DAEC Road CITY, STATE, ZIP CODE Pakr, Iowa 52324 CO irwernary/Accourd Processor l
CUSTOMER: Northeast Utiinies CONTACT NAME Mr. Thomas J. Dense ADDRESS NUSCO-Vendor Irdormation Coordiretor Mat Ekop W-219 P.O. HOX 270
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CITY, STATE. ZIP CODE Hartford, CT 06141-0270 C/D Manager Nuclear Operation Servbes i
JAN-10 '94 00:49' ID:COLTEC PARTS SErsVICE TEL'NO:7137448324
- 011 PO4' j.;
b PAGE 3 APPENDIX i PART 21 CONTACTS BY CUSTOMERS' CUSTOMEH Nonhem States Posser Comparry CONTACT NAME-ADDHESS Power Supply Quality Assurance 414 Nioimpet Mall Renaissanne Square 10 -
CITY, STATE, ZIP CODE MC, ", MN 65401 CD Supenntendent SuppierQuality Assurarme y
CUSTOMER PhEndolphia Electnc Co.
CONTACT NAME ADDRESS Correspondence Control Desk P.O. BOX 195 -
_ CITY, STATE, ZIP CODE Wayne, PA 19067 CD Manager-Licensing Seouan CUSTOMER Flonda Power Corporation CONTACT NAME Mr. George Obemdorfer ADDRESS Cryseal River Energy Complex 15760 West Power Line Road CITY, STATE, ZIP CODE Crystal River, FL 34428-670s CO: Nualear Prneuremerit QA CUSTOMER Virginia Power e
CONTACT NAME ADDRESS lewisbrootr Technical Cerwer 5000 Dominion Boulevard CITY, STATE, IIP CODE h Aeon, VA 23060 -
CD Mannger Nuclear Lkmussng and Programs t
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JAN-10 '94 G8:50 ID:COLTEC PARTS SERVICE TEL HO:7137448324
- 311 P05 PAGE 4 APPENDIX l PART 21 CONTACTS BY CUSTOMERS 2
CU!TTOMEi1 Vemont Yankee Nuolcar Power Corporation CONTACT NAME ADDRESS P.O. DOX 157 CITY, UTATE, ZIP CODE Vernon, VT 05354 CD Operating Exponence Coordinator
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CUSTOMER OPU Nuclear Corporation f
C M NAME
_f Ad6,Three M5e is P.0-M
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N CITY, SgTCODE Middletown, PA 17057 N
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CD' Procuremerd QJIkpanager X
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