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| {{#Wiki_filter:Watts Bar Nuclear Plant Watts Bar Nuclear Plant (WBN) | | {{#Wiki_filter:Watts Bar Nuclear Plant |
| Pre-submittal Meeting for Expedited License Amendment Request Main Control Room (MCR) Chiller Completion Time Extension February 15, 2023
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| Agenda | | Watts Bar Nuclear Plant (WBN) |
| | Pre-submittal Meeting for Expedited License Amendment Request Main Control Room (MCR) Chiller Completion Time Extension |
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| | February 15, 2023 Agenda |
| * Introduction | | * Introduction |
| * Background | | * Background |
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| * Revised MCR Chiller Replacement Schedule | | * Revised MCR Chiller Replacement Schedule |
| * Proposed Technical Specification Changes | | * Proposed Technical Specification Changes |
| * Changes to MCR Temporary Chilled Water Equipment Description | | * Changes to MCR TDescription emporary Chilled Water Equipment |
| * Schedule Milestones | | * Schedule Milestones |
| * Closing Remarks 2 | | * Closing Remarks |
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| Introduction | | 2 Introduction |
| * The purpose of this meeting is to discuss a proposed expedited license amendment request (LAR) for WBN Units 1 and 2. | | * The purpose of this meeting is to discuss a proposed expedited license amendment request (LAR) for WBN Units 1 and 2. |
| * TVA is requesting an expedited license amendment for a revision to the one-time footnotes to WBN Units 1 and 2 Technical Specification (TS) 3.7.11, Control Room Emergency Air Temperature Control System (CREATCS), Required Actions A.1 and E.1 to reflect a change in the scheduling dates for the CREATCS chillers [main control room chillers (MCR) A and B]. | | * TVA is requesting an expedited license amendment for a revision to the one-time footnotes to WBN Units 1 and 2 Technical Specification (TS) 3.7.11, Control Room Emergency Air Temperature Control System (CREATCS), Required Actions A.1 and E.1 to reflect a change in the scheduling dates for the CREATCS chillers [main control room chillers (MCR) A and B]. |
| * There are no technical changes or changes to the TS compensatory measures associated with the proposed amendment. | | * There are no technical changes or changes to the TS compensatory measures associated with the proposed amendment. |
| * The proposed change is due to delays in the vendor delivery of the MCR CREATCS chillers, which were beyond the control of TVA. | | * The proposed change is due to delays in the vendor delivery of the MCR CREATCS chillers, which were beyond the control of TVA. |
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| ===Background=== | | ===Background=== |
| * 5/19/2020 - TVA submits the LAR to modify the WBN Units 1 and TS for MCR completion time extension (ML20140A342). LAR includes technical information on the MCR CREATCS replacement project including the temporary chilled water system to be utilized during the MCR CREATCS replacement project. | | * 5/19/2020 - TVA submits the LAR to modify the WBN Units 1 and TS for MCR completion time extension (ML20140A342). LAR includes technical information on the MCR CREATCS replacement project including the temporary chilled water system to be utilized during the MCR CREATCS replacement project. |
| * 9/2/2020-10/1/2020 - NRC conducts an audit of the LAR (ML21012A084) | | * 9/2/2020- 10/1/2020 - NRC conducts an audit of the LAR (ML21012A084) |
| * 12/16/2020 - TVA responds to NRC RAI (ML20351A424) | | * 12/16/2020 - TVA responds to NRC RAI (ML20351A424) |
| * 5/5/2021 - NRC approves the LAR (ML21078A484) l 4 | | * 5/5/2021 - NRC approves the LAR (ML21078A484) |
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| Current TS Requirements Units 1 and 2 - TS 3.7.11 Footnote for Action A.1 l 5 | | l 4 Current TS Requirements Units 1 and 2 - TS 3.7.11 Footnote for Action A.1 |
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| Current TS Requirements Units 1 and 2 - TS 3.7.11 Footnote for Action E.1 l 6 | | l 5 Current TS Requirements Units 1 and 2 - TS 3.7.11 Footnote for Action E.1 |
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| Reason for the Proposed Change | | l 6 Reason for the Proposed Change |
| * Due to unforeseen supplier chain issues, TVA is unable to meet the current TS date range of May 1, 2022, to May 1, 2023, for the MCR chiller replacement as required by the existing footnotes to the Completion Time for WBN Units 1 and 2 TS 3.7.11, Required Actions A.1 and E.1. | | * Due to unforeseen supplier chain issues, TVA is unable to meet the current TS date range of May 1, 2022, to May 1, 2023, for the MCR chiller replacement as required by the existing footnotes to the Completion Time for WBN Units 1 and 2 TS 3.7.11, Required Actions A.1 and E.1. |
| * As shown in Table 1, the new MCR chillers have not yet been received and are not scheduled to commence installation until the third quarter 2023. | | * As shown in Table 1, the new MCR chillers have not yet been received and are not scheduled to commence installation until the third quarter 2023. |
| * TVA has received confirmation from the supplier vendor that they can currently meet the delivery dates for the MCR chillers. | | * TVA has received confirmation from the supplier vendor that they can currently meet the delivery dates for the MCR chillers. |
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| Revised MCR Chiller Replacement Schedule Table 1 Revised WBN MCR Chiller Replacement Timeline Activity Date U1R18 Outage 4/14/2023-5/13/2023 Qualification of MCR Chillers 4/28/2023 New MCR B Chiller at WBN 5/3/2023 New MCR A Chiller at WBN 5/9/2023 Replace existing MCR B chiller 7/17/2023 - 8/24/2023 U2R5 Outage 11/03/2023 - 12/02/2023 Replace existing MCR A chiller 1/29/2024 - 3/24/2024 U1R19 Outage 11/1/2024-12/13/2024 l 8 | | l 7 Revised MCR Chiller Replacement Schedule |
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| | Table 1 Revised WBN MCR Chiller Replacement Timeline |
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| Proposed TS Changes | | Activity Date U1R18 Outage 4/14/2023-5/13/2023 Qualification of MCR Chillers 4/28/2023 New MCR B Chiller at WBN 5/3/2023 New MCR A Chiller at WBN 5/9/2023 Replace existing MCR B chiller 7/17/2023 - 8/24/2023 U2R5 Outage 11/03/2023 - 12/02/2023 Replace existing MCR A chiller 1/29/2024 - 3/24/2024 U1R19 Outage 11/1/2024-12/13/2024 |
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| | l 8 Proposed TS Changes |
| * Revise the current start and end dates in the footnotes to TS 3.7.11, Required Actions A.1 and E.1 to July 1, 2023, to December 31, 2024, respectively (provides a margin for any potential further schedule delays). | | * Revise the current start and end dates in the footnotes to TS 3.7.11, Required Actions A.1 and E.1 to July 1, 2023, to December 31, 2024, respectively (provides a margin for any potential further schedule delays). |
| Reflects the current MCR replacement schedule (allowing for margin for any potential further schedule delays). | | Reflects the current MCR replacement schedule (allowing for margin for any potential further schedule delays). |
| Requires expedited NRC review and approval of the LAR because NRC approval would be required no later than June 15, 2023 (allowing 15 days for implementation). | | Requires expedited NRC review and approval of the LAR because NRC approval would be required no later than June 15, 2023 (allowing 15 days for implementation). |
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| Proposed Technical Specification Change Units 1 and 2 - TS 3.7.11 Footnote for Action A.1 l 10 PLACE THE TITLE OF THE PRESENTATION HERE | | l 9 Proposed Technical Specification Change |
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| Proposed Technical Specification Change Units 1 and 2 - TS 3.7.11 Footnote for Action E.1 l 11 PLACE THE TITLE OF THE PRESENTATION HERE
| | Units 1 and 2 - TS 3.7.11 Footnote for Action A.1 |
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| Changes to MCR Temporary Chilled Water Equipment Description | | l 10 PLACE THE TITLE OF THE PRESENTATION HERE Proposed Technical Specification Change |
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| | Units 1 and 2 - TS 3.7.11 Footnote for Action E.1 |
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| | l 11 PLACE THE TITLE OF THE PRESENTATION HERE Changes to MCR Temporary Chilled Water Equipment Description |
| * There are no technical changes to the replacement planned MCR CREATCS chillers as described in the previous LAR (ML20140A342) and the NRC safety Evaluation (SE) (ML21078A484). | | * There are no technical changes to the replacement planned MCR CREATCS chillers as described in the previous LAR (ML20140A342) and the NRC safety Evaluation (SE) (ML21078A484). |
