Letter Sequence Supplement |
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Category:Letter type:RS
MONTHYEARRS-23-097, Constellation Energy Generation, LLC, Advisement of Leadership Changes and Submittal of Updated Standard Practice Procedures Plans2023-10-12012 October 2023
Constellation Energy Generation, LLC, Advisement of Leadership Changes and Submittal of Updated Standard Practice Procedures Plans
RS-23-090, Annual Report of Emergency Core Cooling System Evaluation Model Changes and Errors for Clinton Power Station2023-09-0707 September 2023
Annual Report of Emergency Core Cooling System Evaluation Model Changes and Errors for Clinton Power Station
RS-23-080, Constellation Energy Generation, LLC, Application to Revise Technical Specifications to Adopt TSTF-264-A, Revision 0, 3.3.9 and 3.3.10 - Delete Flux Monitors Specific Overlap Requirement SRs2023-08-30030 August 2023
Constellation Energy Generation, LLC, Application to Revise Technical Specifications to Adopt TSTF-264-A, Revision 0, 3.3.9 and 3.3.10 - Delete Flux Monitors Specific Overlap Requirement SRs
RS-23-081, Request for License Amendment to Revise Technical Specifications Related to Reactor Water Cleanup Isolation Instrumentation2023-08-21021 August 2023
Request for License Amendment to Revise Technical Specifications Related to Reactor Water Cleanup Isolation Instrumentation
RS-23-085, Supplemental Information Related to Request for Partial Site Release2023-08-0303 August 2023
Supplemental Information Related to Request for Partial Site Release
RS-23-077, Response to NRC Regulatory Issue Summary 2023-01, Preparation and Scheduling of Operator Licensing Examinations2023-06-16016 June 2023
Response to NRC Regulatory Issue Summary 2023-01, Preparation and Scheduling of Operator Licensing Examinations
RS-23-073, Request for Partial Site Release2023-06-0707 June 2023
Request for Partial Site Release
RS-23-042, Application to Revise Technical Specifications to Adopt TSTF-580, Provide Exception from Entering Mode 4 with No Operable RHR Shutdown Cooling2023-05-25025 May 2023
Application to Revise Technical Specifications to Adopt TSTF-580, Provide Exception from Entering Mode 4 with No Operable RHR Shutdown Cooling
RS-23-049, Constellation Energy Generation, LLC, Report on Status of Decommissioning Funding for Reactors and Independent Spent Fuel Storage Installations2023-03-23023 March 2023
Constellation Energy Generation, LLC, Report on Status of Decommissioning Funding for Reactors and Independent Spent Fuel Storage Installations
RS-23-039, Request for License Amendment to Revise Technical Specifications Section 3.8.3, Diesel Fuel Oil, Lube Oil, and Starting Air2023-03-0101 March 2023
Request for License Amendment to Revise Technical Specifications Section 3.8.3, Diesel Fuel Oil, Lube Oil, and Starting Air
RS-23-045, Constellation Energy Generation, LLC Submittal of Fitness for Duty Performance Data Reports for 2022 Per 10 CFR 26.717(c) & 10 CFR 26.2032023-02-28028 February 2023
Constellation Energy Generation, LLC Submittal of Fitness for Duty Performance Data Reports for 2022 Per 10 CFR 26.717(c) & 10 CFR 26.203
RS-23-003, Constellation Energy Generation, LLC, Summary of Changes to Quality Assurance Topical Report, NO-AA-10, and Decommissioning Quality Assurance Program, NO-DC-102023-01-31031 January 2023
Constellation Energy Generation, LLC, Summary of Changes to Quality Assurance Topical Report, NO-AA-10, and Decommissioning Quality Assurance Program, NO-DC-10
RS-23-002, Application to Adopt TSTF-332, ECCS Response Time Testing2023-01-13013 January 2023
Application to Adopt TSTF-332, ECCS Response Time Testing
RS-22-126, Constellation Energy Generation, LLC - Request to Use Provisions of a Later Edition of the ASME Boiler and Pressure Vessel Code, Section XI2022-11-30030 November 2022
Constellation Energy Generation, LLC - Request to Use Provisions of a Later Edition of the ASME Boiler and Pressure Vessel Code, Section XI
RS-22-121, Notice of Intent to Pursue Subsequent License Renewal Applications2022-11-0909 November 2022
Notice of Intent to Pursue Subsequent License Renewal Applications
RS-22-092, Nine and Quad Cities - Application to Revise Primary Containment Isolation Instrumentation Technical Specifications in Accordance with TSTF-306, Revision 2, Add Action to LCO 3.3.6.1 to Give Option to Isolate the Penetration2022-10-0303 October 2022
Nine and Quad Cities - Application to Revise Primary Containment Isolation Instrumentation Technical Specifications in Accordance with TSTF-306, Revision 2, Add Action to LCO 3.3.6.1 to Give Option to Isolate the Penetration
