ML13273A014: Difference between revisions
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{{#Wiki_filter:Tennessee Valley Authority, Post Office Box 2000, Decatur, Alabama 35609-2000 September 24, 2013 10 CFR 21.21 ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, D.C. 20555-0001 Browns Ferry Nuclear Plant, Units 1, 2, and 3 Renewed Facility Operating License Nos. DPR-33, DPR-52, and DPR-68 NRC Docket Nos. 50-259, 50-260, and 50-296 | {{#Wiki_filter:Tennessee Valley Authority, Post Office Box 2000, Decatur, Alabama 35609-2000 September 24, 2013 10 CFR 21.21 ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, D.C. 20555-0001 Browns Ferry Nuclear Plant, Units 1, 2, and 3 Renewed Facility Operating License Nos. DPR-33, DPR-52, and DPR-68 NRC Docket Nos. 50-259, 50-260, and 50-296 | ||
==Subject:== | ==Subject:== | ||
10 CFR Part 21 Interim Report -Engine Systems, Inc. -Relay Contact A4X-A4Y The Tennessee Valley Authority recently identified Relay Contact A4X-A4Y for Relay FSR1X, that is part of the D Emergency Diesel Generator shutdown circuit, failed to operate as expected. | 10 CFR Part 21 Interim Report - Engine Systems, Inc. - Relay Contact A4X-A4Y The Tennessee Valley Authority recently identified Relay Contact A4X-A4Y for Relay FSR1X, that is part of the D Emergency Diesel Generator shutdown circuit, failed to operate as expected. Corrective Action Program documents were written to document the failure of the relay contact and to perform an engineering evaluation of the condition. | ||
Corrective Action Program documents were written to document the failure of the relay contact and to perform an engineering evaluation of the condition. | TVA's evaluation concluded that this condition has the potential to constitute a reportable condition pursuant to Title 10 of the Code of Federal Regulations (10 CFR) Part 21, "Reporting of Defects and Noncompliance," and as such, requires additional evaluation. | ||
TVA's evaluation concluded that this condition has the potential to constitute a reportable condition pursuant to Title 10 of the Code of Federal Regulations (10 CFR) Part 21,"Reporting of Defects and Noncompliance," and as such, requires additional evaluation. | The Tennessee Valley Authority is working with Engine Systems, Inc. to determine the cause of the failure of Relay Contact A4X-A4Y. At this time, Engine Systems, Inc. | ||
The Tennessee Valley Authority is working with Engine Systems, Inc. to determine the cause of the failure of Relay Contact A4X-A4Y. At this time, Engine Systems, Inc.expects to complete their 10 CFR Part 21 evaluation by November 15, 2013. Based on this expected completion date, the Tennessee Valley Authority will submit a final 10 CFR Part 21 report by December 3, 2013. The enclosure to this letter provides information required by 10 CFR Part 21.21(a)(2) for the interim report of this condition. | expects to complete their 10 CFR Part 21 evaluation by November 15, 2013. Based on this expected completion date, the Tennessee Valley Authority will submit a final 10 CFR Part 21 report by December 3, 2013. The enclosure to this letter provides information required by 10 CFR Part 21.21(a)(2) for the interim report of this condition. | ||
There are no new regulatory commitments contained in this letter. Should you have any questions concerning this submittal, please contact J. E. Emens, Jr., Nuclear Site Licensing Manager, at (256) 729-2636.Respectfully, K. J.Presin Vice President U.S. Nuclear Regulatory Commission Page 2 September 24, 2013 | There are no new regulatory commitments contained in this letter. Should you have any questions concerning this submittal, please contact J. E. Emens, Jr., Nuclear Site Licensing Manager, at (256) 729-2636. | ||
Respectfully, K. J.Presin Vice President | |||
U.S. Nuclear Regulatory Commission Page 2 September 24, 2013 | |||
==Enclosure:== | ==Enclosure:== | ||
10 CFR Part 21 Interim Report - Engine Systems, Inc. - Relay Contact A4X-A4Y cc (w/ Enclosure): | |||
NRC Regional Administrator - Region II NRC Senior Resident Inspector - Browns Ferry Nuclear Plant | |||
Enclosure Browns Ferry Nuclear Plant, Units 1, 2, and 3 10 CFR Part 21 Interim Report Engine Systems, Inc. - Relay Contact A4X-A4Y See Enclosed | |||