| * Differences between the currently planned MCR temporary chiller equipment description and the MCR temporary chiller equipment description in Section 3.1 to the previous LAR and the NRC Regulatory Audit Summary (ML21012A084) are provided in Tables 2 and 3, respectively. There are no changes to the MCR temporary chiller equipment description in the previous TVA RAI response (ML20351A424). | | * Differences between the currently planned MCR temporary chiller equipment description and the MCR temporary chiller equipment description in Section 3.1 to the previous LAR and the NRC Regulatory Audit Summary (ML21012A084) are provided in Tables 2 and 3, respectively. There are no changes to the MCR temporary chiller equipment description in the previous TVA RAI response (ML20351A424). |
| * The compensatory measures listed in the previous LAR and the NRC SE remain unchanged. | | * The compensatory measures listed in the previous LAR and the NRC SE remain unchanged. |
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| Table 2 Item No. Description in LAR Currently Planned Installation Reason for Change Significance 1 Page E6 of 24, paragraph 1 describes, The inlet and outlet piping will To allow more efficient This new configuration The chilled water piping inlet and no longer be removed. (less time) transition is functionally outlet to the AHUs is removed and Permanent branch connections between the temporary equivalent to the replaced with temporary piping for the with isolation valves are being and permanent chillers configuration described temporary chiller system. added via permanent which will be in the LAR and is modification to the inlet and advantageous during expected to benefit the outlet piping to the AHUs to the post modification project by reducing the allow connection of the test (PMT) window and time in the TS Required temporary chiller without should reduce time in Action Completion removal of piping. the TS Required Action Time. | | l 12 Table 2 Item No. Description in LAR Currently Planned Installation Reason for Change Significance 1 Page E6 of 24, paragraph 1 describes, The inlet and outlet piping will To allow more efficient This new configuration The chilled water piping inlet and no longer be removed. (less time) transition is functionally outlet to the AHUs is removed and Permanent branch connections between the temporary equivalent to the replaced with temporary piping for the with isolation valves are being and permanent chillers configuration described temporary chiller system. added via permanent which will be in the LAR and is modification to the inlet and advantageous during expected to benefit the outlet piping to the AHUs to the post modification project by reducing the allow connection of the test (PMT) window and time in the TS Required temporary chiller without should reduce time in Action Completion removal of piping. the TS Required Action Time. |
| Completion Time. | | Completion Time. |
| 2 Page E6 of 24, Section 3.2 describes The temporary chiller The temporary chiller These items were major equipment and includes Chilled installation may have as many installation includes included for water Pump. as three pumps. Additionally, multiple pumps to meet completeness of one major equipment item necessary hydraulic information. | | 2 Page E6 of 24, Section 3.2 describes The temporary chiller The temporary chiller These items were major equipment and includes Chilled installation may have as many installation includes included for water Pump. as three pumps. Additionally, multiple pumps to meet com pleteness of one major equipment item necessary hydraulic information. |
| that was not included in the conditions. The LAR description is a transfer temporary chiller switch, to allow transfer installation includes a between plant power and the transfer switch. | | that was not included in the conditions. The LAR description is a transfer temporary chiller switch, to allow transfer installation includes a between plant power and the transfer switch. |
| diesel generator (DG) for the temporary chiller. | | diesel generator (DG) for the temporary chiller. |
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| Table 2 Item No. Description in LAR Currently Planned Installation Reason for Change Significance 3 Page E6 of 24, Section 3.2.1 The DG referred to in the LAR (a Clarification on the Both the rented refers to a 320kW DG. Section rented Aggreko chiller) is rated at rating of the Aggreko Aggreko equipment 3.2.4 also refers to the 320kW 320kW at 50Hz. The rating of this DG and to include and the Carrier/CAT DG. DG is 300kW at 60Hz, which is reference to the CAT equipment have adequate for the temporary/rented generator which the adequate electrical and Aggreko chiller equipment. A site has purchased, cooling capacity to Caterpillar (CAT) generator and along with a Carrier meet the requirements Carrier chiller have also been chiller. for the temporary chiller purchased by the site to reduce system. | | l 13 Table 2 Item No. Description in LAR Currently Planned Installation Reason for Change Significance 3 Page E6 of 24, Section 3.2.1 The DG referred to in the LAR (a Clarification on the Both the rented refers to a 320kW DG. Section rented Aggreko chiller) is rated at rating of the Aggreko Aggreko equipment 3.2.4 also refers to the 320kW 320kW at 50Hz. The rating of this DG and to include and the Carrier/CAT DG. DG is 300kW at 60Hz, which is reference to the CAT equipment have adequate for the temporary/rented generator which the adequate electrical and Aggreko chiller equipment. A site has purchased, cooling capacity to Caterpillar (CAT) generator and along with a Carrier meet the requirements Carrier chiller have also been chiller. for the temporary chiller purchased by the site to reduce system. |
| reliance on rented equipment. The ratings (tons and kW) of the CAT/Carrier equipment exceed the ratings of the rented Aggreko equipment. | | reliance on rented equipment. The ratings (tons and kW ) of the CAT/Carrier equipment exceed the ratings of the rented Aggreko equipment. |
| 4 Page E6 of 24, Section 3.2.1, Permanent branch connections have To allow more efficient This new configuration second paragraph states, been added to the AHU piping, (less time) transition is functionally Connection to the AHU coils will Therefore, it is more accurate to state between the temporary equivalent to the be made by isolating the chilled "Connection to the AHU coils is made and permanent chillers configuration described water piping, removing the flex via permanent flanged branch which will be in the LAR and is hoses between the AHU coils connections with an isolation valve, advantageous during expected to benefit the and the chilled water piping and which were added as part of the the PMT window and project by reducing the then reconnecting the temporary chiller replacement project should reduce time in time in the TS Required chilled water supply and return subsequent to the submittal of the the TS Required Action Action Completion hoses to the AHU coils using LAR." Completion Time. Time. | | 4 Page E6 of 24, Section 3.2.1, Permanent branch connections have To allow more efficient This new configuration second paragraph states, been added to the AHU piping, (less time) transition is functionally Connection to the AHU coils will Therefore, it is more accurate to state between the temporary equivalent to the be made by isolating the chilled "Connection to the AHU coils is made and permanent chillers configuration described water piping, removing the flex via permanent flanged branch which will be in the LAR and is hoses between the AHU coils connections with an isolation valve, advantageous during expected to benefit the and the chilled water piping and which were added as part of the the PMT window and project by reducing the then reconnecting the temporary chiller replacement project should reduce time in time in the TS Required chilled water supply and return subsequent to the submittal of the the TS Required Action Action Completion hoses to the AHU coils using LAR." Completion Time. Time. |
| l 14 existing flange connections. | | l 14 existing flange connections. |
| | Table 2 Item No. Description in LAR Currently Planned Installation Reason for Change Significance 5 Page E7 of 24, Section 3.2.2 Hose sizes used in the temporary Final configuration to Larger hose sizes meet refers to 2.5 inch() diameter chilled water system are of various meet hydraulic hydraulic requirements supply and return hoses. sizes (3, 4 and 6) requirements. and offer less resistance compared to smaller hose sizes. |
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| Table 2 Item No. Description in LAR Currently Planned Installation Reason for Change Significance 5 Page E7 of 24, Section 3.2.2 Hose sizes used in the temporary Final configuration to Larger hose sizes meet refers to 2.5 inch() diameter chilled water system are of various meet hydraulic hydraulic requirements supply and return hoses. sizes (3, 4 and 6) requirements. and offer less resistance compared to smaller hose sizes.
