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| | issue date = 06/18/2018 | | | issue date = 06/18/2018 |
| | title = Supplemental Information Related to Application to Revise Technical Specifications to Adopt TSTF-542, Reactor Pressure Vessel Water Inventory Control | | | title = Supplemental Information Related to Application to Revise Technical Specifications to Adopt TSTF-542, Reactor Pressure Vessel Water Inventory Control |
| | author name = Simpson P R | | | author name = Simpson P |
| | author affiliation = Exelon Generation Co, LLC | | | author affiliation = Exelon Generation Co, LLC |
| | addressee name = | | | addressee name = |
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| =Text= | | =Text= |
| {{#Wiki_filter:4300 Winfield Road Warrenville, IL 60555 630 657 2000 Office RS-18-07810 CFR 50.90 June 18, 2018U.S. Nuclear Regulatory CommissionATTN: Document Control DeskWashington, D.C. 20555-0001LaSalle CountyStation, Units1and 2Renewed Facility Operating License Nos. NPF-11 and NPF-18NRC Docket Nos. 50-373 and 50-374 | | {{#Wiki_filter:4300 Winfield Road Warrenville, IL 60555 630 657 2000 Office RS-18-078 10 CFR 50.90 June 18, 2018 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555-0001 LaSalle County Station, Units 1 and 2 Renewed Facility Operating License Nos. NPF-11 and NPF-18 NRC Docket Nos. 50-373 and 50-374 |
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| ==Subject:== | | ==Subject:== |
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| ==References:== | | ==References:== |
| 1.Letter from P. R. Simpson (Exelon Generation Company, LLC (EGC)) to NRC, "Application to Revise Technical Specifications to Adopt TSTF-542, 'Reactor Pressure Vessel Water Inventory Control,'" dated December 13, 20172.Email from B. K. Vaidya(NRC) to D. M. Gullott (EGC), "LaSalle Units 1 and 2, EPID-L-2017-LLA-0415 --Request for Additional Information (RAIs) -License Amendment Request (LAR) to Adopt TSTF-542," dated June 12, 2018InReference 1, EGCsubmitteda request for amendmentsto the Technical Specifications (TS) for LaSalle CountyStation(LSCS), Units1and2.In Reference 2, the NRC determined that additional information was required to complete itsevaluation of the Reference1 request. The requested informationis provided in Attachment 1.Additionally,in Reference 2, the NRC identified two typographical issues associated with the Technical Specifications(TS)changes provided in Reference 1. The identified issues are addressed through the resubmission of the affectedTS markups and revised pages in Attachments 2 and 3, respectively.EGC has reviewed the information supporting a finding of no significant hazards consideration, and the environmental consideration, that were previously provided to the NRC in Reference 1.The additional information provided in this submittal does not affect the bases for concluding that the proposed license amendmentsdo not involve a significant hazards consideration. In addition, the information provided in this submittal does not affect the bases for concluding that neither an environmental impact statement nor an environmental assessment needs to be prepared in connection with the proposed amendments. | | : 1. Letter from P. R. Simpson (Exelon Generation Company, LLC (EGC)) to NRC, "Application to Revise Technical Specifications to Adopt TSTF-542, |
| | 'Reactor Pressure Vessel Water Inventory Control,'" dated December 13, 2017 |
| | : 2. Email from B. K. Vaidya (NRC) to D. M. Gullott (EGC), "LaSalle Units 1 and 2, EPID-L-2017-LLA-0415 - - Request for Additional Information (RAIs) - |
| | License Amendment Request (LAR) to Adopt TSTF-542," dated June 12, 2018 In Reference 1, EGC submitted a request for amendments to the Technical Specifications (TS) for LaSalle County Station (LSCS), Units 1 and 2. In Reference 2, the NRC determined that additional information was required to complete its evaluation of the Reference 1 request. The requested information is provided in Attachment 1. Additionally, in Reference 2, the NRC identified two typographical issues associated with the Technical Specifications (TS) changes provided in Reference 1. The identified issues are addressed through the resubmission of the affected TS markups and revised pages in Attachments 2 and 3, respectively. |
| | EGC has reviewed the information supporting a finding of no significant hazards consideration, and the environmental consideration, that were previously provided to the NRC in Reference 1. |
| | The additional information provided in this submittal does not affect the bases for concluding that the proposed license amendments do not involve a significant hazards consideration. In addition, the information provided in this submittal does not affect the bases for concluding that neither an environmental impact statement nor an environmental assessment needs to be prepared in connection with the proposed amendments. |
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| LaSalle County Station, Units 1 and 2Renewed Facility Operating License Nos. NPF-11 and NPF-18NRC Docket Nos.50-373 and 50-374ATTACHMENT1SUPPLEMENTAL INFORMATION RELATED TO APPLICATION TO REVISE TECHNICAL SPECIFICATIONS TO ADOPT TSTF-542, "REACTOR PRESSURE VESSEL WATER INVENTORY CONTROL" ATTACHMENT 1 -SUPPLEMENTAL INFORMATION RELATED TO APPLICATION TO REVISE TECHNICAL SPECIFICATIONS TO ADOPT TSTF-542, "REACTOR PRESSURE VESSEL WATER INVENTORY CONTROL"Page 1of 2REQUEST FOR ADDITIONAL INFORMATIONAPPLICATION TO REVISE TECHNICAL SPECIFICATION TO ADOPT TSTF-542REVISION 2, "REACTOR PRESSURE VESSEL WATER INVENTORY CONTROL"EXELON GENERATION COMPANY (LLC)LASALLE COUNTY STATION (DOCKET NOS. 50-373 and 50-374) (EPID: L-2017-LLA-0415)By application dated December 13, 2017 (Agencywide Documents Access and Management System Accession No. ML ML17360A159), Exelon Generation Company, LLC (EGC), requests an amendment to Renewed Facility Operating License Nos. NPF-11 and NPF-18 for LaSalle County Station (LSCS), Units 1 and 2, respectively.
