Letter Sequence RAI |
---|
|
|
MONTHYEARML14183B3182014-06-30030 June 2014 Proposed License Amendment Request Permanent Fifteen-Year Type a Test Interval Project stage: Request ML14203A3122014-07-22022 July 2014 NRR E-mail Capture - Acceptance REVIEW-(LAR)-NORTH Anna Power Station, Units 1 and 2, Lar,Permanent FIFTEEN-YEAR Type a Test Interval (TAC MF4332 and MF4333) Project stage: Acceptance Review ML15034A3532015-01-28028 January 2015 Response to Request for Additional Information Proposed License Amendment Request Permanent Fifteen-Year Type a Test Interval Project stage: Response to RAI ML15068A0902015-03-0909 March 2015 NRR E-mail Capture - North Anna Units 1 and 2, Request for Information: Technical Specification Change Proposing Permanent FIFTEEN-YEAR Type a Test Interval Project stage: RAI ML15133A3812015-06-16016 June 2015 Issuance of Amendments to Extended Type a Test Frequency to 15 Years Project stage: Approval 2015-01-28
[Table View] |
|
---|
Category:E-Mail
MONTHYEARML23320A1122024-01-18018 January 2024 NRC to Fws, Concurrence with Endangered Species Act Determinations for North Anna Power Station, Units 1 and 2, Subsequent License Renewal, Issuance of Draft Supplemental Environmental Impact Statement, and Opportunity for Public Comment ML23355A2722023-12-21021 December 2023 NRR E-mail Capture - Schedule Revision for Emergency Preparedness Staff Augmentation Times License Amendment Request ML23318A1172023-11-13013 November 2023 NRR E-mail Capture - Formal Issuance of RAIs for North Anna Technical Support Center (TSC) License Amendment Request (LAR) (L-2023-LLA-0006) ML23257A2092023-09-14014 September 2023 NRR E-mail Capture - Formal Issuance of 2nd Round RAIs for Surry Units 1&2 and North Anna Units 1&2 Emergency Plans LAR ML23243A9862023-08-31031 August 2023 NRR E-mail Capture - Draft RAIs for EP Staff Augmentation Times LAR (L-2022-LLA-0166) ML23219A1602023-08-0707 August 2023 003 Radiation Safety Baseline Inspection Information Request ML23171B0522023-06-20020 June 2023 NRR E-mail Capture - RAI for Review of Appendix F to DOM-NAF-2-P (Redacted) ML23075A0232023-03-15015 March 2023 NRR E-mail Capture - RAI - License Amend Req (LAR) to Revise Tech Spec (Ts) 3.6.8 Limiting Condition for Operation to Remove Refueling Water Chemical Addition Tank and Replace the Containment Sump Buffer North Anna, 1 and 2 (L-2022-LLA-0162 ML23067A2162023-03-0707 March 2023 NRR E-mail Capture - RAI for North Anna, 1 & 2, Surry 1 & 2, Millstone, 2 & 3, Request for Approval of App. F Fleet Report DOM-NAF-2-P, Qual of the Framatome ORFEO-GAIA and ORFEO-NMGRID CHF Correlations in the Dominion VIPRE-D Computer Code ML23060A0932023-03-0101 March 2023 NRR E-mail Capture - Formal Issuance of RAIs for Surry/North Anna Emergency Plans LAR ML23059A2282023-02-28028 February 2023 NRR E-mail Capture - Draft RAIs for Containment Buffer Change to Natb (L-2022-LLA-0162) ML23039A1712023-02-0808 February 2023 NRR E-mail Capture - Acceptance Review for Technical Support Center (TSC) Relocation (L-2023-LLA-0006) ML23018A0352023-01-17017 January 2023 NRR E-mail Capture - Acceptance Review for Fleet Report Re Appendix F of DOM-NAF-2-P (L-2022-LLT-0003) ML22342B1472022-12-0808 December 2022 NRR E-mail Capture - Acceptance Review for LAR Re NAPS Post LOCA Buffer Change (L-2022-LLA-0162) ML22335A4842022-12-0101 December 2022 NRR E-mail Capture - Acceptance Review for LAR North Anna Power Station - Units 1 and 2 and Surry Power Station - Units 1 and 2 Emergency Plan Staff Augmentation Times (L-2022-LLA-0166) ML22242A0452022-08-23023 August 2022 NRR E-mail Capture - Dominion GL 04-02 Response Draft RAIs (L-2017-LRC-0000) ML22174A3552022-06-23023 June 2022 NRR E-mail Capture - Acceptance Review for Dominion Fleet LAR to Implement TSTF-554 (L-2022-LLA-0078) ML22104A0252022-04-14014 April 2022 NRR E-mail Capture - Dominion Presentation Slides for April 21, 2022 Public Meeting on Emergency Preparedness Submittal for the North Anna Power Station and the Surry Power Station ML22083A2102022-03-24024 March 2022 NRR E-mail Capture - Draft RAI - Relief Request N2-14-LMT-003 Fourth Ten Year Inservice Inspection Interval ML22032A0962022-02-0101 February 2022 002 Radiation Safety Baseline Inspection Information Request ML22018A0272022-01-18018 January 2022 2022 All RFI Responses - Exercise and Program Inspections - Revl ML22007A2672022-01-0707 January 2022 NRR E-mail Capture - North Anna, Unit 2, ASME Section XI Inservice Inspection Program Relief Request N2-14-LMT-003 Fourth Interval Third Period Limited Examinations (L-2021-LLR-0088) ML21335A0812021-12-0101 