RS-22-107, Annual Report of Emergency Core Cooling System Evaluation Model Changes and Errors for Clinton Power Station2022-09-29029 September 2022
Annual Report of Emergency Core Cooling System Evaluation Model Changes and Errors for Clinton Power Station
RS-22-093, Advisement of Leadership Changes for Constellation Energy Generation, LLC and Submittal of Updated Standard Practice Procedures Plans2022-08-18018 August 2022
Advisement of Leadership Changes for Constellation Energy Generation, LLC and Submittal of Updated Standard Practice Procedures Plans
RS-22-089, Additional Information Supporting Request for License Amendment to Revise the Secondary Containment Design Basis to Credit the Fuel Building Railroad Airlock2022-07-25025 July 2022
Additional Information Supporting Request for License Amendment to Revise the Secondary Containment Design Basis to Credit the Fuel Building Railroad Airlock
RS-22-061, Request for License Amendment to Adopt TSTF-269, Revision 2, Allow Administrative Means of Position Verification for Locked or Sealed Valves2022-05-24024 May 2022
Request for License Amendment to Adopt TSTF-269, Revision 2, Allow Administrative Means of Position Verification for Locked or Sealed Valves
RS-22-060, Request for License Amendment to Adopt TSTF-230, Revision 1, Add New Condition B to LCO 3.6.2.3, RHR Suppression Pool Cooling2022-05-24024 May 2022
Request for License Amendment to Adopt TSTF-230, Revision 1, Add New Condition B to LCO 3.6.2.3, RHR Suppression Pool Cooling
RS-22-068, Constellation Radiological Emergency Plan Addendum Revision2022-05-19019 May 2022
Constellation Radiological Emergency Plan Addendum Revision
RS-22-055, Submittal of Preliminary Decommissioning Cost Estimate and Spent Fuel Management Plan2022-04-18018 April 2022
Submittal of Preliminary Decommissioning Cost Estimate and Spent Fuel Management Plan
RS-22-051, Constellation Energy Generation, LLC - Update to Correspondence Addressees and Service Lists2022-04-12012 April 2022
Constellation Energy Generation, LLC - Update to Correspondence Addressees and Service Lists
RS-22-020, Request for License Amendment to Revise the Secondary Containment Design Basis to Credit the Fuel Building Railroad Airlock2022-04-0707 April 2022
Request for License Amendment to Revise the Secondary Containment Design Basis to Credit the Fuel Building Railroad Airlock
RS-22-049, Constellation Energy Generation, LLC, Supplemental Information to Correct Typographical Errors in Constellation'S Application to Revise Technical Specifications to Adopt TSTF-541 Revision 2, Add Exceptions to Surveillance Requirements for2022-04-0404 April 2022
Constellation Energy Generation, LLC, Supplemental Information to Correct Typographical Errors in Constellation'S Application to Revise Technical Specifications to Adopt TSTF-541 Revision 2, Add Exceptions to Surveillance Requirements for V
RS-22-045, Constellation Energy Generation, LLC, Response to NRC Regulatory Issue Summary 2022-01, Preparation and Scheduling of Operator Licensing Examinations2022-03-25025 March 2022
Constellation Energy Generation, LLC, Response to NRC Regulatory Issue Summary 2022-01, Preparation and Scheduling of Operator Licensing Examinations
RS-22-027, Constellation, Response to Request for Additional Information Regarding Application to Revise Technical Specifications to Adopt TSTF-541 Revision 2, Add Exceptions to Surveillance Requirements for Valves and Dampers Locked in the Actuated2022-02-23023 February 2022
Constellation, Response to Request for Additional Information Regarding Application to Revise Technical Specifications to Adopt TSTF-541 Revision 2, Add Exceptions to Surveillance Requirements for Valves and Dampers Locked in the Actuated P
RS-22-023, Constellation Energy Generation, LLC, Executed Trust Fund Agreement Amendment and Subordinate Trust Agreement2022-02-23023 February 2022
Constellation Energy Generation, LLC, Executed Trust Fund Agreement Amendment and Subordinate Trust Agreement
RS-22-019, Constellation Energy Generation, LLC - Update to Correspondence Addressees and Service Lists2022-02-16016 February 2022
Constellation Energy Generation, LLC - Update to Correspondence Addressees and Service Lists
RS-22-015, Notification of Completion of License Transfer and Request to Continue Processing Pending NRC Actions Previously Requested by Exelon Generation Company, LLC2022-02-0101 February 2022