10 CFR Part 21 Interim Report - Engine Systems, Inc. - Relay Contact A4X-A4Y Name and Address of the Individual Making the Interim Report Mr. K. J. Poison Vice President Browns Ferry Nuclear Plant Tennessee Valley Authority Post Office Box 2000 Decatur, Alabama 35609-2000 Identification of the facility, the activity, or basic component supplied for such facility or such activity within the United States which fails to comply or contains a defect (under evaluation) | |||
On July 26, 2013, the Tennessee Valley Authority identified Relay Contact A4X-A4Y for Relay FSR1X, that is part of the D Emergency Diesel Generator (EDG) shutdown circuit, failed to operate as expected. | |||
Identification of the firm constructing the facility or supplying the basic component which fails to comply or contains a defect (under evaluation) | |||
Engine Systems, Inc. | |||
On July 26, 2013, the Tennessee Valley Authority identified Relay Contact A4X-A4Y for Relay FSR1X, that is part of the D Emergency Diesel Generator (EDG) shutdown circuit, failed to operate as expected.Identification of the firm constructing the facility or supplying the basic component which fails to comply or contains a defect (under evaluation) | 175 Freight Rd Rocky Mount, NC 27804 Description of the Deviation or Failure to Comply that is being Evaluated During performance of the post maintenance testing for the D EDG governor replacement modification, when the D EDG was given a normal stop signal from the control room, the D EDG did not idle as expected. Troubleshooting identified that the normally closed Relay Contact A4X-A4Y on Relay FSR1X was closed which caused the fuel actuator to go to zero. This caused the D EDG to shutdown instead of idle. | ||
Engine Systems, Inc.175 Freight Rd Rocky Mount, NC 27804 Description of the Deviation or Failure to Comply that is being Evaluated During performance of the post maintenance testing for the D EDG governor replacement modification, when the D EDG was given a normal stop signal from the control room, the D EDG did not idle as expected. | Evaluation Status Relay Contact A4X-A4Y is being returned to Engine Systems, Inc. to determine if a defect exists. If the relay contact is determined to be defective, Engine Systems, Inc. will perform a 10 CFR Part 21 evaluation. | ||
Troubleshooting identified that the normally closed Relay Contact A4X-A4Y on Relay FSR1X was closed which caused the fuel actuator to go to zero. This caused the D EDG to shutdown instead of idle.Evaluation Status Relay Contact A4X-A4Y is being returned to Engine Systems, Inc. to determine if a defect exists. If the relay contact is determined to be defective, Engine Systems, Inc. will perform a 10 CFR Part 21 evaluation. | Date on which Evaluation will be Completed Engine Systems, Inc. expects to complete their 10 CFR Part 21 evaluation by November 15, 2013. Based on this expected completion date, the Tennessee Valley Authority will submit a final 10 CFR Part 21 report by December 3, 2013. | ||
Date on which Evaluation will be Completed Engine Systems, Inc. expects to complete their 10 CFR Part 21 evaluation by November 15, 2013. Based on this expected completion date, the Tennessee Valley Authority will submit a final 10 CFR Part 21 report by December 3, 2013.E-1}} | E-1}} | ||
Latest revision as of 13:06, 4 November 2019
| ML13273A014 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry  |
| Issue date: | 09/24/2013 |
| From: | Polson K Tennessee Valley Authority |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| Download: ML13273A014 (4) | |
Text
Tennessee Valley Authority, Post Office Box 2000, Decatur, Alabama 35609-2000 September 24, 2013 10 CFR 21.21 ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, D.C. 20555-0001 Browns Ferry Nuclear Plant, Units 1, 2, and 3 Renewed Facility Operating License Nos. DPR-33, DPR-52, and DPR-68 NRC Docket Nos. 50-259, 50-260, and 50-296
Subject:
10 CFR Part 21 Interim Report - Engine Systems, Inc. - Relay Contact A4X-A4Y The Tennessee Valley Authority recently identified Relay Contact A4X-A4Y for Relay FSR1X, that is part of the D Emergency Diesel Generator shutdown circuit, failed to operate as expected. Corrective Action Program documents were written to document the failure of the relay contact and to perform an engineering evaluation of the condition.
