ML021550249
| ML021550249 | |
| 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 W Solidstate Controls |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| 10 CFR 21, 38920 | |
| Download: ML021550249 (11) | |
Text
0511512002 U.S. NuclearRegulatory Commission OperationsCenter Event Report Page I Event# 38920 General Information or Other (PAR)
Rep Org: SOLID STATE CONTROLS, INC Notification Date I Time: 05/15/2002 15:07 (EDT)
Supplier: SOLID STATE CONTROLS, INC Event Date I Time: 04/15/2002 (EDT)
Last Modification: 05/15/2002 Region: 3 Docket #:
City: COLUMBUS Agreement State: Yes County: License #:
State: OH NRC Notified by: W. G. HAMPTON (FAX) Notifications: RONALD GARDNER R3 HQ Ops Officer: MIKE NORRIS Emergency Class: NON EMERGENCY 10 CFR Section:
21.21 UNSPECIFIED PARAGRAPH 10 CFR 21 NOTIFICATION-POTENTIAL DEFECT INVOLVING FAN ASSEMBLIES FOR UPS SYSTEMS "The attached 10 CFR Part 21 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.
"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.
"EFFECT ON SYSTEM PERFORMANCE: Fan Assembly - THE SEPARATION 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.
"US NUCLEAR PLANT IMPACTED BY THIS ACTION: There are approximately 30 plants listed"
05/i5/02 WED 15:07 FAX 6148853990 SOLIDSTATE CONTROLSS 001 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 Commission Document Control Desk Washington, DC 20555
Subject:
10 CFR 2I NOTIFICATION -POTENTIAL DEFECT:INVOLVING FAN ASSEMBLIES USED IN FORCED AIR COOLED UNINTERRUPTIBLE POWER SUPPLY SYSTEMS The attachedl OCFR Part2I record, Attachment A, is submitted W 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 WGH/FAN NRC I0CFR2 I NOTIFICATION 180 gO0U'
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A7 ")e,:rborn Drive. ColumbuS. '.D(i-to 13r.)t,"
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WED 15:07 FAX 6148853990 SOLIDSTATE CONTROLSS 2]002 05/15/02 Attachment A May 10, 2002 10 CFR 21 NOTIFICATION -- POTENTIAL DEFECT INVOLVING FAN ASSEMBLIES USED IN FORCED AIR COOLED UNINTERRUPTIBLE POWER SUPPLY SYSTEMS I. Identification of the individual and firm informing the commission:
William &. 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 If aluminum, five-wing fan blade, which potentially could separate from the hub.
the blade should come loose there may not be an alarm indication of loss of the cooling. Additionally, ihe loose blade may cause a short circuit if it falls into equipment and should lInd 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
05/15/02 WED 15:08 FAX 6148853990 SOLIDSTATE CONTROLSS a003 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 s. defect affected a basic component 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 on April 15, 2002
- 6. Number and location of all ;uch components:
See # 2 above.
- 7. Corrective action that has be-enlis being taken:
a) Solidstate Controls has upgraded the fan blade from the aluminum, five-wing, one-piece design, to a pcior 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 partsior 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 sho~uld 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
05/15/02 WED 15:08 FAX 6148853990 SOLIDSTATE CONTROLSS oo04 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 iings/ribs.
IF THE BLADE IS LOOSE OR WOBBLES THE ENTIRE FAN ASSEMBLY SHEOULD BE REPLACED.
4
WED 15:08 FAX 6148853990 SOLIDSTATE CONTROLSS [a 005 05/15/02 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 - I OCFR21 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. We have identified a potential problem with the Fan Blade part in that purchase. The same fan blade is used in both safety (IE).and non-safety equipment.
SCI Part Number: 80-90003'.;-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 oper.ting 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-wAin 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 rubeaxial fans physically mounted on heat sinks are notiinvolved with this notice.
Additionally, the US Nuclear Regulatory Commission is also being advised cf this report.
5
SOLIDSTATE CONTROLSS U 006 05/15/02 WED 15:08 FAX 6148853990 contact Ms. Wampler We rcgret the inconvenience this has cý.used you. If you have any questions you may or the undersigned.
Sincerely, SOLDISTATE CONTROLS, INC.
W. G. Hampton Director, Quality Assurance CC: Mr. Conway Kehoe (NUPIC Representative)
Tnnsbrook Technical Center (2NVr) 5000 Dominion Blvd.
Glen Allen, VA 23060 6
WED 15:09 FAX 6148853990 SOLIDSTATE CONTROLSS []007 05/15/02 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 .-xposed electrically active parts.
CAUSE: We have determined that one fan blade style Itm one specific manufacturer of part number 03-470100-00 could, under ertain 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 cohtinuing 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 be*en 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 thatlhe following conditions ARE present.
- That all blade+/-s are secure on the hub, and
"* That no excessive vibration or out-of-balance :sitation is present, and
- That the individual blade wings are not obviously distorted/bent and visually, equ.:l distance from the cage rings.
IF THE BLADE IS LOOSE OR WOBBLES TIHE 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
SOLIDSTATE CONTROLSS [o 008 05/15/02 WED 15:09 FAX 6148853990 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 assembli.es and instmctions 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 fýn assemblies to SCI.
The assemblies should bt.- 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-wingi one-piece design, to a record prior proven, more robust two-piece, four-wing design, with an operating of no failures in excess of 10 years.
