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| | number = ML102930049 | | | number = ML102930049 |
| | issue date = 11/04/2010 | | | issue date = 11/04/2010 |
| | title = Request for Additional Information for Salem Nuclear Generating Station, Units 1 and 2, LRA on Primary Water Stress Corrosion Cracking in Steam Generator Tube-to-Tube Sheet Welds (TAC Nos. ME1834 and ME1836) | | | title = Request for Additional Information for Salem Nuclear Generating Station, Units 1 and 2, LRA on Primary Water Stress Corrosion Cracking in Steam Generator Tube-to-Tube Sheet Welds |
| | author name = Brady B | | | author name = Brady B |
| | author affiliation = NRC/NRR/DLR/RPB1 | | | author affiliation = NRC/NRR/DLR/RPB1 |
Letter Sequence RAI |
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TAC:ME1834, Control Room Habitability (Approved, Closed) TAC:ME1836, Control Room Habitability (Approved, Closed) |
Results
Other: LR-N16-0144, Completion of Activities to Support Entry Into the Period of Extended Operation, ML092400531, ML092400532, ML092430231, ML092460442, ML092470039, ML092520185, ML092650382, ML092660174, ML092660447, ML100850459, ML102280211, ML102430586, ML11125A024
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MONTHYEARLR-N09-0192, Information to Support NRC Staff Review of the Application for Renewed Operating License2009-08-18018 August 2009 Information to Support NRC Staff Review of the Application for Renewed Operating License Project stage: Request LR-N09-0161, PSEG Nuclear, Salem Nuclear Generating Station, Units 1 and 2, Transmittal of License Renewal Application2009-08-18018 August 2009 PSEG Nuclear, Salem Nuclear Generating Station, Units 1 and 2, Transmittal of License Renewal Application Project stage: Request ML0924005312009-08-18018 August 2009 PSEG Nuclear, Salem Nuclear Generating Station, Units 1 and 2, License Renewal Application, Volume 2 of 3 Project stage: Other ML0924302312009-08-18018 August 2009 PSEG Nuclear, Salem Nuclear Generating Station, Units 1 and 2, License Renewal Application, Volume 1 of 3 Project stage: Other ML0924005322009-08-18018 August 2009 PSEG Nuclear, Salem Nuclear Generating Station, Units 1 and 2, License Renewal Application, Volume 3 of 3 Project stage: Other ML0924604422009-09-0303 September 2009 Delaware Citizen Comment on Salem Hope Creek License Renewal Application Project stage: Other ML0924700392009-09-0404 September 2009 Comment on Salem - Hope Creek License Renewal Applications from Citizen Project stage: Other ML0926601742009-09-0707 September 2009 Comment on License Renewal for Salem and Hope Creek Power Plants - Goodman Project stage: Other ML0925201852009-09-0808 September 2009 Comments About Relicensing Salem and Hope Creek Reactors in Nj, Steven Hegedus Project stage: Other ML0926503822009-09-0808 September 2009 Citizen Comment on Salem Hope Creek License Renewal Application Project stage: Other ML0926604472009-09-23023 September 2009 Hope Creek, E-mail from Ruth Panella Comments on License Renewal Project stage: Other ML1008502062010-03-24024 March 2010 Task Order No. 004 Under Delivery Order No. NRC-DR-03-09-061 Project stage: Acceptance Review ML1008504592010-04-0606 April 2010 Project Manager Change for the License Renewal of Salem Nuclear Generating Station, Units 1 and 2 (TAC No. ME1834 and ME1836) Project stage: Other ML1007606612010-04-14014 April 2010 RAI Regarding Balance of Plant Scoping and Screening Results for the Salem Nuclear Generating Station Units 1 & 2 (Tac Nos. ME1834 and ME1836) Project stage: RAI ML1013805112010-05-24024 May 2010 Request for Additional Information for the Salem Generating Station, Units 1 and 2, License Renewal Application, Section 3.3.2 (TAC Nos ME1836 and ME1834) Project stage: RAI LR-N10-0191, Response to NRC Request for Additional Information Dated April 30, 2010, Regarding Scoping and Screening Methodology for License Renewal Application2010-05-28028 May 2010 Response to NRC Request for Additional Information Dated April 30, 2010, Regarding Scoping and Screening Methodology for License Renewal Application Project stage: Response to RAI ML1014600612010-06-0707 June 2010 Request for Additional Information for Salem Nuclear Generating Station Units 1 and 2 License Renewal Application Regarding Section 3.5 (TAC Nos. ME1834 and ME1836) Project stage: RAI ML1014400812010-06-10010 June 2010 Request for Additional