| | 6 Page E7 of 24, Section 3.2.3 As noted in the NRC audit summary, Provide flexibility in Both locations are a states, The equipment "The two potential locations with chiller locations. similar distance (hose associated with the temporary respect to assumed plant north are run). Both locations chiller system will be located in (a) due west of the Auxiliary Building are also sufficiently the yard west of the Auxiliary or (b) northwest of the Unit 1 distant from the plant Building and in the Control Containment." air intakes. |
| 6 Page E7 of 24, Section 3.2.3 As noted in the NRC audit summary, Provide flexibility in Both locations are a states, The equipment "The two potential locations with chiller locations. similar distance (hose associated with the temporary respect to assumed plant north are run). Both locations chiller system will be located in (a) due west of the Auxiliary Building are also sufficiently the yard west of the Auxiliary or (b) northwest of the Unit 1 distant from the plant Building and in the Control Containment." air intakes. | |
| Building (Elevation 729.0 feet). | | Building (Elevation 729.0 feet). |
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| Table 2 Item No. Description in LAR Currently Planned Installation Reason for Change Significance 7 Page E7 of 24, Section 3.2.3 This statement is intended to mean Clarification. Clarification. | | l 15 Table 2 Item No. Description in LAR Currently Planned Installation Reason for Change Significance 7 Page E7 of 24, Section 3.2.3 This statement is intended to mean Clarification. Clarification. |
| states, the temporary chiller as required. The design package system will be protected from states that if the chiller is deployed freezing. during winter months, steps should be taken to avoid freezing (e.g., | | states, the temporary chiller as required. The design package system will be protected from states that if the chiller is deployed freezing. during winter months, steps should be taken to avoid freezing (e.g., |
| draining lines when not in use, use of heat tape and insulation). | | draining lines when not in use, use of heat tape and insulation). |
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| Table 3 Item No. Description in NRC Audit Report Currently Planned Installation Reason for Change Significance 1 Page 4 of 7 of the Audit Report Permanent branch connections have To allow more efficient This new configuration states, Connection to the AHU been added to the AHU piping; (less time) transition is functionally coils will be made by isolating therefore, a current statement would between the temporary equivalent to the the chilled water piping, be, "Connection to the AHU coils is and permanent chillers configuration described removing the flex hoses between made via permanent flanged branch which will be in the LAR and is the AHU coils and the chilled connections with an isolation valve, advantageous during expected to benefit the water piping and then which were added as part of the the PMT window and project by reducing the reconnecting the temporary chiller replacement project should reduce time in time in the TS Required chilled water supply and return subsequent to the submittal of the the TS Required Action Action Completion hoses to the AHU coils using LAR." Completion Time. Time. | | l 16 Table 3 Item No. Description in NRC Audit Report Currently Planned Installation Reason for Change Significance 1 Page 4 of 7 of the Audit Report Permanent branch connections have To allow more efficient This new configuration states, Connection to the AHU been added to the AHU piping; (less time) transition is functionally coils will be made by isolating therefore, a current statement would between the temporary equivalent to the the chilled water piping, be, "Connection to the AHU coils is and permanent chillers configuration described removing the flex hoses between made via permanent flanged branch which will be in the LAR and is the AHU coils and the chilled connections with an isolation valve, advantageous during expected to benefit the water piping and then which were added as part of the the PMT window and project by reducing the reconnecting the temporary chiller replacement project should reduce time in time in the TS Required chilled water supply and return subsequent to the submittal of the the TS Required Action Action Completion hoses to the AHU coils using LAR." Completion Time. Time. |
| existing flange connections. | | existing flange connections. |
| 2 Page 5 of 7 of the Audit Report The CAT DG has a 300 gallon tank, To reflect the capacity The run time for the states, The temporary chiller which provides a 24-hour run time of the CAT DG which CAT DG is longer than skid DG fuel oil tanks capacity which is conservative compared to would be used with the the run time for the provides a 12-hour run time for the value cited here. Carrier chiller. Aggreko DG, which is the chiller skid without fuel oil conservative to what is replenishment, which allows the described in the Audit licensee time for replenishing Report. | | 2 Page 5 of 7 of the Audit Report The CAT DG has a 300 gallon tank, To reflect the capacity The run time for the states, The temporary chiller which provides a 24-hour run time of the CAT DG which CAT DG is longer than skid DG fuel oil tanks capacity which is conservative compared to would be used with the the run time for the provides a 12-hour run time for the value cited here.Carrier chiller.Aggreko DG, which is the chiller skid without fuel oil conservative to what is replenishment, which allows the described in the Audit licensee time for replenishing Report. |
| measures. | | measures. |
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| Schedule Milestones | | l 17 Schedule Milestones |
| * TVA to submit LAR to NRC by February 28, 2023. | | * TVA to submit LAR to NRC by February 28, 2023. |
| * Request expedited NRC approval by June 15, 2023. | | * Request expedited NRC approval by June 15, 2023. |
| * 15-day implementation following NRC approval. | | * 15-day implementation following NRC approval. |
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Letter Sequence Meeting |
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MONTHYEARPMNS20221292, Meeting with Tennessee Valley Authority to Discuss Proposed License Amendment Request2023-01-11011 January 2023
Meeting with Tennessee Valley Authority to Discuss Proposed License Amendment Request
Project stage: Meeting
ML23010A2542023-01-12012 January 2023
Pre-submittal Meeting for Expedited License Amendment Request Main Control Room (MCR) Chiller Completion Time Extension -- Meeting Slides
Project stage: Meeting
ML23044A5182023-02-15015 February 2023
Pre-Submittal Meeting Slides for Expedited License Amendment Request Re Main Control Room Chiller Completion Time Extension
Project stage: Meeting
ML23041A3562023-02-15015 February 2023
February 15, 2023 Pre-submittal Meeting for Expedited License Amendment Request Main Control Room (MCR) Chiller Completion Time Extension (EPID L-2022-LRM-0098) (Slides)
Project stage: Meeting
ML23055A4562023-03-0909 March 2023
Summary of February 15, 2023, Public Meeting with Tennessee Valley Authority Regarding Proposed Expedited License Amendment Request for Watts Bar Nuclear Plant, Units 1 and 2
Project stage: Meeting
2023-01-12
[Table View] |
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Category:Meeting Agenda
MONTHYEARML24323A0622024-11-19019 November 2024
