ML021510295
| ML021510295 | |
| Person / Time | |
|---|---|
| Site: | Beaver Valley, Davis Besse, Mcguire, Indian Point, Kewaunee, Saint Lucie, Grand Gulf, Cooper, Sequoyah, Arkansas Nuclear, Braidwood, Susquehanna, Surry, North Anna, Turkey Point, River Bend, Crystal River, Ginna, Diablo Canyon, Callaway, Vogtle, Farley, Clinton, Cook, Comanche Peak, Quad Cities, McGuire  |
| Issue date: | 05/15/2002 |
| From: | Gardner R, Mike Norris Office of Nuclear Security and Incident Response, NRC/RGN-III |
| To: | |
| References | |
| 10 CFR Part 21 | |
| Download: ML021510295 (10) | |
Text
05/i5/02 WED 15:07 FAX 6148853990 SOLIDSTATE CONTROLSS i001 A
SOLIDSTATE CONTROLS, INC.
The Powe.r to Keep Businesses in Business May 10, 2002 VIA FAX 301-816-5151 (10 pages total)
US Nuclear Regulatory Commussion Document Control Desk Washington, DC 20555
Subject:
10 CFR 21 NOTIFICATION - POTENTIAL DEFECT:INVOLVING FAN ASSEMBLIES USED IN FORCED AIR COOLED UNMNTERRUPTIBLE POWER SUPPLY SYSTEMS "The attached 1 OCFR Part2l record, Attachment A, is submitted to report a potential for a defect in fan assemblies used in Uninterruptible Power Systems manufactured under the Solidstate Controls, Inc., IOCFR50 Appendix B Program.
Each of the plants, as indicated in the attached reporting, has been notified of this report and requested to inspect and replace affected assemblies as necessary. Attachment B is a typical notification letter that has been provided to our clients. Attachment C is a listing of notified clients.
Sincerely, SOLIDSTATE NTROLS, INC.
W. G. Hampton Director, Quality Assurance WGHIFAN NRC I OCFR2 I NOTIFICATION
,b rearborn Driv, Columbus he.
'-l 13
05/15/02 WED 15:07 FAX 6148853990 SOLIDSTATE CONTROLSS (6002 Attachment A May 10, 2002 10 CFR 21 NOTIFICATION -- POTENTIAL DEFECT INVOLVING FAN ASSEMBLIES USED IN FORCED AIR COOLED UNINTERRUPTIBLE POWER SUPPLY SYSTEMS 1-Identification of the individual and firm informing the commission:
William (3. Hampton Director, Quality Assurance Solidstate Controls, Inc.
875 Dearborn Drive Columbus, OH 43085
- 2. Identification of the facility and basic component involved:
Affected parts were manufactured between February 1999 and February 2002. Parts were used in both safety (1E) and non-safety applications.
See Attachment C.
- 3. Identification of the firm supplying the basic component:
Solidstate Controls, Inc.
875 Dearborn Drive Columbus, OH 43085
- 4. Nature of the defect:
PROBLEM SEEN: The above assembly contains a component part - an aluminum, five-wing fan blade, which potentially could separate from the hub. If the blade should come loose there may not be an alarm indication of loss of cooling. Additionally, t:he loose blade may cause a short circuit if it falls into the equipment and should land across opposing current carrying devices.
CAUSE: We have determined that one fan blade style from one specific manufacturer of part number 03 -470100-00 could, under certain conditions, scparate from its hub.
2
05/15/02 WED 15:08 FAX 6148853990 SOLIDSTATE CONTROLSS j003 Attachment A EFFECT ON SYSTEM PERFORMANCE: Fan AssembW - THE SEPERATION OF THE BLADE FROM THE HUB COULD CAUSE THE SYSTEM TO DROP POWER TO THE LOAD. If the worst case failure mode described above were to occur, it would result in the motor continuing to operate, thereby, not allowing the internal alarm mechanism to activate. Further, the blade itself could fall into the operating equipment causing a short circuit. It is important to note that the short circuit situation has not been reported.