Information for the Review of the Salem Generating Station, Unit 1 and Unit 2, License Renewal Application Identified During the Audit (TAC ME1836 and ME1834) Project stage: RAI ML1014600772010-06-10010 June 2010 Request for Additional Information for Salem Nuclear Generating Station Units 1 and 2 License Renewal Application (TAC ME1832 and ME1836) Project stage: RAI ML1014810092010-06-11011 June 2010 Request for Additional Information for Salem Nuclear Generating Station Units 1 and 2 License Renewal Application Project stage: RAI ML1015504712010-06-11011 June 2010 RAI for Salem Nuclear Generating Station Units 1 and 2 License Renewal Application Sections 3.1.2 and 3.3.2 (TAC No ME1834/ME1836) Project stage: RAI ML1014801892010-06-14014 June 2010 Request for Additional Information for Salem Nuclear Generating Station Units 1 and 2 License Renewal Application Regarding Sections 4.3 and 4.4 (TAC Nos. ME1834 and ME1836) Project stage: RAI ML1013905372010-06-17017 June 2010 Request for Additional Information for Salem Nuclear Generating Station Units 1 and 2 License Renewal Application(Tac Nos ME1834, ME1836) Project stage: RAI ML1016201902010-06-25025 June 2010 Request for Additional Information for Salem Nuclear Generating Station Units 1 and 2, License Renewal Application (Tac ME1834/ME1836) Project stage: RAI ML1016804022010-06-29029 June 2010 Request for Additional Information for Salem Nuclear Generating Station Units 1 and 2, License Renewal Application Regarding Subsection 3.1.2.2.14 (TAC ME1834/ME1836) Project stage: RAI ML1014807262010-06-30030 June 2010 Request for Additional Information for Salem Nuclear Generating Station Units 1 and 2 License Renewal Application Regarding Section B.3.1.1 (TAC Nos. ME1834 and ME1836) Project stage: RAI ML1017203642010-07-12012 July 2010 Request for Additional Information for Salem Nuclear Generating Station Units 1&2 LRA Regarding ASME Section XI ISI, Subsections Iwb,Iwc, and Iwd (TAC Nos. ME1834/ME1836) Project stage: RAI LR-N10-0243, Response to NRC Request for Additional Information Dated June 14, 2010, Related to Sections 4.3 and 4.4 License Renewal Application2010-07-13013 July 2010 Response to NRC Request for Additional Information Dated June 14, 2010, Related to Sections 4.3 and 4.4 License Renewal Application Project stage: Response to RAI ML1019504872010-07-19019 July 2010 Request for Additional Information for the Salem Generating Station, Unit 1 and Unit 2, License Renewal Application, Section 4.6 (TAC Nos. ME1834 and ME1836) Project stage: RAI ML1019606342010-07-23023 July 2010 Request for Additional Information for the Salem Generating Station, Unit 1 and Unit 2, License Renewal Application (TAC ME1834 and ME1836) Project stage: RAI ML1019304962010-07-30030 July 2010 Request for Additional Information for Salem Nuclear Generating Station Units 1 and 2 License Renewal Application (TAC No. ME1834 and Me 1836) Project stage: RAI ML1019504792010-08-0303 August 2010 Request for Additional Information Regarding ASME Section XI, Subsection IWE for the Salem Nuclear Generating Station Units 1 and 2 License Renewal Application (TAC Nos. ME1834 and ME1836) Project stage: RAI ML1019704742010-08-0303 August 2010 Request for Additional Information for Salem Nuclear Generating Station Units 1 and 2 License Renewal Application Regarding Bolting Integrity (TAC Nos. ME1834 and ME1836) Project stage: RAI ML1015402422010-08-0606 August 2010 Request for Additional Information for Salem Nuclear Generating Station Units 1 and 2 License Renewal Application for Buried Piping Inspection Program (TAC Nos. ME1834 and ME1836) Project stage: RAI ML1020004042010-08-0909 August 2010 Request for Additional Information for Salem Nuclear Generating Station Units 1 and 2 License Renewal Application (TAC Nos. ME1834 and ME1836) Project stage: RAI LR-N10-0295, Responses to NRC Requests for Additional Information Dated July 12, 2010, July 19, 2010 and July 23, 2010 Related to Various Sections of License Renewal Application2010-08-10010 August 2010 Responses to NRC Requests for Additional Information Dated July 12, 2010, July 19, 2010 and July 23, 2010 Related to Various Sections of License Renewal Application Project stage: Response to RAI ML1020304172010-08-19019 August 2010 RAI Regarding the Salem Nuclear Generating Station Units 1 and 2 License Renewal Application (TAC ME1834 & ME1836) Project