Pre-Submittal Meeting for Proposed Alternative Request WBN-2-ISI-02
PMNS20241383, Meeting with Tennessee Valley Authority to Discuss a Proposed Alternative Request for Watts Bar Nuclear Plant, Unit 22024-11-0707 November 2024
Meeting with Tennessee Valley Authority to Discuss a Proposed Alternative Request for Watts Bar Nuclear Plant, Unit 2
PMNS20241229, Meeting with Tennessee Valley Authority to Discuss a Proposed License Amendment Request for Sequoyah Nuclear Plant, Units 1 and 2, and Watts Bar Nuclear Plant, Units 1 and 22024-10-0303 October 2024
Meeting with Tennessee Valley Authority to Discuss a Proposed License Amendment Request for Sequoyah Nuclear Plant, Units 1 and 2, and Watts Bar Nuclear Plant, Units 1 and 2
ML24228A2312024-08-15015 August 2024
TVA Meeting Slides for August 19 Public Meeting Re QAPD Supplement
ML24225A2542024-08-14014 August 2024
August 14, 2024 - TVA Pre-Sub Meeting Presentation - Sequoyah, Units 1 and 2; Watts Bar, Units 1 and 2 - License Amendment Request to Revise TS 3.5.2 ECCS - Operating
PMNS20240978, Meeting with Tennessee Valley Authority to Discuss a Proposed Sequoyah Nuclear Plant and Watts Bar Nuclear Plant License Amendment Request to Revise Technical Specs 3.5.2, Note 1 Related to the Residual Heat Removal System2024-08-13013 August 2024
Meeting with Tennessee Valley Authority to Discuss a Proposed Sequoyah Nuclear Plant and Watts Bar Nuclear Plant License Amendment Request to Revise Technical Specs 3.5.2, Note 1 Related to the Residual Heat Removal System
PMNS20241000, Meeting with Tennessee Valley Authority to Discuss Proposed Changes to the Nuclear Quality Assurance Program2024-08-0606 August 2024
Meeting with Tennessee Valley Authority to Discuss Proposed Changes to the Nuclear Quality Assurance Program
PMNS20240831, Meeting with Tennessee Valley Authority to Discuss Proposed Changes to the Nuclear Quality Assurance Program2024-06-24024 June 2024
Meeting with Tennessee Valley Authority to Discuss Proposed Changes to the Nuclear Quality Assurance Program
PMNS20240663, Meeting with Tennessee Valley Authority to Discuss a Proposed License Amendment Request to Revise the Watts Bar Nuclear Plant, Units 1 and 2, Technical Specifications2024-05-0909 May 2024
Meeting with Tennessee Valley Authority to Discuss a Proposed License Amendment Request to Revise the Watts Bar Nuclear Plant, Units 1 and 2, Technical Specifications
PMNS20240568, Meeting with Tennessee Valley Authority to Discuss a Proposed License Amendment Request to Revise the Watts Bar Nuclear Plant, Units 1 and 2, Technical Specifications2024-04-24024 April 2024
Meeting with Tennessee Valley Authority to Discuss a Proposed License Amendment Request to Revise the Watts Bar Nuclear Plant, Units 1 and 2, Technical Specifications
PMNS20240350, Annual Assessment Virtual Public Meeting2024-03-11011 March 2024
Annual Assessment Virtual Public Meeting
PMNS20240344, Annual Assessment Public Poster Session and Open House Meeting2024-03-0707 March 2024
Annual Assessment Public Poster Session and Open House Meeting
ML24044A0872024-02-14014 February 2024
TVA Slides - Watts Bar Nuclear Plant Pre-Submittal Meeting for License Amendment Request to Revise TS 3.7.11, Main Control Room Area Chilled Water System
PMNS20240088, Meeting with Tennessee Valley Authority to Discuss a Proposed License Amendment Request to Revise the Watts Bar Nuclear Plant Technical Specifications2024-01-30030 January 2024
Meeting with Tennessee Valley Authority to Discuss a Proposed License Amendment Request to Revise the Watts Bar Nuclear Plant Technical Specifications
PMNS20231329, Meeting with Tennessee Valley Authority to Discuss Proposed License Amendment Request for the Browns Ferry, Sequoyah, and Watts Bar Nuclear Plants2023-11-28028 November 2023
Meeting with Tennessee Valley Authority to Discuss Proposed License Amendment Request for the Browns Ferry, Sequoyah, and Watts Bar Nuclear Plants
ML23291A1562023-10-18018 October 2023
NRC Pre-Submittal Meeting Watts Bar & Sequoyah LAR, TVA Presentation Slides
PMNS20231126, Meeting with Tennessee Valley Authority to Discuss a Proposed License Amendment Request for Sequoyah Nuclear Plant, Units 1 and 2, and Watts Bar Nuclear Plant, Units 1 and 22023-10-18018 October 2023
Meeting with Tennessee Valley Authority to Discuss a Proposed License Amendment Request for Sequoyah Nuclear Plant, Units 1 and 2, and Watts Bar Nuclear Plant, Units 1 and 2
PMNS20231024, Meeting with Tennessee Valley Authority to Discuss a Proposed License Amendment Request for the Watts Bar Nuclear Plant, Units 1 and 22023-09-18018 September 2023
Meeting with Tennessee Valley Authority to Discuss a Proposed License Amendment Request for the Watts Bar Nuclear Plant, Units 1 and 2
PMNS20230916, Meeting with Tennessee Valley Authority to Discuss a Proposed License Amendment Request for the Watts Bar Nuclear Plant, Units 1 and 22023-08-31031 August 2023
Meeting with Tennessee Valley Authority to Discuss a Proposed License Amendment Request for the Watts Bar Nuclear Plant, Units 1 and 2
ML23178A0832023-07-10010 July 2023
Pre-submittal Meeting Slides for License Amendment Request to Revise Technical Specification Table 1.1-1 Regarding the Required Number of Fully Tensioned Reactor Pressure Vessel Head Closure Studs
PMNS20230795, Meeting with Tennessee Valley Authority to Discuss a Proposed License Amendment Request for the Watts Bar Nuclear Plant, Units 1 and 22023-06-30030 June 2023
Meeting with Tennessee Valley Authority to Discuss a Proposed License Amendment Request for the Watts Bar Nuclear Plant, Units 1 and 2
PMNS20230712, Meeting with Tennessee Valley Authority to Discuss Proposed License Amendment Request for the Browns Ferry, Sequoyah, and Watts Bar Nuclear Plants2023-06-12012 June 2023
Meeting with Tennessee Valley Authority to Discuss Proposed License Amendment Request for the Browns Ferry, Sequoyah, and Watts Bar Nuclear Plants
PMNS20230549, Annual Assessment Virtual Meeting for the 2022 Assessment Period2023-04-25025 April 2023
Annual Assessment Virtual Meeting for the 2022 Assessment Period
PMNS20230446, Annual Assessment Public Poster Session and Openhouse Meeting2023-04-17017 April 2023
Annual Assessment Public Poster Session and Openhouse Meeting
ML23044A5182023-02-15015 February 2023
Pre-Submittal Meeting Slides for Expedited License Amendment Request Re Main Control Room Chiller Completion Time Extension
ML23041A3562023-02-15015 February 2023
February 15, 2023 Pre-submittal Meeting for Expedited License Amendment Request Main Control Room (MCR) Chiller Completion Time Extension (EPID L-2022-LRM-0098) (Slides)
PMNS20230127, Meeting with Tennessee Valley Authority Regarding Proposed License Amendment Request for Watts Bar Nuclear Plant, Units 1 and 2, to Increase the Allowable Number of Tritium Producing Burnable Absorber Rods2023-02-13013 February 2023
Meeting with Tennessee Valley Authority Regarding Proposed License Amendment Request for Watts Bar Nuclear Plant, Units 1 and 2, to Increase the Allowable Number of Tritium Producing Burnable Absorber Rods
PMNS20221292, Meeting with Tennessee Valley Authority to Discuss Proposed License Amendment Request2023-01-11011 January 2023
Meeting with Tennessee Valley Authority to Discuss Proposed License Amendment Request
ML22318A1042022-11-14014 November 2022
Pre-submittal Meeting for American Society of Mechanical Engineers Boiler and Pressure Vessel Code Section XI, Request for Alternative WBN-2-ISI-01 Slide Presentation
PMNS20221152, Meeting with Tennessee Valley Authority to Discuss a Proposed Alternative Request for Watts Bar Nuclear Plant, Unit 22022-11-0303 November 2022
