ML021560113
| ML021560113 | |
| 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: | 05/10/2002 |
| From: | Hampton G Solidstate Controls |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| 10 CFR 21 | |
| Download: ML021560113 (10) | |
Text
I VA SOLIDSTATEINC.
A CONTROLS, The Power to Keep Businesses in Business CcON1RtNIlNG COPY May 10, 2002 VIA FAX 301-816-5151 (10 pages total)
US Nuclear Regulatory Commission Document Control Desk Washington, DC 20555
Subject:
10 CFR 21 NOTIFICATION - POTENTIAL DEFECT INVOLVING FAN ASSEMBLIES USED IN FORCED AIR COOLED UNINTERRUPTIBLE POWER SUPPLY SYSTEMS The attached 10CFR Part21 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., 10CFR50 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 CONTROLS, INC.
W. G. Hampton Director, Quality Assurance WGHIFAN NRC IOCFR21 NOTIFICATION OC:RTIFIEO1 ISO 9001 875
Dearborn Drive,
Columbus, Ohio 43085 .11.1 1-800-635-7300 - (61 4) 846-7500 - FAX (614) 885-3990 11EIL A member of The Marmon Group of companies
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 G. 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, the 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, separate from its hub.
2
Attachment A EFFECT ON SYSTEM PERFORMANCE: Fan Assembly - 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 component resulted from a problem reported by First Energy - Toledo Edison - Davis Bessie Plant in a non safety application,with subsequent verification of the problem as reported, and detailed investigation on 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 SCI Uninterruptible 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
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 individual blade wings are not obviously distorted or bent and are of visually equal distance from the cage rings/fibs.
IF THE BLADE IS LOOSE OR WOBBLES THE ENTIRE FAN ASSEMBLY SHOULD BE REPLACED.
4
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 - IOCFR21 Report.
Gentlemen:
According to our records your Plants recently purchased a system or replacement part for your Solidstate Controls Inverters, Chargers and/or Regulating Transformers. We have identified a potential problem with the Fan Blade part in that purchase. The same fan blade is used in both safety (lE) and non-safety equipment.
SCI Part Number: 80-900033-90 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 part(s). We request that you review your parts inventory and operating systems for the involved part.
Solidstate Controls will be providing replacement fan assemblies. If you have fan assemblies in use or in stock with a four-wing design, they are NOT affected. Only the fan assemblies with the aluminum, five-wing design are involved. Contact Ms. Sue Wampler 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 physically mounted on heat sinks are not involved with this notice.
Additionally, the US Nuclear Regulatory Commission is also being advised of this report.
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We regret the inconvenience this has caused 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 Representative)
Innsbrook Technical Center (2NW) 5000 Dominion Blvd.
Glen Allen, VA 23060 6
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 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.
ACTION REQUIRED: Solidstate Controls, Inc. is recommending that plant maintenance organizations inspect the fan blades in SCI Uninterruptible 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.
- 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, equal 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 receipt of this correspondence and at two-month intervals thereafter until your plant's scheduled preventive maintenance fan assembly change-out occurs.
7
Attachment B Fan change out can be accomplished either by arranging for a service technician to visit your site to perform the change out operation, or we will provide replacement fan assemblies and instructions for your maintenance personnel to replace the assemblies themselves.
