ML16139A832: Difference between revisions
StriderTol (talk | contribs) (Created page by program invented by StriderTol) |
StriderTol (talk | contribs) (Created page by program invented by StriderTol) |
||
| (2 intermediate revisions by the same user not shown) | |||
| Line 16: | Line 16: | ||
=Text= | =Text= | ||
{{#Wiki_filter:0511312016 U.S. Nuclear Regulatory Commission Operations Center Event Report Pagel Part 21 (PAR) Event# 51923 Rep Org: AZZ -NUCLEAR LOGISTICS, INC. | {{#Wiki_filter:0511312016 U.S. Nuclear Regulatory Commission Operations Center Event Report Pagel Part 21 (PAR) Event# 51923 Rep Org: AZZ - NUCLEAR LOGISTICS, INC. Notification Date I Time: 05/12/2016 19:23 (EDT) | ||
Supplier: AZZ - NUCLEAR LOGISTICS, INC. Event Date I Time: 05/10/2016 (CDT) | |||
05/12/2016 Region: 4 Docket#: City: FORT WORTH Agreement State: Yes County: License#: | Last Modification: 05/12/2016 Region: 4 Docket#: | ||
State: TX NRC Notified by: TRACY BOLT Notifications: | City: FORT WORTH Agreement State: Yes County: License#: | ||
ART BURRITT HQ Ops Officer: VINCE KLCO JAMIE HEISSERER Emergency Class: NON EMERGENCY ERIC DUNCAN 10 CFR Section: VIVIAN CAMPBELL 21.21(d)(3)(i) | State: TX NRC Notified by: TRACY BOLT Notifications: ART BURRITT R1DO HQ Ops Officer: VINCE KLCO JAMIE HEISSERER R2DO Emergency Class: NON EMERGENCY ERIC DUNCAN R3DO 10 CFR Section: VIVIAN CAMPBELL R4DO 21.21(d)(3)(i) DEFECTS AND NONCOMPLIANCE . PART 21/50.55 REACTORS EMAIL PART 21 - INITIAL NOTIFICATION OF MASTERPACT BREAKER FAIL TO CLOSE The following information was a licensee received facsimile; "Pursuant to 10CFR21.21 (d)(3)(ii), AZZ/NLI is providing written notification of the identification of a potential defect or failure to comply. | ||
DEFECTS AND NONCOMPLIANCE . PART 21/50.55 REACTORS PART 21 -INITIAL NOTIFICATION OF MASTERPACT BREAKER FAIL TO CLOSE The following information was a licensee received facsimile; "Pursuant to | "On the basis of our evaluation, it has been determined that there is sufficient information to determine if the subject condition is left uncorrected could potentially create a Substantial Safety Hazard or could create a Technical Specification Safety Limit violation as it relates to the subject plant applications. The plants will need to evaluate their application to determine if the identified condition could have an impact to the plant operation. | ||
The plants will need to evaluate their application to determine if the identified condition could have an impact to the plant operation. "The following information is required per 10CFR 21.21(d)(4): | "The following information is required per 10CFR 21.21(d)(4): | ||
"(i) Name and address of the individual or individuals informing the Commission. | "(i) Name and address of the individual or individuals informing the Commission. | ||
Tracy Bolt, Director of Quality Assurance Nuclear Logistics, Inc. 7410 Pebble Drive Ft. Worth, TX 76118 "(ii) Identification of the facility, activity, or the basic component supplied for such facility or such activity within the United States which fails to comply or contains a defect. "Masterpact NT and NW style circuit breakers. -The failure of the breaker being ready to electrically close after being subjected to an 'Anti-Pump condition'. | Tracy Bolt, Director of Quality Assurance Nuclear Logistics, Inc. | ||
"££11 ...v 0511312016 U.S. Nuclear Regulatory Commission Operations Center Event Report Page 2 Note: The specific application where the failures have occurred is when the breaker is being utilized as a starter for closing into an inductive load like a fan motor. "(iii) Identification of the firm constructing or supplying the basic component which fails to comply or contains a defect. AZZ/ Nuclear Logistics Fort Worth, Texas 76118 "(iv) Nature of defect or failure to comply and the safety hazard which is created or could be created by such defect or failure to comply. "Possible | 7410 Pebble Drive Ft. Worth, TX 76118 | ||
'failure to close' condition of Masterpact breakers NT and NW style, that are being used with specific logic schemes that are subjected to 'anti-pump' conditions during normal operation. | "(ii) Identification of the facility, activity, or the basic component supplied for such facility or such activity within the United States which fails to comply or contains a defect. | ||
These breakers have a higher susceptibility to not return to the ready to close position after the close signal has been removed. "PSEG reported approximately 14 instances with different breakers in different cubicles where they initiated an electric close order, and the breakers failed to close. All of the 14 instances were in applications of being used to start an inductive load. "NLI inspected three of the breakers (all NWs) that were returned by PSEG and could not fully replicate the problem as described by the plant. NLI was only able to repeat the failure to close when performing an 'anti-pump' test. The failure to close was intermittent, but could be duplicated. | "Masterpact NT and NW style circuit breakers. | ||
When the anti-pump condition was not present, NLI could not duplicate a failure to close. Visual inspections of the tested breakers did not reveal any visible damage to the breaker linkages, latches, shunt close or shunt trip assemblies. "Schneider Electric (SE) performed testing of three Masterpact NW08 breakers (operated to beyond design life) and duplicated the fail to close condition as described by the plant. It was determined that a standing close signal with a trip/open signal applied is determined to be the root cause of the fail to close issue. The SE testing confirms that the presence of this condition can cause the breaker anti-pump latch to receive excessive forward pressure. | -The failure of the breaker being ready to electrically close after being subjected to an 'Anti-Pump condition'. | ||
When the nose of the latch impacts the close coil plunger, it will 'rock' up in the rear, catching on the top of the mechanism plate. Once the close voltage is removed, and the plunger retracts, the latch may or may not let go. If the latch does not release, then application of the close coil voltage will simply activate the close coil plunger and without the latch underneath the plunger, the breaker will not close. "PSEG performed extensive troubleshooting at the Hope Creek plant and discovered that all of the affected breakers were in ari anti-pump condition when the breakers failed to close. "(v) The date on which the information of such defect or failure to comply was obtained. "This revised notification is being submitted based on the information gathered on 5/10/2016 after additional testing, at the request of River Bend, was performed. | "££11 | ||
This additional testing was requested following the notification that was provided to the plants listed below, in the original issue of this letter in February 2016. "The evaluation of the condition was originally completed in September of 2012. The issue was originally determined at that time to not be a reportable condition' based on the breaker not containing a defect and the condition was believed to be attributed to the specific logic scheme at the plant. To date, this issue has only been reported to NLI from the following plants, PSEG Hope Creek and River Bend Station. No other plants have reported this specific fail to close condition. | ...v ;J~f- | ||
NLI was in direct communication with the plants when this issue was first being evaluated and the failure analysis were being conducted. | |||
The two affected plants were knowledgeable of the condition. | 0511312016 U.S. Nuclear Regulatory Commission Operations Center Event Report Page 2 Note: The specific application where the failures have occurred is when the breaker is being utilized as a starter for closing into an inductive load like a fan motor. | ||
"(vi) In the case of a basic component which contains a defect or fails to comply, the number and location of these components in use at, supplied for being supplied for, or may be supplied for, manufactured or being manufactured for one or more facilities or activities subject to the regulations In this part. "Plants which have been supplied the Masterpact circuit breakers. | "(iii) Identification of the firm constructing or supplying the basic component which fails to comply or contains a defect. | ||
0511312016 U.S. Nuclear Regulatory Commission Operations Center Event Report "PSEG Hope Creek -Issue Identified for NW style River Bend -Issue identified for NT style Callaway -This issue has not been identified however, the potential should be evaluated. | AZZ/ Nuclear Logistics Fort Worth, Texas 76118 | ||
St. Lucie -This issue has not been identified however. the potential should be evaluated. | "(iv) Nature of defect or failure to comply and the safety hazard which is created or could be created by such defect or failure to comply. | ||
Turkey Point -This issue has not been identified however, the potential should be evaluated. | "Possible 'failure to close' condition of Masterpact breakers NT and NW style, that are being used with specific logic schemes that are subjected to 'anti-pump' conditions during normal operation. These breakers have a higher susceptibility to not return to the ready to close position after the close signal has been removed. | ||
Beaver Valley -This issue has not been identified however, the potential should be evaluated. | "PSEG reported approximately 14 instances with different breakers in different cubicles where they initiated an electric close order, and the breakers failed to close. All of the 14 instances were in applications of being used to start an inductive load. | ||
Davis Besse -This issue has not been identified however, the potential should be evaluated. | "NLI inspected three of the breakers (all NWs) that were returned by PSEG and could not fully replicate the problem as described by the plant. NLI was only able to repeat the failure to close when performing an 'anti-pump' test. The failure to close was intermittent, but could be duplicated. When the anti-pump condition was not present, NLI could not duplicate a failure to close. Visual inspections of the tested breakers did not reveal any visible damage to the breaker linkages, latches, shunt close or shunt trip assemblies. | ||
Three Mile Island -This issue has not been identified however, the potential should be evaluated. | "Schneider Electric (SE) performed testing of three Masterpact NW08 breakers (operated to beyond design life) and duplicated the fail to close condition as described by the plant. It was determined that a standing close signal with a trip/open signal applied is determined to be the root cause of the fail to close issue. The SE testing confirms that the presence of this condition can cause the breaker anti-pump latch to receive excessive forward pressure. | ||
Calvert Cliffs -This issue has not been identified however, the potential should be evaluated. | When the nose of the latch impacts the close coil plunger, it will 'rock' up in the rear, catching on the top of the mechanism plate. Once the close voltage is removed, and the plunger retracts, the latch may or may not let go. If the latch does not release, then application of the close coil voltage will simply activate the close coil plunger and without the latch underneath the plunger, the breaker will not close. | ||
"PSEG performed extensive troubleshooting at the Hope Creek plant and discovered that all of the affected breakers were in ari anti-pump condition when the breakers failed to close. | |||
"(v) The date on which the information of such defect or failure to comply was obtained. | |||
"This revised notification is being submitted based on the information gathered on 5/10/2016 after additional testing, at the request of River Bend, was performed. This additional testing was requested following the notification that was provided to the plants listed below, in the original issue of this letter in February 2016. | |||
"The evaluation of the condition was originally completed in September of 2012. The issue was originally determined at that time to not be a reportable condition' based on the breaker not containing a defect and the condition was believed to be attributed to the specific logic scheme at the plant. To date, this issue has only been reported to NLI from the following plants, PSEG Hope Creek and River Bend Station. No other plants have reported this specific fail to close condition. NLI was in direct communication with the plants when this issue was first being evaluated and the failure analysis were being conducted. The two affected plants were knowledgeable of the condition. | |||
"(vi) In the case of a basic component which contains a defect or fails to comply, the number and location of these components in use at, supplied for being supplied for, or may be supplied for, manufactured or being manufactured for one or more facilities or activities subject to the regulations In this part. | |||
"Plants which have been supplied the Masterpact circuit breakers. | |||
0511312016 U.S. Nuclear Regulatory Commission Operations Center Event Report Page3 "PSEG Hope Creek - Issue Identified for NW style River Bend - Issue identified for NT style Callaway - This issue has not been identified however, the potential should be evaluated. | |||
St. Lucie - This issue has not been identified however. the potential should be evaluated. | |||
Turkey Point - This issue has not been identified however, the potential should be evaluated. | |||
Beaver Valley - This issue has not been identified however, the potential should be evaluated. | |||
Davis Besse - This issue has not been identified however, the potential should be evaluated. | |||
Three Mile Island - This issue has not been identified however, the potential should be evaluated. | |||
Calvert Cliffs - This issue has not been identified however, the potential should be evaluated. | |||
Hatch -This issue has not been identified however, the potential should be evaluated. | Hatch -This issue has not been identified however, the potential should be evaluated. | ||