- 5. Date the defect was discovered to effect a basic component:
The determination that a. defect affected a basic compone.nt resulted from a problem reported by First Energy - Toledo Edison - Davis Bessie Plant in a non safety applicationwith subsequent verification of the problem as reported, and detailed investigation OIL April 15, 2002
- 6. Number and location of all such components:
See # 2 above.
- 7. Corrective action that has been/is being taken:
a) Solidstate Controls has upgraded the fan blade from the aluminum, five-wing, one-piece design, to a prior proven, more robust two-piece, four-wing design, with an operating record of no failures in excess of 10 years. Any replacement assembly will consist of a blade that will be this two-piece, four-wing design.
b) Notified all companies/plants that have received parts:or systems with the affected parts within manufacture dates to inspect or replace the affected assemblies. They need not return the potentially defective assemblies to Solidstate Controls, Inc. They should be discarded.
- 8. Additional advice related to the defect:
Recommended Inspection: Solidstate Controls, Inc. is recommending that plant maintenance organizations inspect the fan blades in SClIlUninterruptible Power Systems purchased between February 1999 and January 2002 or had replacement fans installed during this same time period, to assure that the following conditions ARE present.
3
05/15/02 WED 15:08 FAX 6148853990 SOLIDSTATE CONTROLSS Attachment A
- That all blades are secure on the hub, and
- That no obvious vibration or out-of-balance situation is present, and
- That the indi'idual blade wings are not obviously distorted or bent and are of visually equal distance from the cage fings/ribs.
IF THE BLADE IS LOOSE OR WOBBLES THE ENTIRE FAN ASSEMBLY SHOULD BE REPLACED.
4 0o04
05/i5/02 WED 15:08 FAX 6148853990 SOLIDSTATE CONTROLSS 2005 Attachment B May 10, 2002 (Typical sample of client notification letter)
May 10, 2002 Attention: Manager, Nuclear Licensing & Operations Support Virginia Power Innsbrook Technical Center 5000 Dominion Blvd.
Glen Allen, VA 23060
Subject:
Notification of Potential Defect - 10CFR21 Report.
Gentlemen:
According to our records your Plants recently purchased a system or replacement part for your Solidstate Controls Inverters, Chargers and/or R-gulating Transformers. Wc have identified a potential problem with the Fan Blade part in that purchase. "Ihe same fan blade is used in both safety (IE) and non-safety equipment.
SCI Part Number: 80-900035;-90 or 80-570005-90 Part
Description:
Fan Assembly - 10 inch. Unit cooling, Quantity: See attached list Fan Assemblies Affected: Manufactured between February 1999 and February 2002 The attached pages provides a description of the situation about the above panl(s). We request that you review your parts inventory and operuting systems for the involved p-art.
Solidstate Controls will be providing replacement fan assemblies. If you have fan assemblies in use or in stock with a four-wine design, they are NOT affected. Only the fan assemblies with the aluminum, five-wing design are involved. Contact Ms. Sue Wampiler to either request the replacement fans and instructions for installation to be performed by your own plant maintenance personnel or request a field service technician to do the replacement installation. Call for Ms Wampler at 1-800-635-7300 or Client Services at 1-800-222-9079.
NOTE: Muffin type tubeaxial fans pitysically mounted on heat sinks are not involved with this notice.
Additionally, the US Nuclear Regulalory Commission is also being advised of this report.
5
05/15/02 WED 15:08 FAX 6148853990 We regret the inconvenience this has ca.used you. If you have any questions you may contact Ms. Wampler or the undersigned.
Sincerely, SOLDISTATE CONTROLS, INC.
W. G. Hampton Director, Quality Assurance CC: Mr. Conway Kehoe (NUPIC Reprasentative)
Innsbrook Technical Center (2NWI) 5000 Dominion Blvd.
Glen Allen, VA 23060 6
[ao 00 SOLIDSTATE CONTROLSS
05/i5/02 WED 15:09 FAX 6148853990 SOLIDSTATE CONTROLSS j007 Attachment B SCI Part Number: 80-570005-90 or 80-900033-90 Part
Description:
Fan Assembly - 10 inch unit cooling PROBLEM YOU COULD SEE: The above assembly contains a component part - an aluminum, five-wing fan blade, which potentially could separate from the hub. If the blade should come loose there may not be an alarm indication of loss of cooling, and/or the loose blade may cause a short circuit if it falls into the equipment and contacts exposed electrically active parts.
