ML16154A206
| ML16154A206 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah, Peach Bottom  |
| Issue date: | 05/18/2016 |
| From: | Sterbis T Nutherm International |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| Download: ML16154A206 (4) | |
Text
0511812016 U.S. Nuclear Regulatory Commission Operations Center Event Report Pagel Part 21 (PAR)
Event#
51938 Rep Org: NUTHERM INTERNATIONAL, INC Notification Date I Time: 05/17/2016 15:51 (EDT}
Supplier: NUTHERM INTERNATIONAL, INC.
Event Date I Time: 05/17/2016 (CDT)
Last Modification: 05/17/2016 Region: 3 Docket#:
City: MOUNT VERNON Agreement State:
Yes County:
License#:
State: IL NRC Notified by: THOMAS STERBIS Notifications: ANNE DeFRANCISCO R1DO HQ Ops Officer: KARL DIEDERICH GEORGE HOPPER R2DO Emergency Class: NON EMERGENCY PART 21/50.55 REACTORS EMAIL 10 CFR Section:
21 :21 (d)(3)(i)
DEFECTS AND NONCOMPLIANCE PART 21 REPORT - DEFECT IN A SIGNAL CONVERTER TRANSFORMER
--~-*
The following report was received from the manufacturer via fax:
Nutherm International, Inc. reported on a defect found in "Moore Industries SCT Signal Converter (Part Number SCT/4-20MN10-50MN117VAC/UB) based upon the failure analysis of a failed component. The conclusion was that the wire insulation in T2 transformer was damaged by the transformer manufacturing facility during assembly.
This damage reduced the insulation resistance and dielectric breakdown between the windings of the transformer. These damaged transformers were subsequently installed by Moore Industries into the signal converters. The failure of the transformer resulted in early, catastrophic failure of the signal converter.
"Moore Industries tested the transformers remaining in stock and found one (1) of the remaining two-hundred nineteen (219) transformers exhibited this condition. In all documented cases involving failure of this transformer, the impacted units had passed pre-installation functional testing but failed within four months after installation."
Affected nuclear power stations include: Peach Bottom Atomic Power Station and the Sequoyah Nuclear Station.
G 05/17/2016 12:51 PM 14154847068
-) 13018165151 Nutherm lnfelm~ Inc.
www.
com 601 South 11th Street Mount Vernon, IL 62864 Phone."fJfB-244-6000 Fex:618-2'""8tU1 May 17, 2016 Docwnent Control Desk U.S. Nuclear Regulatory Ccmmision Washington, DC 20555 Subject Notification uncb 10CFR21.21 (d) (3) (n) for Moore h:du&ries SCT Signal Converter Pursuant to l OCFR 21.21 (d) (3) (ii), Nuthenn International, Inc. is providing written notification of the identification of a potential defect fot.md in Moore Industries SCT Series Signal Converter.
The following information is required per 10CFR21.21 (d) ( 4)
L Name and address of the individual or individuals infonning the NRC.
Thomas A. Sterbis, President Nutherm International, Inc.
501South111h Street Mount V emon, Illinois 62864 ii.
Identification of the facility, the activity or the basic component supplied for such facility or such activity within the United States which fails to comply or contains a defect.
It bas been identified that Nutberm International, Inc has supplied SCT Series Signal Converters to the following facilities:
Exelon Generation Company, LLC - Peach Bottom Atomic Power Station Tennessee Valley Authority-Sequoyah Nuclear Station iii.
Identification of the fum constructing the facility or supplying the basic component which fails to comply or contains a defect Nutherm International, Inc., 501 South 11th Street Mount Vernon, Illinois 62864.
iv.
Nature of the defect or failure to comply and the safety hazard which is created or could be created by such defect or failure to comply.
Peach Bottom returned to Nuthenn a failed Moore Industries Signal Converter, Part Number SCT/4-20MA/l 0-SOMAJI l 7V AC/UB, for failure analysis. The conclusion of the failure analysis was that the wire insulation in T2 transformer was damaged by the transformer manufacturing facility during assembly. This damage reduced the insulation resistance and dielectric breakdown between the windings of the transformer. These damaged transformers were subsequently installed by Moore Industries into the signal converters. The failure of the transfonner resulted in early,
~ 05/17/2016 12:51 PM 14154847068 413018165151 Page2 May 17,2016 catastrophic failure of the signal converter.
Moore Industries tested the tmnsfonners remafu.ing in stock and found one (1) of the remaining two-hundred nineteen (219) transformers exhibited this condition. In all documented cases of failure due to failure of this ttansformer, the impacted units passed functional testing but failed within four months after installation.
