ML14349A433: Difference between revisions
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{{#Wiki_filter:W0..LF CREEKNUCLEAR OPERATING CORPORATIONJaime H. McCoy December 8, 2014Vice President EngineeringET 14-0037U. S. Nuclear Regulatory CommissionATTN: Document Control DeskWashington, DC 20555 | |||
==Reference:== | |||
: 1) Letter ET 13-0035, dated November 21, 2013, from J. P Broschak,WCNOC, to USNRC | |||
==Subject:== | |||
Docket No. 50-482: Supplemental Information Regarding LicenseAmendment Request for Revision to the Wolf Creek Generating StationFire Protection Program Related to Alternative Shutdown CapabilityGentlemen:Reference 1 provided the Wolf Creek Nuclear Operating Corporation (WCNOC) application torevise the approved fire protection program as described in the Updated Safety Analysis Report(USAR). Attachment I to Reference 1 (page 10 of 64), Section 3.4, "Defense-In-DepthEvaluation," describes the defense-in-depth fire protection features utilized to meet the conceptof defense-in-depth described in 10 CFR 50, Appendix R. Section 3.4 states, in part:Defense-in-depth fire protection features established for meeting the above objectives forthe control room includes the following:8. Cables carrying voltages greater than 120 VAC/125 VDC are not run in thecontrol room. Cables in the control room are limited to those that terminate in thecontrol room for instrumentation and control circuits as well as lighting and otherancillary uses.During a review of external operating experience, Institute of Nuclear Power Operations EventReport (IER) 14-33, "Direct Current Circuits Challenge Appendix R Fire Analysis," it wasidentified that there are cables carrying voltages of 250 VDC in the control room. These cablesare associated with hand switches and indication circuits for the Turbine Generator directcurrent (DC) Emergency Lube Oil Pump and the Emergency DC Seal Oil Pump. These cablesare IEEE-383,"Standard for Type Test of Class 1E Electric Cables, Field Splices, andConnections for Nuclear Power Generating Stations," qualified which indicates that they will notreadily ignite and propagate a fire. The presence of the 250 VDC cables in the control roomdoes not adversely impact the conclusion that the fire protection defense-in-depth featureswithin the control room provide reasonable assurance that a severe fire that causes theevacuation of the control room is unlikely.P.O. Box 411 / Burlington, KS 66839 / Phone: (620) 364-8831An Equal Opportunity Employer M/F/HC/VET ET 14-0037Page 2 of 3Item 8, in Section 3.4, is revised to state:8. Cables in the control room are limited to those that terminate in the control roomfor instrumentation and control circuits as well as lighting and other ancillaryuses.The additional information does not expand the scope of the application and does not impactthe no significant hazards consideration determination presented in Reference 1.In accordance with 10 CFR 50.91, "Notice for public comment; State consultation," a copy ofthis submittal is being provided to the designated Kansas State official.This letter contains no commitments. If you have any questions concerning this matter, pleasecontact me at (620) 364-4156, or Mr. Steven R. Koenig at (620) 364-4041.Sincerely,Jai e H. McCoyJHM/rltcc: T. A. Conley (KDHE)M. L. Dapas (NRC)C. F. Lyon (NRC)N. F. O'Keefe (NRC)Senior Resident Inspector (NRC) | |||
ET 14-0037Page 3 of 3STATE OF KANSAS))ssCOUNTY OF COFFEY )Jaime H. McCoy, of lawful age, being first duly sworn upon oath says that he is Vice PresidentEngineering of Wolf Creek Nuclear Operating Corporation; that he has read the foregoingdocument and knows the contents thereof; that he has executed the same for and on behalf ofsaid Corporation with full power and authority to do so; and that the facts therein stated are trueand correct to the best of his knowledge, information and belief.By __ _ _Jaime .iMcCoyVice President EngineeringSUBSCRIBED and sworn to before me this 0 day of becerr be(-,2014.NA14bh)SNctzry Pu~ligz -State of KansasIExpiration Date* .! w}} | |||
Revision as of 11:12, 16 June 2018