STP -This issue has not been identified however, the potential should be evaluated. | STP - This issue has not been identified however, the potential should be evaluated. | ||
SONGS -This issue has not been identified however, the potential should be evaluated. | SONGS - This issue has not been identified however, the potential should be evaluated. | ||
KHNPUlchin | KHNPUlchin - This issue has not been identified however, the potential should be evaluated. | ||
-This issue has not been identified however, the potential should be evaluated. | KHNPKor i- This issue has not been identified however, the potential should be evaluated. | ||
KHNPKor i-This issue has not been identified however, the potential should be evaluated. | Duke Oconee - This issue has not been identified however, the potential should be evaluated. | ||
Duke Oconee -This issue has not been identified however, the potential should be evaluated. | Duke McGuire - Non-safety (not supplied by NU), This issue has not been identified. | ||
Duke McGuire -Non-safety (not supplied by NU), This issue has not been identified. | "(vii) The corrective action which bas 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. | ||
"(vii) The corrective action which bas 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. "NLI originally created a technical bulletin to address the issue and recommendations. | "NLI originally created a technical bulletin to address the issue and recommendations. However, since new information has been recently identified, NLI TB-12-007 will be revised, as the proposed solution will not reliably solve the problem for all postulated events. Upon completion of the revised technical bulletin, it will be re-submitted to the plants which have been supplied the Masterpact breakers from NLI. | ||
However, since new information has been recently identified, NLI TB-12-007 will be revised, as the proposed solution will not reliably solve the problem for all postulated events. Upon completion of the revised | "(viii) Any advice related to the defect or failure to comply about the facility, activity, or basic component that has been, is being, or will be given to purchasers or licens.ees. | ||
Evaluate the applications where the breakers may be potentially subjected to an Anti-Pump condition; where the close coil will be energized for an extended period of time. "The circuit breaker will continue to operate if this condition is present however there may need to be human interaction with the circuit breaker by manually pressing the trip/open button on the front of the circuit breaker to free the mechanism. "Please contact NLI with any questions or comments. | "NLI is currently working with the OEM of the circuit breaker to determine the permanent solution to correct the possible failure to close event after the breaker is subjected to an Anti-Pump condition. | ||
Sincerely, Tracy Bolt Director of Quality Assurance" * * | "Advice for plants with breakers currently installed: Evaluate the applications where the breakers may be potentially subjected to an Anti-Pump condition; where the close coil will be energized for an extended period of time. | ||
* UPDATE ON 5/13/16 AT 1153 FROM TRACY BOLT TO BETHANY CECERE "Added 4 additional plants that were inadvertently left off the list. | "The circuit breaker will continue to operate if this condition is present however there may need to be human interaction with the circuit breaker by manually pressing the trip/open button on the front of the circuit breaker to free the mechanism. | ||
Fort Calhoun -This issue has not been identified however, the potential should be evaluated. | "Please contact NLI with any questions or comments. | ||
Wolf Creek -This issue has not been identified however, the potential should be evaluated. | Sincerely, Tracy Bolt Director of Quality Assurance" | ||
Seabrook -This issue has not been identified however, the potential should be evaluated." Notified R1 DO (Burritt), R2DO (Heisserer), R3DO (Duncan), R4DO (Campbell), and Part 21 Group via email. | * * | ||
05/13/2016 10:50 c,fAX) | * UPDATE ON 5/13/16 AT 1153 FROM TRACY BOLT TO BETHANY CECERE *** | ||
"Added 4 additional plants that were inadvertently left off the list. | |||
"Browns Ferry - This issue has not been identified however, the potential should be evaluated. | |||
Fort Calhoun - This issue has not been identified however, the potential should be evaluated. | |||
Wolf Creek - This issue has not been identified however, the potential should be evaluated. | |||
Seabrook - This issue has not been identified however, the potential should be evaluated." | |||
Notified R1 DO (Burritt), R2DO (Heisserer), R3DO (Duncan), R4DO (Campbell), and Part 21 Group via email. | |||
05/13/2016 10:50 c,fAX) P.001/005 Date: 5/13/2016 iaAzz NL I' To: | |||
FAX (301) 816-5151 Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555 From: | |||
Tracy Bolt Director of Quality Assurance AZZINLI Nuclear Logistics 7410 Pebble Drive Fort Worth, Texas 76118 Total pages including this page: ......5~- | |||
==Subject:== | ==Subject:== | ||
Revision to Part 21 Report No: P2J .. Q2152016, Rev. 2 Update -Reference NRC Notification Event Number: 51923 Added 4 additional plants that were inadvertently left off the list on page 3 NUCLEAR LOGISTICS INC. | |||
Revision to Part 21 Report No: P2J ..Q2152016, Rev. 2 Update - Reference NRC Notification Event Number: 51923 Added 4 additional plants that were inadvertently left off the list on page 3 NUCLEAR LOGISTICS INC. www.az.z.com 7410 Pebble Drive | |||
* Fort Worth, Texas 76118 | * Fort Worth, Texas 76118 | ||
* 800.448.4124 Phone | * 800.448.4124 Phone | ||
* 817.590.0484 Fax 05113/2016 10:51 Date: May 13, 2016 To: US Nuclear Regulatory Commission Document Control Desk Washington, DC 20555-0001 Fax 301-816-5151 From: Tracy Bolt AZZ | * 817.590.0484 Fax | ||
05113/2016 10:51 P.002/005 NL I' Date: May 13, 2016 To: US Nuclear Regulatory Commission Document Control Desk Washington, DC 20555-0001 Fax 301-816-5151 From: Tracy Bolt AZZ NLI Director of Quality Assurance J | |||
Part 21 Report No: P21-02152016, Rev. 2 Update - Reference NRC Notification Event Number: 51923 | |||
==Subject:== | ==Subject:== | ||
Initial Notification of | Initial Notification of 10CFR Part 21 condition~ | ||
The plants will need to evaluate their application to determine if the identified condition could have an impact to the plant operation. | Masterpact Breaker Fail to Close Following anti-pump operation Pursuant to 10CFR 21.21 (d) (3) (ii), AZZJNLI is providing written notification of the identification of a potential defect or failure to comply. | ||
The following information is required per | On the basis of our evaluation~ it has been detennined that there is sufficient information to determine if the subject condition is left uncorrected could potentially create a Substantial Safety Hazard or could create a Technical Specification Safety Limit violation as it relates to the subject plant applications. The plants will need to evaluate their application to determine if the identified condition could have an impact to the plant operation. | ||
Tracy Bolt, Director of Quality Assurance Nuclear Logistics, Inc 7410 Pebble Drive Ft. Worth, TX 76118 (ii) Identification of the facility, activity, or the basic component supplied for such facility or such activity within the United States which fails to comply or contains a defect. Masterpact NT and NW style circuit breakers. | The following information is required per 10CFR 21.21 (d) (4). | ||
(i) Name and address of the individual or individuals informing the Commission. | |||
Tracy Bolt, Director of Quality Assurance Nuclear Logistics, Inc 7410 Pebble Drive Ft. Worth, TX 76118 (ii) Identification of the facility, activity, or the basic component supplied for such facility or such activity within the United States which fails to comply or contains a defect. | |||
Masterpact NT and NW style circuit breakers. | |||
* The failure of the breaker being ready to electrically close after being subjected to an "Anti-Pump condition". | * The failure of the breaker being ready to electrically close after being subjected to an "Anti-Pump condition". | ||
Note: The specific application where the failures have occurred is when the breaker is being utilized as a starter for closing into an inductive load like a fan motor. NUCLEAR LOGISTICS INC. | Note: The specific application where the failures have occurred is when the breaker is being utilized as a starter for closing into an inductive load like a fan motor. | ||
Page 1of4 NUCLEAR LOGISTICS INC. www.a.zz.com 7410 Pebble Drive | |||
* Fort Worth. Texes 76118 | * Fort Worth. Texes 76118 | ||
* 800.448.4124 Phone | * 800.448.4124 Phone | ||
* 8*17.590.0484 Fax 05/13/2016 10:51 (FAX) P.003/005 (iii) ldentific:ation of the firm constructing o .. supplying the basic component which fails to comply or contains a defect. AZZ [ Nuclear Logistics Fort Worth, Texas 76118 (iv) Nature of defect or failure to comply and the safety hazard which is created or could be created by such defect or failure to comply. Possible ''failure to close'9 condition of Masterpact breakers NT and NW style, that are being used with specific logic schemes that are subjected to "anti-pump" conditions during normal operation. | * 8*17.590.0484 Fax | ||
These breakers have a higher susceptibility to not return to the ready to close position after the close signal has been removed. PSEG reported approximately 14 instances with different breakers in different cubicles where they initiated an electric close order, and the breakers failed to close. All of the 14 instances were in applications of being used to start an inductive load. NLI inspected three of the breakers (all NWs) that were returned by PSEG and could not fully replicate the problem as described by the plant. NLI was only able to repeat the failure to close when performing an "anti-pump" test. The failure to close was intermittent, but could be duplicated. | |||
When the condition was not present, NLI could not duplicate a failure to close. Visual inspections of the tested breakers did not reveal any visible damage to the breaker linkages, latches, shunt close or shunt trip assemblies. | 05/13/2016 10:51 (FAX) P.003/005 (iii) ldentific:ation of the firm constructing o.. supplying the basic component which fails to comply or contains a defect. | ||
AZZ [Nuclear Logistics Fort Worth, Texas 76118 (iv) Nature of defect or failure to comply and the safety hazard which is created or could be created by such defect or failure to comply. | |||
Possible ''failure to close'9 condition of Masterpact breakers NT and NW style, that are being used with specific logic schemes that are subjected to "anti-pump" conditions during normal operation. These breakers have a higher susceptibility to not return to the ready to close position after the close signal has been removed. | |||
PSEG reported approximately 14 instances with different breakers in different cubicles where they initiated an electric close order, and the breakers failed to close. All of the 14 instances were in applications of being used to start an inductive load. | |||
NLI inspected three of the breakers (all NWs) that were returned by PSEG and could not fully replicate the problem as described by the plant. NLI was only able to repeat the failure to close when performing an "anti-pump" test. The failure to close was intermittent, but could be duplicated. When the anti~pump condition was not present, NLI could not duplicate a failure to close. Visual inspections of the tested breakers did not reveal any visible damage to the breaker linkages, latches, shunt close or shunt trip assemblies. | |||
Schneider Electric (SE) performed testing of three Masterpact NW08 breakers (operated to beyond design life) and duplicated the fail to close condition as described by the plant. It was determined that a standing close signal with a trip/open signal applied is determined to be the root cause of the fail to close issue. The SE testing confirms that the presence of this condition can cause the breaker anti-pump latch to receive excessive forward pressure. | Schneider Electric (SE) performed testing of three Masterpact NW08 breakers (operated to beyond design life) and duplicated the fail to close condition as described by the plant. It was determined that a standing close signal with a trip/open signal applied is determined to be the root cause of the fail to close issue. The SE testing confirms that the presence of this condition can cause the breaker anti-pump latch to receive excessive forward pressure. | ||
When the nose of the latch impacts the close coil plunger, it will ''rock., up in the rear, catching on the top of the mechanism plate. Once the close voltage is removed, and the plunger the latch may or may not let go. If the latch does not release, then application of the close coil voltage will simply activate the close coil plunger and without the latch underneath the plunger, the breaker will not close. PSEG performed extensive troubleshooting at the Hope Creek plant and discovered that all of the affected breakers were in an anti .. pwnp condition when the breakers failed to close. Page2 of4 05/13/2016 10:51 P.004/005 (v) The date on which the Information of such defect or failure to comply was obtained. | When the nose of the latch impacts the close coil plunger, it will ''rock., up in the rear, catching on the top of the mechanism plate. Once the close voltage is removed, and the plunger retracts~ the latch may or may not let go. If the latch does not release, then application of the close coil voltage will simply activate the close coil plunger and without the latch underneath the plunger, the breaker will not close. | ||
This revised notification is being submitted based on the infonnation gathered on 5/10/2016 after additional testing by the request Riverbend was performed. | PSEG performed extensive troubleshooting at the Hope Creek plant and discovered that all of the affected breakers were in an anti..pwnp condition when the breakers failed to close. | ||