| | June 18, 2018 U.S. Nuclear Regulatory Commission Page 2 EGC is notifying the State of Illinois of this supplement to a previous application for a change to the TS by sending a copy of this letter and its attachment to the designated State Official in accordance with 10 CFR 50 .91 , "Notice for public comment; State consultation ," paragraph (b) . |
| The proposed changes modify Technical Specifications (TSs) to adopt TSTF-542.The NRC staff has determined that a request for additional information (RAI) is necessary to complete its review regarding the requested amendment.EICB-RAI-1
| | Approval of the proposed amendments continues to be requested by December 13, 2018. |
| | Once approved, the amendments will be implemented for LSCS, Units 1 and 2 prior to initial entry into Mode 4 during the LSCS, Unit 2 refuel outage in 2019 (i.e., L2R17), which is currently scheduled to occur in February 2019. |
| | There are no regulatory commitments contained within this letter. Should you have any questions concerning this letter, please contact Mr. Mitchel A. Mathews at (630) 657-2819. |
| | I declare under penalty of perjury that the foregoing is true and correct. Executed on the 18th day of June 2018. |
| | Respectfully, Patrick R. Simpson Manager - Licensing Exelon Generation Company, LLC Attachments: 1. Supplemental Information Related to Application to Revise Technical Specifications to Adopt TSTF-542, "Reactor Pressure Vessel Water Inventory Control" |
| | : 2. Revised Technical Specifications Page Changes (Mark-Ups) |
| | : 3. Revised Technical Specifications Pages cc: NRC Regional Administrator, Region Ill NRC Senior Resident Inspector - LaSalle County Station Illinois Emergency Management Agency - Division of Nuclear Safety |
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| ==Background:==
| | LaSalle County Station, Units 1 and 2 Renewed Facility Operating License Nos. NPF-11 and NPF-18 NRC Docket Nos. 50-373 and 50-374 ATTACHMENT 1 SUPPLEMENTAL INFORMATION RELATED TO APPLICATION TO REVISE TECHNICAL SPECIFICATIONS TO ADOPT TSTF-542, "REACTOR PRESSURE VESSEL WATER INVENTORY CONTROL" |
| In Attachment 2 of the LAR, on page 3.3.5.2-3, proposed LSCS TS Table 3.3.5.2-1, Function1.a, "Low Pressure Coolant Injection-A (LPCI) and Low PressureCore Spray (LPCS) Subsystems, and Function 2.a, "LPCI-B and LPCI-C Subsystem,"Reactor Steam Dome Pressure -Low (Injection Permissive)," are not consistent with TSTF-542.For Modes 4 and 5, the equivalent function in TSTF-542 standard technical specifications (STS) Table 3.3.5.2-1 retains the same requirement for channels per function (three) as found in STS Table 3.3.5.1-1.However, LSCS proposed to reduce the channels per function from two in current LSCS TS table 3.3.5.1-1 (Functions 1.d and 2.d) to one in proposed Table 3.3.5.2-1.This difference was not identified as a variation in Section 2.2 of Attachment 1 of the LAR.Question: Please provide technical justification for the proposed required channels per function for Functions 1.a and 2.a in LSCS TS Table 3.3.5.2-1.Exelon Generation Company, LLC (EGC)ResponseIn Attachment 2 of EGC's December 13, 2017, request to adopt Technical Specifications Task Force (TSTF) Traveler TSTF-542, EGC indicated in the proposed LaSalle County Station (LSCS),Units 1 and 2 Technical Specifications (TS), that for Table 3.3.5.2-1 Functions 1.a and 2.a, "Reactor Steam Dome Pressure Low (Injection Permissive)," only one channelis needed. This applied to the required Low Pressure Coolant Injection-A (LPCI) and Low Pressure Core Spray (LPCS) Subsystems, andrequiredLPCI B and LPCI C Subsystems, respectively. This proposal is related to bracketed values in the markup of the Standard Technical Specifications pages provided in TSTF-542; therefore, EGC did not initially consider this a variation. However, ATTACHMENT 1 -SUPPLEMENTAL INFORMATION RELATED TO APPLICATION TO REVISE TECHNICAL SPECIFICATIONS TO ADOPT TSTF-542, "REACTOR PRESSURE VESSEL WATER INVENTORY CONTROL"Page 2of 2the following explanation provides additional clarity to aid the NRC in its review of the EGC proposal. Specifically, the instruments associated with TS Table 3.3.5.2-1, Functions 1.a and 2.a are installed in a parallel configuration, so only one of the two channels for these functions is required to satisfy the logic and provide the permissive for the associated subsystem. Moreover, if the required channel is found to be inoperable, Limiting Condition for Operation 3.3.5.2, "RPV Water Inventory Control Instrumentation," Condition C applies. Required Action C.1, requires the channel to be placed in trip within one hour, which will allow manual operation of the associated subsystem.Therefore, for manual operation of a required subsystems in Modes 4 and 5 as proposed, only one instrument channel is needed for Table 3.3.5.2-1, Functions 1.a and 2.a.Additional Corrections:The NRC staff noted that the following corrections are needed to the TS Mark-up Pages submitted in the Application:1.Attachment 2 of the License Amendment Request (LAR), markup page 3.5.2-1, Required Action B.1As proposed: B.1 Initiate action to establish a method of water injection capable of operating without offsite power.'Electrical'is missing between offsite and power2.Attachment 2 of the LAR, markup page 3.5.2-2, Condition C is missing period.EGC ResponseUpdated TS Page Changes (i.e., markups) and the corresponding revised TS Pages (i.e., clean pages) that address the identified issues have been included as Attachments 2 and 3, respectively.
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| LaSalle County Station, Units 1 and 2Supplemental Information Related to Application to Revise Technical Specifications to Adopt TSTF-542, "Reactor Pressure Vessel Water InventoryControl"ATTACHMENT 2REVISED TECHNICAL SPECIFICATIONS PAGECHANGES(MARK-UPS)3.5.2-13.5.2-2 RPV Water Inventory ControlECCS-Shutdown
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| ====3.5.2 LaSalle====
| | ATTACHMENT 1 - |
| 1 and 2 3.5.2-1 Amendment No. | | SUPPLEMENTAL INFORMATION RELATED TO APPLICATION TO REVISE TECHNICAL SPECIFICATIONS TO ADOPT TSTF-542, "REACTOR PRESSURE VESSEL WATER INVENTORY CONTROL" REQUEST FOR ADDITIONAL INFORMATION APPLICATION TO REVISE TECHNICAL SPECIFICATION TO ADOPT TSTF-542 REVISION 2, "REACTOR PRESSURE VESSEL WATER INVENTORY CONTROL" EXELON GENERATION COMPANY (LLC) |
| 147/133 3.5 EMERGENCY CORE COOLING SYSTEMS (ECCS), REACTOR PRESSURE VESSEL (RPV)
| | LASALLE COUNTY STATION (DOCKET NOS. 50-373 and 50-374) (EPID: L-2017-LLA-0415) |
| WATER INVENTORY CONTROL, AND REACTOR CORE ISOLATION COOLING (RCIC) | | By application dated December 13, 2017 (Agencywide Documents Access and Management System Accession No. ML ML17360A159), Exelon Generation Company, LLC (EGC), requests an amendment to Renewed Facility Operating License Nos. NPF-11 and NPF-18 for LaSalle County Station (LSCS), Units 1 and 2, respectively. |
| SYSTEM 3.5.2 RPV Water Inventory ControlECCS-Shutdown
| | The proposed changes modify Technical Specifications (TSs) to adopt TSTF-542. |
| | The NRC staff has determined that a request for additional information (RAI) is necessary to complete its review regarding the requested amendment. |
| | EICB-RAI-1 |
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| LCO 3.5.2 DRAIN TIME of RPV water inventory to the top of active
| | ==Background:== |
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| fuel (TAF) shall be hours AND One Two ECCS injection/spray subsystem s shall be OPERABLE.