Notification of Completion of License Transfer and Request to Continue Processing Pending NRC Actions Previously Requested by Exelon Generation Company, LLC
RS-22-004, Supplement to Application to Adopt TSTF-554, Revision 1, Revise Reactor Coolant Leakage Requirements2022-01-0404 January 2022
Supplement to Application to Adopt TSTF-554, Revision 1, Revise Reactor Coolant Leakage Requirements
RS-21-121, Proposed Changes to Decommissioning Trust Agreements and Master Terms2021-12-15015 December 2021
Proposed Changes to Decommissioning Trust Agreements and Master Terms
RS-21-102, Annual Report of Emergency Core Cooling System Evaluation Model Changes and Errors2021-09-29029 September 2021
Annual Report of Emergency Core Cooling System Evaluation Model Changes and Errors
RS-21-091, Implementation of Insider Threat Program Requirements Associated with the Voluntary Security Clearance Program and Advisement of Leadership Changes2021-09-13013 September 2021
Implementation of Insider Threat Program Requirements Associated with the Voluntary Security Clearance Program and Advisement of Leadership Changes
RS-21-087, Additional Information Supporting Request for License Amendment to Revise Degraded Voltage Relay Allowable Values2021-08-31031 August 2021
Additional Information Supporting Request for License Amendment to Revise Degraded Voltage Relay Allowable Values
RS-21-078, Response to Request for Additional Information for Application to Revise Technical Specification to Adopt TSTF-582, Reactor Pressure Vessel Water Inventory Control (RPV WIC) Enhancements, and TSTF-583-T, TSTF-582 Diesel2021-08-19019 August 2021
Response to Request for Additional Information for Application to Revise Technical Specification to Adopt TSTF-582, Reactor Pressure Vessel Water Inventory Control (RPV WIC) Enhancements, and TSTF-583-T, TSTF-582 Diesel
RS-21-076, Application to Adopt TSTF-273, Safety Function Determination Program Clarifications2021-07-30030 July 2021
Application to Adopt TSTF-273, Safety Function Determination Program Clarifications
RS-21-070, Proposed Alternative to Utilize Code Case N-8932021-06-30030 June 2021
Proposed Alternative to Utilize Code Case N-893
RS-21-063, Application to Adopt TSTF-554, Revision 1, Revise Reactor Coolant Leakage Requirements2021-06-30030 June 2021
Application to Adopt TSTF-554, Revision 1, Revise Reactor Coolant Leakage Requirements
RS-21-069, Third Inservice Inspection Interval Relief Request I3R-182021-06-28028 June 2021
Third Inservice Inspection Interval Relief Request I3R-18
RS-21-054, Response to NRC Regulatory Issue Summary 2021-01, Preparation and Scheduling of Operator Licensing Examinations2021-04-29029 April 2021
Response to NRC Regulatory Issue Summary 2021-01, Preparation and Scheduling of Operator Licensing Examinations
RS-21-039, Supplemental Information Regarding Application for Order Approving Transfers and Proposed Conforming License Amendments2021-03-25025 March 2021
Supplemental Information Regarding Application for Order Approving Transfers and Proposed Conforming License Amendments
RS-21-037, Response to Request for Additional Information Regarding License Amendment Request to Adopt TSTF-505, Revision 22021-03-23023 March 2021
Response to Request for Additional Information Regarding License Amendment Request to Adopt TSTF-505, Revision 2
RS-21-028, Fitness for Duty Performance Data Reports - Annual 20202021-02-26026 February 2021
Fitness for Duty Performance Data Reports - Annual 2020
RS-21-032, Amended Decommissioning Trust Agreements2021-02-25025 February 2021
Amended Decommissioning Trust Agreements
RS-21-014, License Amendment Request for One-Time Extension of the Containment Type a Integrated Leakage Rate Test Frequency2021-02-24024 February 2021
License Amendment Request for One-Time Extension of the Containment Type a Integrated Leakage Rate Test Frequency
RS-21-030, Report on Status of Decommissioning Funding for Reactors and Independent Spent Fuel Storage Installations2021-02-24024 February 2021
Report on Status of Decommissioning Funding for Reactors and Independent Spent Fuel Storage Installations
RS-21-005, Request for License Amendment to Revise Degraded Voltage Relay Allowable Values2021-01-20020 January 2021
Request for License Amendment to Revise Degraded Voltage Relay Allowable Values
RS-21-001, Revised Proposed Alternative to Utilize Code Cases N-878 and N-880 for Carbon Steel Piping2021-01-0404 January 2021
Revised Proposed Alternative to Utilize Code Cases N-878 and N-880 for Carbon Steel Piping
2023-09-07
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Text
AmerGen.