US NUCLEAR PLANTS IMPACTED BY TI--S ACTION:
St:e Attachment C 8
"05/i5/02 WED 15:09 FAX 6148853990 SOLIDSTATE CONTROLSS [a 009 Attachment C Client Listing for Notification Date Shipped PO No. Fan Part Number/System Client NamelPlant Job No. Quantity 10/23/1999 NU040000003428 20 80-570005-90 AEP - DC Cook B74006 18 80-900033-90 6/25/1999 NU04 0000001673 B72995 12 System 3/812000 NU04-00000049.51 C74539 10 System 3/30/2000 C39490 AECL C72921 1 80-570005-90 6/29/1999 780011-1825 AMEREN - UE- Callaway P73164 4 System 4/8/1999 5541-2551 AMERICAN ELECTRIC, INC. S72157 18 80-900033-90 816/1999 QP990549 ALA PWR - Farley B73062 2 80-570005-90 5125/1999 491698 COMM ED. - Braidwood P72971 1 80-570005-90 7/2611999 42J185 P73378 10 System 7/19/1999 368002 COMM ED - Quad Cities S72825 2 80-570005-90 3/24/2000 45036135 Dominion -North Anna B74831 1 80-900033-90 5/2/2000 45036135 B74831 2 80-900033-90 2115/2000 70005097 B73154 22 80-900033-90 6/7/2001 45078661 Dominion - Surry B77626 10 80-900033-90 10/25/2001 45082577 B77811 18 System 1/7/2000 MN51707 DUKE - McGuire C72784 12 System 4/30/1999 MN47563 S71951 16 System 3/29/2000 MNS6340 S73867 3 80-900033-90 11/27/2000 NE426 B76393 4 System 12/22/2000 306429 Energy Northwest C75200 16 System 12/22/2000 306422 C75203 1 80-900033-90 5/16/2001 308486 B77611 3 80-570005-90 5/28/1999 MP990500 ENTERGY - Grand Gulf P72963 15 System 7/2012001 RBY10631 ENTERGY - Riverbend C77284 8 80-900033-90 4/3/2001 PQY10468 ENTERGY - Arkansas Nuc. 877552 One 5/8/2001 00-2-22604-CNH 80-570005-90 Ergytech- B77199 5 4/4/2000 45012709 1 80-900033-90 B74941 1 80-900033-90 10/2/2001 45027436 B78412 16 System 3/8/2000 18664 C73423 1 80-570005-90 3/7/2001 7055861 FIRST ENERGY- Davis Besse P77393 7053185 12 System S77420 12/2812001 10/18/2001 7064941 4 80-900033-90 FIRST ENERGY - Beaver R78169 Valley F77311D 16 System C71727 4/30/1999 FLA PWR - Crystal River 4 System 8/6/1999 78768 C72400 2 80-570005-90 10/19/1999 40836 FP&L - St. Lucie P73980 4 80-570005-90 11122/1999 41322 P74213 2 80-570005-90 12/10/1999 41663 P74297 1 80-570005-90 5/15/2000 45655 P75384 1 80-570005-90 1/31/2000 unknown FP&L - Turkey Pt. P74667 1 80-900033-90 3/7/2000 S00559 00109 P74910 2 80-900033-90 2/18/1999 36259 P72251 2 80-900033-90 5/28/1999 37907 P72852 2 80-900033-90 P74044 11/11/1999 41'008 9
05/15/02 WED 15:10 FAX 6148853990 SOLIDSTATE CONTROLSS [aO0O Attachment C Client Listing for Notification Job No. Date Shipped PO No. Fan Part Number/System Client Name/Plant Quantity 45073 2 80-900033-90 P75211 6115/2000 2 80-900033-90 10/24/2000 46882 P75907 6 80-570005-90 6/29/1999 566711 P73036 ILLINOIS POWER - Clinton 11/24/1999 567693 6 80-570005-90 F73860 16 80-570005-90 B75504 7126/2000 COONYG4-0073-e60 KEPCO - Koseal 780013-463 1 80-570005-90 P78024 616/2001 4 System S75510 9/6/2000 COON KR-1 -D003,380 992624 2 80-570005-90 P74314 12/10/1999 NEB PUB PWR DIST - Cooper 2/2912000 00-27879 1 80-570005-90 NIAGARA MOHAWK P74858 16 80-900033-90 1/4/2002 01-37169 B78913 12 80-570005-90 10/3012000 97-14883 F68041 1 80-570005-90 P74878 3/3/2000 4500019058 NY PWR ATHY - Indian Point 1 5/31(2001 35292 8 80-570005-90 F77549 OMAHA PUB PWR DIST 411012000 0-11989-1 1 80-570005-90 P75131 5 80-570005-90 PP&L - Susquahana 4/17/2000 011976-1 P75178 2 80-900033-90 B71934 1/29/1999 097669RMA4500680807 PG&E - Diablo Canyon 99897 2 80-900033-90 B73280 8125/1999 103077 2 80-900033-90 B75240 6/912000 105438 4 80-900033-90 876672 1130/2001 108855 2 80-900033-90 878968 1111/2002 5000003028 6 80-570005-90 F77175 3/23/2001 RG&E - Ginna 4 80-570005-90 P76585 11/8/2000 142167-DIR-0377554 SOUTHERN CALIF EDISON 2/15/2001 147615-SOL 4 80-570005-90 P77210 80-570005-90 151874-DIR-0392611 8 P77713 4/2712001 7052874f001:. 1 80-570005-90 P79465 112912002 SOUTHERN NUC-Vogtle 7050995 4 System S78282 10/24/2001 1 80-900033-90 B74248 121811999 P-OONC8-259314'000 TVA - Sequoyah P-99N5F-246616-00 30 System C72143 8131/1999 42 System S75249 1/17/2001 320466 6D6 TEXAS UTIL. - Comanche Peak 3/30/2001 268870 10 System WIS PUB SVC - Kewaunee S76869 Nuc 511 Total 10