| | In Attachment 2 of the LAR, on page 3.3.5.2-3, proposed LSCS TS Table 3.3.5.2-1, Function 1.a, "Low Pressure Coolant Injection-A (LPCI) and Low Pressure Core Spray (LPCS) |
| ----------------------------NOTE----------------------------
| | Subsystems, and Function 2.a, LPCI-B and LPCI-C Subsystem," Reactor Steam Dome Pressure - Low (Injection Permissive), are not consistent with TSTF-542. |
| One A L l ow P p ressure C c oolant I i njection (LPCI) subsystem may be considered OPERABLE during alignment and operation
| | For Modes 4 and 5, the equivalent function in TSTF-542 standard technical specifications (STS) |
| | Table 3.3.5.2-1 retains the same requirement for channels per function (three) as found in STS Table 3.3.5.1-1. However, LSCS proposed to reduce the channels per function from two in current LSCS TS table 3.3.5.1-1 (Functions 1.d and 2.d) to one in proposed Table 3.3.5.2-1. This difference was not identified as a variation in Section 2.2 of Attachment 1 of the LAR. |
| | Question: |
| | Please provide technical justification for the proposed required channels per function for Functions 1.a and 2.a in LSCS TS Table 3.3.5.2-1. |
| | Exelon Generation Company, LLC (EGC) Response In Attachment 2 of EGC's December 13, 2017, request to adopt Technical Specifications Task Force (TSTF) Traveler TSTF-542, EGC indicated in the proposed LaSalle County Station (LSCS), Units 1 and 2 Technical Specifications (TS), that for Table 3.3.5.2-1 Functions 1.a and 2.a, "Reactor Steam Dome Pressure Low (Injection Permissive)," only one channel is needed. |
| | This applied to the required Low Pressure Coolant Injection-A (LPCI) and Low Pressure Core Spray (LPCS) Subsystems, and required LPCI B and LPCI C Subsystems, respectively. This proposal is related to bracketed values in the markup of the Standard Technical Specifications pages provided in TSTF-542; therefore, EGC did not initially consider this a variation. However, Page 1 of 2 |
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| for decay heat removal, if capable of being manually | | ATTACHMENT 1 - |
| | SUPPLEMENTAL INFORMATION RELATED TO APPLICATION TO REVISE TECHNICAL SPECIFICATIONS TO ADOPT TSTF-542, "REACTOR PRESSURE VESSEL WATER INVENTORY CONTROL" the following explanation provides additional clarity to aid the NRC in its review of the EGC proposal. Specifically, the instruments associated with TS Table 3.3.5.2-1, Functions 1.a and 2.a are installed in a parallel configuration, so only one of the two channels for these functions is required to satisfy the logic and provide the permissive for the associated subsystem. |
| | Moreover, if the required channel is found to be inoperable, Limiting Condition for Operation 3.3.5.2, "RPV Water Inventory Control Instrumentation," Condition C applies. Required Action C.1, requires the channel to be placed in trip within one hour, which will allow manual operation of the associated subsystem. Therefore, for manual operation of a required subsystems in Modes 4 and 5 as proposed, only one instrument channel is needed for Table 3.3.5.2-1, Functions 1.a and 2.a. |
| | Additional Corrections: |
| | The NRC staff noted that the following corrections are needed to the TS Mark-up Pages submitted in the Application: |
| | : 1. Attachment 2 of the License Amendment Request (LAR), markup page 3.5.2-1, Required Action B.1 As proposed: B.1 Initiate action to establish a method of water injection capable of operating without offsite power. |
| | 'Electrical' is missing between offsite and power |
| | : 2. Attachment 2 of the LAR, markup page 3.5.2-2, Condition C is missing period. |
| | EGC Response Updated TS Page Changes (i.e., markups) and the corresponding revised TS Pages (i.e., clean pages) that address the identified issues have been included as Attachments 2 and 3, respectively. |
| | Page 2 of 2 |
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| realigned and not otherwise inoperable.
| | LaSalle County Station, Units 1 and 2 Supplemental Information Related to Application to Revise Technical Specifications to Adopt TSTF-542, "Reactor Pressure Vessel Water Inventory Control" ATTACHMENT 2 REVISED TECHNICAL SPECIFICATIONS PAGE CHANGES (MARK-UPS) 3.5.2-1 3.5.2-2 |
| ------------------------------------------------------------ | |
| APPLICABILITY: MODE S 4 and , MODE 5 except with the spent fuel storage pool gates removed and water level 22 ft over the top of the reactor pressure vessel flange
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| ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A. One r R equired ECCS injection/spray subsystem inoperable.
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| A.1 Restore required ECCS injection/spray subsystem to OPERABLE
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| status. 4 hours B. Required Action and associated Completion Time of Condition A
| | RPV Water Inventory ControlECCSShutdown 3.5.2 3.5 EMERGENCY CORE COOLING SYSTEMS (ECCS), REACTOR PRESSURE VESSEL (RPV) |
| | WATER INVENTORY CONTROL, AND REACTOR CORE ISOLATION COOLING (RCIC) |
| | SYSTEM 3.5.2 RPV Water Inventory ControlECCSShutdown LCO 3.5.2 DRAIN TIME of RPV water inventory to the top of active fuel (TAF) shall be hours |
| | AND OneTwo ECCS injection/spray subsystems shall be OPERABLE. |
| | ----------------------------NOTE---------------------------- |
| | One A Llow Ppressure Ccoolant Iinjection (LPCI) subsystem may be considered OPERABLE during alignment and operation for decay heat removal, if capable of being manually realigned and not otherwise inoperable. |
| | APPLICABILITY: MODES 4 and, MODE 5 except with the spent fuel storage pool gates removed and water level t 22 ft over the top of the reactor pressure vessel flange. |
| | ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A. One rRequired ECCS A.1 Restore required ECCS 4 hours injection/spray injection/spray subsystem inoperable. subsystem to OPERABLE status. |
| | B. Required Action and B.1 Initiate action to Immediately associated Completion suspend operations Time of Condition A with a potential for not met. draining the reactor vessel (OPDRVs)establish a method of water injection capable of operating without offsite electrical power. |
| | (continued) |
| | LaSalle 1 and 2 3.5.2-1 Amendment No. 147/133 |
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| not met. B.1 Initiate action to suspend operations with a potential for draining the reactor vessel (OPDRVs)establish a method of water injection capable of
| | RPV Water Inventory ControlECCSShutdown 3.5.2 ACTIONS (continued) |
| | CONDITION REQUIRED ACTION COMPLETION TIME C. Two required ECCS C.1 Initiate action to Immediately injection/spray suspend OPDRVs. |
| | subsystems inoperable. |
| | AND C.2 Restore one required 4 hours ECCS injection/spray subsystem to OPERABLE status. |
| | C DRAIN TIME hours C Verify secondary 4 hours and hours containment boundary is capable of being established in less than the DRAIN TIME |
| | AND C Verify each secondary 4 hours containment penetration flow path is capable of being isolated in less than the DRAIN TIME |
| | AND C Verify one standby 4 hours gas treatment subsystem is capable of being placed in operation in less than the DRAIN TIME |
| | (continued) |
| | LaSalle 1 and 2 3.5.2-2 Amendment No. 147/133 |
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| operating without offsite electrical power. Immediately (continued)
| | LaSalle County Station, Units 1 and 2 Supplemental Information Related to Application to Revise Technical Specifications to Adopt TSTF-542, "Reactor Pressure Vessel Water Inventory Control" ATTACHMENT 3 REVISED TECHNICAL SPECIFICATIONS PAGES 3.5.2-1 3.5.2-2 |
| RPV Water Inventory ControlECCS-Shutdown
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| ====3.5.2 LaSalle====
| | RPV Water Inventory Control 3.5.2 3.5 EMERGENCY CORE COOLING SYSTEMS (ECCS), REACTOR PRESSURE VESSEL (RPV) |
| 1 and 2 3.5.2-2 Amendment No.
| | WATER INVENTORY CONTROL, AND REACTOR CORE ISOLATION COOLING (RCIC) |
| 147/133 ACTIONS (continued)
| | SYSTEM 3.5.2 RPV Water Inventory Control LCO 3.5.2 DRAIN TIME of RPV water inventory to the top of active fuel (TAF) shall be KRXUV |
| CONDITION REQUIRED ACTION COMPLETION TIME C. Two required ECCS injection/spray subsystems inoperable.
| | AND One ECCS injection/spray subsystem shall be OPERABLE. |
| C.1 Initiate action to suspend OPDRVs.
| | ----------------------------NOTE---------------------------- |
| AND C.2 Restore one required ECCS injection/spray subsystem to OPERABLE status.
| | A Low Pressure Coolant Injection (LPCI) subsystem may be considered OPERABLE during alignment and operation for decay heat removal, if capable of being manually realigned and not otherwise inoperable. |
| Immediately
| | APPLICABILITY: MODES 4 and 5. |
| | | ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A. Required ECCS A.1 Restore required ECCS 4 hours injection/spray injection/spray subsystem inoperable. subsystem to OPERABLE status. |
| 4 hours C DRAIN TIME hours and hours C Verify secondary containment boundary is capable of being
| | B. Required Action and B.1 Initiate action to Immediately associated Completion establish a method of Time of Condition A water injection not met. capable of operating without offsite electrical power. |
| | | (continued) |
| established in less than the DRAIN TIME AND C Verify each secondary containment
| | LaSalle 1 and 2 3.5.2-1 Amendment No. 147/133 |
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| the DRAIN TIME AND C Verify one standby gas treatment
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| subsystem is capable of being placed in operation in less
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| than the DRAIN TIME 4 hours
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| 4 hours
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| 4 hours (continued)
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| LaSalle County Station, Units 1 and 2Supplemental Information Related to Application to Revise Technical Specifications to Adopt TSTF-542, "Reactor Pressure Vessel Water Inventory Control"ATTACHMENT 3REVISED TECHNICAL SPECIFICATIONS PAGES3.5.2-13.5.2-2 RPV Water Inventory Control
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| ====3.5.2 LaSalle====
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| 1 and 2 3.5.2-1 Amendment No.