CAUSE: We have determined that one fan blade style from one specific manufacturer of part number 03-470100-00 could, under.Certain conditions, separate from its hub.
EFFECT ON SYSTEM PERFORMANCE: If the worst case failure mode described above were to occur, it would result in the motor cofitinuing to operate, thereby, not allowing the internal alarm mechanism to activate. Further, the blade itself could fall into the operating equipment causing a short circuit. It is important to note that the short circuit situation has. not been reported.
ACTION REQUIRED: Solidstate Controls, Inc. is recommending that plant maintenance organizations inspect the fan blades in SCI Uninterruptible Power Systems purchased ben'een February 1999 and January 2002 or had replacement fans installed during thi, same time period, to assure that:the following conditions ARE present
- That all blades are secure on the hub, and
- That no excessive vibration or out-of-balance :situation is present, and
- That the individual blade wings are not obviously distorted/bent and visually, equ:d distance from the cage rings.
IF THE BLADE IS LOOSE OR WOBBLES THE ENTIRE FAN ASSEMBLY SHOULD BE REPLACED.
SCI recommends this inspection be performed immediately upon rcceipt of this correspondence and at two-month intervals thereafter until your plant's scheduled preventive maintenance fan assembly change-out occurs.
7
05/15/02 WED 15:09 FAX 6148853990 SOLIDSTATE CONTROLSS 008 Attachment B Fan change ouL can be accomplished either by arranging fbr a service technician to visit your site to perform the change out operation, or we will provide replacement fan assembli.es and instructions for your maintenance personnel to replace the assemblies themselves, Contact Ms. Sue Warnpler and if necessary, we can schedule a service technician to visit your site to perform the change out activity or ship the replacement assembly(ies). It is not necessary to return the defective fin assemblies to SCI.
The assemblies should be discarded. Contact Solidstate Controls at 1-800-635 7300 or 1-800-222-9079 SOLIDSTATE CONTROLS CORRECTIVE ACTION: Solidstate Controls has upgraded the fan blade from the aluminum, five-wing; one-piece design, to a prior proven, more robust two-piece, four-wing design, with an operating record of no failures in excess of 10 years.
US NUCLEAR PLANTS IMPACTED BY TIllS ACTION:
See Attachment C 8
05/15/02 WED 15:09 FAX 6148853990 SOLIDSTATE CONTROLSS
[009 Client Listing for Notification Attachment C Client Name/Plant AEP - DC Cook AECL AMEREN - UE-Callaway AMERICAN ELECTRIC, INC.
ALA PWR - Farley COMM ED. - Braidwood COMM ED - Quad Cities Dominion -North Anna Dominion - Surry DUKE - McGuire Energy Northwest ENTERGY - Grand Gulf ENTERGY - Riverbend ENTERGY - Arkansas Nuc.
One Ergytech FIRST ENERGY-Davis Besse FIRST ENERGY - Beaver Valley FLA PWR - Crystal River FP&L - St. Lucie FP&L - Turkey Pt.
Job No.
Date Shipped B74006 B72995 C74539 C72921 P73164 S72157 B73062 P72971 P73378 S72825 B74831 B74831 673154 B77626 B77811 C72784 S71951 S73867 B76393 C75200 C75203 B77611 P72963 C77284 B77552 B77199 B74941 B78412 C73423 P77393
$77420 R78169 C71727 C72400 P73980 P74213 P74297 P75384 P74667 P749 10 P72251 P72852 P74044 10/2311999 6/25/1999 3/8/2000 3/30/2000 612911999 4/8/1999 8/6/1999 5/25/1999 7/26/1999 7/19/1999 3/24/2000 5/2/2000 2115/2000 6/7/2001 10/25/2001 1/7/2000 4/30/1 999 3/29/2000 11/27/2000 12/22/2000 12/22/2000 5116/2001 5/28/1999 7/20/2001 413/2001 518/2001 4/412000 10/2/2001 3/8/2000 3/7/2001 12/28/2001 10/18/2001 4/30/1999 8/6/1999 10/19/1999 11122/1999 12/10/1999 5/15/2000 1/31/2000 317/2000 2118/1999 5/28/1999 11/11/1999 PO No.
