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MONTHYEARRA-22-0017, Supplement to Application to Revise Technical Specifications to Adopt TSTF-577, Revised Frequencies for Steam Generator Tube Inspections2022-01-0606 January 2022
Supplement to Application to Revise Technical Specifications to Adopt TSTF-577, Revised Frequencies for Steam Generator Tube Inspections
Project stage: Supplement
ML22012A3662022-01-12012 January 2022
Acceptance of Requested Licensing Action License Amendment Re2uest for Application to Revise Technical Specification to Adopt TSTF-577, Revised Frequencies for Steam Generating Tube Inspections
Project stage: Acceptance Review
ML22080A0042022-03-18018 March 2022
Request for Additional Information Regarding License Amendment Request to Revise Technical Specifications to Adopt TSTF-577, Revised Frequencies for Steam Generator Tube Inspections
Project stage: RAI
RA-22-0106, Response to Request for Additional Information Regarding Application to Revise Technical Specifications to Adopt TSTF-577, Revised Frequencies for Steam Generator Tube Inspections2022-04-28028 April 2022
Response to Request for Additional Information Regarding Application to Revise Technical Specifications to Adopt TSTF-577, Revised Frequencies for Steam Generator Tube Inspections
Project stage: Response to RAI
ML22125A1942022-05-12012 May 2022
Request for Withholding Information from Public Disclosure for H.B. Robinson Steam Electric Plant, Unit 2
Project stage: Withholding Request Acceptance
PMNS20220536, Duke Energy Progress, LLC Discussion Regarding TSTF-577 Request for Additional Information Response Regarding for the H. B. Robinson Steam Electric Plant, Unit No. 22022-05-25025 May 2022
Duke Energy Progress, LLC Discussion Regarding TSTF-577 Request for Additional Information Response Regarding for the H. B. Robinson Steam Electric Plant, Unit No. 2
Project stage: RAI
ML22166A0182022-07-0707 July 2022
Summary of June 13, 2022, Closed Meeting with Duke Energy Progress, Llc to Discuss Licensee Responses Provided to a Request for Additional Information Associated with a License Amendment Request to Adopt Technical Specifications Task Force
Project stage: RAI
RA-22-0210, Supplement to License Amendment Request to Adopt Technical Specifications Task Force (TSTF) Traveler TSTF-577, Revised Frequencies for Steam Generator Tube Inspections2022-07-28028 July 2022
Supplement to License Amendment Request to Adopt Technical Specifications Task Force (TSTF) Traveler TSTF-577, Revised Frequencies for Steam Generator Tube Inspections
Project stage: Supplement
ML22213A0682022-08-0505 August 2022
Request for Withholding Information from Public Disclosure for H. B. Robinson Steam Electric Plant, Unit 2
Project stage: Withholding Request Acceptance
PMNS20220916, Public Meeting with Duke Energy to Discuss a Planned TSTF-577, Revised Frequencies for Steam Generator Tube Inspections, Revision 1, License Amendment Request Supplement for H. B. Robinson Steam Electric Plant, Unit No. 22022-09-0909 September 2022
Public Meeting with Duke Energy to Discuss a Planned TSTF-577, Revised Frequencies for Steam Generator Tube Inspections, Revision 1, License Amendment Request Supplement for H. B. Robinson Steam Electric Plant, Unit No. 2
Project stage: Meeting
ML22257A2392022-09-14014 September 2022
Presentation Slides for September 14, 2022, Observation Public Meeting
Project stage: Meeting
ML22262A2882022-10-0303 October 2022
Summary of September 14, 2022, Observation Public Meeting with Duke Energy Progress, LLC to Discuss a Planned TSTF-577, Rev. 1, License Amendment Request Supplement for H. B. Robinson Steam Electric Plant, Unit No. 2
Project stage: Meeting
RA-22-0280, Supplement to License Amendment Request to Adopt Technical Specifications Task Force (TSTF) Traveler TSTF-577, Revised Frequencies for Steam Generator Tube Inspections2022-10-0404 October 2022
Supplement to License Amendment Request to Adopt Technical Specifications Task Force (TSTF) Traveler TSTF-577, Revised Frequencies for Steam Generator Tube Inspections
Project stage: Supplement
ML22294A0922022-12-15015 December 2022
Issuance of Amendment No. 273 Regarding Adoption of TSTF-577, Revised Frequencies for Steam Generator Tube Inspections, Revision 1
Project stage: Approval
2022-04-28
[Table View] |
Text
Duke Energy/NRC Observation Meeting: Robinson LAR to Adopt TSTF-577, Rev. 1 September 14, 2022
Duke Energy Attendees Mike Classe (GM Nuclear Engineering, Robinson)
Ryan Treadway (Director, Nuclear Fleet Licensing)
Etienne Fonteneau (Manager, Steam Generator Programs Engineering)
Dan Mayes (Principal Engineer, Steam Generator Programs Engineering)
Jordan Vaughan (Lead Nuclear Engineer, Nuclear Fleet Licensing)
Chris Courtenay (Lead Nuclear Engineer, Nuclear Fleet Licensing)
Tim Thulien (Lead NDE Specialist (ECT Level III), Materials Integrity) 2 2
Technical Specifications Application for Unplugged Tube Existing Proposed Change in LAR under NRC review: Perform next 100% eddy current inspection of SG tubes during Refuel 35 (targeted to begin November 2026)
Issue/Problem Statement: Although recent inspection history demonstrates no wear growth for B SG tube R3C5, Technical Specification (TS) 5.5.9.c projected plugging limit criteria will be exceeded prior to Refuel 35.
Specifically, after applying TS 5.5.9.cs 2% per year reduction to the 47% plugging criteria, R3C5s 38% through-wall (TW) indication exceeds the calculated 72-month criteria of 37% TW. The projection from Dec. 2020 is represented as follows:
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Proposed LAR Supplement Duke Energy proposes to remove the time-based aspect of the tube plugging criteria in TS 5.5.9.c, as follows:
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Proposed LAR Supplement The proposed LAR supplement would align the Robinson provisions for SG tube plugging criteria in the SG Program TS to that of NUREG-1431 (Standard Technical Specifications for Westinghouse plants).
The time-based reduction component of the SG tube plugging criteria was added to the Robinson TS upon the issuance of Amendment No. 44 on November 17, 1979 (ADAMS Accession No. ML020500754) and was carried through to conversion to Improved TS (ITS).
At the time of adoption in 1979 until 1984, Robinson had 600 mill-annealed (MA) SG tubes. The replacement (existing) Robinson SGs have 600 thermally-treated (TT) tubes. The time-based element was very site-specific and should have been removed when the original SGs were replaced in 1984.
The 2% reduction in plugging limit per 12-month period was added to address wastage (thinning) indications in the original Robinson SGs with 600MA tubes. Due to existing chemistry treatment, wastage is not an issue in the existing 600TT tubes.
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Proposed LAR Supplement The proposed LAR supplement also revises the SG tube plugging criteria in TS 5.5.9.c to be 40% of the nominal tube wall thickness instead of 47% of the nominal tube wall thickness.
This change is conservative relative to the existing TS 5.5.9.c.
The 47% value was determined for the 600MA SG tubes and was approved in the November 1979 SE. This value should not apply to the replacement (existing) 600TT SG tubes. A value of 40% is consistent with STS and other Westinghouse plants in the industry.
With the proposed supplement, Robinson would align with STS for Westinghouse plants and B SG tube R3C5 would not exceed the tube plugging criteria prior to the next inspection during Refuel 35 (November 2026).
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