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| 147/133 3.5 EMERGENCY CORE COOLING SYSTEMS (ECCS), REACTOR PRESSURE VESSEL (RPV) WATER INVENTORY CONTROL, AND REACTOR CORE ISOLATION COOLING (RCIC)
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| SYSTEM 3.5.2 RPV Water Inventory Control | |
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| LCO 3.5.2 DRAIN TIME of RPV water inventory to the top of active fuel (TAF) shall be AND One ECCS injection/spray subsystem shall be OPERABLE. | |
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| ----------------------------NOTE----------------------------
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| A Low Pressure Coolant Injection (LPCI) subsystem may be considered OPERABLE during alignment and operation for decay heat removal, if capable of being manually realigned and not | |
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| otherwise inoperable. | |
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| ------------------------------------------------------------
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| APPLICABILITY: MODES 4 and 5. | |
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| ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A. Required ECCS injection/spray subsystem inoperable. | |
| A.1 Restore required ECCS injection/spray subsystem to OPERABLE status. | |
| 4 hours B. Required Action and associated Completion Time of Condition A
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| Immediately (continued)
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| RPV Water Inventory Control
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| ====3.5.2 LaSalle====
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| 1 and 2 3.5.2-2 Amendment No. | |
| 147/133 ACTIONS (continued) | |
| CONDITION REQUIRED ACTION COMPLETION TIME C. DRAIN TIME .
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| the DRAIN TIME.
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| 4 hours (continued)}} | | RPV Water Inventory Control 3.5.2 ACTIONS (continued) |
| | CONDITION REQUIRED ACTION COMPLETION TIME C. DRAIN TIME KRXUV C.1 Verify secondary 4 hours DQGKRXUV. containment boundary is capable of being established in less than the DRAIN TIME. |
| | AND C.2 Verify each secondary 4 hours containment penetration flow path is capable of being isolated in less than the DRAIN TIME. |
| | AND C.3 Verify one standby 4 hours gas treatment subsystem is capable of being placed in operation in less than the DRAIN TIME. |
| | (continued) |
| | LaSalle 1 and 2 3.5.2-2 Amendment No. 147/133}} |
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Category:Letter type:RS
MONTHYEARRS-23-120, Supplemental Information Letter for Part 73 Exemption Request - Responses to Request for Confirmatory Information2023-11-10010 November 2023 Supplemental Information Letter for Part 73 Exemption Request - Responses to Request for Confirmatory Information RS-23-103, Request for Exemption from Enhanced Weapons, Firearms Background Checks, and Security Event Notifications Implementation2023-10-13013 October 2023 Request for Exemption from Enhanced Weapons, Firearms Background Checks, and Security Event Notifications Implementation RS-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-23-080, 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-23-087, Revision to Approved Alternatives Associated with the Use of the BWRVIP Guidelines in Lieu of Specific ASME Code Requirements on Reactor2023-08-0404 August 2023 Revision to Approved Alternatives Associated with the Use of the BWRVIP Guidelines in Lieu of Specific ASME Code Requirements on Reactor RS-23-084, Response to Request for Additional Information Regarding the Application to Revise Design Basis to Allow Use of Plastic Section Properties in Lower Downcomer Braces Analysis2023-07-24024 July 2023 Response to Request for Additional Information Regarding the Application to Revise Design Basis to Allow Use of Plastic Section Properties in Lower Downcomer Braces Analysis 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-23-042, 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-23-048, Exigent Amendment Request to Revise Design Basis Related to Seismic Requirements2023-03-0707 March 2023 Exigent Amendment Request to Revise Design Basis Related to Seismic Requirements 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-23-037, Annual 10 CFR 50.46 Report of Emergency Core Cooling System Evaluation Model Changes and Errors for LaSalle County Station2023-02-22022 February 2023 Annual 10 CFR 50.46 Report of Emergency Core Cooling System Evaluation Model Changes and Errors for LaSalle County Station 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-22-085, Application to Revise Design Basis to Allow Use of Plastic Section Properties in Lower Downcomer Braces Analysis2023-01-12012 January 2023 Application to Revise Design Basis to Allow Use of Plastic Section Properties in Lower Downcomer Braces Analysis RS-23-006, Supplemental Information Regarding License Amendment Request Relocation of Pressure and Temperature Limit Curves to the Pressure and Temperature Limits Report2023-01-10010 January 2023 Supplemental Information Regarding License Amendment Request Relocation of Pressure and Temperature Limit Curves to the Pressure and Temperature Limits Report 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-22-109, Response to Request for Additional Information License Amendments Related to Fuel Storage2022-10-12012 October 2022 Response to Request for Additional Information License Amendments Related to Fuel Storage 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-22-093, 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-22-083, Response to Request for Additional Information Related to the License Amendment Request to Change New Fuel Storage Vault and Spent Fuel Storage Pool Criticality Methodologies, with Proposed Changes to Technical2022-06-17017 June 2022 Response to Request for Additional Information Related to the License Amendment Request to Change New Fuel Storage Vault and Spent Fuel Storage Pool Criticality Methodologies, with Proposed Changes to Technical 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-22-049, 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-22-035, Supplemental Information Regarding Relief Request I4R-13 Relief from Code Examinations for 1B33-F060A and 1B33-F060B Repairs2022-03-0404 March 2022 Supplemental Information Regarding Relief Request I4R-13 Relief from Code Examinations for 1B33-F060A and 1B33-F060B Repairs RS-22-033, Response to Request for Additional Information Regarding Relief Request I4R-13 Relief from Code Examinations for 1B33-F060A and 1B33-F060B Repairs2022-03-0303 March 2022 Response to Request for Additional Information Regarding Relief Request I4R-13 Relief from Code Examinations for 1B33-F060A and 1B33-F060B Repairs RS-22-032, Relief Request I4R-13 Relief from Code Examinations for 1B33-F060A and 1B33-F060B Repairs2022-03-0202 March 2022 Relief Request I4R-13 Relief from Code Examinations for 1B33-F060A and 1B33-F060B Repairs 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-22-027, 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-22-018, Annual 10 CFR 50.46 Report of Emergency Core Cooling System Evaluation Model Changes and Errors for LaSalle County Station2022-02-22022 February 2022 Annual 10 CFR 50.46 Report of Emergency Core Cooling System Evaluation Model Changes and Errors for LaSalle County Station 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-21-115, Supplemental Information for License Amendment Request Regarding New Fuel Storage Vault and Spent Fuel Storage Pool Criticality Methodologies, with Proposed Changes to Technical Specifications 4.3.1 and 5.6.52021-11-0404 November 2021 Supplemental Information for License Amendment Request Regarding New Fuel Storage Vault and Spent Fuel Storage Pool Criticality Methodologies, with Proposed Changes to Technical Specifications 4.3.1 and 5.6.5 RS-21-109, Request to Withhold Meeting Materials for the Non-Public Meeting Held on September 2, 20212021-10-14014 October 2021 Request to Withhold Meeting Materials for the Non-Public Meeting Held on September 2, 2021 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-21-078, 