Meeting with Tennessee Valley Authority to Discuss a Proposed Alternative Request for Watts Bar Nuclear Plant, Unit 2
PMNS20220956, Meeting with Tennessee Valley Authority to Discuss Proposed License Amendment Request2022-09-20020 September 2022
Meeting with Tennessee Valley Authority to Discuss Proposed License Amendment Request
PMNS20220531, Meeting with Tennessee Valley Authority to Discuss a Proposed License Amendment Request for Sequoyah and Watts Bar Nuclear Plants2022-05-19019 May 2022
Meeting with Tennessee Valley Authority to Discuss a Proposed License Amendment Request for Sequoyah and Watts Bar Nuclear Plants
PMNS20220379, Meeting with Tennessee Valley Authority to Discuss a Proposed Exemption Request for Watts Bar Nuclear Plant, Unit 22022-04-0808 April 2022
Meeting with Tennessee Valley Authority to Discuss a Proposed Exemption Request for Watts Bar Nuclear Plant, Unit 2
PMNS20220314, Meeting with Tennessee Valley Authority to Discuss a Proposed Alternative Request for Sequoyah and Watts Bar Nuclear Plants2022-03-31031 March 2022
Meeting with Tennessee Valley Authority to Discuss a Proposed Alternative Request for Sequoyah and Watts Bar Nuclear Plants
PMNS20220285, Annual Assessment Meeting2022-03-29029 March 2022
Annual Assessment Meeting
PMNS20211575, Pre-Submittal Meeting with Tennessee Valley Authority Regarding Watts Bar Nuclear Plant, Unit 1, Proposed License Amendment Request2022-01-18018 January 2022
Pre-Submittal Meeting with Tennessee Valley Authority Regarding Watts Bar Nuclear Plant, Unit 1, Proposed License Amendment Request
PMNS20211571, Meeting with Tennessee Valley Authority Regarding Watts Bar Nuclear Plant, Units 1 and 2, Tritium Producing Burnable Absorption Rods2022-01-0606 January 2022
Meeting with Tennessee Valley Authority Regarding Watts Bar Nuclear Plant, Units 1 and 2, Tritium Producing Burnable Absorption Rods
PMNS20211507, Pre-Submittal Meeting with Tennessee Valley Authority Regarding Watts Bar Nuclear Plant, Unit 2, Capsule Withdrawal2021-12-0101 December 2021
Pre-Submittal Meeting with Tennessee Valley Authority Regarding Watts Bar Nuclear Plant, Unit 2, Capsule Withdrawal
ML21281A2282021-10-13013 October 2021
Tennessee Valley Authority Fleet Pre-Submittal Meeting for License Amendment Request to Change Emergency Action Level Scheme Presentation - October 13, 2021 (EPID L-2021-LRM-0096) (Slides)
PMNS20211154, Meeting with Tennessee Valley Authority Regarding a Proposed Fleet Amendment Request2021-09-21021 September 2021
Meeting with Tennessee Valley Authority Regarding a Proposed Fleet Amendment Request
PMNS20211126, Meeting with Tennessee Valley Authority Regarding Watts Bar Nuclear Plant, Unit 22021-09-0808 September 2021
Meeting with Tennessee Valley Authority Regarding Watts Bar Nuclear Plant, Unit 2
ML21231A0972021-08-18018 August 2021
TVA Slides - Pre-Submittal Meeting for Proposed LAR Regarding Application to Modify Watts Bar Units 1 and 2 Technical Specification 3.7.8, Essential Raw Cooling Water (ERCW) System, to Support Permanent Shutdown Board Cleaning
PMNS20210945, Meeting with Tennessee Valley Authority Regarding Watts Bar Nuclear Plant, Unit 22021-08-0606 August 2021
Meeting with Tennessee Valley Authority Regarding Watts Bar Nuclear Plant, Unit 2
PMNS20211003, Meeting with Tennessee Valley Authority Regarding Watts Bar Nuclear Plant, Units 1 and 22021-08-0505 August 2021
Meeting with Tennessee Valley Authority Regarding Watts Bar Nuclear Plant, Units 1 and 2
PMNS20210829, Meeting with Tennessee Valley Authority Regarding Watts Bar Nuclear Plant, Unit 22021-07-12012 July 2021
Meeting with Tennessee Valley Authority Regarding Watts Bar Nuclear Plant, Unit 2
ML21189A0982021-07-0808 July 2021
Teleconference with Tennessee Valley Authority Regarding Watts Bar Nuclear Plant, Unit 2,
PMNS20210702, Closed Meeting with Representatives from the Tennessee Valley Authority to Discuss a Planned Request for Exemption2021-05-25025 May 2021
Closed Meeting with Representatives from the Tennessee Valley Authority to Discuss a Planned Request for Exemption
ML21117A1582021-04-27027 April 2021
Teleconference with Tennessee Valley Authority Regarding Watts Bar Nuclear Plant, Units 1 and 2, Proposed License Amendment Request
PMNS20210392, Annual Assessment Meeting2021-04-12012 April 2021
Annual Assessment Meeting
ML21096A1312021-04-0707 April 2021
Pre-submittal Meeting for Inservice Testing (IST) Program Request for One-Time Extension of Test Frequency of WBN Unit 1 Group 6 Relief Valves
2024-08-06
[Table view]
Category:Meeting Briefing Package/Handouts
MONTHYEARML24320A1062024-11-20020 November 2024
Pre-Submittal Meeting Presentation, November 20, 2024, Pmns 20241350
ML24323A0622024-11-19019 November 2024
Pre-Submittal Meeting for Proposed Alternative Request WBN-2-ISI-02
ML24312A0532024-11-0707 November 2024
FLEX HP Pump SDP for Nextera RUG Meeting - 11.7.2024 - Rev. 0
ML24312A1432024-11-0707 November 2024
SDP for Nextera RUG Meeting - 11.7.2024 - Rev. 0
ML24284A0042024-10-16016 October 2024
Application to Use Online Monitoring Methodology for the Sequoyah Nuclear Plant and Watts Bar Nuclear Plant Session Slides
ML24228A2312024-08-15015 August 2024
TVA Meeting Slides for August 19 Public Meeting Re QAPD Supplement
ML24225A2542024-08-14014 August 2024
August 14, 2024 - TVA Pre-Sub Meeting Presentation - Sequoyah, Units 1 and 2; Watts Bar, Units 1 and 2 - License Amendment Request to Revise TS 3.5.2 ECCS - Operating
ML24137A2872024-05-16016 May 2024
Pre-Submittal Meetingfor Proposed License Amendment Request for Adoption of Technical Specification Task Force Traveler TSTF-276-A, Revision 2, Regarding TS 3.8.1 AC Sources - Operating to Clarify Requirements for Diesel Generator Testing
ML24127A0412024-05-0606 May 2024
May 6, 2024 Meeting Slides
ML24067A2832024-03-27027 March 2024
2023 Browns Ferry, Sequoyah and Watts Bar Annual Assessment Public Meeting Presentation Slides
ML24044A0872024-02-14014 February 2024
TVA Slides - Watts Bar Nuclear Plant Pre-Submittal Meeting for License Amendment Request to Revise TS 3.7.11, Main Control Room Area Chilled Water System
ML23291A1562023-10-18018 October 2023
NRC Pre-Submittal Meeting Watts Bar & Sequoyah LAR, TVA Presentation Slides
ML23264A0412023-09-27027 September 2023
NRC Pre-Submittal Meeting WBN Rebaseline LAR, TVA Presentation Slides
ML23251A1212023-09-12012 September 2023
RHR Flow Rate Reduction During Mode 6 Operation at 23 Ft. Refueling Water Level Technical Specification Change NON-PROPRIETARY Slides
ML23251A1252023-09-12012 September 2023
Pre-submittal Meeting for License Amendment Request, Modify the Watts Bar Nuclear Plant Unit 1 and Unit 2 Technical Specification Surveillance Requirement 3.9.5.1
ML23178A0832023-07-10010 July 2023
Pre-submittal Meeting Slides for License Amendment Request to Revise Technical Specification Table 1.1-1 Regarding the Required Number of Fully Tensioned Reactor Pressure Vessel Head Closure Studs
ML23128A2882023-05-0808 May 2023
TVA Nuclear Plants -2022 EOC Media Slides
ML23052A0362023-02-22022 February 2023
February 22, 2023, Pre-Submittal Meeting for the License Amendment Request for Increased Tritium Production at Watts Bar (EPID L-2023-LRM-0010) - Meeting Slides
ML23041A3562023-02-15015 February 2023
February 15, 2023 Pre-submittal Meeting for Expedited License Amendment Request Main Control Room (MCR) Chiller Completion Time Extension (EPID L-2022-LRM-0098) (Slides)
ML23044A5182023-02-15015 February 2023