TVA's evaluation concluded that this condition has the potential to constitute a reportable condition pursuant to Title 10 of the Code of Federal Regulations (10 CFR) Part 21, "Reporting of Defects and Noncompliance," and as such, requires additional evaluation.
The Tennessee Valley Authority is working with Engine Systems, Inc. to determine the cause of the failure of Relay Contact A4X-A4Y. At this time, Engine Systems, Inc.
expects to complete their 10 CFR Part 21 evaluation by November 15, 2013. Based on this expected completion date, the Tennessee Valley Authority will submit a final 10 CFR Part 21 report by December 3, 2013. The enclosure to this letter provides information required by 10 CFR Part 21.21(a)(2) for the interim report of this condition.
There are no new regulatory commitments contained in this letter. Should you have any questions concerning this submittal, please contact J. E. Emens, Jr., Nuclear Site Licensing Manager, at (256) 729-2636.
Respectfully, K. J.Presin Vice President
U.S. Nuclear Regulatory Commission Page 2 September 24, 2013
Enclosure:
10 CFR Part 21 Interim Report - Engine Systems, Inc. - Relay Contact A4X-A4Y cc (w/ Enclosure):
NRC Regional Administrator - Region II NRC Senior Resident Inspector - Browns Ferry Nuclear Plant
Enclosure Browns Ferry Nuclear Plant, Units 1, 2, and 3 10 CFR Part 21 Interim Report Engine Systems, Inc. - Relay Contact A4X-A4Y See Enclosed
10 CFR Part 21 Interim Report - Engine Systems, Inc. - Relay Contact A4X-A4Y Name and Address of the Individual Making the Interim Report Mr. K. J. Poison Vice President Browns Ferry Nuclear Plant Tennessee Valley Authority Post Office Box 2000 Decatur, Alabama 35609-2000 Identification of the facility, the activity, or basic component supplied for such facility or such activity within the United States which fails to comply or contains a defect (under evaluation)
On July 26, 2013, the Tennessee Valley Authority identified Relay Contact A4X-A4Y for Relay FSR1X, that is part of the D Emergency Diesel Generator (EDG) shutdown circuit, failed to operate as expected.
Identification of the firm constructing the facility or supplying the basic component which fails to comply or contains a defect (under evaluation)
Engine Systems, Inc.
175 Freight Rd Rocky Mount, NC 27804 Description of the Deviation or Failure to Comply that is being Evaluated During performance of the post maintenance testing for the D EDG governor replacement modification, when the D EDG was given a normal stop signal from the control room, the D EDG did not idle as expected. Troubleshooting identified that the normally closed Relay Contact A4X-A4Y on Relay FSR1X was closed which caused the fuel actuator to go to zero. This caused the D EDG to shutdown instead of idle.
Evaluation Status Relay Contact A4X-A4Y is being returned to Engine Systems, Inc. to determine if a defect exists. If the relay contact is determined to be defective, Engine Systems, Inc. will perform a 10 CFR Part 21 evaluation.
Date on which Evaluation will be Completed Engine Systems, Inc. expects to complete their 10 CFR Part 21 evaluation by November 15, 2013. Based on this expected completion date, the Tennessee Valley Authority will submit a final 10 CFR Part 21 report by December 3, 2013.
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