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| | issue date = 04/03/2014 | | | issue date = 04/03/2014 |
| | title = Request for Additional Information (TAC Nos. MF3374 and 3375) | | | title = Request for Additional Information (TAC Nos. MF3374 and 3375) |
| | author name = Martin R E | | | author name = Martin R |
| | author affiliation = NRC/NRR/DORL/LPLII-1 | | | author affiliation = NRC/NRR/DORL/LPLII-1 |
| | addressee name = Pierce C R | | | addressee name = Pierce C |
| | addressee affiliation = Southern Nuclear Operating Co, Inc | | | addressee affiliation = Southern Nuclear Operating Co, Inc |
| | docket = 05000321, 05000366 | | | docket = 05000321, 05000366 |
| | license number = | | | license number = |
| | contact person = Martin R E, NRR/DORL/LPLII-1 | | | contact person = Martin R, NRR/DORL/LPLII-1 |
| | case reference number = TAC MF3374, TAC MF3375 | | | case reference number = TAC MF3374, TAC MF3375 |
| | document type = Letter, Request for Additional Information (RAI) | | | document type = Letter, Request for Additional Information (RAI) |
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| =Text= | | =Text= |
| {{#Wiki_filter:UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 April 3, 2014 Mr. C. R. Pierce Regulatory Affairs Director Southern Nuclear Operating Company, Inc. Post Office Box 1295, Bin -038 Birmingham, AL 35201-1295 | | {{#Wiki_filter:UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 April 3, 2014 Mr. C. R. Pierce Regulatory Affairs Director Southern Nuclear Operating Company, Inc. |
| | Post Office Box 1295, Bin - 038 Birmingham, AL 35201-1295 |
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| ==SUBJECT:== | | ==SUBJECT:== |
| HATCH NUCLEAR PLANT, UNITS 1 AND 2-REQUEST FOR ADDITIONAL INFORMATION (TAC NOS. MF3374 and MF3375) | | HATCH NUCLEAR PLANT, UNITS 1 AND 2- REQUEST FOR ADDITIONAL INFORMATION (TAC NOS. MF3374 and MF3375) |
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| ==Dear Mr. Pierce:== | | ==Dear Mr. Pierce:== |
| By letter dated January 16, 2014, (Agencywide Documents Access and Management System Accession No. ML 14016A202) | | |
| Southern Nuclear Operating Company (SNC), a licensee of Edwin I. Hatch Nuclear Plant, Units 1 and 2 (HNP), submitted a License Amendment Request pursuant to the requirements of Title 1 0 of the Code of Federal Regulations Parts 50 and 73. SNC requests that the U.S. Nuclear Regulatory Commission (NRC) review and approval of a revision to the HNP Technical Specification 3.7.5, Control Room Air Conditioning System, for the HNP. The purpose of the revision is to provide new Required Actions for one, two, or three Main Control Room air conditioning subsystems inoperable, and make other required corresponding changes. The NRC staff finds that additional information is needed as set forth in the Enclosure. | | By letter dated January 16, 2014, (Agencywide Documents Access and Management System Accession No. ML14016A202) Southern Nuclear Operating Company (SNC), a licensee of Edwin I. Hatch Nuclear Plant, Units 1 and 2 (HNP), submitted a License Amendment Request pursuant to the requirements of Title 10 of the Code of Federal Regulations Parts 50 and 73. |
| Please provide the additional information within thirty (30) days of the date of this letter. Docket Nos. 50-321 and 50-366 * | | SNC requests that the U.S. Nuclear Regulatory Commission (NRC) review and approval of a revision to the HNP Technical Specification 3.7.5, Control Room Air Conditioning System, for the HNP. The purpose of the revision is to provide new Required Actions for one, two, or three Main Control Room air conditioning subsystems inoperable, and make other required corresponding changes. |
| | The NRC staff finds that additional information is needed as set forth in the Enclosure. Please provide the additional information within thirty (30) days of the date of this letter. |
| | Sincerely, |
| | {) ~ jJJ -J--111 ~ |
| | f ~~E.lvra~i~,~enior Project Manager Plant Licensing Branch 11-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-321 and 50-366 |
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| ==Enclosure:== | | ==Enclosure:== |
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| Request for Additional Information cc w/encl: Distribution via Listserv Sincerely, {) jJJ -J--111 f Project Manager Plant Licensing Branch 11-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation REQUEST FOR ADDITIONAL INFORMATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION SOUTHERN NUCLEAR OPERATING COMPANY, INC. ; 1 EDWIN I. HATCH NUCLEAR PLANT, UNITS 1 AND 2 The NRC staff requests the following additional information: | | Request for Additional Information cc w/encl: Distribution via Listserv |