Pre-Submittal Meeting Slides for Expedited License Amendment Request Re Main Control Room Chiller Completion Time Extension
ML22318A1042022-11-14014 November 2022
Pre-submittal Meeting for American Society of Mechanical Engineers Boiler and Pressure Vessel Code Section XI, Request for Alternative WBN-2-ISI-01 Slide Presentation
ML22157A4132022-06-0606 June 2022
Plants - Pre-Submittal Teleconference for Proposed Amendment Request Regarding the Change for the Sequoyah and Watts Bar Nuclear Plants Technical Specification 3.4.12 Meeting Slides
ML22102A3032022-04-12012 April 2022
Pre-submittal Meeting for Request for Exemption from Requirements of 10 CFR 26.205(d)(4) and 10 CFR 26.205(d)(6) Slide Presentation
ML22080A1662022-03-21021 March 2022
TVA Nuclear Plants -2021 EOC Media Loop Slides for Automatic Play
ML21343A0282021-12-14014 December 2021
TVA Slide Presentation Regarding Pre-Submittal Meeting for Proposed Revision to Capsule Withdrawal Schedule
ML21281A2282021-10-13013 October 2021
Tennessee Valley Authority Fleet Pre-Submittal Meeting for License Amendment Request to Change Emergency Action Level Scheme Presentation - October 13, 2021 (EPID L-2021-LRM-0096) (Slides)
ML21250A3652021-09-0808 September 2021
Meeting Slides - Watts Bar Nuclear Plant Unit 2, Presubmittal Teleconference for Proposed License Amendment to Revise the Updated Final Safety Analyses Report (UFSAR) to Use a Tube Support Plate Locking/Displacement Analysis
ML21217A2872021-08-19019 August 2021
TVA Slides - Pre-Submittal Meeting for Proposed License Amendment Request Re Application to Modify Technical Specification 3.7.8 Essential Raw Cooling Water (ERCW) System, to Support Permanent Shutdown Board
ML21229A1992021-08-19019 August 2021
Mid-Cycle SG Outage Strategy (EPID L-2021-LRM-0067) (Slides)
ML21231A0972021-08-18018 August 2021
TVA Slides - Pre-Submittal Meeting for Proposed LAR Regarding Application to Modify Watts Bar Units 1 and 2 Technical Specification 3.7.8, Essential Raw Cooling Water (ERCW) System, to Support Permanent Shutdown Board Cleaning
ML21117A0722021-04-27027 April 2021
Meeting Slides for April 28, 2021 Meeting with TVA
ML21096A1312021-04-0707 April 2021
Pre-submittal Meeting for Inservice Testing (IST) Program Request for One-Time Extension of Test Frequency of WBN Unit 1 Group 6 Relief Valves
ML21041A1552021-02-11011 February 2021
Meeting Slides for February 11, 2021 Meeting with TVA
ML20345A0262020-12-10010 December 2020
Replacement Steam Generator Project Planned License Amendment Request (Lars). LAR Descriptions and Submittal Schedule Meeting Slides
ML20329A3722020-11-24024 November 2020
Pre-Submittal Teleconference for Proposed License Amendment Request Regarding Technical Specification 5.9.9, Steam Generator Tube Inspection Report, to Use Popcd Methodology
ML20302A1232020-10-28028 October 2020
Pre-Submittal Meeting Slides Non-Voluntary Application to Modify WBN Unit 1 and Unit 2 TS Surveillance Requirement 3.6.15.4, Shield Building
ML20239A8672020-08-27027 August 2020
Pre-Submittal Meeting Slides License Amendment Request for Technical Specification 5.7.2.19
ML20175A0552020-06-23023 June 2020
TVA Slides for June 23, 2020, Emergency Plan Change Presubmittal Meeting
ML20125A3242020-05-0505 May 2020
Pre-Submittal Meeting Slides for License Amendment Request - Main Control Room Chiller Completion Time Extension
ML20049G1822020-02-18018 February 2020
February 20, 2020 - Pre-submittal Meeting Presentation - Transition to Westinghouse Fuel
ML20009C3962020-01-0808 January 2020
Pre-Submittal Telecon for Expedited License Amendment Request to Revise Technical Specification 3.3.5, LOP DG Start Instrumentation
ML19347B0722019-12-12012 December 2019
TVA and Xcel Energy Slides for Joint Presubmittal Meeting to License Amendment Requests to Adopt WCAP-17661, Revision 1
ML19282A0082019-10-0909 October 2019
TVA Slides for Pre-Submittal Meeting for License Amendment Request to Correct Unbalanced Voltage Relay Instrumentation Values
ML19298A0042019-09-12012 September 2019
Presentation Slides for 9/12/19 Public Meeting
ML19255H5522019-09-12012 September 2019
August 27, 2019, Summary of Public Meeting - Tennessee Valley Safety Conscious Work Environment Update at Watts Bar, Docket 50-390 and 50-391
ML19252A0532019-09-0909 September 2019
TVA Presentation Slides: Watts Bar Nuclear Plant Pre-Submittal Meeting for License Amendment Request Revised Offsite Electrical Power Sources
ML19235A2882019-08-23023 August 2019
2019 WBN SCWE Public Meeting Slides 8-27-2019 (NRC Slides)
ML19235A2712019-08-23023 August 2019
2019 TVA Watts Bar Nuclear Plant Public Meeting Slides 08-27-2019 (TVA Slides)
ML19178A2462019-07-0101 July 2019
Presentation Material for July 1, 2019 Pre-submittal Meeting with TVA on Full Spectrum LOCA Methodology for Watts Bar, Units 1 and 2
ML19161A2412019-06-11011 June 2019
Pre-Application Meeting for Proposed License Amendment Request (LAR) Regarding Change to the WBN Unit 2 Technical Specifications (TS) 3.4.17, Steam Generator Tube Integrity and 5.7.2.12 Steam Generator Program
2024-08-15
[Table view]
Category:Slides and Viewgraphs
MONTHYEARML24320A1062024-11-20020 November 2024
Pre-Submittal Meeting Presentation, November 20, 2024, Pmns 20241350
ML24323A0622024-11-19019 November 2024
Pre-Submittal Meeting for Proposed Alternative Request WBN-2-ISI-02
ML24312A0532024-11-0707 November 2024
FLEX HP Pump SDP for Nextera RUG Meeting - 11.7.2024 - Rev. 0
ML24312A1432024-11-0707 November 2024
SDP for Nextera RUG Meeting - 11.7.2024 - Rev. 0
ML24284A0042024-10-16016 October 2024
Application to Use Online Monitoring Methodology for the Sequoyah Nuclear Plant and Watts Bar Nuclear Plant Session Slides
ML24228A2312024-08-15015 August 2024
TVA Meeting Slides for August 19 Public Meeting Re QAPD Supplement
ML24225A2542024-08-14014 August 2024
August 14, 2024 - TVA Pre-Sub Meeting Presentation - Sequoyah, Units 1 and 2; Watts Bar, Units 1 and 2 - License Amendment Request to Revise TS 3.5.2 ECCS - Operating
ML24184B9162024-07-10010 July 2024
U.S. NRC Meeting Slides for Meeting with Tennessee Valley Authority Regarding NRC Questions Regarding Scope of Nuclear Quality Assurance Program
ML24137A2872024-05-16016 May 2024
Pre-Submittal Meetingfor Proposed License Amendment Request for Adoption of Technical Specification Task Force Traveler TSTF-276-A, Revision 2, Regarding TS 3.8.1 AC Sources - Operating to Clarify Requirements for Diesel Generator Testing
ML24127A0412024-05-0606 May 2024
May 6, 2024 Meeting Slides
ML24067A2832024-03-27027 March 2024
2023 Browns Ferry, Sequoyah and Watts Bar Annual Assessment Public Meeting Presentation Slides
ML23291A1562023-10-18018 October 2023
NRC Pre-Submittal Meeting Watts Bar & Sequoyah LAR, TVA Presentation Slides
ML23264A0412023-09-27027 September 2023
NRC Pre-Submittal Meeting WBN Rebaseline LAR, TVA Presentation Slides
ML23251A1252023-09-12012 September 2023
Pre-submittal Meeting for License Amendment Request, Modify the Watts Bar Nuclear Plant Unit 1 and Unit 2 Technical Specification Surveillance Requirement 3.9.5.1
ML23251A1212023-09-12012 September 2023
RHR Flow Rate Reduction During Mode 6 Operation at 23 Ft. Refueling Water Level Technical Specification Change NON-PROPRIETARY Slides
ML23178A0832023-07-10010 July 2023
Pre-submittal Meeting Slides for License Amendment Request to Revise Technical Specification Table 1.1-1 Regarding the Required Number of Fully Tensioned Reactor Pressure Vessel Head Closure Studs
ML23128A2882023-05-0808 May 2023
TVA Nuclear Plants -2022 EOC Media Slides