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-21-085, Response to Request for Additional Information Regarding License Amendment Request to Incorporate Licensing Topical Report NEDE-33885PA, Revision 1, GNF CRDA Application Methodology (EPID-L-2021-LLA-0016)2021-08-17017 August 2021 Response to Request for Additional Information Regarding License Amendment Request to Incorporate Licensing Topical Report NEDE-33885PA, Revision 1, GNF CRDA Application Methodology (EPID-L-2021-LLA-0016) 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-21-064, License Amendment Request Re New Fuel Storage Vault and Spent Fuel Storage Pool Criticality Methodologies - Cover Letter2021-06-30030 June 2021 License Amendment Request Re New Fuel Storage Vault and Spent Fuel Storage Pool Criticality Methodologies - Cover Letter RS-21-070, Proposed Alternative to Utilize Code Case N-8932021-06-30030 June 2021 Proposed Alternative to Utilize Code Case N-893 RS-21-055, Response to Third Round Request for Additional Information (Rals) for LaSalle License Amendment Request to Adopt Risk Informed Completion Times TSTF- 505, Revision 2, Provide Risk-Informed Extended.2021-05-10010 May 2021 Response to Third Round Request for Additional Information (Rals) for LaSalle License Amendment Request to Adopt Risk Informed Completion Times TSTF- 505, Revision 2, Provide Risk-Informed Extended. 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-21-050, Response to Request for Additional Information (RAI) Regarding Request for License Amendment Regarding Ultimate Heat Sink (EPID-L-2020-LLA-0165)2021-04-16016 April 2021 Response to Request for Additional Information (RAI) Regarding Request for License Amendment Regarding Ultimate Heat Sink (EPID-L-2020-LLA-0165) RS-21-045, Response to Request for Additional Information (RAI) Regarding Request for License Amendment Regarding Ultimate Heat Sink (EPID-L-2020-LLA-0165)2021-04-0707 April 2021 Response to Request for Additional Information (RAI) Regarding Request for License Amendment Regarding Ultimate Heat Sink (EPID-L-2020-LLA-0165) RS-21-040, Response to Second Round Request for Additional Information (Rais) for License Amendment Request to Adopt Risk Informed Completion Times TSTF-505, Revision 2, Provide Risk-Informed Extended Completion Times - RITSTF Initiative 4b2021-03-31031 March 2021 Response to Second Round Request for Additional Information (Rais) for License Amendment Request to Adopt Risk Informed Completion Times TSTF-505, Revision 2, Provide Risk-Informed Extended Completion Times - RITSTF Initiative 4b RS-21-043, Supplemental Information Regarding Relief Request I4R-12 Relief from Code Examinations for 2B33-F060A and 2B33-F060B Repairs, Revision 22021-03-26026 March 2021 Supplemental Information Regarding Relief Request I4R-12 Relief from Code Examinations for 2B33-F060A and 2B33-F060B Repairs, Revision 2 RS-21-042, Relief Request I4R-12 Relief from Code Examinations for 2B33-F060A and 2B33-F060B Repairs, Revision 22021-03-26026 March 2021 Relief Request I4R-12 Relief from Code Examinations for 2B33-F060A and 2B33-F060B Repairs, Revision 2 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-21-035, Relief Request I4R-12 Relief from Code Examinations for 2B33-F060A and 2B33-F060B Repairs2021-03-0909 March 2021 Relief Request I4R-12 Relief from Code Examinations for 2B33-F060A and 2B33-F060B Repairs 2023-08-04
[Table view] Category:Response to Request for Additional Information (RAI)
MONTHYEARRS-23-120, Supplemental Information Letter for Part 73 Exemption Request - Responses to Request for Confirmatory Information2023-11-10010 November 2023 Supplemental Information Letter for Part 73 Exemption Request - Responses to Request for Confirmatory Information RS-23-084, Response to Request for Additional Information Regarding the Application to Revise Design Basis to Allow Use of Plastic Section Properties in Lower Downcomer Braces Analysis2023-07-24024 July 2023 Response to Request for Additional Information Regarding the Application to Revise Design Basis to Allow Use of Plastic Section Properties in Lower Downcomer Braces Analysis RS-22-109, Response to Request for Additional Information License Amendments Related to Fuel Storage2022-10-12012 October 2022 Response to Request for Additional Information License Amendments Related to Fuel Storage RS-22-083, Response to Request for Additional Information Related to the License Amendment Request to Change New Fuel Storage Vault and Spent Fuel Storage Pool Criticality Methodologies, with Proposed Changes to Technical2022-06-17017 June 2022 Response to Request for Additional Information Related to the License Amendment Request to Change New Fuel Storage Vault and Spent Fuel Storage Pool Criticality Methodologies, with Proposed Changes to Technical RS-22-033, Response to Request for Additional Information Regarding Relief Request I4R-13 Relief from Code Examinations for 1B33-F060A and 1B33-F060B Repairs2022-03-0303 March 2022 Response to Request for Additional Information Regarding Relief Request I4R-13 Relief from Code Examinations for 1B33-F060A and 1B33-F060B Repairs 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 NMP1L3447, Constellation Energy Generation, LLC - Response to Request for Additional Information - Proposed Relief Request Associated with Reactor Pressure Vessel Water Level Instrumentation Partial Penetration Nozzle Repairs2022-02-0202 February 2022 Constellation Energy Generation, LLC - Response to Request for Additional Information - Proposed Relief Request Associated with Reactor Pressure Vessel Water Level Instrumentation Partial Penetration Nozzle Repairs JAFP-21-0087, Response to Request for Additional Information Regarding Request for Approval of Transfer of Licenses and Conforming Amendments2021-09-16016 September 2021 Response to Request for Additional Information Regarding Request for Approval of Transfer of Licenses and Conforming Amendments 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-21-085, Response to Request for Additional Information Regarding License Amendment Request to Incorporate Licensing Topical Report NEDE-33885PA, Revision 1, GNF CRDA Application Methodology (EPID-L-2021-LLA-0016)2021-08-17017 August 2021 Response to Request for Additional Information Regarding License Amendment Request to Incorporate Licensing Topical Report NEDE-33885PA, Revision 1, GNF CRDA Application Methodology (EPID-L-2021-LLA-0016) NMP2L2773, Company - Response to Request for Additional Information2021-06-30030 June 2021 Company - Response to Request for Additional Information JAFP-21-0044, Response to Request for Additional Information Regarding Request for Approval of Transfer of Licenses and Conforming Amendments2021-06-11011 June 2021 Response to Request for Additional Information Regarding Request for Approval of Transfer of Licenses and Conforming Amendments RS-21-055, Response to Third Round Request for Additional Information (Rals) for LaSalle License Amendment Request to Adopt Risk Informed Completion Times TSTF- 505, Revision 2, Provide Risk-Informed Extended.2021-05-10010 May 2021 Response to Third Round Request for Additional Information (Rals) for LaSalle License Amendment Request to Adopt Risk Informed Completion Times TSTF- 505, Revision 2, Provide Risk-Informed Extended. JAFP-21-0032, Response to Request for Additional Information - Proposed Alternative Concerning ASME Section XI Repair/Replacement Documentation for Replacement of Pressure Retaining Bolting2021-04-20020 April 2021 Response to Request for Additional Information - Proposed Alternative Concerning ASME Section XI Repair/Replacement Documentation for Replacement of Pressure Retaining Bolting RS-21-050, Response to Request for Additional Information (RAI) Regarding Request for License Amendment Regarding Ultimate Heat Sink (EPID-L-2020-LLA-0165)2021-04-16016 April 2021 Response to Request for Additional Information (RAI) Regarding Request for License Amendment Regarding Ultimate Heat Sink (EPID-L-2020-LLA-0165) RS-21-045, Response to Request for Additional Information (RAI) Regarding Request for License Amendment Regarding Ultimate Heat Sink (EPID-L-2020-LLA-0165)2021-04-0707 April 2021 Response to Request for Additional Information (RAI) Regarding Request for License Amendment