NU040000003428 NU04 0000001673 NU04-0000004951 C39490 780011-1825 5541-2551 QP990549 491698 42J1 85 368002 45036135 45036135 70005097 45078661 45082577 MN51707 MN47563 MN56340 NE426 306429 306422 308486 MP990500 RBY10631 PQY10468 00-2-22604-CNH 45012709.
45027436" 18664 7055861 7053185 7064941 F77311D 78768 40836 41322 41663 45655 unknown S00559 00109 36259 37907 41008 Fan Quantity 20 18 12 10 1
4 18 2
1 10 2
1 2
22 10 18 12 16 3
4 16 1
3 15 8
5 1
1 16 1
12 4
16 4
2 4
2 1
1 1
2 2
2 Part Number/System 80-570005-90 80-900033-90 System System 80-570005-90 System 80-900033-90 80-570005-90 80-570005-90 System 80-570005-90 80-900033-90 80-900033-90 80-900033-90 80-900033-90 System System System 80-900033-90 System System 80-900033-90 80-570005-90 System 80-900033-90 80-570005-90 80-900033-90 80-900033-90 System 80-570005-90 System 80-900033-90 System System 80-570005-90 80-570005-90 80-570005-90 80-570005-90 80-570005-90 80-900033-90 80-900033-90 80-900033-90 80-900033-90 9
05/15/02 WED 15:10 FAX 6148853990 Client Listing for Notification Client NamelPlant ILLINOIS POWER - Clinton KEPCO - Koseal NEB PUB PWR DIST - Cooper NIAGARA MOHAWK NY PWR ATHY - Indian Point 3 OMAHA PUB PWR DIST PP&L - Susquahana PG&E - Diablo Canyon RG&E - Ginna SOUTHERN CALIF EDISON SOUTHERN NUC-Vogtle TVA - Sequoyah TEXAS UTIL. - Comanche Peak WIS PUB SVC - Kewaunee Nuc Attachment C Job No.
Date Shipped P75211 P75907 P73036 F73860 B75504 P78024 S75510 P74314 P74858 B78913 F68041 P74878 F77549 P75131 P75178 B71934 B73280 675240 876672 S78968 F77175 P76585 P77210 P77713 P79465 S78282 B74248 C72143 S75249 S76869 6115/2000 10/24/2000 6/29/1999 11/24/1999 7126/2000 6/6/2001 9/6/2000 12/10/1999 2/2912000 1/4/2002 10/30/2000 313/2000 5/31/2001 4/10/2000 4/17/2000 1/29/1999 8125/1999 6/9/2000 1/30/2001 1/11/2002 3/23/2001 11/8/2000 2/15/2001 4127/2001 1129/2002 10/24/2001 12/8/1999 8131/1999 1/17/2001 3/30/2001 PO No.
45073 46882 566711 567693 COONYG4-0073-e60 780013-463 COONKR-1-D003,380 992624 00-27879 01-37169 97-14883 4500019058 35292 0-11989-1 011976-1 097669RMA4500680807 99897 103077 105438 108855 5000003028 142167-DIR-0377554 147615-SOL 151874-DIR-0392611 7052874/001'.
7050995 P-00NC8-259314ý.000 P-99IN15F-24661 6-00 320466 6D6 268870 Fan Quantity 2
2 6
6 16 1
4 2
1 16 12 1
8 1
5 2
2 2
4 2
6 4
4 8
1 4
1 30 42 Part Number/System 80-900033-90 80-900033-90 80-570005-90 80-570005-90 80-570005-90 80-570005-90 System 80-570005-90 80-570005-90 80-900033-90 80-570005-90 80-570005-90 80-570005-90 80-570005-90 80-570005-90 80-900033-90 80-900033-90 80-900033-90 80-900033-90 80-900033-90 80-570005-90 80-570005-90 80-570005-90 80-570005-90 80-570005-90 System 80-900033-90 System System 10 System 511 Total 10 SOLIDSTATE CONTROLSS
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