ML23052A0362023-02-22022 February 2023
February 22, 2023, Pre-Submittal Meeting for the License Amendment Request for Increased Tritium Production at Watts Bar (EPID L-2023-LRM-0010) - Meeting Slides
ML23044A5182023-02-15015 February 2023
Pre-Submittal Meeting Slides for Expedited License Amendment Request Re Main Control Room Chiller Completion Time Extension
ML23041A3562023-02-15015 February 2023
February 15, 2023 Pre-submittal Meeting for Expedited License Amendment Request Main Control Room (MCR) Chiller Completion Time Extension (EPID L-2022-LRM-0098) (Slides)
ML23010A2542023-01-12012 January 2023
Pre-submittal Meeting for Expedited License Amendment Request Main Control Room (MCR) Chiller Completion Time Extension -- Meeting Slides
ML22318A1042022-11-14014 November 2022
Pre-submittal Meeting for American Society of Mechanical Engineers Boiler and Pressure Vessel Code Section XI, Request for Alternative WBN-2-ISI-01 Slide Presentation
ML22157A4132022-06-0606 June 2022
Plants - Pre-Submittal Teleconference for Proposed Amendment Request Regarding the Change for the Sequoyah and Watts Bar Nuclear Plants Technical Specification 3.4.12 Meeting Slides
ML22103A0852022-04-14014 April 2022
And Watts Bar Plant Pre-submittal Meeting for Inservice Testing (IST) Program Request for Alternative for the Motor Driven Auxiliary Feedwater Pump Testing Following Maintenance During an Outage Per ISTB-3310
ML22102A3032022-04-12012 April 2022
Pre-submittal Meeting for Request for Exemption from Requirements of 10 CFR 26.205(d)(4) and 10 CFR 26.205(d)(6) Slide Presentation
ML22080A1662022-03-21021 March 2022
TVA Nuclear Plants -2021 EOC Media Loop Slides for Automatic Play
ML22035A0002022-02-0404 February 2022
February 8, 2022, Pre-Submittal Meeting Slides Regarding Proposed Change to Modify the Allowable Value for Technical Specification Table 3.3.2-1, Function 6.e(1)
ML22013A6432022-01-19019 January 2022
TVA Slides - Watts Bar Nuclear Plant (WBN) Schedule for the Development of a License Amendment Request (LAR) for Increased Tritium Production at WBN
ML21343A0282021-12-14014 December 2021
TVA Slide Presentation Regarding Pre-Submittal Meeting for Proposed Revision to Capsule Withdrawal Schedule
ML21281A2282021-10-13013 October 2021
Tennessee Valley Authority Fleet Pre-Submittal Meeting for License Amendment Request to Change Emergency Action Level Scheme Presentation - October 13, 2021 (EPID L-2021-LRM-0096) (Slides)
ML21250A3652021-09-0808 September 2021
Meeting Slides - Watts Bar Nuclear Plant Unit 2, Presubmittal Teleconference for Proposed License Amendment to Revise the Updated Final Safety Analyses Report (UFSAR) to Use a Tube Support Plate Locking/Displacement Analysis
ML21229A1992021-08-19019 August 2021
Mid-Cycle SG Outage Strategy (EPID L-2021-LRM-0067) (Slides)
ML21217A2872021-08-19019 August 2021
TVA Slides - Pre-Submittal Meeting for Proposed License Amendment Request Re Application to Modify Technical Specification 3.7.8 Essential Raw Cooling Water (ERCW) System, to Support Permanent Shutdown Board
ML21231A0972021-08-18018 August 2021
TVA Slides - Pre-Submittal Meeting for Proposed LAR Regarding Application to Modify Watts Bar Units 1 and 2 Technical Specification 3.7.8, Essential Raw Cooling Water (ERCW) System, to Support Permanent Shutdown Board Cleaning
ML21096A1312021-04-0707 April 2021
Pre-submittal Meeting for Inservice Testing (IST) Program Request for One-Time Extension of Test Frequency of WBN Unit 1 Group 6 Relief Valves
ML21096A1002021-04-0606 April 2021
Annual Assessments
ML21041A1552021-02-11011 February 2021
Meeting Slides for February 11, 2021 Meeting with TVA
ML21019A5692021-01-19019 January 2021
Pre-Submittal Teleconference for Proposed License Amendment Requests (Lars) for the WBN Unit 2 Replacement Steam Generator (RSG) Project
ML20352A0362020-12-17017 December 2020
Pre-Submittal Teleconference for Proposed License Amendment to Revise the Updated Final Safety Analysis Report (UFSAR) to Use an Alternate Probability of Detection (POD)
ML20329A3722020-11-24024 November 2020
Pre-Submittal Teleconference for Proposed License Amendment Request Regarding Technical Specification 5.9.9, Steam Generator Tube Inspection Report, to Use Popcd Methodology
ML21050A1562020-10-21021 October 2020
Graizer - Presentation - Analysis of Tva'S Watts Bar Nuclear Power Plant Strong-Motion Records of the M 4.4 December 12, 2018 Decatur Tennessee Earthquake
ML20239A8672020-08-27027 August 2020
Pre-Submittal Meeting Slides License Amendment Request for Technical Specification 5.7.2.19
ML20220A2022020-08-0707 August 2020
Pre-Submittal Meeting Slides - Proposed License Approach Regarding a Change for Watts Bar Nuclear Plant Units 1 & 2 Technical Specification 3.3.2 Table 1 Function 6.e Auxiliary Feedwater Auto-Start from Loss of Main Feedwater Pumps(Epid L-2
ML20209A0702020-07-27027 July 2020
Pre-submittal Meeting for Inservice Testing (IST) Program Request for Relief from Increased Frequency Testing of Residual Heat Removal (RHR) Pump 1B-B Meeting Slides
ML20169A5222020-06-25025 June 2020
Pre-Submittal Meeting for License Amendment Request (LAR) Revised Steam Generator (SG) Inspection Intervals and TSTF-510
ML20175A0552020-06-23023 June 2020
TVA Slides for June 23, 2020, Emergency Plan Change Presubmittal Meeting
ML20148M1452020-05-27027 May 2020
(Wbn)Proposed License Approach Regarding a Change for the WBN Units 1& 2 Technical Specification (TS) 3.3.2 Table 1 Function 6.e Auxiliary Feedwater Auto-Start from Loss of Main Feedwater Pumps
ML20147A0132020-05-26026 May 2020
NRC Slides Final WBN-1 TS 3.3.3 LAR
ML20134J0102020-05-14014 May 2020
Pre-Submittal Meeting for License Amendment Request Technical Specification 5.9.6 Add NRC-approved Neutron Fluence Calculational Methodology
ML20125A3242020-05-0505 May 2020
Pre-Submittal Meeting Slides for License Amendment Request - Main Control Room Chiller Completion Time Extension
2024-08-15
[Table view] |
Text
Watts Bar Nuclear Plant
Watts Bar Nuclear Plant (WBN)
Pre-submittal Meeting for Expedited License Amendment Request Main Control Room (MCR) Chiller Completion Time Extension
February 15, 2023 Agenda
- Current Technical Specification (TS) Requirements
- Reason for the Proposed Change
- Revised MCR Chiller Replacement Schedule
- Proposed Technical Specification Changes
- Changes to MCR TDescription emporary Chilled Water Equipment
2 Introduction
- The purpose of this meeting is to discuss a proposed expedited license amendment request (LAR) for WBN Units 1 and 2.
- There are no technical changes or changes to the TS compensatory measures associated with the proposed amendment.
- The proposed change is due to delays in the vendor delivery of the MCR CREATCS chillers, which were beyond the control of TVA.
l 3
Background
- 5/19/2020 - TVA submits the LAR to modify the WBN Units 1 and TS for MCR completion time extension (ML20140A342). LAR includes technical information on the MCR CREATCS replacement project including the temporary chilled water system to be utilized during the MCR CREATCS replacement project.
l 4 Current TS Requirements Units 1 and 2 - TS 3.7.11 Footnote for Action A.1
l 5 Current TS Requirements Units 1 and 2 - TS 3.7.11 Footnote for Action E.1
l 6 Reason for the Proposed Change
- Due to unforeseen supplier chain issues, TVA is unable to meet the current TS date range of May 1, 2022, to May 1, 2023, for the MCR chiller replacement as required by the existing footnotes to the Completion Time for WBN Units 1 and 2 TS 3.7.11, Required Actions A.1 and E.1.