This additional testing was requested following the notification that was provided to the plants listed below. in the original issue of this letter in February 2016. The evaluation of the condition was originally completed in September of 2012. The issue was originally detennined at that time to not be a reportable condition based on the breaker not containing a defect and the condition was believed to be attributed to the specific logic scheme at the plant. To date, this issue has only been reported to NLI from the following plants, PSEG Hope Creek and River Bend Station. No other plants have reported this specific fail to close condition. | Page2 of4 | ||
NU was in direct communication with the plants when this issue was first being evaluated and the failure analysis were being conducted. | |||
The two affected plants were knowledgeable of the condition. (vi) In the case of a basic component which contains a defect or fails to comply, the number and location of these components in use at, supplied for being supplied for, Ol' may be supplied for, manufactured or being manufactured for one or more facillties or activities subject to the regulations In this part. Plants which have been supplied the Masterpact circuit breakers. | 05/13/2016 10:51 P.004/005 (v) The date on which the Information of such defect or failure to comply was obtained. | ||
Plant Name Notes PSEG Hope Creek Issue Identified for NW stYle River Bend Issue identified for NT style Callawav This issue has not been identified however. the ootential should be evaluated. | This revised notification is being submitted based on the infonnation gathered on 5/10/2016 after additional testing by the request Riverbend was performed. This additional testing was requested following the notification that was provided to the plants listed below. in the original issue of this letter in February 2016. | ||
St. Lucie This issue has not been identified however, the potential should be evaluated. | The evaluation of the condition was originally completed in September of 2012. The issue was originally detennined at that time to not be a reportable condition based on the breaker not containing a defect and the condition was believed to be attributed to the specific logic scheme at the plant. To date, this issue has only been reported to NLI from the following plants, PSEG Hope Creek and River Bend Station. No other plants have reported this specific fail to close condition. NU was in direct communication with the plants when this issue was first being evaluated and the failure analysis were being conducted. The two affected plants were knowledgeable of the condition. | ||
Turkey Point This issue has not been identified however, the potential should be evaluated. | (vi) In the case of a basic component which contains a defect or fails to comply, the number and location of these components in use at, supplied for being supplied for, Ol' may be supplied for, manufactured or being manufactured for one or more facillties or activities subject to the regulations In this part. | ||
Beaver Valley This issue has not been identified however, the potential should be evaluated. | Plants which have been supplied the Masterpact circuit breakers. | ||
Davis Besse This issue has not been identified however, the ootential | Plant Name Notes PSEG Hope Creek Issue Identified for NW stYle River Bend Issue identified for NT style Callawav This issue has not been identified however. the ootential should be evaluated. | ||
*should be evaluated. | St. Lucie This issue has not been identified however, the potential should be evaluated. | ||
Three Mile Island This issue has not been identified however, the ootential should be evaluated. | Turkey Point This issue has not been identified however, the potential should be evaluated. | ||
Calvert Cliffs This issue has not been identified however, the potential should be evaluated. | Beaver Valley This issue has not been identified however, the potential should be evaluated. | ||
Hatch This issue has not been identified however, the potential should be evaluated. | Davis Besse This issue has not been identified however, the ootential *should be evaluated. | ||
STP This issue has not been identified however, the ootential should be evaluated. | Three Mile Island This issue has not been identified however, the ootential should be evaluated. | ||
SONGS 'rhis issue has not been identified however, the ootential should be evaluated. | Calvert Cliffs This issue has not been identified however, the potential should be evaluated. | ||
KHNPUlchin This issue has not been identified however, the ootentia.1 should be evaluated. | Hatch This issue has not been identified however, the potential should be evaluated. | ||
KHNPKori This issue has not been identified however, the notential should be evaluated. | STP This issue has not been identified however, the ootential should be evaluated. | ||
Duke Oconee This issue has not been identified however, the ootential should be evaluated. | SONGS 'rhis issue has not been identified however, the ootential should be evaluated. | ||
Duke McGuire Non.,.safety (not suoolied by NLI), This issue has not been identified. | KHNPUlchin This issue has not been identified however, the ootentia.1 should be evaluated. | ||
Browns Ferry This issue has not been identified however, the ootential should be evaluated. | KHNPKori This issue has not been identified however, the notential should be evaluated. | ||
:Fort Calhoun This issue has not been identified however, the potential should be evaluated. | Duke Oconee This issue has not been identified however, the ootential should be evaluated. | ||
Wolf Creek This issue has not been identified however, the ootential should be evaluated. | Duke McGuire Non.,.safety (not suoolied by NLI), This issue has not been identified. | ||
Seabrook This issue has not been identified however, the p0tential should be evaluated. | Browns Ferry This issue has not been identified however, the ootential should be evaluated. | ||
Page 3 of4 05/13/2016 10:52 (FAX) P.005/005 (vii) The corrective action which has beent 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. NLI originally created a technical bulletin to address the issue and recommendations. | :Fort Calhoun This issue has not been identified however, the potential should be evaluated. | ||
However, since new information has been recently identified, NLI TB-12-007 will be revised, as the proposed solution will not reliably solve the problem for all postulated events. Upon completion of the revised technical bulletin, it will be re-submitted to the plants which have been supplied the Masterpact breakers ftom NLI. (viii) Any advice related to the defect or failure to comply about the facility, activity, or basic component that bas been, ls being, or will be given to purchasers or licensees. | Wolf Creek This issue has not been identified however, the ootential should be evaluated. | ||
Seabrook This issue has not been identified however, the p0tential should be evaluated. | |||
Page 3 of4 | |||
05/13/2016 10:52 (FAX) P.005/005 (vii) The corrective action which has beent 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. | |||
NLI originally created a technical bulletin to address the issue and recommendations. However, since new information has been recently identified, NLI TB-12-007 will be revised, as the proposed solution will not reliably solve the problem for all postulated events. Upon completion of the revised technical bulletin, it will be re-submitted to the plants which have been supplied the Masterpact breakers ftom NLI. | |||
(viii) Any advice related to the defect or failure to comply about the facility, activity, or basic component that bas been, ls being, or will be given to purchasers or licensees. | |||
NLI is currently working with the OEM of the circuit breaker to determine the permanent solution to correct the possible failure to close event after the breaker is subjected to an Anti-Pump condition. | NLI is currently working with the OEM of the circuit breaker to determine the permanent solution to correct the possible failure to close event after the breaker is subjected to an Anti-Pump condition. | ||
Advice for plants with breakers currently installed: | Advice for plants with breakers currently installed: | ||
Evaluate the applications where the breakers may be potentially subjected to an Anti-Pump condition; where the close coil will be energized for an extended period of time. The circuit breaker will continue to operate if this condition is present however there may need to be human interaction with the circuit breaker by manually pressing the trip/open button on the front of the circuit breaker to free the Please contact NLI with any questions or comments. | Evaluate the applications where the breakers may be potentially subjected to an Anti-Pump condition; where the close coil will be energized for an extended period of time. | ||
Director of Quality Assurance Page 4 of4 0511312016 U.S. Nuclear Regulatory Commission Operations Center Event Report Pagel Part 21 (PAR) Event# 51923 Rep Org: AZZ -NUCLEAR LOGISTICS, INC. | The circuit breaker will continue to operate if this condition is present however there may need to be human interaction with the circuit breaker by manually pressing the trip/open button on the front of the circuit breaker to free the mechanis~. | ||
Please contact NLI with any questions or comments. | |||
05/12/2016 Region: 4 Docket#: City: FORT WORTH Agreement State: Yes County: License#: | s~~ | ||
State: TX NRC Notified by: TRACY BOLT Notifications: | ThwyBo~ | ||
ART BURRITT HQ Ops Officer: VINCE KLCO JAMIE HEISSERER Emergency Class: NON EMERGENCY ERIC DUNCAN 10 CFR Section: VIVIAN CAMPBELL 21.21(d)(3)(i) | Director of Quality Assurance Page 4 of4 | ||
DEFECTS AND NONCOMPLIANCE . PART 21/50.55 REACTORS PART 21 -INITIAL NOTIFICATION OF MASTERPACT BREAKER FAIL TO CLOSE The following information was a licensee received facsimile; "Pursuant to | |||
The plants will need to evaluate their application to determine if the identified condition could have an impact to the plant operation. "The following information is required per 10CFR 21.21(d)(4): | 0511312016 U.S. Nuclear Regulatory Commission Operations Center Event Report Pagel Part 21 (PAR) Event# 51923 Rep Org: AZZ - NUCLEAR LOGISTICS, INC. Notification Date I Time: 05/12/2016 19:23 (EDT) | ||
"(i) Name and address of the individual or individuals informing the Commission. | Supplier: AZZ - NUCLEAR LOGISTICS, INC. Event Date I Time: 05/10/2016 (CDT) | ||
Tracy Bolt, Director of Quality Assurance Nuclear Logistics, Inc. 7410 Pebble Drive Ft. Worth, TX 76118 "(ii) Identification of the facility, activity, or the basic component supplied for such facility or such activity within the United States which fails to comply or contains a defect. "Masterpact NT and NW style circuit breakers. -The failure of the breaker being ready to electrically close after being subjected to an 'Anti-Pump condition'. | Last Modification: 05/12/2016 Region: 4 Docket#: | ||
"££11 ...v 0511312016 U.S. Nuclear Regulatory Commission Operations Center Event Report Page 2 Note: The specific application where the failures have occurred is when the breaker is being utilized as a starter for closing into an inductive load like a fan motor. "(iii) Identification of the firm constructing or supplying the basic component which fails to comply or contains a defect. AZZ/ Nuclear Logistics Fort Worth, Texas 76118 "(iv) Nature of defect or failure to comply and the safety hazard which is created or could be created by such defect or failure to comply. "Possible | City: FORT WORTH Agreement State: Yes County: License#: | ||
'failure to close' condition of Masterpact breakers NT and NW style, that are being used with specific logic schemes that are subjected to 'anti-pump' conditions during normal operation. | State: TX NRC Notified by: TRACY BOLT Notifications: ART BURRITT R1DO HQ Ops Officer: VINCE KLCO JAMIE HEISSERER R2DO Emergency Class: NON EMERGENCY ERIC DUNCAN R3DO 10 CFR Section: VIVIAN CAMPBELL R4DO 21.21(d)(3)(i) DEFECTS AND NONCOMPLIANCE . PART 21/50.55 REACTORS EMAIL PART 21 - INITIAL NOTIFICATION OF MASTERPACT BREAKER FAIL TO CLOSE The following information was a licensee received facsimile; "Pursuant to 10CFR21.21 (d)(3)(ii), AZZ/NLI is providing written notification of the identification of a potential defect or failure to comply. | ||
These breakers have a higher susceptibility to not return to the ready to close position after the close signal has been removed. "PSEG reported approximately 14 instances with different breakers in different cubicles where they initiated an electric close order, and the breakers failed to close. All of the 14 instances were in applications of being used to start an inductive load. "NLI inspected three of the breakers (all NWs) that were returned by PSEG and could not fully replicate the problem as described by the plant. NLI was only able to repeat the failure to close when performing an 'anti-pump' test. The failure to close was intermittent, but could be duplicated. | "On the basis of our evaluation, it has been determined that there is sufficient information to determine if the subject condition is left uncorrected could potentially create a Substantial Safety Hazard or could create a Technical Specification Safety Limit violation as it relates to the subject plant applications. The plants will need to evaluate their application to determine if the identified condition could have an impact to the plant operation. | ||
When the anti-pump condition was not present, NLI could not duplicate a failure to close. Visual inspections of the tested breakers did not reveal any visible damage to the breaker linkages, latches, shunt close or shunt trip assemblies. "Schneider Electric (SE) performed testing of three Masterpact NW08 breakers (operated to beyond design life) and duplicated the fail to close condition as described by the plant. It was determined that a standing close signal with a trip/open signal applied is determined to be the root cause of the fail to close issue. The SE testing confirms that the presence of this condition can cause the breaker anti-pump latch to receive excessive forward pressure. | "The following information is required per 10CFR 21.21(d)(4): | ||
