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MONTHYEARML14115A0662014-04-21021 April 2014 ASME Section XI Inservice Inspection Program Relief Request N2-I4-LMT-002-Fourth Interval Period 1 Limited Examinations Project stage: Request ML14217A3262014-07-30030 July 2014 NRR E-mail Capture - RAI for Relief Request N2-I4-LMT-002 Regarding Limited Examination Coverage Project stage: RAI ML14245A4032014-08-26026 August 2014 Response to Request for Additional Information ASME Section XI Inservice Inspection Program Relief Request N2-I4-LMT-002 - Fourth Interval Period 1 Limited Examinations Project stage: Response to RAI ML15023A2192015-02-0303 February 2015 Relief Request (RR) N2-I4-LMT-002, Limited Examinations for the Fourth Ten-Year Inspection Interval Period Project stage: Other 2014-07-30
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Category:E-Mail
MONTHYEARML24107A9112024-04-15015 April 2024 NRC to Fws, Follow-up on Request for Concurrence for North Anna SLR ML24107A9122024-04-11011 April 2024 Fws to NRC, Follow-up on Request for Concurrence for North Anna SLR ML24087A0102024-03-26026 March 2024 NRR E-mail Capture - Verbal Relief for North Anna Unit 1 - (ASME Code), Section XI, Subsection IWB-2430 ML24087A0112024-03-23023 March 2024 NRR E-mail Capture - Draft RAIs for Reactor Coolant Pump (RCP) Relief Request (L-2024-LLR-0022) ML24107B1562024-02-20020 February 2024 Cherokee Nation E.Toombs Na Removal Request ML23320A1122024-01-18018 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 ML21312A0012021-11-0404 November 2021 Comments on North Anna Draft SER ML21312A0112021-11-0404 November 2021 Enclosure 3 - NAPS Draft SER Section 3 Comments 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) 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 ML21312A0022021-09-21021 September 2021 Enclosure 1 - E-mail - NAPS SLR SER Appendix a for Dominion Review 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 2024-04-15
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1 NRR-PMDAPEm Resource From: Sreenivas, V Sent: Wednesday, July 30, 2014 5:05 PM To: 'david.heacock@dom.com' Cc: 'david.sommers@dom.com'; Pascarelli, Rober t; Tom Shaub; Rezai, Ali; Jay Leberstien (jay.leberstien@dom.com); 'Gary D Miller'
Subject:
RAI FOR RELIEF REQUEST N2-I4-LM T-002 REGARDING LIMITED EXAMINATION COVERAGE (TAC MF3982)REQUEST FOR ADDITIONAL INFORMATION RELIEF REQUEST N2-I4-LMT-002 REGARDING LIMITED EXAMINATION COVERAGE VIRGINIA ELECTRIC AND POWER COMPANY - DOMINION NORTH ANNA POWER STATION, UNIT 2 DOCKET NUMBER 50-339 By letter dated April 21, 2014 (Agencywide Document s Access and Management System (ADAMS) Accession Number ML14115A066), Virginia Electric and Power Company - Dominion (the licensee) submitted relief request (RR) N2-I4-LMT-002 for the U.S. Nuclear Regulatory Commission (NRC) review and approval. The licensee requested relief from a certain requirement of the American Society of Mechanical Engineers Boiler and Pressure Vessel Code (ASME Code),Section XI. The request relates to essentially 100 percent coverage of the ASME Code required examination volume for various welds. The licensee submitted RR N2-I4- LMT-002 for the North Anna Power Station, (North Anna), Unit 2. The NRC staff requests the following additional information.
- 1. The licensee stated in Section 6.A1, Attachment to RR N2-I4-LMT-002, that, "-The examination volumes included the weld and base materials near the inside surface of the weld joint, which are typically the highest regions of stress, and where the expected degradation sources to be manifested should they occur-"
The NRC staff reviewed the examination coverage schematic diagrams the licensee provided on pages 14, 15, and 16 of Enclosure A1-1, and was unable to confirm from the schematic diagrams whether the volume scanned by the ultrasonic testing (UT) included the weld materials and the heat affected zone (HAZ) near the inside diameter (ID) surface of the weld joint. Provide and show clearly on the schematic diagrams on pages 14, 15, and 16 the volume scanned by the UT (e.g., similar to the dashed areas depicted on the schematic diagrams on pages 22 and 23, Enclosure A1-2 to the relief request, that showed the exact volume scanned by the UT). 2. Given the reduced inspection coverage of the welds under consideration, discuss the need for compensatory measures such as plant walk downs, VT-2 examination, or leak detection systems and whether such compensatory measures have been implemented.