Contact Ms. Sue Wampler 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 fan 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 THIS ACTION:
See Attachment C 8
Client Listing for Notification Attachment C Client NamelPlant Job No. Date Shipped PO No. Fan Part Number/System Quantity AEP - DC Cook B74006 10/23/1999 NU040000003428 20 80-570005-90 B72995 6/25/1999 NU04 0000001673 18 80-900033-90 C74539 3/8/2000 NU04-0000004951 12 System AECL C72921 3/30/2000 C39490 10 System AMEREN - UE- Callaway P73164 6/29/1999 780011-1825 1 80-570005-90 AMERICAN ELECTRIC, INC. S72157 4/8/1999 5541-2551 4 System ALA PWR - Farley B73062 8/6/1999 QP990549 18 80-900033-90 COMM ED. - Braidwood P72971 5/25/1999 491698 2 80-570005-90 P73378 7/26/1999 42J185 1 80-570005-90 COMM ED - Quad Cities S72825 7/19/1999 368002 10 System Dominion -North Anna B74831 3/24/2000 45036135 2 80-570005-90 B74831 5/2/2000 45036135 1 80-900033-90 B73154 2/15/2000 70005097 2 80-900033-90 Dominion - Surry B77626 6/7/2001 45078661 22 80-900033-90 B77811 10/25/2001 45082577 10 80-900033-90 DUKE - McGuire C72784 1/7/2000 MN51707 18 System S71951 4/30/1999 MN47563 12 System S73867 3/29/2000 MN56340 16 System B76393 11/27/2000 NE426 3 80-900033-90 Energy Northwest C75200 12/22/2000 306429 4 System C75203 12/22/2000 306422 16 System B7761 1 5/16/2001 308486 1 80-900033-90 ENTERGY - Grand Gulf P72963 5/28/1999 MP990500 3 80-570005-90 ENTERGY - Riverbend C77284 7/20/2001 RBY1 0631 15 System ENTERGY - Arkansas Nuc. B77552 4/3/2001 PQY1 0468 8 80-900033-90 One Ergytech B77199 5/8/2001 00-2-22604-CNH 5 80-570005-90 B74941 4/4/2000 45012709 1 80-900033-90 B78412 10/2/2001 45027436 1 80-900033-90 C73423 3/8/2000 18664 16 System FIRST ENERGY- Davis Besse P77393 3/7/2001 7055861 1 80-570005-90 S77420 12/28/2001 7053185 12 System FIRST ENERGY - Beaver R78169 10/18/2001 7064941 4 80-900033-90 Valley FLA PWR - Crystal River C71727 4/30/1999 F77311D 16 System C72400 8/6/1999 78768 4 System FP&L - St. Lucie P73980 10/19/1999 40836 2 80-570005-90 P74213 11/22/1999 41322 4 80-570005-90 P74297 12/10/1999 41663 2 80-570005-90 P75384 5/15/2000 45655 1 80-570005-90 FP&L - Turkey Pt. P74667 1/31/2000 unknown 1 80-570005-90 P74910 3/7/2000 S00559 00109 1 80-900033-90 P72251 2/18/1999 36259 2 80-900033-90 P72852 5/28/1999 37907 2 80-900033-90 P74044 11/11/1999 41008 2 80-900033-90 9
Client Listing for Notification Attachment C Client NamelPlant Job No. Date Shipped PO No. Fan Part Number/System Quantity P75211 6/15/2000 45073 2 80-900033-90 P75907 10/24/2000 46882 2 80-900033-90 ILLINOIS POWER - Clinton P73036 6/29/1999 566711 6 80-570005-90 F73860 11/24/1999 567693 6 80-570005-90 KEPCO - Koseal B75504 7/26/2000 CO0NYG4-0073-660 16 80-570005-90 P78024 6/6/2001 780013-463 1 80-570005-90 S75510 9/6/2000 COON KR-1 -D003-380 4 System NEB PUB PWR DIST - Cooper P74314 12/10/1999 992624 2 80-570005-90 NIAGARA MOHAWK P74858 2/29/2000 00-27879 1 80-570005-90 B78913 1/4/2002 01-37169 16 80-900033-90 F68041 10/30/2000 97-14883 12 80-570005-90 NY PWR ATHY - Indian Point 3 P74878 3/3/2000 4500019058 1 80-570005-90 OMAHA PUB PWR DIST F77549 5/31/2001 35292 8 80-570005-90 PP&L - Susquahana P75131 4/10/2000 0-11989-1 1 80-570005-90 P75178 4/17/2000 011976-1 5 80-570005-90 PG&E - Diablo Canyon B71934 1/29/1999 097669RMA4500680807 2 80-900033-90 B73280 8/25/1999 99897 2 80-900033-90 B75240 6/9/2000 103077 2 80-900033-90 B76672 1/30/2001 105438 4 80-900033-90 B78968 1/11/2002 108855 2 80-900033-90 RG&E - Ginna F77175 3/23/2001 5000003028 6 80-570005-90 SOUTHERN CALIF EDISON P76585 11/8/2000 142167-DIR-0377554 4 80-570005-90 P77210 2/15/2001 147615-SOL 4 80-570005-90 P77713 4/27/2001 151874-DIR-0392611 8 80-570005-90 SOUTHERN NUC-Vogtle P79465 1/29/2002 7052874/001 1 80-570005-90 S78282 10/24/2001 7050995 4 System TVA - Sequoyah B74248 12/8/1999 P-OONC8-259314-000 1 80-900033-90 C72143 8/31/1999 P-99N5F-246616-00 30 System TEXAS UTIL. - Comanche S75249 1/17/2001 320466 6D6 42 System Peak WIS PUB SVC - Kewaunee S76869 3/30/2001 268870 10 System Nuc 511 Total 10