Regarding Ultimate Heat Sink (EPID-L-2020-LLA-0165) RS-21-040, Response to Second Round Request for Additional Information (Rais) for License Amendment Request to Adopt Risk Informed Completion Times TSTF-505, Revision 2, Provide Risk-Informed Extended Completion Times - RITSTF Initiative 4b2021-03-31031 March 2021 Response to Second Round Request for Additional Information (Rais) for License Amendment Request to Adopt Risk Informed Completion Times TSTF-505, Revision 2, Provide Risk-Informed Extended Completion Times - RITSTF Initiative 4b RS-21-027, Response to Request for Additional Information Regarding Request for Exemption from Pre-Access Drug and Alcohol Testing Requirements in 10 CFR 26.652021-02-21021 February 2021 Response to Request for Additional Information Regarding Request for Exemption from Pre-Access Drug and Alcohol Testing Requirements in 10 CFR 26.65 ML21022A1302021-01-22022 January 2021 Response to Request for Additional Information Regarding the License Amendment Request to Adopt 10 CFR 50.69 RS-20-136, Response to Request for Additional Information Re License Amendment Requests for Amendments to Renewed Facility OL to Adopt 10CFR50.69 & to Adopt TSTF-505, Rev. 2 (EPID L-2020-LLA-0017 and EPID-L-2020-LLA-0018)2020-10-29029 October 2020 Response to Request for Additional Information Re License Amendment Requests for Amendments to Renewed Facility OL to Adopt 10CFR50.69 & to Adopt TSTF-505, Rev. 2 (EPID L-2020-LLA-0017 and EPID-L-2020-LLA-0018) RS-20-133, Response to Request for Additional Information Re License Amendment Request to Renewed Facility Operating Licenses to Adopt 10 CFR 50.692020-10-16016 October 2020 Response to Request for Additional Information Re License Amendment Request to Renewed Facility Operating Licenses to Adopt 10 CFR 50.69 RS-20-104, Supplement to the Request for a License Amendment Technical Specification 3.7.3, Ultimate Heat Sink2020-09-11011 September 2020 Supplement to the Request for a License Amendment Technical Specification 3.7.3, Ultimate Heat Sink RS-20-112, Response to Request for Additional Information Related to License Amendment Request to Adopt TSTF-5682020-09-0303 September 2020 Response to Request for Additional Information Related to License Amendment Request to Adopt TSTF-568 NMP2L2711, Byron Station; Calvert Cliffs; Clinton Power Station; LaSalle County Station; Limerick Generating Station; and Nine Mile Point Nuclear Station - Proposed Alternative to Utilize Code Case N-8792019-10-16016 October 2019 Byron Station; Calvert Cliffs; Clinton Power Station; LaSalle County Station; Limerick Generating Station; and Nine Mile Point Nuclear Station - Proposed Alternative to Utilize Code Case N-879 JAFP-19-0057, Response to Request for Additional Information - Proposed Alternative to Utilize Code Cases N-878 and N-8802019-06-0404 June 2019 Response to Request for Additional Information - Proposed Alternative to Utilize Code Cases N-878 and N-880 NMP1L3279, Response to Request for Additional Information - Proposed Alternatives to Utilize Code Cases N-878 and N-880 for Plants2019-05-0101 May 2019 Response to Request for Additional Information - Proposed Alternatives to Utilize Code Cases N-878 and N-880 for Plants RS-19-052, Supplement to the Response to Request for Additional Information Regarding License Amendment Request to Remove Operating Mode Restrictions for Performing Surveillance Testing of the Division 3 Battery and High ..2019-04-24024 April 2019 Supplement to the Response to Request for Additional Information Regarding License Amendment Request to Remove Operating Mode Restrictions for Performing Surveillance Testing of the Division 3 Battery and High .. RS-19-019, Response to Request for Additional Information Regarding Relief Request 13R-152019-04-0202 April 2019 Response to Request for Additional Information Regarding Relief Request 13R-15 JAFP-19-0006, Response to Request for Additional Information - Proposed Alternative to Utilize Code Cases N-878 and N-8802019-01-0808 January 2019 Response to Request for Additional Information - Proposed Alternative to Utilize Code Cases N-878 and N-880 RS-18-143, Supplemental Information Supporting License Amendment Requests for Approval of Changes to Emergency Plan Staffing Requirements2018-11-29029 November 2018 Supplemental Information Supporting License Amendment Requests for Approval of Changes to Emergency Plan Staffing Requirements RS-18-097, Response to Request for Additional Information and Supplemental Information-License Amendment.2018-07-27027 July 2018 Response to Request for Additional Information and Supplemental Information-License Amendment. RS-18-086, Response to Request for Additional Information Regarding License Amendment Request for Temporary Extensions to Technical Specifications Supporting Maintenance on Portions of the Core Standby Cooling System2018-07-16016 July 2018 Response to Request for Additional Information Regarding License Amendment Request for Temporary Extensions to Technical Specifications Supporting Maintenance on Portions of the Core Standby Cooling System RS-18-078, Supplemental Information Related to Application to Revise Technical Specifications to Adopt TSTF-542, Reactor Pressure Vessel Water Inventory Control2018-06-18018 June 2018 Supplemental Information Related to Application to Revise Technical Specifications to Adopt TSTF-542, Reactor Pressure Vessel Water Inventory Control RS-18-061, Response to Request for Additional Information Regarding Decommissioning Funding Plans for Independent Spent Fuel Storage Installations (Isfsis)2018-05-0202 May 2018 Response to Request for Additional Information Regarding Decommissioning Funding Plans for Independent Spent Fuel Storage Installations (Isfsis) RS-18-014, Supplement to Request to Revise Technical Specifications 2.1.1 for Minimum Critical Power Ratio Safety Limits2018-01-25025 January 2018 Supplement to Request to Revise Technical Specifications 2.1.1 for Minimum Critical Power Ratio Safety Limits RS-17-147, Response to Request for Additional Information Regarding LaSalle County Station Fourth Inservice Inspection Interval Relief Request 14R-012017-11-10010 November 2017 Response to Request for Additional Information Regarding LaSalle County Station Fourth Inservice Inspection Interval Relief Request 14R-01 RS-17-146, Additional Information Regarding License Amendment Request to Revise Suppression Pool Swell Design Analysis2017-10-19019 October 2017 Additional Information Regarding License Amendment Request to Revise Suppression Pool Swell Design Analysis RS-17-099, Response to Request for Additional Information Regarding LaSalle County Station License Amendment Request for Extension of Type a and Type C Containment Leak Rate Test Intervals (PRA Branch)2017-08-0808 August 2017 Response to Request for Additional Information Regarding LaSalle County Station License Amendment Request for Extension of Type a and Type C Containment Leak Rate Test Intervals (PRA Branch) RS-17-101, Response to Request for Additional Information Regarding License Amendment Request to Revise Suppression Pool Swell Design Analysis2017-07-28028 July 2017 Response to Request for Additional Information Regarding License Amendment Request to Revise Suppression Pool Swell Design Analysis RS-17-102, Response to Request for Supplemental Information Regarding Fourth Inservice Inspection Interval Relief Request 14R-012017-07-20020 July 2017 Response to Request for Supplemental Information Regarding Fourth Inservice Inspection Interval Relief Request 14R-01 RS-17-098, Response to Request for Additional Information Regarding License Amendment Request for Extension of Type a and Type C Containment Leak Rate Test Intervals (Sbpb Branch)2017-07-17017 July 2017 Response to Request for Additional Information Regarding License Amendment Request for Extension of Type a and Type C Containment Leak Rate Test Intervals (Sbpb Branch) RS-17-044, Response to Request for Additional Information Regarding Proposed Alternative for the Use of Encoded Phased Array Ultrasonic Examination Techniques in Lieu of Radiography2017-03-13013 March 2017 Response to Request for Additional Information Regarding Proposed Alternative for the Use of Encoded Phased Array Ultrasonic Examination Techniques in Lieu of Radiography