| : 1. Please identify the emergency safety functions of the Main Control Room (MCR) Air Conditioning (AC) Systems and discuss the licensing basis analyses of Design-Basis Accidents (DBA) consequences. | | |
| Please identify specific Updated Final Safety analysis Report (UFSAR) sections where the MCR AC systems isolation configuration is described (does it rely on recirculation or outside air supply). 2. Please provide a summary of the HNP Control Room Area heat load analysis. | | REQUEST FOR ADDITIONAL INFORMATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION SOUTHERN NUCLEAR OPERATING COMPANY, INC. |
| Please include inputs, assumptions and boundary conditions utilized. | | 1 EDWIN I. HATCH NUCLEAR PLANT, UNITS 1 AND 2 The NRC staff requests the following additional information: |
| Discuss against the cooling capacity of the MCR AC system, with one or two trains out of service and including limiting outside/inside air temperatures for each case. 3. Please explain what is the minimum system configuration needed in order to perform the systems emergency safety function (e.g., failures of emergency fans, chilled water pump trip, manual restart of the different control room Heating, Ventilation, and Air Conditioning (HVAC) trains, Loss Of Offsite Power (LOOP), and Station Blackout (SBO)) 4. Please provide a summary of the operational history of the Control Room AC system. 5. Please indicate how movements of loads over irradiated fuel assemblies are controlled. | | : 1. Please identify the emergency safety functions of the Main Control Room (MCR) Air Conditioning (AC) Systems and discuss the licensing basis analyses of Design-Basis Accidents (DBA) consequences. Please identify specific Updated Final Safety analysis Report (UFSAR) sections where the MCR AC systems isolation configuration is described (does it rely on recirculation or outside air supply). |
| Please discuss against the definition of Core Alterations used in the TS. 6. Please indicate the administrative procedures that would be put in place in order for operators to keep track of the MCR inside air temperature. | | : 2. Please provide a summary of the HNP Control Room Area heat load analysis. Please include inputs, assumptions and boundary conditions utilized. Discuss against the cooling capacity of the MCR AC system, with one or two trains out of service and including limiting outside/inside air temperatures for each case. |
| | : 3. Please explain what is the minimum system configuration needed in order to perform the systems emergency safety function (e.g., failures of emergency fans, chilled water pump trip, manual restart of the different control room Heating, Ventilation, and Air Conditioning (HVAC) trains, Loss Of Offsite Power (LOOP), and Station Blackout (SBO)) |
| | : 4. Please provide a summary of the operational history of the Control Room AC system. |
| | : 5. Please indicate how movements of loads over irradiated fuel assemblies are controlled. |
| | Please discuss against the definition of Core Alterations used in the TS. |
| | : 6. Please indicate the administrative procedures that would be put in place in order for operators to keep track of the MCR inside air temperature. |
| : 7. Please discuss any compensatory measures considered in case the MCR area temperature approximates the equipment temperature limit of 105 °F (i.e. supplementary cooling).* | | : 7. Please discuss any compensatory measures considered in case the MCR area temperature approximates the equipment temperature limit of 105 °F (i.e. supplementary cooling).* |
| Enclosure Mr. C. R. Pierce Regulatory Affairs Director April 3, 2014 Southern Nuclear Operating Company, Inc. Post Office Box 1295, Bin -038 Birmingham, AL 35201-1295 | | Enclosure |
| | |
| | April 3, 2014 Mr. C. R. Pierce Regulatory Affairs Director Southern Nuclear Operating Company, Inc. |
| | Post Office Box 1295, Bin - 038 Birmingham, AL 35201-1295 |
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| |
|
| ==SUBJECT:== | | ==SUBJECT:== |
| .HATCH NUCLEAR PLANT, UNITS 1 AND 2-REQUEST FOR ADDITIONAL INFORMATION (TAC NOS. MF3374 and MF3375)
| | .HATCH NUCLEAR PLANT, UNITS 1 AND 2- REQUEST FOR ADDITIONAL INFORMATION (TAC NOS. MF3374 and MF3375) |
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| |