stage: RAI ML1022802112010-08-25025 August 2010 Scoping and Screening Audit Summary Regarding the Salem Nuclear Generating Station, Units 1 and 2, License Renewal Application Project stage: Other LR-N10-0313, Responses to Request for Additional Information Dated 08/03/10, Related to Bolting Integrity and 07/30/10 to Steam Generators and Question Posed During Region 1 Inspection, Regarding License Renewal Application2010-08-26026 August 2010 Responses to Request for Additional Information Dated 08/03/10, Related to Bolting Integrity and 07/30/10 to Steam Generators and Question Posed During Region 1 Inspection, Regarding License Renewal Application Project stage: Response to RAI LR-N10-0322, Response to NRC Request for Additional Information, Dated August 6, 2010 Related to the Buried Piping Inspection Program Associated with License Renewal Application2010-09-0707 September 2010 Response to NRC Request for Additional Information, Dated August 6, 2010 Related to the Buried Piping Inspection Program Associated with License Renewal Application Project stage: Response to RAI ML1024600782010-09-29029 September 2010 RAI for Salem Nuclear Generating Station Units 1 and 2 License Renewal Application (TAC Nos. ME1834 and ME1836) Project stage: RAI ML1026003402010-10-12012 October 2010 RAI for Salem Nuclear Generating Station Units 1 and 2 License Renewal Application for Buried Piping Inspection Program (TAC No. ME1834 and ME1836) Project stage: RAI ML1029102492010-10-25025 October 2010 Request for Additional Information for Salem Nuclear Generating Station, Units 1 and 2, License Renewal Application on Structures Monitoring (TAC No. ME1834 and ME1836) Project stage: RAI ML1029300492010-11-0404 November 2010 Request for Additional Information for Salem Nuclear Generating Station, Units 1 and 2, LRA on Primary Water Stress Corrosion Cracking in Steam Generator Tube-to-Tube Sheet Welds Project stage: RAI ML1030101002010-11-0404 November 2010 Safety Evaluation Report Related to the License Renewal of Salem Nuclear Generating Station, Units 1 and 2 Project stage: Approval ML1031201722010-11-0404 November 2010 Safety Evaluation Report with Open Items Related to the License Renewal of Salem Nuclear Generating Station, Units 1 and 2 Project stage: Approval ML1024305862010-11-0909 November 2010 Audit Report Regarding the Salem Nuclear Generating Station, Units 1 and 2, License Renewal Application (TAC Nos. ME1834 and ME1836) Project stage: Other ML1028101942010-11-22022 November 2010 RAI for Salem Nuclear Generating Station Units 1 and 2 LRA for Use of Westems Program in Metal Fatigue Analysis Project stage: RAI ML1032700762010-12-10010 December 2010 RAI for Salem Nuclear Generating Station Units 1 and 2 LRA Project stage: RAI LR-N10-0414, Response to NRC Request for Additional Information, Dated October 25, 2010, Related to Structures Monitoring Associated with License Renewal Application2010-12-14014 December 2010 Response to NRC Request for Additional Information, Dated October 25, 2010, Related to Structures Monitoring Associated with License Renewal Application Project stage: Response to RAI 2010-06-11
[Table View] |
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Category:Letter
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[Table view] |
Text
UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 November 4, 2010 Mr. Thomas Joyce President and Chief Nuclear Officer PSEG Nuclear LLC P.O. Box 236 Hancocks Bridge, NJ 08038
SUBJECT:
REQUEST FOR ADDITIONAL INFORMATION FOR SALEM NUCLEAR GENERATING STATION, UNITS 1 AND 2, LICENSE RENEWAL APPLICATION ON PRIMARY WATER STRESS CORROSION CRACKING IN STEAM GENERATOR TUBE-TO-TUBESHEET WELDS INSPECTION PROGRAM (TAC NOS. ME1834 AND ME1836)
Dear Mr. Joyce:
By letter dated August 18, 2009, Public Service Enterprise Group Nuclear, LLC, submitted an application pursuant to Title 10 of the Code of Federal Regulations Part 54 for renewal of Operating License Nos. DPR-70 and DPR-75 for Salem Nuclear Generating Station, Units 1 and 2, respectively. The staff of the U.S. Nuclear Regulatory Commission (NRC or the staff) is reviewing this application in accordance with the guidance in NUREG-1800, "Standard Review Plan for Review of License Renewal Applications for Nuclear Power Plants." During its review, the staff has identified areas where additional information is needed to complete the review.