When the nose of the latch impacts the close coil plunger, it will 'rock' up in the rear, catching on the top of the mechanism plate. Once the close voltage is removed, and the plunger retracts, the latch may or may not let go. If the latch does not release, then application of the close coil voltage will simply activate the close coil plunger and without the latch underneath the plunger, the breaker will not close. "PSEG performed extensive troubleshooting at the Hope Creek plant and discovered that all of the affected breakers were in ari anti-pump condition when the breakers failed to close. "(v) The date on which the information of such defect or failure to comply was obtained. "This revised notification is being submitted based on the information gathered on 5/10/2016 after additional testing, at the request of River Bend, was performed. | "(i) Name and address of the individual or individuals informing the Commission. | ||
This additional testing was requested following the notification that was provided to the plants listed below, in the original issue of this letter in February 2016. "The evaluation of the condition was originally completed in September of 2012. The issue was originally determined at that time to not be a reportable condition' based on the breaker not containing a defect and the condition was believed to be attributed to the specific logic scheme at the plant. To date, this issue has only been reported to NLI from the following plants, PSEG Hope Creek and River Bend Station. No other plants have reported this specific fail to close condition. | Tracy Bolt, Director of Quality Assurance Nuclear Logistics, Inc. | ||
NLI was in direct communication with the plants when this issue was first being evaluated and the failure analysis were being conducted. | 7410 Pebble Drive Ft. Worth, TX 76118 | ||
The two affected plants were knowledgeable of the condition. | "(ii) Identification of the facility, activity, or the basic component supplied for such facility or such activity within the United States which fails to comply or contains a defect. | ||
"(vi) In the case of a basic component which contains a defect or fails to comply, the number and location of these components in use at, supplied for being supplied for, or may be supplied for, manufactured or being manufactured for one or more facilities or activities subject to the regulations In this part. "Plants which have been supplied the Masterpact circuit breakers. | "Masterpact NT and NW style circuit breakers. | ||
0511312016 U.S. Nuclear Regulatory Commission Operations Center Event Report "PSEG Hope Creek -Issue Identified for NW style River Bend -Issue identified for NT style Callaway -This issue has not been identified however, the potential should be evaluated. | -The failure of the breaker being ready to electrically close after being subjected to an 'Anti-Pump condition'. | ||
St. Lucie -This issue has not been identified however. the potential should be evaluated. | "££11 | ||
Turkey Point -This issue has not been identified however, the potential should be evaluated. | ...v ;J~f- | ||
Beaver Valley -This issue has not been identified however, the potential should be evaluated. | |||
Davis Besse -This issue has not been identified however, the potential should be evaluated. | 0511312016 U.S. Nuclear Regulatory Commission Operations Center Event Report Page 2 Note: The specific application where the failures have occurred is when the breaker is being utilized as a starter for closing into an inductive load like a fan motor. | ||
Three Mile Island -This issue has not been identified however, the potential should be evaluated. | "(iii) Identification of the firm constructing or supplying the basic component which fails to comply or contains a defect. | ||
Calvert Cliffs -This issue has not been identified however, the potential should be evaluated. | AZZ/ Nuclear Logistics Fort Worth, Texas 76118 | ||
"(iv) Nature of defect or failure to comply and the safety hazard which is created or could be created by such defect or failure to comply. | |||
"Possible 'failure to close' condition of Masterpact breakers NT and NW style, that are being used with specific logic schemes that are subjected to 'anti-pump' conditions during normal operation. These breakers have a higher susceptibility to not return to the ready to close position after the close signal has been removed. | |||
"PSEG reported approximately 14 instances with different breakers in different cubicles where they initiated an electric close order, and the breakers failed to close. All of the 14 instances were in applications of being used to start an inductive load. | |||
"NLI inspected three of the breakers (all NWs) that were returned by PSEG and could not fully replicate the problem as described by the plant. NLI was only able to repeat the failure to close when performing an 'anti-pump' test. The failure to close was intermittent, but could be duplicated. When the anti-pump condition was not present, NLI could not duplicate a failure to close. Visual inspections of the tested breakers did not reveal any visible damage to the breaker linkages, latches, shunt close or shunt trip assemblies. | |||
"Schneider Electric (SE) performed testing of three Masterpact NW08 breakers (operated to beyond design life) and duplicated the fail to close condition as described by the plant. It was determined that a standing close signal with a trip/open signal applied is determined to be the root cause of the fail to close issue. The SE testing confirms that the presence of this condition can cause the breaker anti-pump latch to receive excessive forward pressure. | |||
When the nose of the latch impacts the close coil plunger, it will 'rock' up in the rear, catching on the top of the mechanism plate. Once the close voltage is removed, and the plunger retracts, the latch may or may not let go. If the latch does not release, then application of the close coil voltage will simply activate the close coil plunger and without the latch underneath the plunger, the breaker will not close. | |||
"PSEG performed extensive troubleshooting at the Hope Creek plant and discovered that all of the affected breakers were in ari anti-pump condition when the breakers failed to close. | |||
"(v) The date on which the information of such defect or failure to comply was obtained. | |||
"This revised notification is being submitted based on the information gathered on 5/10/2016 after additional testing, at the request of River Bend, was performed. This additional testing was requested following the notification that was provided to the plants listed below, in the original issue of this letter in February 2016. | |||
"The evaluation of the condition was originally completed in September of 2012. The issue was originally determined at that time to not be a reportable condition' based on the breaker not containing a defect and the condition was believed to be attributed to the specific logic scheme at the plant. To date, this issue has only been reported to NLI from the following plants, PSEG Hope Creek and River Bend Station. No other plants have reported this specific fail to close condition. NLI was in direct communication with the plants when this issue was first being evaluated and the failure analysis were being conducted. The two affected plants were knowledgeable of the condition. | |||
"(vi) In the case of a basic component which contains a defect or fails to comply, the number and location of these components in use at, supplied for being supplied for, or may be supplied for, manufactured or being manufactured for one or more facilities or activities subject to the regulations In this part. | |||
"Plants which have been supplied the Masterpact circuit breakers. | |||
0511312016 U.S. Nuclear Regulatory Commission Operations Center Event Report Page3 "PSEG Hope Creek - Issue Identified for NW style River Bend - Issue identified for NT style Callaway - This issue has not been identified however, the potential should be evaluated. | |||
St. Lucie - This issue has not been identified however. the potential should be evaluated. | |||
Turkey Point - This issue has not been identified however, the potential should be evaluated. | |||
Beaver Valley - This issue has not been identified however, the potential should be evaluated. | |||
Davis Besse - This issue has not been identified however, the potential should be evaluated. | |||
Three Mile Island - This issue has not been identified however, the potential should be evaluated. | |||
Calvert Cliffs - This issue has not been identified however, the potential should be evaluated. | |||
Hatch -This issue has not been identified however, the potential should be evaluated. | Hatch -This issue has not been identified however, the potential should be evaluated. | ||
STP -This issue has not been identified however, the potential should be evaluated. | STP - This issue has not been identified however, the potential should be evaluated. | ||
SONGS -This issue has not been identified however, the potential should be evaluated. | SONGS - This issue has not been identified however, the potential should be evaluated. | ||
KHNPUlchin | KHNPUlchin - This issue has not been identified however, the potential should be evaluated. | ||
-This issue has not been identified however, the potential should be evaluated. | KHNPKor i- This issue has not been identified however, the potential should be evaluated. | ||
KHNPKor i-This issue has not been identified however, the potential should be evaluated. | Duke Oconee - This issue has not been identified however, the potential should be evaluated. | ||
Duke Oconee -This issue has not been identified however, the potential should be evaluated. | Duke McGuire - Non-safety (not supplied by NU), This issue has not been identified. | ||
Duke McGuire -Non-safety (not supplied by NU), This issue has not been identified. | "(vii) The corrective action which bas 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. | ||
"(vii) The corrective action which bas 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. "NLI originally created a technical bulletin to address the issue and recommendations. | "NLI originally created a technical bulletin to address the issue and recommendations. However, since new information has been recently identified, NLI TB-12-007 will be revised, as the proposed solution will not reliably solve the problem for all postulated events. Upon completion of the revised technical bulletin, it will be re-submitted to the plants which have been supplied the Masterpact breakers from NLI. | ||
However, since new information has been recently identified, NLI TB-12-007 will be revised, as the proposed solution will not reliably solve the problem for all postulated events. Upon completion of the revised | "(viii) Any advice related to the defect or failure to comply about the facility, activity, or basic component that has been, is being, or will be given to purchasers or licens.ees. | ||
Evaluate the applications where the breakers may be potentially subjected to an Anti-Pump condition; where the close coil will be energized for an extended period of time. "The circuit breaker will continue to operate if this condition is present however there may need to be human interaction with the circuit breaker by manually pressing the trip/open button on the front of the circuit breaker to free the mechanism. "Please contact NLI with any questions or comments. | "NLI is currently working with the OEM of the circuit breaker to determine the permanent solution to correct the possible failure to close event after the breaker is subjected to an Anti-Pump condition. | ||
Sincerely, Tracy Bolt Director of Quality Assurance" * * | "Advice for plants with breakers currently installed: Evaluate the applications where the breakers may be potentially subjected to an Anti-Pump condition; where the close coil will be energized for an extended period of time. | ||
* UPDATE ON 5/13/16 AT 1153 FROM TRACY BOLT TO BETHANY CECERE "Added 4 additional plants that were inadvertently left off the list. | "The circuit breaker will continue to operate if this condition is present however there may need to be human interaction with the circuit breaker by manually pressing the trip/open button on the front of the circuit breaker to free the mechanism. | ||
Fort Calhoun -This issue has not been identified however, the potential should be evaluated. | "Please contact NLI with any questions or comments. | ||
Wolf Creek -This issue has not been identified however, the potential should be evaluated. | Sincerely, Tracy Bolt Director of Quality Assurance" | ||
Seabrook -This issue has not been identified however, the potential should be evaluated." Notified R1 DO (Burritt), R2DO (Heisserer), R3DO (Duncan), R4DO (Campbell), and Part 21 Group via email. | * * | ||
05/13/2016 10:50 c,fAX) | * UPDATE ON 5/13/16 AT 1153 FROM TRACY BOLT TO BETHANY CECERE *** | ||
"Added 4 additional plants that were inadvertently left off the list. | |||
"Browns Ferry - This issue has not been identified however, the potential should be evaluated. | |||
Fort Calhoun - This issue has not been identified however, the potential should be evaluated. | |||
Wolf Creek - This issue has not been identified however, the potential should be evaluated. | |||
Seabrook - This issue has not been identified however, the potential should be evaluated." | |||
Notified R1 DO (Burritt), R2DO (Heisserer), R3DO (Duncan), R4DO (Campbell), and Part 21 Group via email. | |||
05/13/2016 10:50 c,fAX) P.001/005 Date: 5/13/2016 iaAzz NL I' To: | |||
FAX (301) 816-5151 Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555 From: | |||
Tracy Bolt Director of Quality Assurance AZZINLI Nuclear Logistics 7410 Pebble Drive Fort Worth, Texas 76118 Total pages including this page: ......5~- | |||
==Subject:== | ==Subject:== | ||
Revision to Part 21 Report No: P2J .. Q2152016, Rev. 2 Update -Reference NRC Notification Event Number: 51923 Added 4 additional plants that were inadvertently left off the list on page 3 NUCLEAR LOGISTICS INC. | |||