RS-17-010, Response to Request for Additional Information Regarding LaSalle County Station Alternative Request RV-01 for the Lnservice Testing Program Fourth 10-Year Interval2017-02-0909 February 2017 Response to Request for Additional Information Regarding LaSalle County Station Alternative Request RV-01 for the Lnservice Testing Program Fourth 10-Year Interval RS-16-244, Additional Information Regarding Request for License Amendment to Address Secondary Containment Access Openings2016-12-12012 December 2016 Additional Information Regarding Request for License Amendment to Address Secondary Containment Access Openings RS-16-176, County, High Frequency Supplement to Seismic Hazard Screening Report, Response to NRC Request for Information Pursuant to 10 CFR 50.54(f) Regarding Recommendation 2.1 of the Near-Term Task Force Review of Insights from the Fukushima Dai-ic2016-12-0101 December 2016 County, High Frequency Supplement to Seismic Hazard Screening Report, Response to NRC Request for Information Pursuant to 10 CFR 50.54(f) Regarding Recommendation 2.1 of the Near-Term Task Force Review of Insights from the Fukushima Dai-ich RS-16-125, Spent Fuel Pool Evaluation Supplemental Report, Response to NRC Request for Information Pursuant to 10 CFR 50.54(f) Regarding Recommendation 2.1 of the Near-Term Task Force Review of Insights from the Fukushima Dai-ichi Accident2016-08-31031 August 2016 Spent Fuel Pool Evaluation Supplemental Report, Response to NRC Request for Information Pursuant to 10 CFR 50.54(f) Regarding Recommendation 2.1 of the Near-Term Task Force Review of Insights from the Fukushima Dai-ichi Accident RS-16-159, County, and Quad Cities - Response to Request for Additional Information Regarding License Amendment to Address Secondary Containment Access Openings2016-07-28028 July 2016 County, and Quad Cities - Response to Request for Additional Information Regarding License Amendment to Address Secondary Containment Access Openings RS-16-144, Response to Request for Additional Information on Severe Accident Mitigation Alternatives for License Renewal Environmental Review Dated July 6, 20162016-07-11011 July 2016 Response to Request for Additional Information on Severe Accident Mitigation Alternatives for License Renewal Environmental Review Dated July 6, 2016 RA-16-049, Response to Request for Additional Information Regarding Requests to Withhold Emergency Preparedness Documents from Public Disclosure2016-05-26026 May 2016 Response to Request for Additional Information Regarding Requests to Withhold Emergency Preparedness Documents from Public Disclosure RS-16-076, Response to Request for Additional Information Regarding License Amendment Request to Reduce the Reactor Steam Dome Pressure Specified in the Technical Specification 2.1.1, Reactor Core Sls.2016-04-11011 April 2016 Response to Request for Additional Information Regarding License Amendment Request to Reduce the Reactor Steam Dome Pressure Specified in the Technical Specification 2.1.1, Reactor Core Sls. 2023-07-24
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Text
4300 Winfield Road Warrenville, IL 60555 630 657 2000 Office RS-18-078 10 CFR 50.90 June 18, 2018 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555-0001 LaSalle County Station, Units 1 and 2 Renewed Facility Operating License Nos. NPF-11 and NPF-18 NRC Docket Nos. 50-373 and 50-374
Subject:
Supplemental Information Related to Application to Revise Technical Specifications to Adopt TSTF-542, "Reactor Pressure Vessel Water Inventory Control"
References:
- 1. Letter from P. R. Simpson (Exelon Generation Company, LLC (EGC)) to NRC, "Application to Revise Technical Specifications to Adopt TSTF-542,
'Reactor Pressure Vessel Water Inventory Control,'" dated December 13, 2017
- 2. Email from B. K. Vaidya (NRC) to D. M. Gullott (EGC), "LaSalle Units 1 and 2, EPID-L-2017-LLA-0415 - - Request for Additional Information (RAIs) -
License Amendment Request (LAR) to Adopt TSTF-542," dated June 12, 2018 In Reference 1, EGC submitted a request for amendments to the Technical Specifications (TS) for LaSalle County Station (LSCS), Units 1 and 2. In Reference 2, the NRC determined that additional information was required to complete its evaluation of the Reference 1 request. The requested information is provided in Attachment 1. Additionally, in Reference 2, the NRC identified two typographical issues associated with the Technical Specifications (TS) changes provided in Reference 1. The identified issues are addressed through the resubmission of the affected TS markups and revised pages in Attachments 2 and 3, respectively.
EGC has reviewed the information supporting a finding of no significant hazards consideration, and the environmental consideration, that were previously provided to the NRC in Reference 1.
The additional information provided in this submittal does not affect the bases for concluding that the proposed license amendments do not involve a significant hazards consideration. In addition, the information provided in this submittal does not affect the bases for concluding that neither an environmental impact statement nor an environmental assessment needs to be prepared in connection with the proposed amendments.
June 18, 2018 U.S. Nuclear Regulatory Commission Page 2 EGC is notifying the State of Illinois of this supplement to a previous application for a change to the TS by sending a copy of this letter and its attachment to the designated State Official in accordance with 10 CFR 50 .91 , "Notice for public comment; State consultation ," paragraph (b) .
Approval of the proposed amendments continues to be requested by December 13, 2018.
Once approved, the amendments will be implemented for LSCS, Units 1 and 2 prior to initial entry into Mode 4 during the LSCS, Unit 2 refuel outage in 2019 (i.e., L2R17), which is currently scheduled to occur in February 2019.
There are no regulatory commitments contained within this letter. Should you have any questions concerning this letter, please contact Mr. Mitchel A. Mathews at (630) 657-2819.
I declare under penalty of perjury that the foregoing is true and correct. Executed on the 18th day of June 2018.
Respectfully, Patrick R. Simpson Manager - Licensing Exelon Generation Company, LLC Attachments: 1. Supplemental Information Related to Application to Revise Technical Specifications to Adopt TSTF-542, "Reactor Pressure Vessel Water Inventory Control"
- 2. Revised Technical Specifications Page Changes (Mark-Ups)
- 3. Revised Technical Specifications Pages cc: NRC Regional Administrator, Region Ill NRC Senior Resident Inspector - LaSalle County Station Illinois Emergency Management Agency - Division of Nuclear Safety
LaSalle County Station, Units 1 and 2 Renewed Facility Operating License Nos. NPF-11 and NPF-18 NRC Docket Nos. 50-373 and 50-374 ATTACHMENT 1 SUPPLEMENTAL INFORMATION RELATED TO APPLICATION TO REVISE TECHNICAL SPECIFICATIONS TO ADOPT TSTF-542, "REACTOR PRESSURE VESSEL WATER INVENTORY CONTROL"
ATTACHMENT 1 -
SUPPLEMENTAL INFORMATION RELATED TO APPLICATION TO REVISE TECHNICAL SPECIFICATIONS TO ADOPT TSTF-542, "REACTOR PRESSURE VESSEL WATER INVENTORY CONTROL" REQUEST FOR ADDITIONAL INFORMATION APPLICATION TO REVISE TECHNICAL SPECIFICATION TO ADOPT TSTF-542 REVISION 2, "REACTOR PRESSURE VESSEL WATER INVENTORY CONTROL" EXELON GENERATION COMPANY (LLC)
LASALLE COUNTY STATION (DOCKET NOS. 50-373 and 50-374) (EPID: L-2017-LLA-0415)
By application dated December 13, 2017 (Agencywide Documents Access and Management System Accession No. ML ML17360A159), Exelon Generation Company, LLC (EGC), requests an amendment to Renewed Facility Operating License Nos. NPF-11 and NPF-18 for LaSalle County Station (LSCS), Units 1 and 2, respectively.
The proposed changes modify Technical Specifications (TSs) to adopt TSTF-542.
The NRC staff has determined that a request for additional information (RAI) is necessary to complete its review regarding the requested amendment.
EICB-RAI-1
Background:
In Attachment 2 of the LAR, on page 3.3.5.2-3, proposed LSCS TS Table 3.3.5.2-1, Function 1.a, "Low Pressure Coolant Injection-A (LPCI) and Low Pressure Core Spray (LPCS)
Subsystems, and Function 2.a, LPCI-B and LPCI-C Subsystem," Reactor Steam Dome Pressure - Low (Injection Permissive), are not consistent with TSTF-542.