The staff's request for additional information is included in the Enclosure. Further requests for additional information may be issued in the future.
Items in the enclosure were provided to John Hufnagel and other members of your staff, and a mutually agreeable date for the response is within 30 days from the date of this letter. If you have any questions, please contact me by telephone at 301-415-2981 or bye-mail at bennett.brady@nrc.gov.
Sincerely, Bennett M. Brady, Project Manager Projects Branch 1 Division of License Renewal Office of Nuclear Reactor Regulation Docket Nos. 50-272 and 50-311
Enclosure:
As stated cc w/encl: Distribution via Listserv
REQUEST FOR ADDITIONAL INFORMATION FOR SALEM NUCLEAR GENERATING STATION, UNITS 1 AND 2, LICENSE RENEWAL APPLICATION FOR PRIMARY WATER STRESS CORROSION CRACKING IN STEAM GENERATOR TUBE-TO-TUBESHEET WELDS PROGAM (TAC NOS. ME1834 AND ME1836)
RAI3.1.1-03
Background:
Standard Review Plan License Renewal (SRP-LR) Section 3.1.2.2.16 states that cracking due to primary water stress corrosion cracking (PWSCC) could occur on the primary coolant side of pressurized water reactor steel steam generator (SG) tube-to-tubesheet welds made or cladded with nickel alloy. The Generic Aging Lessons Learned (GALL) Report recommends American Society of Mechanical Engineers (ASME) Code Section XI inservice inspection and control of water chemistry to manage this aging and recommends no further aging management review for PWSCC of nickel alloy if the applicant complies with applicable U.S. Nuclear Regulatory Commission (NRC or the staff) Orders and provides a commitment in the Updated Final Safety Analysis Report (UFSAR) supplement to implement applicable (1) Bulletins and Generic Letters and (2) staff-accepted industry guidelines. In GALL Report, Revision 1 Volume 2, this aging is addressed in Item IV. 02-4, applicable only to once-through SGs, but not to recirculating SGs.
The staff notes that ASME Code Section XI does not require any inspection of the tube-to tubesheet welds. In addition, no NRC Orders or bulletins require examination of this weld.
However, the staff's concern is that, if the tubesheet clad is Alloy 600, the tube-to-tubesheet weld region may not have sufficient chromium content to prevent initiation of PWSCC, even when the SG tubes are made from Alloy 690n. Consequently, such a PWSCC crack initiated in this region, close to a tube, could propagate into/through the weld, causing a failure of the weld and of the reactor coolant pressure boundary, for both recirculating and once-through SGs.
In license renewal application (LRA) Table 3.1.1, the applicant stated that item number 3.1.1-35 is not applicable because they do not have once-through SGs and therefore, do not have the components associated with this model of SGs.