Revision to Part 21 Report No: P2J ..Q2152016, Rev. 2 Update - Reference NRC Notification Event Number: 51923 Added 4 additional plants that were inadvertently left off the list on page 3 NUCLEAR LOGISTICS INC. www.az.z.com 7410 Pebble Drive | |||
* Fort Worth, Texas 76118 | * Fort Worth, Texas 76118 | ||
* 800.448.4124 Phone | * 800.448.4124 Phone | ||
* 817.590.0484 Fax 05113/2016 10:51 Date: May 13, 2016 To: US Nuclear Regulatory Commission Document Control Desk Washington, DC 20555-0001 Fax 301-816-5151 From: Tracy Bolt AZZ | * 817.590.0484 Fax | ||
05113/2016 10:51 P.002/005 NL I' Date: May 13, 2016 To: US Nuclear Regulatory Commission Document Control Desk Washington, DC 20555-0001 Fax 301-816-5151 From: Tracy Bolt AZZ NLI Director of Quality Assurance J | |||
Part 21 Report No: P21-02152016, Rev. 2 Update - Reference NRC Notification Event Number: 51923 | |||
==Subject:== | ==Subject:== | ||
Initial Notification of | Initial Notification of 10CFR Part 21 condition~ | ||
The plants will need to evaluate their application to determine if the identified condition could have an impact to the plant operation. | Masterpact Breaker Fail to Close Following anti-pump operation Pursuant to 10CFR 21.21 (d) (3) (ii), AZZJNLI is providing written notification of the identification of a potential defect or failure to comply. | ||
The following information is required per | On the basis of our evaluation~ it has been detennined that there is sufficient information to determine if the subject condition is left uncorrected could potentially create a Substantial Safety Hazard or could create a Technical Specification Safety Limit violation as it relates to the subject plant applications. The plants will need to evaluate their application to determine if the identified condition could have an impact to the plant operation. | ||
Tracy Bolt, Director of Quality Assurance Nuclear Logistics, Inc 7410 Pebble Drive Ft. Worth, TX 76118 (ii) Identification of the facility, activity, or the basic component supplied for such facility or such activity within the United States which fails to comply or contains a defect. Masterpact NT and NW style circuit breakers. | The following information is required per 10CFR 21.21 (d) (4). | ||
(i) Name and address of the individual or individuals informing the Commission. | |||
Tracy Bolt, Director of Quality Assurance Nuclear Logistics, Inc 7410 Pebble Drive Ft. Worth, TX 76118 (ii) Identification of the facility, activity, or the basic component supplied for such facility or such activity within the United States which fails to comply or contains a defect. | |||
Masterpact NT and NW style circuit breakers. | |||
* The failure of the breaker being ready to electrically close after being subjected to an "Anti-Pump condition". | * The failure of the breaker being ready to electrically close after being subjected to an "Anti-Pump condition". | ||
Note: The specific application where the failures have occurred is when the breaker is being utilized as a starter for closing into an inductive load like a fan motor. NUCLEAR LOGISTICS INC. | Note: The specific application where the failures have occurred is when the breaker is being utilized as a starter for closing into an inductive load like a fan motor. | ||
Page 1of4 NUCLEAR LOGISTICS INC. www.a.zz.com 7410 Pebble Drive | |||
* Fort Worth. Texes 76118 | * Fort Worth. Texes 76118 | ||
* 800.448.4124 Phone | * 800.448.4124 Phone | ||
* 8*17.590.0484 Fax 05/13/2016 10:51 (FAX) P.003/005 (iii) ldentific:ation of the firm constructing o .. supplying the basic component which fails to comply or contains a defect. AZZ [ Nuclear Logistics Fort Worth, Texas 76118 (iv) Nature of defect or failure to comply and the safety hazard which is created or could be created by such defect or failure to comply. Possible ''failure to close'9 condition of Masterpact breakers NT and NW style, that are being used with specific logic schemes that are subjected to "anti-pump" conditions during normal operation. | * 8*17.590.0484 Fax | ||
These breakers have a higher susceptibility to not return to the ready to close position after the close signal has been removed. PSEG reported approximately 14 instances with different breakers in different cubicles where they initiated an electric close order, and the breakers failed to close. All of the 14 instances were in applications of being used to start an inductive load. NLI inspected three of the breakers (all NWs) that were returned by PSEG and could not fully replicate the problem as described by the plant. NLI was only able to repeat the failure to close when performing an "anti-pump" test. The failure to close was intermittent, but could be duplicated. | |||
When the condition was not present, NLI could not duplicate a failure to close. Visual inspections of the tested breakers did not reveal any visible damage to the breaker linkages, latches, shunt close or shunt trip assemblies. | 05/13/2016 10:51 (FAX) P.003/005 (iii) ldentific:ation of the firm constructing o.. supplying the basic component which fails to comply or contains a defect. | ||
AZZ [Nuclear Logistics Fort Worth, Texas 76118 (iv) Nature of defect or failure to comply and the safety hazard which is created or could be created by such defect or failure to comply. | |||
Possible ''failure to close'9 condition of Masterpact breakers NT and NW style, that are being used with specific logic schemes that are subjected to "anti-pump" conditions during normal operation. These breakers have a higher susceptibility to not return to the ready to close position after the close signal has been removed. | |||
PSEG reported approximately 14 instances with different breakers in different cubicles where they initiated an electric close order, and the breakers failed to close. All of the 14 instances were in applications of being used to start an inductive load. | |||
NLI inspected three of the breakers (all NWs) that were returned by PSEG and could not fully replicate the problem as described by the plant. NLI was only able to repeat the failure to close when performing an "anti-pump" test. The failure to close was intermittent, but could be duplicated. When the anti~pump condition was not present, NLI could not duplicate a failure to close. Visual inspections of the tested breakers did not reveal any visible damage to the breaker linkages, latches, shunt close or shunt trip assemblies. | |||
Schneider Electric (SE) performed testing of three Masterpact NW08 breakers (operated to beyond design life) and duplicated the fail to close condition as described by the plant. It was determined that a standing close signal with a trip/open signal applied is determined to be the root cause of the fail to close issue. The SE testing confirms that the presence of this condition can cause the breaker anti-pump latch to receive excessive forward pressure. | Schneider Electric (SE) performed testing of three Masterpact NW08 breakers (operated to beyond design life) and duplicated the fail to close condition as described by the plant. It was determined that a standing close signal with a trip/open signal applied is determined to be the root cause of the fail to close issue. The SE testing confirms that the presence of this condition can cause the breaker anti-pump latch to receive excessive forward pressure. | ||
When the nose of the latch impacts the close coil plunger, it will ''rock., up in the rear, catching on the top of the mechanism plate. Once the close voltage is removed, and the plunger the latch may or may not let go. If the latch does not release, then application of the close coil voltage will simply activate the close coil plunger and without the latch underneath the plunger, the breaker will not close. PSEG performed extensive troubleshooting at the Hope Creek plant and discovered that all of the affected breakers were in an anti .. pwnp condition when the breakers failed to close. Page2 of4 05/13/2016 10:51 P.004/005 (v) The date on which the Information of such defect or failure to comply was obtained. | When the nose of the latch impacts the close coil plunger, it will ''rock., up in the rear, catching on the top of the mechanism plate. Once the close voltage is removed, and the plunger retracts~ the latch may or may not let go. If the latch does not release, then application of the close coil voltage will simply activate the close coil plunger and without the latch underneath the plunger, the breaker will not close. | ||
This revised notification is being submitted based on the infonnation gathered on 5/10/2016 after additional testing by the request Riverbend was performed. | PSEG performed extensive troubleshooting at the Hope Creek plant and discovered that all of the affected breakers were in an anti..pwnp condition when the breakers failed to close. | ||
This additional testing was requested following the notification that was provided to the plants listed below. in the original issue of this letter in February 2016. The evaluation of the condition was originally completed in September of 2012. The issue was originally detennined at that time to not be a reportable condition based on the breaker not containing a defect and the condition was believed to be attributed to the specific logic scheme at the plant. To date, this issue has only been reported to NLI from the following plants, PSEG Hope Creek and River Bend Station. No other plants have reported this specific fail to close condition. | Page2 of4 | ||
NU was in direct communication with the plants when this issue was first being evaluated and the failure analysis were being conducted. | |||
The two affected plants were knowledgeable of the condition. (vi) In the case of a basic component which contains a defect or fails to comply, the number and location of these components in use at, supplied for being supplied for, Ol' may be supplied for, manufactured or being manufactured for one or more facillties or activities subject to the regulations In this part. Plants which have been supplied the Masterpact circuit breakers. | 05/13/2016 10:51 P.004/005 (v) The date on which the Information of such defect or failure to comply was obtained. | ||
Plant Name Notes PSEG Hope Creek Issue Identified for NW stYle River Bend Issue identified for NT style Callawav This issue has not been identified however. the ootential should be evaluated. | This revised notification is being submitted based on the infonnation gathered on 5/10/2016 after additional testing by the request Riverbend was performed. This additional testing was requested following the notification that was provided to the plants listed below. in the original issue of this letter in February 2016. | ||
St. Lucie This issue has not been identified however, the potential should be evaluated. | The evaluation of the condition was originally completed in September of 2012. The issue was originally detennined at that time to not be a reportable condition based on the breaker not containing a defect and the condition was believed to be attributed to the specific logic scheme at the plant. To date, this issue has only been reported to NLI from the following plants, PSEG Hope Creek and River Bend Station. No other plants have reported this specific fail to close condition. NU was in direct communication with the plants when this issue was first being evaluated and the failure analysis were being conducted. The two affected plants were knowledgeable of the condition. | ||
Turkey Point This issue has not been identified however, the potential should be evaluated. | (vi) In the case of a basic component which contains a defect or fails to comply, the number and location of these components in use at, supplied for being supplied for, Ol' may be supplied for, manufactured or being manufactured for one or more facillties or activities subject to the regulations In this part. | ||
Beaver Valley This issue has not been identified however, the potential should be evaluated. | Plants which have been supplied the Masterpact circuit breakers. | ||
Davis Besse This issue has not been identified however, the ootential | Plant Name Notes PSEG Hope Creek Issue Identified for NW stYle River Bend Issue identified for NT style Callawav This issue has not been identified however. the ootential should be evaluated. | ||
*should be evaluated. | St. Lucie This issue has not been identified however, the potential should be evaluated. | ||
Three Mile Island This issue has not been identified however, the ootential should be evaluated. | Turkey Point This issue has not been identified however, the potential should be evaluated. | ||
Calvert Cliffs This issue has not been identified however, the potential should be evaluated. | Beaver Valley This issue has not been identified however, the potential should be evaluated. | ||
Hatch This issue has not been identified however, the potential should be evaluated. | Davis Besse This issue has not been identified however, the ootential *should be evaluated. | ||
STP This issue has not been identified however, the ootential should be evaluated. | Three Mile Island This issue has not been identified however, the ootential should be evaluated. | ||
SONGS 'rhis issue has not been identified however, the ootential should be evaluated. | Calvert Cliffs This issue has not been identified however, the potential should be evaluated. | ||
KHNPUlchin This issue has not been identified however, the ootentia.1 should be evaluated. | Hatch This issue has not been identified however, the potential should be evaluated. | ||
KHNPKori This issue has not been identified however, the notential should be evaluated. | STP This issue has not been identified however, the ootential should be evaluated. | ||
Duke Oconee This issue has not been identified however, the ootential should be evaluated. | SONGS 'rhis issue has not been identified however, the ootential should be evaluated. | ||
Duke McGuire Non.,.safety (not suoolied by NLI), This issue has not been identified. | KHNPUlchin This issue has not been identified however, the ootentia.1 should be evaluated. | ||