An Exelon/British Energy Company AmerGen Energy Company, LLC Clinton Power Station R.R. 3 Box 228 Clinton, IL61727-9351 Phone: 217-935-8881 RS-02-019 January 24, 2002 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001 Clinton Power Station, Unit 1 Facility Operating License No. NPF-62 NRC Docket No. 50-461
Subject:
Supplemental Reactor Systems Information Supporting the License Amendment Request to Permit Uprated Power Operation at Clinton Power Station
References:
(1) Letter from J. M. Heffley (AmerGen Energy Company, LLC) to U.S. NRC, "Request for License Amendment for Extended Power Uprate Operation,"
dated June 18, 2001 (2) Letter from J. B. Hopkins (U.S. NRC) to 0. D. Kingsley (Exelon Generation Company, LLC), "Clinton Power Station, Unit 1 - Request For Additional Information (TAC No. MB2210)," dated November 5, 2001 (3) Letter from K. R. Jury (Exelon Generation Company, LLC) to U.S. NRC, "Additional Reactor Systems Information Supporting the License Amendment Request to Permit Uprated Power Operation at Clinton Power Station," dated November 21, 2001 In Reference 1, AmerGen Energy Company (AmerGen), LLC submitted a request for changes to the Facility Operating License No. NPF-62 and Appendix A to the Facility Operating at License, Technical Specifications (TS), for Clinton Power Station (CPS) to allow operation an uprated power level. The proposed changes in Reference 1 would allow CPS to operate at a power level of 3473 megawatts thermal (MWt). This represents an increase of approximately 20 percent rated core thermal power over the current 100 percent power level of 2894 MWt. The NRC in Reference 2 requested additional information regarding the proposed changes in Reference 1. Reference 3 provided the requested information.
The NRC, in a conference call on January 14, 2002, requested clarification on a portion of the information provided in Reference 3. Specifically, RAI Question 3.18 requested confirmation that CPS Emergency Operating Procedures (EOPs) will be consistent with the NRC recommendations for anticipated transients without scram (ATWS) operator actions. The indicated that the response provided did not clearly address the deviations from the generic evaluations performed for ATWS instability events in a BWR/6. The attachment to this letter provides the supplemental information requested. "
January 24, 2002 U. S. Nuclear Regulatory Commission Page 2 Should you have any questions related to this information, please contact Mr. Timothy A.
Byam at (630) 657-2804.
Respectfully,
~fvK. R. Jury Director - Licensing Mid-West Regional Operating Group Attachments:
Affidavit
Attachment:
Supplemental Reactor Systems Information Supporting the License Amendment Request to Permit Uprated Power Operation at Clinton Power Station cc: Regional Administrator - NRC Region III NRC Senior Resident Inspector - Clinton Power Station Office of Nuclear Facility Safety - Illinois Department of Nuclear Safety
STATE OF ILLINOIS )
)
COUNTY OF DUPAGE
)
IN THE MATTER OF
) Docket Number AMERGEN ENERGY COMPANY, LLC
) 50-461 CLINTON POWER STATION, UNIT I
SUBJECT:
Supplemental Reactor Systems Information Supporting the License Amendment Request to Permit Uprated Power Operation at Clinton Power Station AFFIDAVIT I affirm that the content of this transmittal is true and correct to the best of my knowledge, information and belief.
T. W. Simpkin Manager - Licensing Subscribed and sworn to before me, a Notary Public in and for the State above named, this day of
,2002.