- As shown in Table 1, the new MCR chillers have not yet been received and are not scheduled to commence installation until the third quarter 2023.
- TVA has received confirmation from the supplier vendor that they can currently meet the delivery dates for the MCR chillers.
l 7 Revised MCR Chiller Replacement Schedule
Table 1 Revised WBN MCR Chiller Replacement Timeline
Activity Date U1R18 Outage 4/14/2023-5/13/2023 Qualification of MCR Chillers 4/28/2023 New MCR B Chiller at WBN 5/3/2023 New MCR A Chiller at WBN 5/9/2023 Replace existing MCR B chiller 7/17/2023 - 8/24/2023 U2R5 Outage 11/03/2023 - 12/02/2023 Replace existing MCR A chiller 1/29/2024 - 3/24/2024 U1R19 Outage 11/1/2024-12/13/2024
l 8 Proposed TS Changes
- Revise the current start and end dates in the footnotes to TS 3.7.11, Required Actions A.1 and E.1 to July 1, 2023, to December 31, 2024, respectively (provides a margin for any potential further schedule delays).
Reflects the current MCR replacement schedule (allowing for margin for any potential further schedule delays).
Requires expedited NRC review and approval of the LAR because NRC approval would be required no later than June 15, 2023 (allowing 15 days for implementation).
l 9 Proposed Technical Specification Change
Units 1 and 2 - TS 3.7.11 Footnote for Action A.1
l 10 PLACE THE TITLE OF THE PRESENTATION HERE Proposed Technical Specification Change
Units 1 and 2 - TS 3.7.11 Footnote for Action E.1
l 11 PLACE THE TITLE OF THE PRESENTATION HERE Changes to MCR Temporary Chilled Water Equipment Description
- Differences between the currently planned MCR temporary chiller equipment description and the MCR temporary chiller equipment description in Section 3.1 to the previous LAR and the NRC Regulatory Audit Summary (ML21012A084) are provided in Tables 2 and 3, respectively. There are no changes to the MCR temporary chiller equipment description in the previous TVA RAI response (ML20351A424).
- The compensatory measures listed in the previous LAR and the NRC SE remain unchanged.
l 12 Table 2 Item No. Description in LAR Currently Planned Installation Reason for Change Significance 1 Page E6 of 24, paragraph 1 describes, The inlet and outlet piping will To allow more efficient This new configuration The chilled water piping inlet and no longer be removed. (less time) transition is functionally outlet to the AHUs is removed and Permanent branch connections between the temporary equivalent to the replaced with temporary piping for the with isolation valves are being and permanent chillers configuration described temporary chiller system. added via permanent which will be in the LAR and is modification to the inlet and advantageous during expected to benefit the outlet piping to the AHUs to the post modification project by reducing the allow connection of the test (PMT) window and time in the TS Required temporary chiller without should reduce time in Action Completion removal of piping. the TS Required Action Time.
Completion Time.
2 Page E6 of 24, Section 3.2 describes The temporary chiller The temporary chiller These items were major equipment and includes Chilled installation may have as many installation includes included for water Pump. as three pumps. Additionally, multiple pumps to meet com pleteness of one major equipment item necessary hydraulic information.
that was not included in the conditions. The LAR description is a transfer temporary chiller switch, to allow transfer installation includes a between plant power and the transfer switch.
diesel generator (DG) for the temporary chiller.
l 13 Table 2 Item No. Description in LAR Currently Planned Installation Reason for Change Significance 3 Page E6 of 24, Section 3.2.1 The DG referred to in the LAR (a Clarification on the Both the rented refers to a 320kW DG. Section rented Aggreko chiller) is rated at rating of the Aggreko Aggreko equipment 3.2.4 also refers to the 320kW 320kW at 50Hz. The rating of this DG and to include and the Carrier/CAT DG. DG is 300kW at 60Hz, which is reference to the CAT equipment have adequate for the temporary/rented generator which the adequate electrical and Aggreko chiller equipment. A site has purchased, cooling capacity to Caterpillar (CAT) generator and along with a Carrier meet the requirements Carrier chiller have also been chiller. for the temporary chiller purchased by the site to reduce system.
reliance on rented equipment. The ratings (tons and kW ) of the CAT/Carrier equipment exceed the ratings of the rented Aggreko equipment.
4 Page E6 of 24, Section 3.2.1, Permanent branch connections have To allow more efficient This new configuration second paragraph states, been added to the AHU piping, (less time) transition is functionally Connection to the AHU coils will Therefore, it is more accurate to state between the temporary equivalent to the be made by isolating the chilled "Connection to the AHU coils is made and permanent chillers configuration described water piping, removing the flex via permanent flanged branch which will be in the LAR and is hoses between the AHU coils connections with an isolation valve, advantageous during expected to benefit the and the chilled water piping and which were added as part of the the PMT window and project by reducing the then reconnecting the temporary chiller replacement project should reduce time in time in the TS Required chilled water supply and return subsequent to the submittal of the the TS Required Action Action Completion hoses to the AHU coils using LAR." Completion Time. Time.
l 14 existing flange connections.
Table 2 Item No. Description in LAR Currently Planned Installation Reason for Change Significance 5 Page E7 of 24, Section 3.2.2 Hose sizes used in the temporary Final configuration to Larger hose sizes meet refers to 2.5 inch() diameter chilled water system are of various meet hydraulic hydraulic requirements supply and return hoses. sizes (3, 4 and 6) requirements. and offer less resistance compared to smaller hose sizes.
6 Page E7 of 24, Section 3.2.3 As noted in the NRC audit summary, Provide flexibility in Both locations are a states, The equipment "The two potential locations with chiller locations. similar distance (hose associated with the temporary respect to assumed plant north are run). Both locations chiller system will be located in (a) due west of the Auxiliary Building are also sufficiently the yard west of the Auxiliary or (b) northwest of the Unit 1 distant from the plant Building and in the Control Containment." air intakes.
Building (Elevation 729.0 feet).
l 15 Table 2 Item No. Description in LAR Currently Planned Installation Reason for Change Significance 7 Page E7 of 24, Section 3.2.3 This statement is intended to mean Clarification. Clarification.
states, the temporary chiller as required. The design package system will be protected from states that if the chiller is deployed freezing. during winter months, steps should be taken to avoid freezing (e.g.,
draining lines when not in use, use of heat tape and insulation).
l 16 Table 3 Item No. Description in NRC Audit Report Currently Planned Installation Reason for Change Significance 1 Page 4 of 7 of the Audit Report Permanent branch connections have To allow more efficient This new configuration states, Connection to the AHU been added to the AHU piping; (less time) transition is functionally coils will be made by isolating therefore, a current statement would between the temporary equivalent to the the chilled water piping, be, "Connection to the AHU coils is and permanent chillers configuration described removing the flex hoses between made via permanent flanged branch which will be in the LAR and is the AHU coils and the chilled connections with an isolation valve, advantageous during expected to benefit the water piping and then which were added as part of the the PMT window and project by reducing the reconnecting the temporary chiller replacement project should reduce time in time in the TS Required chilled water supply and return subsequent to the submittal of the the TS Required Action Action Completion hoses to the AHU coils using LAR." Completion Time. Time.
existing flange connections.
2 Page 5 of 7 of the Audit Report The CAT DG has a 300 gallon tank, To reflect the capacity The run time for the states, The temporary chiller which provides a 24-hour run time of the CAT DG which CAT DG is longer than skid DG fuel oil tanks capacity which is conservative compared to would be used with the the run time for the provides a 12-hour run time for the value cited here.Carrier chiller.Aggreko DG, which is the chiller skid without fuel oil conservative to what is replenishment, which allows the described in the Audit licensee time for replenishing Report.
measures.
l 17 Schedule Milestones
- TVA to submit LAR to NRC by February 28, 2023.
- Request expedited NRC approval by June 15, 2023.
- 15-day implementation following NRC approval.
l 18