Browns Ferry This issue has not been identified however, the ootential should be evaluated. | KHNPKori This issue has not been identified however, the notential should be evaluated. | ||
:Fort Calhoun This issue has not been identified however, the potential should be evaluated. | Duke Oconee This issue has not been identified however, the ootential should be evaluated. | ||
Wolf Creek This issue has not been identified however, the ootential should be evaluated. | Duke McGuire Non.,.safety (not suoolied by NLI), This issue has not been identified. | ||
Seabrook This issue has not been identified however, the p0tential should be evaluated. | Browns Ferry This issue has not been identified however, the ootential should be evaluated. | ||
Page 3 of4 05/13/2016 10:52 (FAX) P.005/005 (vii) The corrective action which has beent 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. NLI originally created a technical bulletin to address the issue and recommendations. | :Fort Calhoun This issue has not been identified however, the potential should be evaluated. | ||
However, since new information has been recently identified, NLI TB-12-007 will be revised, as the proposed solution will not reliably solve the problem for all postulated events. Upon completion of the revised technical bulletin, it will be re-submitted to the plants which have been supplied the Masterpact breakers ftom NLI. (viii) Any advice related to the defect or failure to comply about the facility, activity, or basic component that bas been, ls being, or will be given to purchasers or licensees. | Wolf Creek This issue has not been identified however, the ootential should be evaluated. | ||
Seabrook This issue has not been identified however, the p0tential should be evaluated. | |||
Page 3 of4 | |||
05/13/2016 10:52 (FAX) P.005/005 (vii) The corrective action which has beent 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. | |||
NLI originally created a technical bulletin to address the issue and recommendations. However, since new information has been recently identified, NLI TB-12-007 will be revised, as the proposed solution will not reliably solve the problem for all postulated events. Upon completion of the revised technical bulletin, it will be re-submitted to the plants which have been supplied the Masterpact breakers ftom NLI. | |||
(viii) Any advice related to the defect or failure to comply about the facility, activity, or basic component that bas been, ls being, or will be given to purchasers or licensees. | |||
NLI is currently working with the OEM of the circuit breaker to determine the permanent solution to correct the possible failure to close event after the breaker is subjected to an Anti-Pump condition. | NLI is currently working with the OEM of the circuit breaker to determine the permanent solution to correct the possible failure to close event after the breaker is subjected to an Anti-Pump condition. | ||
Advice for plants with breakers currently installed: | Advice for plants with breakers currently installed: | ||
Evaluate the applications where the breakers may be potentially subjected to an Anti-Pump condition; where the close coil will be energized for an extended period of time. The circuit breaker will continue to operate if this condition is present however there may need to be human interaction with the circuit breaker by manually pressing the trip/open button on the front of the circuit breaker to free the Please contact NLI with any questions or comments. | Evaluate the applications where the breakers may be potentially subjected to an Anti-Pump condition; where the close coil will be energized for an extended period of time. | ||
The circuit breaker will continue to operate if this condition is present however there may need to be human interaction with the circuit breaker by manually pressing the trip/open button on the front of the circuit breaker to free the mechanis~. | |||
Please contact NLI with any questions or comments. | |||
s~~ | |||
ThwyBo~ | |||
Director of Quality Assurance Page 4 of4}} | Director of Quality Assurance Page 4 of4}} | ||
Latest revision as of 03:20, 5 February 2020
| ML16139A832 | |
| Person / Time | |
|---|---|
| Site: | Beaver Valley, Hatch, Calvert Cliffs, Davis Besse, Oconee, Mcguire, Saint Lucie, Hope Creek, Three Mile Island, Turkey Point, River Bend, Callaway, South Texas, San Onofre, McGuire  |
| Issue date: | 05/13/2016 |
| From: | Bolt T AZZ Nuclear Logistics |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| 51923 | |
| Download: ML16139A832 (8) | |
Text
0511312016 U.S. Nuclear Regulatory Commission Operations Center Event Report Pagel Part 21 (PAR) Event# 51923 Rep Org: AZZ - NUCLEAR LOGISTICS, INC. Notification Date I Time: 05/12/2016 19:23 (EDT)
Supplier: AZZ - NUCLEAR LOGISTICS, INC. Event Date I Time: 05/10/2016 (CDT)
Last Modification: 05/12/2016 Region: 4 Docket#:
City: FORT WORTH Agreement State: Yes County: License#:
State: TX NRC Notified by: TRACY BOLT Notifications: ART BURRITT R1DO HQ Ops Officer: VINCE KLCO JAMIE HEISSERER R2DO Emergency Class: NON EMERGENCY ERIC DUNCAN R3DO 10 CFR Section: VIVIAN CAMPBELL R4DO 21.21(d)(3)(i) DEFECTS AND NONCOMPLIANCE . PART 21/50.55 REACTORS EMAIL PART 21 - INITIAL NOTIFICATION OF MASTERPACT BREAKER FAIL TO CLOSE The following information was a licensee received facsimile; "Pursuant to 10CFR21.21 (d)(3)(ii), AZZ/NLI is providing written notification of the identification of a potential defect or failure to comply.
"On the basis of our evaluation, it has been determined that there is sufficient information to determine if the subject condition is left uncorrected could potentially create a Substantial Safety Hazard or could create a Technical Specification Safety Limit violation as it relates to the subject plant applications. The plants will need to evaluate their application to determine if the identified condition could have an impact to the plant operation.
"The following information is required per 10CFR 21.21(d)(4):
"(i) Name and address of the individual or individuals informing the Commission.
Tracy Bolt, Director of Quality Assurance Nuclear Logistics, Inc.
7410 Pebble Drive Ft. Worth, TX 76118
"(ii) Identification of the facility, activity, or the basic component supplied for such facility or such activity within the United States which fails to comply or contains a defect.
"Masterpact NT and NW style circuit breakers.
-The failure of the breaker being ready to electrically close after being subjected to an 'Anti-Pump condition'.
"££11
...v ;J~f-
0511312016 U.S. Nuclear Regulatory Commission Operations Center Event Report Page 2 Note: The specific application where the failures have occurred is when the breaker is being utilized as a starter for closing into an inductive load like a fan motor.
"(iii) Identification of the firm constructing or supplying the basic component which fails to comply or contains a defect.
AZZ/ Nuclear Logistics Fort Worth, Texas 76118
"(iv) Nature of defect or failure to comply and the safety hazard which is created or could be created by such defect or failure to comply.
"Possible 'failure to close' condition of Masterpact breakers NT and NW style, that are being used with specific logic schemes that are subjected to 'anti-pump' conditions during normal operation. These breakers have a higher susceptibility to not return to the ready to close position after the close signal has been removed.
"PSEG reported approximately 14 instances with different breakers in different cubicles where they initiated an electric close order, and the breakers failed to close. All of the 14 instances were in applications of being used to start an inductive load.
"NLI inspected three of the breakers (all NWs) that were returned by PSEG and could not fully replicate the problem as described by the plant. NLI was only able to repeat the failure to close when performing an 'anti-pump' test. The failure to close was intermittent, but could be duplicated. When the anti-pump condition was not present, NLI could not duplicate a failure to close. Visual inspections of the tested breakers did not reveal any visible damage to the breaker linkages, latches, shunt close or shunt trip assemblies.
"Schneider Electric (SE) performed testing of three Masterpact NW08 breakers (operated to beyond design life) and duplicated the fail to close condition as described by the plant. It was determined that a standing close signal with a trip/open signal applied is determined to be the root cause of the fail to close issue. The SE testing confirms that the presence of this condition can cause the breaker anti-pump latch to receive excessive forward pressure.
When the nose of the latch impacts the close coil plunger, it will 'rock' up in the rear, catching on the top of the mechanism plate. Once the close voltage is removed, and the plunger retracts, the latch may or may not let go. If the latch does not release, then application of the close coil voltage will simply activate the close coil plunger and without the latch underneath the plunger, the breaker will not close.
"PSEG performed extensive troubleshooting at the Hope Creek plant and discovered that all of the affected breakers were in ari anti-pump condition when the breakers failed to close.
"(v) The date on which the information of such defect or failure to comply was obtained.
"This revised notification is being submitted based on the information gathered on 5/10/2016 after additional testing, at the request of River Bend, was performed. This additional testing was requested following the notification that was provided to the plants listed below, in the original issue of this letter in February 2016.
"The evaluation of the condition was originally completed in September of 2012. The issue was originally determined at that time to not be a reportable condition' based on the breaker not containing a defect and the condition was believed to be attributed to the specific logic scheme at the plant. To date, this issue has only been reported to NLI from the following plants, PSEG Hope Creek and River Bend Station. No other plants have reported this specific fail to close condition. NLI was in direct communication with the plants when this issue was first being evaluated and the failure analysis were being conducted. The two affected plants were knowledgeable of the condition.
"(vi) In the case of a basic component which contains a defect or fails to comply, the number and location of these components in use at, supplied for being supplied for, or may be supplied for, manufactured or being manufactured for one or more facilities or activities subject to the regulations In this part.
"Plants which have been supplied the Masterpact circuit breakers.
0511312016 U.S. Nuclear Regulatory Commission Operations Center Event Report Page3 "PSEG Hope Creek - Issue Identified for NW style River Bend - Issue identified for NT style Callaway - This issue has not been identified however, the potential should be evaluated.
St. Lucie - This issue has not been identified however. the potential should be evaluated.
Turkey Point - This issue has not been identified however, the potential should be evaluated.
Beaver Valley - This issue has not been identified however, the potential should be evaluated.
Davis Besse - This issue has not been identified however, the potential should be evaluated.
Three Mile Island - This issue has not been identified however, the potential should be evaluated.
Calvert Cliffs - This issue has not been identified however, the potential should be evaluated.
Hatch -This issue has not been identified however, the potential should be evaluated.
STP - This issue has not been identified however, the potential should be evaluated.
SONGS - This issue has not been identified however, the potential should be evaluated.
KHNPUlchin - This issue has not been identified however, the potential should be evaluated.
KHNPKor i- This issue has not been identified however, the potential should be evaluated.
Duke Oconee - This issue has not been identified however, the potential should be evaluated.
Duke McGuire - Non-safety (not supplied by NU), This issue has not been identified.
"(vii) The corrective action which bas 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.
"NLI originally created a technical bulletin to address the issue and recommendations. However, since new information has been recently identified, NLI TB-12-007 will be revised, as the proposed solution will not reliably solve the problem for all postulated events. Upon completion of the revised technical bulletin, it will be re-submitted to the plants which have been supplied the Masterpact breakers from NLI.
"(viii) Any advice related to the defect or failure to comply about the facility, activity, or basic component that has been, is being, or will be given to purchasers or licens.ees.
"NLI is currently working with the OEM of the circuit breaker to determine the permanent solution to correct the possible failure to close event after the breaker is subjected to an Anti-Pump condition.
"Advice for plants with breakers currently installed: Evaluate the applications where the breakers may be potentially subjected to an Anti-Pump condition; where the close coil will be energized for an extended period of time.
"The circuit breaker will continue to operate if this condition is present however there may need to be human interaction with the circuit breaker by manually pressing the trip/open button on the front of the circuit breaker to free the mechanism.
"Please contact NLI with any questions or comments.
Sincerely, Tracy Bolt Director of Quality Assurance"
- *
- UPDATE ON 5/13/16 AT 1153 FROM TRACY BOLT TO BETHANY CECERE ***
"Added 4 additional plants that were inadvertently left off the list.
"Browns Ferry - This issue has not been identified however, the potential should be evaluated.
Fort Calhoun - This issue has not been identified however, the potential should be evaluated.
Wolf Creek - This issue has not been identified however, the potential should be evaluated.
Seabrook - This issue has not been identified however, the potential should be evaluated."
Notified R1 DO (Burritt), R2DO (Heisserer), R3DO (Duncan), R4DO (Campbell), and Part 21 Group via email.