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| ==Dear Mr. Pierce:== | | ==Dear Mr. Pierce:== |
| By letter dated January 16, 2014, (Agencywide Documents Access and Management System Accession No. ML 14016A202) | | |
| Southern Nuclear Operating Company (SNC), a licensee of Edwin I. Hatch Nuclear Plant, Units 1 and 2 (HNP), submitted a License Amendment Request pursuant to the requirements of Title 1 0 of the Code of Federal Regulations Parts 50 and 73. SNC requests that the U.S. Nuclear Regulatory Commission (NRC) review and approval of a revision to the HNP Technical Specification 3.7.5, Control Room Air Conditioning System, for the HNP. The purpose of the revision is to provide new Required Actions for one, two, or three Main Control Room air conditioning subsystems inoperable, and make other required corresponding changes. The NRC staff finds that additional information is needed as set forth in the Enclosure. | | By letter dated January 16, 2014, (Agencywide Documents Access and Management System Accession No. ML14016A202) Southern Nuclear Operating Company (SNC), a licensee of Edwin I. Hatch Nuclear Plant, Units 1 and 2 (HNP), submitted a License Amendment Request pursuant to the requirements of Title 10 of the Code of Federal Regulations Parts 50 and 73. |
| Please provide the additional information within thirty (30) days of the date of this letter. Docket Nos. 50-321 and 50-366 | | SNC requests that the U.S. Nuclear Regulatory Commission (NRC) review and approval of a revision to the HNP Technical Specification 3.7.5, Control Room Air Conditioning System, for the HNP. The purpose of the revision is to provide new Required Actions for one, two, or three Main Control Room air conditioning subsystems inoperable, and make other required corresponding changes. |
| | The NRC staff finds that additional information is needed as set forth in the Enclosure. Please provide the additional information within thirty (30) days of the date of this letter. |
| | Sincerely, |
| | /RAJ Robert E. Martin, Senior Project Manager Plant,Licensing Branch 11-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-321 and 50-366 |
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| ==Enclosure:== | | ==Enclosure:== |
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| Request for Addition_al Information I cc: Distribution via Listserv DISTRIBUTION: | | Request for Addition_al Information I |
| PUBLIC RidsAcrsAcnw_MaiiCTR Resource RidsN rrLASFigueroa Resource ADAMS A ccess1on N ML 14091A122 o.: Sincerely, /RAJ Robert E. Martin, Senior Project Manager Plant,Licensing Branch 11-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation LPL2-1 R/F RTorres, NRR RidsNrrDoriDpr Resource . RidsRgn2MaiiCenter Resource RidsNrrDorllpl2-1 Resource RidsNrrPMHatch Resource *B *1 d t d 'JY ema1 ae OFFICE DORULPL2-1 | | cc: Distribution via Listserv DISTRIBUTION: |
| /PM DORULPL2-1 | | PUBLIC LPL2-1 R/F RTorres, NRR RidsAcrsAcnw_MaiiCTR Resource RidsNrrDoriDpr Resource . RidsRgn2MaiiCenter Resource RidsN rrLASFigueroa Resource RidsNrrDorllpl2-1 Resource RidsNrrPMHatch Resource ADAMS Access1on No.: ML14091A122 *B'JY ema1*1 dae t d OFFICE DORULPL2-1 /PM DORULPL2-1 /LA DE/EVIB/BC DORULPL2-1 /BC DORULPL2-1/PM NAME RMartin SFigueroa RDennig RPascarelli RMartin DATE 04/03/14 04/03/14 03/27/14 |
| /LA DE/EVIB/BC DORULPL2-1 | | * 04/03/14 04/03/14 OFFICIAl RECORD COPY}} |
| /BC DORULPL2-1/PM NAME RMartin SFigueroa RDennig RPascarelli RMartin DATE 04/03/14 04/03/14 03/27/14 | |
| * 04/03/14 04/03/14 OFFICIAl RECORD COPY}} | |
Letter Sequence RAI |
|---|
TAC:MF3374, Add Action for Two Inoperable Control Room AC Subsystems (Approved, Closed) TAC:MF3375, Add Action for Two Inoperable Control Room AC Subsystems (Approved, Closed) |
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2024-01-12
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UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 April 3, 2014 Mr. C. R. Pierce Regulatory Affairs Director Southern Nuclear Operating Company, Inc.
Post Office Box 1295, Bin - 038 Birmingham, AL 35201-1295
SUBJECT:
HATCH NUCLEAR PLANT, UNITS 1 AND 2- REQUEST FOR ADDITIONAL INFORMATION (TAC NOS. MF3374 and MF3375)
Dear Mr. Pierce:
By letter dated January 16, 2014, (Agencywide Documents Access and Management System Accession No. ML14016A202) Southern Nuclear Operating Company (SNC), a licensee of Edwin I. Hatch Nuclear Plant, Units 1 and 2 (HNP), submitted a License Amendment Request pursuant to the requirements of Title 10 of the Code of Federal Regulations Parts 50 and 73.
