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
U.S. Nuclear Regulatory Commission Operations Center Event Report General Information or Other (PAR)
Event#
38920 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" Page I 0511512002
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 I 0CFR2 I NOTIFICATION 180 gO0U'
.Z-,
A7
")e,:rborn Drive. ColumbuS. '.D(i-to 13r.)t,"
1 I'I"IIe n.-
-c,nnr.
ck
05/15/02 WED 15:07 FAX 6148853990 SOLIDSTATE CONTROLSS 2]002 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 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, ihe loose blade may cause a short circuit if it falls into the 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
a003 05/15/02 WED 15:08 FAX 6148853990 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 SOLIDSTATE CONTROLSS
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 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 oo04
[a 005 05/15/02 WED 15:08 FAX 6148853990 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 We rcgret the inconvenience this has cý.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 Representative)
Tnnsbrook Technical Center (2NVr) 5000 Dominion Blvd.
Glen Allen, VA 23060 6
SOLIDSTATE CONTROLSS
05/15/02 WED 15:09 FAX 6148853990 SOLIDSTATE CONTROLSS
[]007 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
05/15/02 WED 15:09 FAX 6148853990
[o 008 SOLIDSTATE CONTROLSS 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 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 TI--S ACTION:
St:e Attachment C 8
[a 009 "05/i5/02 WED 15:09 FAX 6148853990 Client Listing for Notification Attachment C Client NamelPlant Job No.
AEP - DC Cook B74006 B72995 C74539 AECL C72921 AMEREN - UE-Callaway P73164 AMERICAN ELECTRIC, INC.
S72157 ALA PWR - Farley B73062 COMM ED. - Braidwood P72971 P73378 COMM ED - Quad Cities S72825 Dominion -North Anna B74831 B74831 B73154 Dominion - Surry B77626 B77811 DUKE - McGuire C72784 S71951 S73867 B76393 Energy Northwest C75200 C75203 B77611 ENTERGY - Grand Gulf P72963 ENTERGY - Riverbend C77284 ENTERGY - Arkansas Nuc.
877552 One Ergytech-B77199 B74941 B78412 C73423 FIRST ENERGY-Davis Besse P77393 S77420 FIRST ENERGY - Beaver R78169 Valley FLA PWR - Crystal River C71727 C72400 FP&L - St. Lucie P73980 P74213 P74297 P75384 FP&L - Turkey Pt.
P74667 P74910 P72251 P72852 P74044 Date Shipped 10/23/1999 6/25/1999 3/812000 3/30/2000 6/29/1999 4/8/1999 816/1999 5125/1999 7/2611999 7/19/1999 3/24/2000 5/2/2000 2115/2000 6/7/2001 10/25/2001 1/7/2000 4/30/1999 3/29/2000 11/27/2000 12/22/2000 12/22/2000 5/16/2001 5/28/1999 7/2012001 4/3/2001 5/8/2001 4/4/2000 10/2/2001 3/8/2000 3/7/2001 12/2812001 10/18/2001 4/30/1999 8/6/1999 10/19/1999 11122/1999 12/10/1999 5/15/2000 1/31/2000 3/7/2000 2/18/1999 5/28/1999 11/11/1999 PO No.
NU040000003428 NU04 0000001673 NU04-00000049.51 C39490 780011-1825 5541-2551 QP990549 491698 42J185 368002 45036135 45036135 70005097 45078661 45082577 MN51707 MN47563 MNS6340 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 41'008 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
SOLIDSTATE CONTROLSS
[aO0O 05/15/02 WED 15:10 FAX 6148853990 Client Listing for Notification Attachment C Client Name/Plant ILLINOIS POWER - Clinton KEPCO - Koseal NEB PUB PWR DIST - Cooper NIAGARA MOHAWK NY PWR ATHY - Indian Point 1 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 Job No.
Date Shipped P75211 P75907 P73036 F73860 B75504 P78024 S75510 P74314 P74858 B78913 F68041 P74878 F77549 P75131 P75178 B71934 B73280 B75240 876672 878968 F77175 P76585 P77210 P77713 P79465 S78282 B74248 C72143 S75249 S76869 6115/2000 10/24/2000 6/29/1999 11/24/1999 7126/2000 616/2001 9/6/2000 12/10/1999 2/2912000 1/4/2002 10/3012000 3/3/2000 5/31(2001 411012000 4/17/2000 1/29/1999 8125/1999 6/912000 1130/2001 1111/2002 3/23/2001 11/8/2000 2/15/2001 4/2712001 112912002 10/24/2001 121811999 8131/1999 1/17/2001 3/30/2001 PO No.
45073 46882 566711 567693 COONYG4-0073-e60 780013-463 COON KR-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 7052874f001:.
7050995 P-OONC8-259314'000 P-99N5F-246616-00 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