05/13/2016 10:50 c,fAX) P.001/005 Date: 5/13/2016 iaAzz NL I' To:
FAX (301) 816-5151 Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555 From:
Tracy Bolt Director of Quality Assurance AZZINLI Nuclear Logistics 7410 Pebble Drive Fort Worth, Texas 76118 Total pages including this page: ......5~-
Subject:
Revision to Part 21 Report No: P2J ..Q2152016, Rev. 2 Update - Reference NRC Notification Event Number: 51923 Added 4 additional plants that were inadvertently left off the list on page 3 NUCLEAR LOGISTICS INC. www.az.z.com 7410 Pebble Drive
- Fort Worth, Texas 76118
- 800.448.4124 Phone
- 817.590.0484 Fax
05113/2016 10:51 P.002/005 NL I' Date: May 13, 2016 To: US Nuclear Regulatory Commission Document Control Desk Washington, DC 20555-0001 Fax 301-816-5151 From: Tracy Bolt AZZ NLI Director of Quality Assurance J
Part 21 Report No: P21-02152016, Rev. 2 Update - Reference NRC Notification Event Number: 51923
Subject:
Initial Notification of 10CFR Part 21 condition~
Masterpact Breaker Fail to Close Following anti-pump operation Pursuant to 10CFR 21.21 (d) (3) (ii), AZZJNLI is providing written notification of the identification of a potential defect or failure to comply.
On the basis of our evaluation~ it has been detennined that there is sufficient information to determine if the subject condition is left uncorrected could potentially create a Substantial Safety Hazard or could create a Technical Specification Safety Limit violation as it relates to the subject plant applications. The plants will need to evaluate their application to determine if the identified condition could have an impact to the plant operation.
The following information is required per 10CFR 21.21 (d) (4).
(i) Name and address of the individual or individuals informing the Commission.
Tracy Bolt, Director of Quality Assurance Nuclear Logistics, Inc 7410 Pebble Drive Ft. Worth, TX 76118 (ii) Identification of the facility, activity, or the basic component supplied for such facility or such activity within the United States which fails to comply or contains a defect.
Masterpact NT and NW style circuit breakers.
- The failure of the breaker being ready to electrically close after being subjected to an "Anti-Pump condition".
Note: The specific application where the failures have occurred is when the breaker is being utilized as a starter for closing into an inductive load like a fan motor.
Page 1of4 NUCLEAR LOGISTICS INC. www.a.zz.com 7410 Pebble Drive
- Fort Worth. Texes 76118
- 800.448.4124 Phone
- 8*17.590.0484 Fax
05/13/2016 10:51 (FAX) P.003/005 (iii) ldentific:ation of the firm constructing o.. supplying the basic component which fails to comply or contains a defect.
AZZ [Nuclear Logistics Fort Worth, Texas 76118 (iv) Nature of defect or failure to comply and the safety hazard which is created or could be created by such defect or failure to comply.
Possible failure to close'9 condition of Masterpact breakers NT and NW style, that are being used with specific logic schemes that are subjected to "anti-pump" conditions during normal operation. These breakers have a higher susceptibility to not return to the ready to close position after the close signal has been removed.
PSEG reported approximately 14 instances with different breakers in different cubicles where they initiated an electric close order, and the breakers failed to close. All of the 14 instances were in applications of being used to start an inductive load.
NLI inspected three of the breakers (all NWs) that were returned by PSEG and could not fully replicate the problem as described by the plant. NLI was only able to repeat the failure to close when performing an "anti-pump" test. The failure to close was intermittent, but could be duplicated. When the anti~pump condition was not present, NLI could not duplicate a failure to close. Visual inspections of the tested breakers did not reveal any visible damage to the breaker linkages, latches, shunt close or shunt trip assemblies.
Schneider Electric (SE) performed testing of three Masterpact NW08 breakers (operated to beyond design life) and duplicated the fail to close condition as described by the plant. It was determined that a standing close signal with a trip/open signal applied is determined to be the root cause of the fail to close issue. The SE testing confirms that the presence of this condition can cause the breaker anti-pump latch to receive excessive forward pressure.
When the nose of the latch impacts the close coil plunger, it will rock., up in the rear, catching on the top of the mechanism plate. Once the close voltage is removed, and the plunger retracts~ the latch may or may not let go. If the latch does not release, then application of the close coil voltage will simply activate the close coil plunger and without the latch underneath the plunger, the breaker will not close.
PSEG performed extensive troubleshooting at the Hope Creek plant and discovered that all of the affected breakers were in an anti..pwnp condition when the breakers failed to close.
Page2 of4
05/13/2016 10:51 P.004/005 (v) The date on which the Information of such defect or failure to comply was obtained.
This revised notification is being submitted based on the infonnation gathered on 5/10/2016 after additional testing by the request Riverbend was performed. This additional testing was requested following the notification that was provided to the plants listed below. in the original issue of this letter in February 2016.
The evaluation of the condition was originally completed in September of 2012. The issue was originally detennined at that time to not be a reportable condition based on the breaker not containing a defect and the condition was believed to be attributed to the specific logic scheme at the plant. To date, this issue has only been reported to NLI from the following plants, PSEG Hope Creek and River Bend Station. No other plants have reported this specific fail to close condition. NU was in direct communication with the plants when this issue was first being evaluated and the failure analysis were being conducted. The two affected plants were knowledgeable of the condition.
(vi) In the case of a basic component which contains a defect or fails to comply, the number and location of these components in use at, supplied for being supplied for, Ol' may be supplied for, manufactured or being manufactured for one or more facillties or activities subject to the regulations In this part.
Plants which have been supplied the Masterpact circuit breakers.
Plant Name Notes PSEG Hope Creek Issue Identified for NW stYle River Bend Issue identified for NT style Callawav This issue has not been identified however. the ootential should be evaluated.
St. Lucie This issue has not been identified however, the potential should be evaluated.
Turkey Point This issue has not been identified however, the potential should be evaluated.
Beaver Valley This issue has not been identified however, the potential should be evaluated.
Davis Besse This issue has not been identified however, the ootential *should be evaluated.
Three Mile Island This issue has not been identified however, the ootential should be evaluated.
Calvert Cliffs This issue has not been identified however, the potential should be evaluated.
Hatch This issue has not been identified however, the potential should be evaluated.
STP This issue has not been identified however, the ootential should be evaluated.
SONGS 'rhis issue has not been identified however, the ootential should be evaluated.
KHNPUlchin This issue has not been identified however, the ootentia.1 should be evaluated.
KHNPKori This issue has not been identified however, the notential should be evaluated.
Duke Oconee This issue has not been identified however, the ootential should be evaluated.
Duke McGuire Non.,.safety (not suoolied by NLI), This issue has not been identified.
Browns Ferry This issue has not been identified however, the ootential should be evaluated.
- Fort Calhoun This issue has not been identified however, the potential should be evaluated.
Wolf Creek This issue has not been identified however, the ootential should be evaluated.
Seabrook This issue has not been identified however, the p0tential should be evaluated.
Page 3 of4
05/13/2016 10:52 (FAX) P.005/005 (vii) The corrective action which has beent 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.
NLI originally created a technical bulletin to address the issue and recommendations. However, since new information has been recently identified, NLI TB-12-007 will be revised, as the proposed solution will not reliably solve the problem for all postulated events. Upon completion of the revised technical bulletin, it will be re-submitted to the plants which have been supplied the Masterpact breakers ftom NLI.
(viii) Any advice related to the defect or failure to comply about the facility, activity, or basic component that bas been, ls being, or will be given to purchasers or licensees.
NLI is currently working with the OEM of the circuit breaker to determine the permanent solution to correct the possible failure to close event after the breaker is subjected to an Anti-Pump condition.
Advice for plants with breakers currently installed:
Evaluate the applications where the breakers may be potentially subjected to an Anti-Pump condition; where the close coil will be energized for an extended period of time.
The circuit breaker will continue to operate if this condition is present however there may need to be human interaction with the circuit breaker by manually pressing the trip/open button on the front of the circuit breaker to free the mechanis~.
Please contact NLI with any questions or comments.
s~~
ThwyBo~
Director of Quality Assurance Page 4 of4
0511312016 U.S. Nuclear Regulatory Commission Operations Center Event Report Pagel Part 21 (PAR) Event# 51923 Rep Org: AZZ - NUCLEAR LOGISTICS, INC. Notification Date I Time: 05/12/2016 19:23 (EDT)
Supplier: AZZ - NUCLEAR LOGISTICS, INC. Event Date I Time: 05/10/2016 (CDT)
Last Modification: 05/12/2016 Region: 4 Docket#:
City: FORT WORTH Agreement State: Yes County: License#:
State: TX NRC Notified by: TRACY BOLT Notifications: ART BURRITT R1DO HQ Ops Officer: VINCE KLCO JAMIE HEISSERER R2DO Emergency Class: NON EMERGENCY ERIC DUNCAN R3DO 10 CFR Section: VIVIAN CAMPBELL R4DO 21.21(d)(3)(i) DEFECTS AND NONCOMPLIANCE . PART 21/50.55 REACTORS EMAIL PART 21 - INITIAL NOTIFICATION OF MASTERPACT BREAKER FAIL TO CLOSE The following information was a licensee received facsimile; "Pursuant to 10CFR21.21 (d)(3)(ii), AZZ/NLI is providing written notification of the identification of a potential defect or failure to comply.
"On the basis of our evaluation, it has been determined that there is sufficient information to determine if the subject condition is left uncorrected could potentially create a Substantial Safety Hazard or could create a Technical Specification Safety Limit violation as it relates to the subject plant applications. The plants will need to evaluate their application to determine if the identified condition could have an impact to the plant operation.
"The following information is required per 10CFR 21.21(d)(4):
"(i) Name and address of the individual or individuals informing the Commission.
Tracy Bolt, Director of Quality Assurance Nuclear Logistics, Inc.
7410 Pebble Drive Ft. Worth, TX 76118
"(ii) Identification of the facility, activity, or the basic component supplied for such facility or such activity within the United States which fails to comply or contains a defect.
"Masterpact NT and NW style circuit breakers.
-The failure of the breaker being ready to electrically close after being subjected to an 'Anti-Pump condition'.
"££11
...v ;J~f-
0511312016 U.S. Nuclear Regulatory Commission Operations Center Event Report Page 2 Note: The specific application where the failures have occurred is when the breaker is being utilized as a starter for closing into an inductive load like a fan motor.
"(iii) Identification of the firm constructing or supplying the basic component which fails to comply or contains a defect.
AZZ/ Nuclear Logistics Fort Worth, Texas 76118
"(iv) Nature of defect or failure to comply and the safety hazard which is created or could be created by such defect or failure to comply.
"Possible 'failure to close' condition of Masterpact breakers NT and NW style, that are being used with specific logic schemes that are subjected to 'anti-pump' conditions during normal operation. These breakers have a higher susceptibility to not return to the ready to close position after the close signal has been removed.
"PSEG reported approximately 14 instances with different breakers in different cubicles where they initiated an electric close order, and the breakers failed to close. All of the 14 instances were in applications of being used to start an inductive load.
"NLI inspected three of the breakers (all NWs) that were returned by PSEG and could not fully replicate the problem as described by the plant. NLI was only able to repeat the failure to close when performing an 'anti-pump' test. The failure to close was intermittent, but could be duplicated. When the anti-pump condition was not present, NLI could not duplicate a failure to close. Visual inspections of the tested breakers did not reveal any visible damage to the breaker linkages, latches, shunt close or shunt trip assemblies.
"Schneider Electric (SE) performed testing of three Masterpact NW08 breakers (operated to beyond design life) and duplicated the fail to close condition as described by the plant. It was determined that a standing close signal with a trip/open signal applied is determined to be the root cause of the fail to close issue. The SE testing confirms that the presence of this condition can cause the breaker anti-pump latch to receive excessive forward pressure.
When the nose of the latch impacts the close coil plunger, it will 'rock' up in the rear, catching on the top of the mechanism plate. Once the close voltage is removed, and the plunger retracts, the latch may or may not let go. If the latch does not release, then application of the close coil voltage will simply activate the close coil plunger and without the latch underneath the plunger, the breaker will not close.
"PSEG performed extensive troubleshooting at the Hope Creek plant and discovered that all of the affected breakers were in ari anti-pump condition when the breakers failed to close.