It has been determined. that no visual inspection of the transfonner or testing after the transfonner is inst.alled will discover this defect. This defect can only be found by performing testing on the transfonner prior to installation.
- v.
The date on which the infonnation of such defect or failure to comply was obtained.
May 16, 2016.
vi.
In the case of a basic component which contains a defect or tailure to comply, the number and location of all such components in use at, supplied for one or more facilities or activities subject to the regulations of I OCFR21.
Exelon Generation Company, LLC-Peach Bottom Atomic Power Station Part Number: SCT/4-20MA/IO-SOMAJ117V AC/UB Purchase Order Nuthenn Traceability Number Serial No.
90 065122 13337-0lRO 1/01 2318694 Shipped March 6, 2014 Tennessee Valley Authority-Sequoyah Nuclear Station Part Number: SCT/10-50MAJ10-50MA/1l7V AC Purchase Order Nutherm Traceability Number 582226 13102-0lRl 1101 13102-0 lRl 1/02 13102-0lRl l/03 Shipped October 17, 2013 Serial No.
2299491 2299492 2299493 vii.
The corrective action which has been. is being or will be taken; the name of the individual or organization responsible for the action; and the length of time that has been or will be taken to complete the action.
02 The manufacturer has completed corrective actions to prevent installing any nonconfonning transformers into any signal converters. The transfonners are tested prior to installation to assure that they do not have this manufacturing defect All units manufactured after December 18, 2015 are manutBctured after implementation of this corrective action.
The impacted customeis were notified of this condition May 17, 2016.
(El 05/17/2016 12:51 PM 14154847068
~ 13018165151 Page3 May 17,2016 viii.
Any advice related to the defect or failure to comply about the :fucility, activity or basic component that bas been, is being or will be given to pmchasers or licensees.
Replacement of the mtlts listed above is suggested.
ix.
In the case of an early site permit, the entities to whom an early site permit was transferred.
Not applicable.
If you have any questions please contact Adrienne Smith at 618-244-6000, extension 3034, email adrienne.smith@nutherm.com or Rodger Edwards at 618-244-6000, extension 3050 email rodger.edwards@nutherm.com.
Sincerely, NUTHERM INTERNATIONAL, Inc.
Thomas A. Sterbis President TAS/abs D3
0511812016 U.S. Nuclear Regulatory Commission Operations Center Event Report Pagel Part 21 (PAR)
Event#
51938 Rep Org: NUTHERM INTERNATIONAL, INC Notification Date I Time: 05/17/2016 15:51 (EDT}
Supplier: NUTHERM INTERNATIONAL, INC.
Event Date I Time: 05/17/2016 (CDT)
Last Modification: 05/17/2016 Region: 3 Docket#:
City: MOUNT VERNON Agreement State:
Yes County:
License#:
State: IL NRC Notified by: THOMAS STERBIS Notifications: ANNE DeFRANCISCO R1DO HQ Ops Officer: KARL DIEDERICH GEORGE HOPPER R2DO Emergency Class: NON EMERGENCY PART 21/50.55 REACTORS EMAIL 10 CFR Section:
21 :21 (d)(3)(i)
DEFECTS AND NONCOMPLIANCE PART 21 REPORT - DEFECT IN A SIGNAL CONVERTER TRANSFORMER
--~-*
The following report was received from the manufacturer via fax:
Nutherm International, Inc. reported on a defect found in "Moore Industries SCT Signal Converter (Part Number SCT/4-20MN10-50MN117VAC/UB) based upon the failure analysis of a failed component. The conclusion was that the wire insulation in T2 transformer was damaged by the transformer manufacturing facility during assembly.
This damage reduced the insulation resistance and dielectric breakdown between the windings of the transformer. These damaged transformers were subsequently installed by Moore Industries into the signal converters. The failure of the transformer resulted in early, catastrophic failure of the signal converter.
"Moore Industries tested the transformers remaining in stock and found one (1) of the remaining two-hundred nineteen (219) transformers exhibited this condition. In all documented cases involving failure of this transformer, the impacted units had passed pre-installation functional testing but failed within four months after installation."
Affected nuclear power stations include: Peach Bottom Atomic Power Station and the Sequoyah Nuclear Station.