SNC requests that the U.S. Nuclear Regulatory Commission (NRC) review and approval of a revision to the HNP Technical Specification 3.7.5, Control Room Air Conditioning System, for the HNP. The purpose of the revision is to provide new Required Actions for one, two, or three Main Control Room air conditioning subsystems inoperable, and make other required corresponding changes.
The NRC staff finds that additional information is needed as set forth in the Enclosure. Please provide the additional information within thirty (30) days of the date of this letter.
Sincerely,
{) ~ jJJ -J--111 ~
f ~~E.lvra~i~,~enior Project Manager Plant Licensing Branch 11-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-321 and 50-366
Enclosure:
Request for Additional Information cc w/encl: Distribution via Listserv
REQUEST FOR ADDITIONAL INFORMATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION SOUTHERN NUCLEAR OPERATING COMPANY, INC.
1 EDWIN I. HATCH NUCLEAR PLANT, UNITS 1 AND 2 The NRC staff requests the following additional information:
- 1. Please identify the emergency safety functions of the Main Control Room (MCR) Air Conditioning (AC) Systems and discuss the licensing basis analyses of Design-Basis Accidents (DBA) consequences. Please identify specific Updated Final Safety analysis Report (UFSAR) sections where the MCR AC systems isolation configuration is described (does it rely on recirculation or outside air supply).
- 2. Please provide a summary of the HNP Control Room Area heat load analysis. Please include inputs, assumptions and boundary conditions utilized. Discuss against the cooling capacity of the MCR AC system, with one or two trains out of service and including limiting outside/inside air temperatures for each case.
- 3. Please explain what is the minimum system configuration needed in order to perform the systems emergency safety function (e.g., failures of emergency fans, chilled water pump trip, manual restart of the different control room Heating, Ventilation, and Air Conditioning (HVAC) trains, Loss Of Offsite Power (LOOP), and Station Blackout (SBO))
- 4. Please provide a summary of the operational history of the Control Room AC system.
- 5. Please indicate how movements of loads over irradiated fuel assemblies are controlled.
Please discuss against the definition of Core Alterations used in the TS.
- 6. Please indicate the administrative procedures that would be put in place in order for operators to keep track of the MCR inside air temperature.
- 7. Please discuss any compensatory measures considered in case the MCR area temperature approximates the equipment temperature limit of 105 °F (i.e. supplementary cooling).*
Enclosure
April 3, 2014 Mr. C. R. Pierce Regulatory Affairs Director Southern Nuclear Operating Company, Inc.
Post Office Box 1295, Bin - 038 Birmingham, AL 35201-1295
SUBJECT:
.HATCH NUCLEAR PLANT, UNITS 1 AND 2- REQUEST FOR ADDITIONAL INFORMATION (TAC NOS. MF3374 and MF3375)
Dear Mr. Pierce:
By letter dated January 16, 2014, (Agencywide Documents Access and Management System Accession No. ML14016A202) Southern Nuclear Operating Company (SNC), a licensee of Edwin I. Hatch Nuclear Plant, Units 1 and 2 (HNP), submitted a License Amendment Request pursuant to the requirements of Title 10 of the Code of Federal Regulations Parts 50 and 73.
SNC requests that the U.S. Nuclear Regulatory Commission (NRC) review and approval of a revision to the HNP Technical Specification 3.7.5, Control Room Air Conditioning System, for the HNP. The purpose of the revision is to provide new Required Actions for one, two, or three Main Control Room air conditioning subsystems inoperable, and make other required corresponding changes.
The NRC staff finds that additional information is needed as set forth in the Enclosure. Please provide the additional information within thirty (30) days of the date of this letter.
Sincerely,
/RAJ Robert E. Martin, Senior Project Manager Plant,Licensing Branch 11-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-321 and 50-366
Enclosure:
Request for Addition_al Information I
cc: Distribution via Listserv DISTRIBUTION:
PUBLIC LPL2-1 R/F RTorres, NRR RidsAcrsAcnw_MaiiCTR Resource RidsNrrDoriDpr Resource . RidsRgn2MaiiCenter Resource RidsN rrLASFigueroa Resource RidsNrrDorllpl2-1 Resource RidsNrrPMHatch Resource ADAMS Access1on No.: ML14091A122 *B'JY ema1*1 dae t d OFFICE DORULPL2-1 /PM DORULPL2-1 /LA DE/EVIB/BC DORULPL2-1 /BC DORULPL2-1/PM NAME RMartin SFigueroa RDennig RPascarelli RMartin DATE 04/03/14 04/03/14 03/27/14
- 04/03/14 04/03/14 OFFICIAl RECORD COPY