"(v) The date on which the information of such defect or failure to comply was obtained.
"This revised notification is being submitted based on the information gathered on 5/10/2016 after additional testing, at the request of River Bend, was performed. This additional testing was requested following the notification that was provided to the plants listed below, in the original issue of this letter in February 2016.
"The evaluation of the condition was originally completed in September of 2012. The issue was originally determined at that time to not be a reportable condition' based on the breaker not containing a defect and the condition was believed to be attributed to the specific logic scheme at the plant. To date, this issue has only been reported to NLI from the following plants, PSEG Hope Creek and River Bend Station. No other plants have reported this specific fail to close condition. NLI was in direct communication with the plants when this issue was first being evaluated and the failure analysis were being conducted. The two affected plants were knowledgeable of the condition.
"(vi) In the case of a basic component which contains a defect or fails to comply, the number and location of these components in use at, supplied for being supplied for, or may be supplied for, manufactured or being manufactured for one or more facilities or activities subject to the regulations In this part.
"Plants which have been supplied the Masterpact circuit breakers.
0511312016 U.S. Nuclear Regulatory Commission Operations Center Event Report Page3 "PSEG Hope Creek - Issue Identified for NW style River Bend - Issue identified for NT style Callaway - This issue has not been identified however, the potential should be evaluated.
St. Lucie - This issue has not been identified however. the potential should be evaluated.
Turkey Point - This issue has not been identified however, the potential should be evaluated.
Beaver Valley - This issue has not been identified however, the potential should be evaluated.
Davis Besse - This issue has not been identified however, the potential should be evaluated.
Three Mile Island - This issue has not been identified however, the potential should be evaluated.
Calvert Cliffs - This issue has not been identified however, the potential should be evaluated.
Hatch -This issue has not been identified however, the potential should be evaluated.
STP - This issue has not been identified however, the potential should be evaluated.
SONGS - This issue has not been identified however, the potential should be evaluated.
KHNPUlchin - This issue has not been identified however, the potential should be evaluated.
KHNPKor i- This issue has not been identified however, the potential should be evaluated.
Duke Oconee - This issue has not been identified however, the potential should be evaluated.
Duke McGuire - Non-safety (not supplied by NU), This issue has not been identified.
"(vii) The corrective action which bas 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.
"NLI originally created a technical bulletin to address the issue and recommendations. However, since new information has been recently identified, NLI TB-12-007 will be revised, as the proposed solution will not reliably solve the problem for all postulated events. Upon completion of the revised technical bulletin, it will be re-submitted to the plants which have been supplied the Masterpact breakers from NLI.
"(viii) Any advice related to the defect or failure to comply about the facility, activity, or basic component that has been, is being, or will be given to purchasers or licens.ees.
"NLI is currently working with the OEM of the circuit breaker to determine the permanent solution to correct the possible failure to close event after the breaker is subjected to an Anti-Pump condition.
"Advice for plants with breakers currently installed: Evaluate the applications where the breakers may be potentially subjected to an Anti-Pump condition; where the close coil will be energized for an extended period of time.
"The circuit breaker will continue to operate if this condition is present however there may need to be human interaction with the circuit breaker by manually pressing the trip/open button on the front of the circuit breaker to free the mechanism.
"Please contact NLI with any questions or comments.
Sincerely, Tracy Bolt Director of Quality Assurance"
- *
- UPDATE ON 5/13/16 AT 1153 FROM TRACY BOLT TO BETHANY CECERE ***
"Added 4 additional plants that were inadvertently left off the list.
"Browns Ferry - This issue has not been identified however, the potential should be evaluated.
Fort Calhoun - This issue has not been identified however, the potential should be evaluated.
Wolf Creek - This issue has not been identified however, the potential should be evaluated.
Seabrook - This issue has not been identified however, the potential should be evaluated."
Notified R1 DO (Burritt), R2DO (Heisserer), R3DO (Duncan), R4DO (Campbell), and Part 21 Group via email.
05/13/2016 10:50 c,fAX) P.001/005 Date: 5/13/2016 iaAzz NL I' To:
FAX (301) 816-5151 Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555 From:
Tracy Bolt Director of Quality Assurance AZZINLI Nuclear Logistics 7410 Pebble Drive Fort Worth, Texas 76118 Total pages including this page: ......5~-
Subject:
Revision to Part 21 Report No: P2J ..Q2152016, Rev. 2 Update - Reference NRC Notification Event Number: 51923 Added 4 additional plants that were inadvertently left off the list on page 3 NUCLEAR LOGISTICS INC. www.az.z.com 7410 Pebble Drive
- Fort Worth, Texas 76118
- 800.448.4124 Phone
- 817.590.0484 Fax
05113/2016 10:51 P.002/005 NL I' Date: May 13, 2016 To: US Nuclear Regulatory Commission Document Control Desk Washington, DC 20555-0001 Fax 301-816-5151 From: Tracy Bolt AZZ NLI Director of Quality Assurance J
Part 21 Report No: P21-02152016, Rev. 2 Update - Reference NRC Notification Event Number: 51923
Subject:
Initial Notification of 10CFR Part 21 condition~
Masterpact Breaker Fail to Close Following anti-pump operation Pursuant to 10CFR 21.21 (d) (3) (ii), AZZJNLI is providing written notification of the identification of a potential defect or failure to comply.
On the basis of our evaluation~ it has been detennined that there is sufficient information to determine if the subject condition is left uncorrected could potentially create a Substantial Safety Hazard or could create a Technical Specification Safety Limit violation as it relates to the subject plant applications. The plants will need to evaluate their application to determine if the identified condition could have an impact to the plant operation.
The following information is required per 10CFR 21.21 (d) (4).
(i) Name and address of the individual or individuals informing the Commission.
Tracy Bolt, Director of Quality Assurance Nuclear Logistics, Inc 7410 Pebble Drive Ft. Worth, TX 76118 (ii) Identification of the facility, activity, or the basic component supplied for such facility or such activity within the United States which fails to comply or contains a defect.
Masterpact NT and NW style circuit breakers.
- The failure of the breaker being ready to electrically close after being subjected to an "Anti-Pump condition".
Note: The specific application where the failures have occurred is when the breaker is being utilized as a starter for closing into an inductive load like a fan motor.
Page 1of4 NUCLEAR LOGISTICS INC. www.a.zz.com 7410 Pebble Drive
- Fort Worth. Texes 76118
- 800.448.4124 Phone
- 8*17.590.0484 Fax
05/13/2016 10:51 (FAX) P.003/005 (iii) ldentific:ation of the firm constructing o.. supplying the basic component which fails to comply or contains a defect.
AZZ [Nuclear Logistics Fort Worth, Texas 76118 (iv) Nature of defect or failure to comply and the safety hazard which is created or could be created by such defect or failure to comply.
Possible failure to close'9 condition of Masterpact breakers NT and NW style, that are being used with specific logic schemes that are subjected to "anti-pump" conditions during normal operation. These breakers have a higher susceptibility to not return to the ready to close position after the close signal has been removed.
PSEG reported approximately 14 instances with different breakers in different cubicles where they initiated an electric close order, and the breakers failed to close. All of the 14 instances were in applications of being used to start an inductive load.
NLI inspected three of the breakers (all NWs) that were returned by PSEG and could not fully replicate the problem as described by the plant. NLI was only able to repeat the failure to close when performing an "anti-pump" test. The failure to close was intermittent, but could be duplicated. When the anti~pump condition was not present, NLI could not duplicate a failure to close. Visual inspections of the tested breakers did not reveal any visible damage to the breaker linkages, latches, shunt close or shunt trip assemblies.
Schneider Electric (SE) performed testing of three Masterpact NW08 breakers (operated to beyond design life) and duplicated the fail to close condition as described by the plant. It was determined that a standing close signal with a trip/open signal applied is determined to be the root cause of the fail to close issue. The SE testing confirms that the presence of this condition can cause the breaker anti-pump latch to receive excessive forward pressure.
When the nose of the latch impacts the close coil plunger, it will rock., up in the rear, catching on the top of the mechanism plate. Once the close voltage is removed, and the plunger retracts~ the latch may or may not let go. If the latch does not release, then application of the close coil voltage will simply activate the close coil plunger and without the latch underneath the plunger, the breaker will not close.
PSEG performed extensive troubleshooting at the Hope Creek plant and discovered that all of the affected breakers were in an anti..pwnp condition when the breakers failed to close.
Page2 of4
05/13/2016 10:51 P.004/005 (v) The date on which the Information of such defect or failure to comply was obtained.
This revised notification is being submitted based on the infonnation gathered on 5/10/2016 after additional testing by the request Riverbend was performed. This additional testing was requested following the notification that was provided to the plants listed below. in the original issue of this letter in February 2016.
The evaluation of the condition was originally completed in September of 2012. The issue was originally detennined at that time to not be a reportable condition based on the breaker not containing a defect and the condition was believed to be attributed to the specific logic scheme at the plant. To date, this issue has only been reported to NLI from the following plants, PSEG Hope Creek and River Bend Station. No other plants have reported this specific fail to close condition. NU was in direct communication with the plants when this issue was first being evaluated and the failure analysis were being conducted. The two affected plants were knowledgeable of the condition.
(vi) In the case of a basic component which contains a defect or fails to comply, the number and location of these components in use at, supplied for being supplied for, Ol' may be supplied for, manufactured or being manufactured for one or more facillties or activities subject to the regulations In this part.
Plants which have been supplied the Masterpact circuit breakers.
Plant Name Notes PSEG Hope Creek Issue Identified for NW stYle River Bend Issue identified for NT style Callawav This issue has not been identified however. the ootential should be evaluated.
St. Lucie This issue has not been identified however, the potential should be evaluated.
Turkey Point This issue has not been identified however, the potential should be evaluated.
Beaver Valley This issue has not been identified however, the potential should be evaluated.
Davis Besse This issue has not been identified however, the ootential *should be evaluated.
Three Mile Island This issue has not been identified however, the ootential should be evaluated.
Calvert Cliffs This issue has not been identified however, the potential should be evaluated.
Hatch This issue has not been identified however, the potential should be evaluated.
STP This issue has not been identified however, the ootential should be evaluated.
SONGS 'rhis issue has not been identified however, the ootential should be evaluated.
KHNPUlchin This issue has not been identified however, the ootentia.1 should be evaluated.
KHNPKori This issue has not been identified however, the notential should be evaluated.
Duke Oconee This issue has not been identified however, the ootential should be evaluated.
Duke McGuire Non.,.safety (not suoolied by NLI), This issue has not been identified.
Browns Ferry This issue has not been identified however, the ootential should be evaluated.
- Fort Calhoun This issue has not been identified however, the potential should be evaluated.
Wolf Creek This issue has not been identified however, the ootential should be evaluated.
Seabrook This issue has not been identified however, the p0tential should be evaluated.
Page 3 of4
05/13/2016 10:52 (FAX) P.005/005 (vii) The corrective action which has beent 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.
NLI originally created a technical bulletin to address the issue and recommendations. However, since new information has been recently identified, NLI TB-12-007 will be revised, as the proposed solution will not reliably solve the problem for all postulated events. Upon completion of the revised technical bulletin, it will be re-submitted to the plants which have been supplied the Masterpact breakers ftom NLI.
(viii) Any advice related to the defect or failure to comply about the facility, activity, or basic component that bas been, ls being, or will be given to purchasers or licensees.
NLI is currently working with the OEM of the circuit breaker to determine the permanent solution to correct the possible failure to close event after the breaker is subjected to an Anti-Pump condition.
Advice for plants with breakers currently installed:
Evaluate the applications where the breakers may be potentially subjected to an Anti-Pump condition; where the close coil will be energized for an extended period of time.
The circuit breaker will continue to operate if this condition is present however there may need to be human interaction with the circuit breaker by manually pressing the trip/open button on the front of the circuit breaker to free the mechanis~.
Please contact NLI with any questions or comments.
s~~
ThwyBo~
Director of Quality Assurance Page 4 of4