,'---m2 d2 ar Pbic O1* TIMOTHYEXPIRES A. BYAM 12/04/05 oumCOMIS
ATTACHMENT Supplemental Reactor Systems Information Supporting the License Amendment Request to Permit Uprated Power Operation at Clinton Power Station Question 3.18:
The EPU submittal did not address whether operation at the higher MELLLA/EPU operation with introductionof GE14 fuel might affect the potential for and impact of thermal-hydraulicinstability. Section L. 3.1, "PowerConditions for A TWS Evaluation,"
and L. 3. 2, "OperatorAction, " of the EL TR I discuss some aspects of the A TWS instability and typical A TWS operatoractions. NEDO-32047-A, "ATWS Rule Issues Relative to BWR Core Thermal-hydraulicStability,"provided generic evaluations of A TWS instability events for BWR/5 and BWR/6.
Confirm that the power shape assumed in NEDO-32047-A bounds the conditions expected for Clinton duringA TWS.
Confirm that the Clinton EOPs will be consistent with the recommendationsof EL TR 1 and the Nuclear Regulatory Commission (NRC) staff's positions in NEDO-32047-A SER.
Response 3.18:
The response to the first part of question 3.18 (i.e., confirmation of power shape) is provided in Reference 1. As stated in that response, the axial power shape assumed in NEDO-32047-A may not bound that in the Clinton Power Station (CPS) extended power uprate (EPU) at middle of cycle. However, the difference is relatively minor and there is sufficient margin in energy deposition. The slightly higher peak values in axial power shape would yield an acceptable energy deposition value.
The required operator actions during ATWS events listed in Reference 2 (ELTRI),
Section L.3.2 mitigate extended dryout and excessive power generation and, therefore, maintain the integrity of the reactor vessel, fuel and containment. These actions are consistent with the ATWS mitigation strategy recommended in Emergency Procedure Guidelines (EPG). Hence, the required operator actions ensure the reactor system integrity. The current CPS emergency operating procedure (EOP) actions for ATWS are not changed for EPU conditions. The specified actions are consistent with the "typical" actions listed in Reference 2, Section L.3.2.
In 1996, the NRC issued a safety evaluation supporting the use of the BWR Owners' Group proposed strategy of lowering reactor vessel water level during an ATWS to a point where subcooling (i.e., the major contributor to core instabilities) would be eliminated. As a result, changes were made to Revision 4 of the EPGs to address this new guidance on ATWS stability actions. Emergency Procedure Guidelines/Severe Accident Guidelines (EPG/SAG), Revision 1 subsequently superseded Revision 4 of the EPGs which contained no provisions for severe accident guidance. The ATWS instability changes made to Revision 4 of the EPGs were incorporated into EPG/SAG Revision 1 and therefore the ATWS strategy was the same between these two versions of the EPGs. CPS EOPs are currently based on EPG/SAG Revision 1. The CPS EOPs are consistent with the ATWS operator actions specified in EPG/SAG Revision 1 up to the point where water level is lowered to the top of active fuel. The EPG/SAG Revision 1 directs the operator to lower water level below the top of active fuel level with the reactor pressure vessel pressurized. It is at this point that CPS has taken a deviation from the EPGs. The CPS EOPs do not direct the operator to lower the water level below top of active fuel. If water level cannot be maintained above the top of active fuel, the operator is directed to depressurize the vessel and then maintain level above the
ATTACHMENT Supplemental Reactor Systems Information Supporting the License Amendment Request to Permit Uprated Power Operation at Clinton Power Station Minimum Steam Cooling Reactor Water Level as read from the Fuel Zone instruments.
This deviation from the EPG/SAG Revision 1 has been evaluated by CPS and determined to be acceptable in accordance with 10 CFR 50.59, "Changes, tests and experiments."
In summary, CPS has implemented an ATWS mitigation strategy that is consistent with Reference 2 as well as the NRC staff's positions in NEDO-32047-A SER. The only deviation CPS has taken from the EPGs has been evaluated and it has been determined to be acceptable. This strategy is not changed for EPU conditions.
REFERENCES
- 1. Letter from K. R. Jury (Exelon Generation Company, LLC) to U.S. NRC, "Additional Reactor Systems Information Supporting the License Amendment Request to Permit Uprated Power Operation at Clinton Power Station," dated November 21, 2001
- 2. General Electric Company Licensing Topical Report, "Generic Guidelines for General Electric Boiling Water Reactor Extended Power Uprate," NEDC-32424P-A, Class Il1, February 1999