- 3. Clarify whether the 75 percent coverage of the ASME Code required examination volume obtained by the UT is accurately documented in the following Enclosures to the relief request. If no, provide correct examination coverage obtained. a. In Enclosure R1-1 to RR N2-I4-LMT-002, the ultrasonic data records on pages 50, 51, and 52 as compared to Table entitled "Coverage Summary" on page 53 appear to be inconsistent.
2(Example: Table entitled "Coverage Summary" on page 53 shows that during performance of the circumferential scanning from the downstream side of the weld in the clockwise and counter clockwise directions, 100 percent coverage of the required volume was obtained. However, no ultrasonic data were recorded to substantiate this coverage.)
- b. In Enclosure R2-1 to RR N2-I4-LMT-002, the ultrasonic data records on pages 74, 75, 76, and 77 as compared to Table entitled "Coverage Summary" on page 79 appears to be inconsistent. (Example: Table entitled "Coverage Summary" on page 79 shows that during performance of the circumferential scanning from the downstream side of the weld in the clockwise and counter clockwise directions, 100 percent coverage of the required volume was obtained. However, no ultrasonic data were recorded to substantiate this coverage.)
- 4. The licensee stated in R1 and R2, Attachment to RR N2-I4-LMT-002, that the UT procedures, equipment, and personnel are qualified in accordance with the performance demonstration requirements of Appendix VIII,Section XI of the ASME Code. Provide the applicable supplement(s) used for the UT qualification in R1 and R2.
- 5. The licensee stated on page 61 and 62 in R2, Attachment to RR N2-I4-LMT-002, that, "- The UT examination identified two recordable indications: 1) The first indication evaluated as acceptable per ASME Section XI Table IWB-3514-1, and 2) The second identified as Inner Diameter Geometry. -"
(a) Discuss the history of these indications (e.g., (i) Had the above indications ever been detected during previous examinations? (ii) did the fabrication radiographs document the above indications?). (b) Comparing to the baseline data, discuss whether the indications have grown. If the indications have grown, provide the flaw growth projection for the future.
(c) Discuss whether these indications will be re-examined in the future to monitor their growth or lack of.
Please submit the response to these RAIs by September 1, 2014. If you have any questions please contact me at your earliest.
___________________________ V. Sreenivas, PH.D., C.P.M.,
Project Manager, Rm.#O8F6, LPL2-1 North Anna and Surry Power Stations, Units 1 and 2 Division of Operating Reactor Licensing-NRR (301) 415-2597, v.sreenivas@nrc.gov
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Unauthorized use of the data contained in this message is prohibited. If you are not the intended recipient of this message or have received this message in error, please notify the sender immediately by telephone or email Reply and delete the original message and any attachments without keeping a copy***
Hearing Identifier: NRR_PMDA Email Number: 1473 Mail Envelope Properties (V.Sreenivas@nrc.gov20140730170500)
Subject:
RAI FOR RELIEF REQUEST N2-I4-LMT-002 REGARDING LIMITED EXAMINATION COVERAGE (TAC MF3982) Sent Date: 7/30/2014 5:05:26 PM Received Date: 7/30/2014 5:05:00 PM From: Sreenivas, V Created By: V.Sreenivas@nrc.gov Recipients: "'david.sommers@dom.com'" <david.sommers@dom.com> Tracking Status: None "Pascarelli, Robert" <Robert.Pascarelli@nrc.gov> Tracking Status: None "Tom Shaub" <tom.shaub@dom.com>
Tracking Status: None "Rezai, Ali" <Ali.Rezai@nrc.gov> Tracking Status: None "Jay Leberstien (jay.leberstien@dom.com)" <jay.leberstien@dom.com> Tracking Status: None
"'Gary D Miller'" <gary.d.miller@dom.com> Tracking Status: None "'david.heacock@dom.com'" <david.heacock@dom.com> Tracking Status: None
Post Office: Files Size Date & Time MESSAGE 5595 7/30/2014 5:05:00 PM
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