In UFSAR Section 5.5.2.2.2, the applicant described that the Unit 1 Model-F steam generator tubes are fabricated from Alloy 600TT and are welded to the Inconel cladding on the primary face of the tube plate. In UFSAR Section 5.5.2.2.1, the applicant stated that the Unit 2 replacement steam generator tubes are fabricated from Alloy 690TT, and that the primary side of the tubesheet is weld clad with Alloy 600. Therefore, despite the fact that it is not an aging effect identified in GALL Revision 1, the staff is concerned that there may exist a similar aging effect for the SGs at Salem, given the similar material and environment of the SGs.
Issue:
Unless the NRC has approved a redefinition of the pressure boundary in which the autogenous tube-to-tubesheet weld is no longer included, or the tubesheet cladding and welds are not susceptible to PWSCC, the staff considers that the effectiveness of the primary water chemistry program should be verified to ensure PWSCC cracking is not occurring.
ENCLOSURE
-2 Request:
(1a) For Unit 1 SGs, clarify whether the tube-to-tubesheet welds are included in the reactor coolant pressure boundary or alternate repair criteria have been permanently approved.
(1 b) If the SGs do not have permanently approved alternate repair criteria, provide a plant specific aging management program (AMP) that will complement the primary water chemistry program, in order to verify the effectiveness of the primary water chemistry program and ensure that cracking due to PWSCC is not occurring in tube-to-tubesheet welds.
(2) For Unit 2 SGs tube-to-tubesheet welds, provide either a plant-specific AMP that will complement the primary water chemistry program, in order to verify the effectiveness of the primary water chemistry program and ensure that cracking due to PWSCC is not occurring in tube-to-tubesheet welds, or a rationale for why such a program is not needed.
November 4,2010 Mr. Thomas Joyce President and Chief Nuclear Officer PSEG Nuclear LLC P.O. Box 236 Hancocks Bridge, NJ 08038
SUBJECT:
REQUEST FOR ADDITIONAL INFORMATION FOR SALEM NUCLEAR GENERATING STATION, UNITS 1 AND 2, LICENSE RENEWAL APPLICATION ON PRIMARY WATER STRESS CORROSION CRACKING IN STEAM GENERATOR TUBE-TO-TUBESHEET WELDS INSPECTION PROGRAM (TAC NOS. ME1834 AND ME1836)
Dear Mr. Joyce:
By letter dated August 18, 2009, Public Service Enterprise Group Nuclear, LLC, submitted an application pursuant to Title 10 of the Code of Federal Regulations Part 54 for renewal of Operating License Nos. DPR-70 and DPR-75 for Salem Nuclear Generating Station, Units 1 and 2, respectively. The staff of the U.S. Nuclear Regulatory Commission (NRC or the staff) is reviewing this application in accordance with the guidance in NUREG-1800, "Standard Review Plan for Review of License Renewal Applications for Nuclear Power Plants." During its review, the staff has identified areas where additional information is needed to complete the review.
The staffs request for additional information is included in the Enclosure. Further requests for additional information may be issued in the future.
Items in the enclosure were provided to John Hufnagel and other members of your staff, and a mutually agreeable date for the response is within 30 days from the date of this letter. If you have any questions, please contact me by telephone at 301-415-2981 or bye-mail at bennett. brady@nrc.gov.
Sincerely, IRAI Bennett M. Brady, Project Manager Projects Branch 1 Division of License Renewal Office of Nuclear Reactor Regulation Docket Nos. 50-272 and 50-311
Enclosure:
As stated cc w/encl: Distribution via Listserv DISTRIBUTION:
See next page ADAMS Accession No ML102930049 *concurrence via e-mail OFFICE LA:DLR PM:DLR:RPB1 BC:DLR:RPB1 PM:DLR:RPB1 NAME YEdmonds
- BBrady BPham BBrady DATE 10/26/10 .10/27/10 10/28/10 11/04/10 OFFICIAL RECORD COpy
Letter to T. Joyce from B. Brady dated November 4,2010
SUBJECT:
REQUEST FOR ADDITIONAL INFORMATION FOR SALEM NUCLEAR GENERATING STATION, UNITS 1 AND 2, LICENSE RENEWAL APPLICATION FOR PRIMARY WATER STRESS CORROSION CRACKING IN STEAM GENERATOR TUBE-TO-TUBESHEET WELDS INSPECTION PROGRAM (TAC NOS. ME1834 AND ME1836)
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