G 05/17/2016 12:51 PM 14154847068
-) 13018165151 Nutherm lnfelm~ Inc.
www.
com 601 South 11th Street Mount Vernon, IL 62864 Phone."fJfB-244-6000 Fex:618-2'""8tU1 May 17, 2016 Docwnent Control Desk U.S. Nuclear Regulatory Ccmmision Washington, DC 20555 Subject Notification uncb 10CFR21.21 (d) (3) (n) for Moore h:du&ries SCT Signal Converter Pursuant to l OCFR 21.21 (d) (3) (ii), Nuthenn International, Inc. is providing written notification of the identification of a potential defect fot.md in Moore Industries SCT Series Signal Converter.
The following information is required per 10CFR21.21 (d) ( 4)
L Name and address of the individual or individuals infonning the NRC.
Thomas A. Sterbis, President Nutherm International, Inc.
501South111h Street Mount V emon, Illinois 62864 ii.
Identification of the facility, the activity or the basic component supplied for such facility or such activity within the United States which fails to comply or contains a defect.
It bas been identified that Nutberm International, Inc has supplied SCT Series Signal Converters to the following facilities:
Exelon Generation Company, LLC - Peach Bottom Atomic Power Station Tennessee Valley Authority-Sequoyah Nuclear Station iii.
Identification of the fum constructing the facility or supplying the basic component which fails to comply or contains a defect Nutherm International, Inc., 501 South 11th Street Mount Vernon, Illinois 62864.
iv.
Nature of the defect or failure to comply and the safety hazard which is created or could be created by such defect or failure to comply.
Peach Bottom returned to Nuthenn a failed Moore Industries Signal Converter, Part Number SCT/4-20MA/l 0-SOMAJI l 7V AC/UB, for failure analysis. The conclusion of the failure analysis was that the wire insulation in T2 transformer was damaged by the transformer manufacturing facility during assembly. This damage reduced the insulation resistance and dielectric breakdown between the windings of the transformer. These damaged transformers were subsequently installed by Moore Industries into the signal converters. The failure of the transfonner resulted in early,
~ 05/17/2016 12:51 PM 14154847068 413018165151 Page2 May 17,2016 catastrophic failure of the signal converter.
Moore Industries tested the tmnsfonners remafu.ing in stock and found one (1) of the remaining two-hundred nineteen (219) transformers exhibited this condition. In all documented cases of failure due to failure of this ttansformer, the impacted units passed functional testing but failed within four months after installation.
It has been determined. that no visual inspection of the transfonner or testing after the transfonner is inst.alled will discover this defect. This defect can only be found by performing testing on the transfonner prior to installation.
- v.
The date on which the infonnation of such defect or failure to comply was obtained.
May 16, 2016.
vi.
In the case of a basic component which contains a defect or tailure to comply, the number and location of all such components in use at, supplied for one or more facilities or activities subject to the regulations of I OCFR21.
Exelon Generation Company, LLC-Peach Bottom Atomic Power Station Part Number: SCT/4-20MA/IO-SOMAJ117V AC/UB Purchase Order Nuthenn Traceability Number Serial No.
90 065122 13337-0lRO 1/01 2318694 Shipped March 6, 2014 Tennessee Valley Authority-Sequoyah Nuclear Station Part Number: SCT/10-50MAJ10-50MA/1l7V AC Purchase Order Nutherm Traceability Number 582226 13102-0lRl 1101 13102-0 lRl 1/02 13102-0lRl l/03 Shipped October 17, 2013 Serial No.
2299491 2299492 2299493 vii.
The corrective action which has been. is being or will be taken; the name of the individual or organization responsible for the action; and the length of time that has been or will be taken to complete the action.
02 The manufacturer has completed corrective actions to prevent installing any nonconfonning transformers into any signal converters. The transfonners are tested prior to installation to assure that they do not have this manufacturing defect All units manufactured after December 18, 2015 are manutBctured after implementation of this corrective action.
The impacted customeis were notified of this condition May 17, 2016.
(El 05/17/2016 12:51 PM 14154847068
~ 13018165151 Page3 May 17,2016 viii.
Any advice related to the defect or failure to comply about the :fucility, activity or basic component that bas been, is being or will be given to pmchasers or licensees.
Replacement of the mtlts listed above is suggested.
ix.
In the case of an early site permit, the entities to whom an early site permit was transferred.
Not applicable.
If you have any questions please contact Adrienne Smith at 618-244-6000, extension 3034, email adrienne.smith@nutherm.com or Rodger Edwards at 618-244-6000, extension 3050 email rodger.edwards@nutherm.com.
Sincerely, NUTHERM INTERNATIONAL, Inc.
Thomas A. Sterbis President TAS/abs D3