December 2021 NRR E-mail Capture - Acceptance Review for OMN-28 Request Alternative to ISTC-3700, Position Verification Testing (L-2021-LLR-0086) ML21334A1922021-11-30030 November 2021 NRR E-mail Capture - Audit Plan for Reactor Core Thermal-Hydraulics Using the VIPRE-D Appendix E Review ML21327A3652021-11-23023 November 2021 NRR E-mail Capture - Draft RAI for TSTF-577 LAR ML21326A1502021-11-22022 November 2021 NRR E-mail Capture - Acceptance Review for Relocation of Unit Staff Requirements to the QAPD LAR (L-2021-LLA-0195) ML21322A0962021-11-18018 November 2021 Final Request for Additional Information Set 5 - North Anna SLRA Safety Review (EPID No. L-2020-SLR-0000) - Email ML21312A0082021-11-0404 November 2021 Enclosure 2 - NAPS Draft SER Table A.1-1 Markup ML21312A0112021-11-0404 November 2021 Enclosure 3 - NAPS Draft SER Section 3 Comments ML21312A0012021-11-0404 November 2021 Comments on North Anna Draft SER ML21306A3302021-11-0202 November 2021 NRR E-mail Capture - Acceptance Review for TSTF-569 LAR ML21286A7372021-10-13013 October 2021 Additional Element Included in the Implementation Plan for the Surry Fuel Melt Safety Limit (SL) LAR ML21274A0022021-09-30030 September 2021 NRR E-mail Capture - Acceptance Review for TSTF-577 LAR (L-2021-LLA-0158) ML21312A0022021-09-21021 September 2021 Enclosure 1 - E-mail - NAPS SLR SER Appendix a for Dominion Review ML21312A0072021-09-21021 September 2021 Enclosure 1 - E-mail - Enclosure B - NAPS SER App a - Dominion Comments 9-21-2021 ML21312A0032021-09-21021 September 2021 Enclosure 1 - E-mail - Enclosure a - Dominion Table A4.4-1 Clean Version ML21256A0672021-09-13013 September 2021 Final Request for Confirmation of Information Set 2 - North Anna SLRA Safety Review (EPID No. L-2020-SLR-0000) - Email ML21152A1722021-09-0707 September 2021 NRC to Fws, NRC Issuance of Draft Environmental Impact Statement for North Anna Subsequent License Renewal, Opportunity for Public Comment, and Endangered Species Act Determinations ML21238A0942021-08-25025 August 2021 Draft Request for Additional Information Set Z - North Anna SLRA Safety Review (EPID No. L-2020-SLR-0000) - Email ML21225A5512021-08-13013 August 2021 Discussion Point for Public Meeting Regarding Fire Protection Piping Cyclic Loading - Transmittal E-mail ML21195A2442021-07-13013 July 2021 NRR E-mail Capture - Draft RAI Appendix E to Topical Report DOM-NAF-2 Qualification of the Framatome BWU-I CHF Correlation in the Dominion Energy VIPRE-D Computer Code ML21188A1632021-07-0707 July 2021 Final Request for Additional Information Set 4 - North Anna SLRA Safety Review (EPID No. L-2020-SLR-0000) - Email ML21154A0152021-06-0101 June 2021 NRR E-mail Capture - Acceptance Review for Primary Grade Water LAR (L-2021-LLA-0082) ML21140A3682021-05-20020 May 2021 Response to North Anna Hardship (Temporary Staff Guidance Additional Guidance for FOF Inspections During the PHE) ML21140A3712021-05-19019 May 2021 FOF Discussion ML21123A2972021-05-0303 May 2021 Final Request for Additional Information Set 3 - North Anna SLRA Safety Review (EPID No. L-2020-SLR-0000) - E-mail ML21091A0022021-04-0101 April 2021 Final Request for Additional Information Set 2 - North Anna SLRA Safety Review (EPID No. L-2020-SLR-0000) - Email ML21076A4622021-03-17017 March 2021 NRR E-mail Capture - Draft RAI for Versatile Internals and Component Program for Reactors Vipre Code Review (L-2021-LLT-0000) ML21075A0032021-03-12012 March 2021 Emergency Preparedness Exercise Inspection Request for Information for - Brunswick, Catawba, North Anna, Oconee, Vogtle 1 & 2 ML21069A3522021-03-10010 March 2021 NRR E-mail Capture - Acceptance Review for Topical Report DOM-NAF-2 VIPRE-D 2024-01-18
[Table view] |
Text
1 NRR-PMDAPEm Resource From: Sreenivas, V Sent: Monday, March 09, 2015 8:54 AM To: Biro, Mihaela Cc: Reisifard, Mehdi
Subject:
RE: North Anna Units 1 and 2, Request fo r Information: TECHNICAL SPECIFICATION CHANGE PROPOSING PERMANENT FIFT EEN-YEAR TYPE A TEST INTERVALAs per our conference call, please find the following clarifications on the submitted RAI responses provided by the licensee letter dated Jan. 28, 2015:
Table B.1 of Attachment 5 to the LAR provides the list of findings from the 2013 peer review and provides an assessment of the impact on the ILRT extension application. In response to the request for additional information PRA RAI-1.a (ADAMS Accession No. ML15034A353) the licensee provided a list of F&Os and the associated SR, which did not meet Capability Category I requirements of the ASME/ANS RA-Sa-2009 PRA standard endorsed by RG 1.200, Revision 2.