| ML14349A433 | |
| Person / Time | |
|---|---|
| Site: | Wolf Creek  |
| Issue date: | 12/08/2014 |
| From: | McCoy J H Wolf Creek |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| 13-0035, ET 14-0037 | |
| Download: ML14349A433 (3) | |
Text
W0..LF CREEKNUCLEAR OPERATING CORPORATIONJaime H. McCoy December 8, 2014Vice President EngineeringET 14-0037U. S. Nuclear Regulatory CommissionATTN: Document Control DeskWashington, DC 20555
Reference:
Subject:
Docket No. 50-482: Supplemental Information Regarding LicenseAmendment Request for Revision to the Wolf Creek Generating StationFire Protection Program Related to Alternative Shutdown CapabilityGentlemen:Reference 1 provided the Wolf Creek Nuclear Operating Corporation (WCNOC) application torevise the approved fire protection program as described in the Updated Safety Analysis Report(USAR). Attachment I to Reference 1 (page 10 of 64), Section 3.4, "Defense-In-DepthEvaluation," describes the defense-in-depth fire protection features utilized to meet the conceptof defense-in-depth described in 10 CFR 50, Appendix R. Section 3.4 states, in part:Defense-in-depth fire protection features established for meeting the above objectives forthe control room includes the following:8. Cables carrying voltages greater than 120 VAC/125 VDC are not run in thecontrol room. Cables in the control room are limited to those that terminate in thecontrol room for instrumentation and control circuits as well as lighting and otherancillary uses.During a review of external operating experience, Institute of Nuclear Power Operations EventReport (IER) 14-33, "Direct Current Circuits Challenge Appendix R Fire Analysis," it wasidentified that there are cables carrying voltages of 250 VDC in the control room. These cablesare associated with hand switches and indication circuits for the Turbine Generator directcurrent (DC) Emergency Lube Oil Pump and the Emergency DC Seal Oil Pump. These cablesare IEEE-383,"Standard for Type Test of Class 1E Electric Cables, Field Splices, andConnections for Nuclear Power Generating Stations," qualified which indicates that they will notreadily ignite and propagate a fire. The presence of the 250 VDC cables in the control roomdoes not adversely impact the conclusion that the fire protection defense-in-depth featureswithin the control room provide reasonable assurance that a severe fire that causes theevacuation of the control room is unlikely.P.O. Box 411 / Burlington, KS 66839 / Phone: (620) 364-8831An Equal Opportunity Employer M/F/HC/VET ET 14-0037Page 2 of 3Item 8, in Section 3.4, is revised to state:8. Cables in the control room are limited to those that terminate in the control roomfor instrumentation and control circuits as well as lighting and other ancillaryuses.The additional information does not expand the scope of the application and does not impactthe no significant hazards consideration determination presented in Reference 1.In accordance with 10 CFR 50.91, "Notice for public comment; State consultation," a copy ofthis submittal is being provided to the designated Kansas State official.This letter contains no commitments. If you have any questions concerning this matter, pleasecontact me at (620) 364-4156, or Mr. Steven R. Koenig at (620) 364-4041.Sincerely,Jai e H. McCoyJHM/rltcc: T. A. Conley (KDHE)M. L. Dapas (NRC)C. F. Lyon (NRC)N. F. O'Keefe (NRC)Senior Resident Inspector (NRC)
ET 14-0037Page 3 of 3STATE OF KANSAS))ssCOUNTY OF COFFEY )Jaime H. McCoy, of lawful age, being first duly sworn upon oath says that he is Vice PresidentEngineering of Wolf Creek Nuclear Operating Corporation; that he has read the foregoingdocument and knows the contents thereof; that he has executed the same for and on behalf ofsaid Corporation with full power and authority to do so; and that the facts therein stated are trueand correct to the best of his knowledge, information and belief.By __ _ _Jaime .iMcCoyVice President EngineeringSUBSCRIBED and sworn to before me this 0 day of becerr be(-,2014.NA14bh)SNctzry Pu~ligz -State of KansasIExpiration Date* .! w