For Modes 4 and 5, the equivalent function in TSTF-542 standard technical specifications (STS)
Table 3.3.5.2-1 retains the same requirement for channels per function (three) as found in STS Table 3.3.5.1-1. However, LSCS proposed to reduce the channels per function from two in current LSCS TS table 3.3.5.1-1 (Functions 1.d and 2.d) to one in proposed Table 3.3.5.2-1. This difference was not identified as a variation in Section 2.2 of Attachment 1 of the LAR.
Question:
Please provide technical justification for the proposed required channels per function for Functions 1.a and 2.a in LSCS TS Table 3.3.5.2-1.
Exelon Generation Company, LLC (EGC) Response In Attachment 2 of EGC's December 13, 2017, request to adopt Technical Specifications Task Force (TSTF) Traveler TSTF-542, EGC indicated in the proposed LaSalle County Station (LSCS), Units 1 and 2 Technical Specifications (TS), that for Table 3.3.5.2-1 Functions 1.a and 2.a, "Reactor Steam Dome Pressure Low (Injection Permissive)," only one channel is needed.
This applied to the required Low Pressure Coolant Injection-A (LPCI) and Low Pressure Core Spray (LPCS) Subsystems, and required LPCI B and LPCI C Subsystems, respectively. This proposal is related to bracketed values in the markup of the Standard Technical Specifications pages provided in TSTF-542; therefore, EGC did not initially consider this a variation. However, Page 1 of 2
ATTACHMENT 1 -
SUPPLEMENTAL INFORMATION RELATED TO APPLICATION TO REVISE TECHNICAL SPECIFICATIONS TO ADOPT TSTF-542, "REACTOR PRESSURE VESSEL WATER INVENTORY CONTROL" the following explanation provides additional clarity to aid the NRC in its review of the EGC proposal. Specifically, the instruments associated with TS Table 3.3.5.2-1, Functions 1.a and 2.a are installed in a parallel configuration, so only one of the two channels for these functions is required to satisfy the logic and provide the permissive for the associated subsystem.
Moreover, if the required channel is found to be inoperable, Limiting Condition for Operation 3.3.5.2, "RPV Water Inventory Control Instrumentation," Condition C applies. Required Action C.1, requires the channel to be placed in trip within one hour, which will allow manual operation of the associated subsystem. Therefore, for manual operation of a required subsystems in Modes 4 and 5 as proposed, only one instrument channel is needed for Table 3.3.5.2-1, Functions 1.a and 2.a.
Additional Corrections:
The NRC staff noted that the following corrections are needed to the TS Mark-up Pages submitted in the Application:
- 1. Attachment 2 of the License Amendment Request (LAR), markup page 3.5.2-1, Required Action B.1 As proposed: B.1 Initiate action to establish a method of water injection capable of operating without offsite power.
'Electrical' is missing between offsite and power
- 2. Attachment 2 of the LAR, markup page 3.5.2-2, Condition C is missing period.
EGC Response Updated TS Page Changes (i.e., markups) and the corresponding revised TS Pages (i.e., clean pages) that address the identified issues have been included as Attachments 2 and 3, respectively.
Page 2 of 2
LaSalle County Station, Units 1 and 2 Supplemental Information Related to Application to Revise Technical Specifications to Adopt TSTF-542, "Reactor Pressure Vessel Water Inventory Control" ATTACHMENT 2 REVISED TECHNICAL SPECIFICATIONS PAGE CHANGES (MARK-UPS) 3.5.2-1 3.5.2-2
RPV Water Inventory ControlECCSShutdown 3.5.2 3.5 EMERGENCY CORE COOLING SYSTEMS (ECCS), REACTOR PRESSURE VESSEL (RPV)
WATER INVENTORY CONTROL, AND REACTOR CORE ISOLATION COOLING (RCIC)
SYSTEM 3.5.2 RPV Water Inventory ControlECCSShutdown LCO 3.5.2 DRAIN TIME of RPV water inventory to the top of active fuel (TAF) shall be hours
AND OneTwo ECCS injection/spray subsystems shall be OPERABLE.
NOTE----------------------------
One A Llow Ppressure Ccoolant Iinjection (LPCI) subsystem may be considered OPERABLE during alignment and operation for decay heat removal, if capable of being manually realigned and not otherwise inoperable.
APPLICABILITY: MODES 4 and, MODE 5 except with the spent fuel storage pool gates removed and water level t 22 ft over the top of the reactor pressure vessel flange.
ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A. One rRequired ECCS A.1 Restore required ECCS 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> injection/spray injection/spray subsystem inoperable. subsystem to OPERABLE status.
B. Required Action and B.1 Initiate action to Immediately associated Completion suspend operations Time of Condition A with a potential for not met. draining the reactor vessel (OPDRVs)establish a method of water injection capable of operating without offsite electrical power.
(continued)
LaSalle 1 and 2 3.5.2-1 Amendment No. 147/133
RPV Water Inventory ControlECCSShutdown 3.5.2 ACTIONS (continued)
CONDITION REQUIRED ACTION COMPLETION TIME C. Two required ECCS C.1 Initiate action to Immediately injection/spray suspend OPDRVs.
subsystems inoperable.
AND C.2 Restore one required 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> ECCS injection/spray subsystem to OPERABLE status.
C DRAIN TIME hours C Verify secondary 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> and hours containment boundary is capable of being established in less than the DRAIN TIME
AND C Verify each secondary 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> containment penetration flow path is capable of being isolated in less than the DRAIN TIME
AND C Verify one standby 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> gas treatment subsystem is capable of being placed in operation in less than the DRAIN TIME
(continued)
LaSalle 1 and 2 3.5.2-2 Amendment No. 147/133
LaSalle County Station, Units 1 and 2 Supplemental Information Related to Application to Revise Technical Specifications to Adopt TSTF-542, "Reactor Pressure Vessel Water Inventory Control" ATTACHMENT 3 REVISED TECHNICAL SPECIFICATIONS PAGES 3.5.2-1 3.5.2-2
RPV Water Inventory Control 3.5.2 3.5 EMERGENCY CORE COOLING SYSTEMS (ECCS), REACTOR PRESSURE VESSEL (RPV)
WATER INVENTORY CONTROL, AND REACTOR CORE ISOLATION COOLING (RCIC)
SYSTEM 3.5.2 RPV Water Inventory Control LCO 3.5.2 DRAIN TIME of RPV water inventory to the top of active fuel (TAF) shall be KRXUV
AND One ECCS injection/spray subsystem shall be OPERABLE.
NOTE----------------------------
A Low Pressure Coolant Injection (LPCI) subsystem may be considered OPERABLE during alignment and operation for decay heat removal, if capable of being manually realigned and not otherwise inoperable.
APPLICABILITY: MODES 4 and 5.
ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A. Required ECCS A.1 Restore required ECCS 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> injection/spray injection/spray subsystem inoperable. subsystem to OPERABLE status.
B. Required Action and B.1 Initiate action to Immediately associated Completion establish a method of Time of Condition A water injection not met. capable of operating without offsite electrical power.
(continued)
LaSalle 1 and 2 3.5.2-1 Amendment No. 147/133
RPV Water Inventory Control 3.5.2 ACTIONS (continued)
CONDITION REQUIRED ACTION COMPLETION TIME C. DRAIN TIME KRXUV C.1 Verify secondary 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> DQGKRXUV. containment boundary is capable of being established in less than the DRAIN TIME.
AND C.2 Verify each secondary 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> containment penetration flow path is capable of being isolated in less than the DRAIN TIME.
AND C.3 Verify one standby 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> gas treatment subsystem is capable of being placed in operation in less than the DRAIN TIME.
(continued)
LaSalle 1 and 2 3.5.2-2 Amendment No. 147/133