- a. The licensee's disposition for F&Os IE-A6-01, DA-B2-01, DA-C14-01 and QU-B5-01 included in the response to PRA RAI-1.a states that the impact of each of these findings is "expected to be bounded by an order of magnitude increase" and that "[t]he sensitivity study in of the LAR demonstrates that an order of magnitude increase in CDF or LERF does not impact acceptability of the results for this application." Justify how the cumulative effect of all of these open findings not meeting Capability Category I is acceptable for the ILRT extension application.
Response
The sensitivity study in Enclosure 1 of the proposed LAR demonstrated that an order of magnitude increase in core damage frequency (CDF) would not invalidate the results of the ILRT extension application. Although this sensitivity was referenced for individual Facts and Observations (F&Os), the sensitivity study is also considered bounding for the cumulative impact of the open findings. The F&Os which credited the bounding sensitivity study have been further evaluated using sensitivity studies, and their risk impact has been shown to be acceptable. The CDF and Large Early Release Frequency (LERF) increase for IE-A6-01 are 2E-8/yr and 1E-9/yr, respectively; for DA-B2-01 are 3E-9/yr and 3E-9/yr, respectively; for DA-C14-01 are 4E-8/yr and 1E-9/yr, respectively; and for QU-B5-01 are 1E-8/yr with no change in LERF. The bounding sensitivity in Enclosure 1 of the LAR considered the risk impact of an order of magnitude increase in CDF, or a CDF increase of 1.55E-5/yr. Although each of these F&Os was evaluated individually, their cumulative impact is not expected to exceed the increase in risk evaluated by the bounding sensitivity study. As a result, the cumulative effect of the open F&Os on the ILRT extension application is acceptable.
- b. F&Os SY-A14-01, HR-G2-01, IFQU-A9-01, and IFSO-A4-01 were listed in Table B.1 of Attachment 5 to the LAR but not in the response to PRA RAI-1.a. Requirements for Capability Categories I and II are the same for SRs related to those findings. If related SRs meet the requirements for Capability Category I (and II) of ASME/ANS RA-Sa-2009 PRA standard endorsed by RG 1.200, Revision 2, justify how those findings were resolved, as they were initially identified in Table B.1 of Attachment 5 to the LAR, or otherwise, justify how the cumulative effect of all of the F&Os (identified in parts a and b of this RAI) not meeting Capability Category I is acceptable for the ILRT extension application.
Response
2F&Os SY-A14-01, HR-G2-01, IFQU-A9-01, and IFSO-A4-01 were listed in Table B.1 of Attachment 5 to the LAR because all of the F&Os from the peer review report were included in the LAR. The related Supporting Requirements (SRs) for these four F&Os were considered met in the peer review report. Consequently, they were not included in the response to PRA RAI-1.a, which requested only the SRs that did not meet Capability Category I requirements.
Hearing Identifier: NRR_PMDA Email Number: 1925 Mail Envelope Properties (V.Sreenivas@nrc.gov20150309085400)
Subject:
RE: North Anna Units 1 and 2, Request for Information: TECHNICAL SPECIFICATION CHANGE PROPOSING PERMANENT FIFTEEN-YEAR TYPE A TEST INTERVAL Sent Date: 3/9/2015 8:54:23 AM Received Date: 3/9/2015 8:54:00 AM From: Sreenivas, V Created By: V.Sreenivas@nrc.gov Recipients: "Reisifard, Mehdi" <Mehdi.Reisifard@nrc.gov> Tracking Status: None "Biro, Mihaela" <Mihaela.Biro@nrc.gov> Tracking Status: None Post Office: Files Size Date & Time MESSAGE 3632 3/9/2015 8:54:00 AM
Options Priority: Standard Return Notification: No Reply Requested: No Sensitivity: Normal Expiration Date: Recipients Received: