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MONTHYEARML16355A3462016-12-14014 December 2016 Proposed Alternative to ASME Section XI Requirements for Repair/Replacement of Circulating and Service Water Class 3 Buried Piping in Accordance with 10 CFR 50.55a(Z)(1) Project stage: Request ML17033A2832017-02-0606 February 2017 Supplemental Information Needed for Acceptance of Requested Licensing Action Proposed Alternative to ASME Section XI Requirements in Accordance with 10CFR 50.55a(z)(1) Project stage: Acceptance Review ML17031A1302017-02-23023 February 2017 Request for Withholding Information from Public Disclosure Project stage: Withholding Request Acceptance ML17055C3602017-02-23023 February 2017 Submittal of Supplement to Proposed Alternative to ASME Section XI, Requirements for Repair/Replacement of Buried Circulating and Service Water Class 3 Piping with Carbon Fiber Reinforced Polymer Project stage: Supplement ML17030A0812017-02-24024 February 2017 Request for Withholding Information from Public Disclosure Project stage: Withholding Request Acceptance ML17251A9002017-06-0505 June 2017 Enclosure 2, Attachment E to 17-296, WEKO-SEAL - Recommended Installation Procedures for Water and Waste-Water Piping, Miller Pipeline, Revised 03/05/17 Project stage: Request ML17156A0832017-07-0303 July 2017 Non-Prop RAI - Regarding Proposed Alternative to ASME Section XI Requirements for Repair/Replacement of Circulating and Service Water Class 3 Buried Piping in Accordance with 10 CFR 50.55a(z)(1) (CAC Nos. MF8987-88) Project stage: RAI ML17251A8952017-08-31031 August 2017 Proposed Alternative to ASME Section XI Requirements for Repair/Replacement of Buried Circulating and Service Water Class 3 Piping with Carbon Fiber Reinforced Polymer Response to Request for Additional Information Project stage: Response to RAI ML17264A2272017-10-20020 October 2017 Request for Withholding Information from Public Disclosure Project stage: Withholding Request Acceptance ML17277A2962017-11-0202 November 2017 Request for Withholding Information from Public Disclosure (CAC Nos. MF8987 and MF8988; EPID L-2016-LLR-0019) Project stage: Withholding Request Acceptance ML17303A0682017-12-20020 December 2017 Nonproprietary Relief from the Requirements of the ASME Code (CAC Nos. MF8987 and MF8988; EPID L-2016-LLR-0019) Project stage: Approval ML18068A0642018-03-26026 March 2018 Relief from the Requirements of the ASME Code Repair/Replacement of Buried Circulating and Service Water Class 3 Piping with Carbon Fiber Reinforced Polymer (CAC Nos. MF8987 and MF8988; EPID L-2016-LLR-0019) Project stage: Approval 2017-02-24
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UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 February 6, 2017 Mr. Daniel G. Stoddard President and Chief Nuclear Officer Virginia Electric and Power Company Innsbrook Technical Center 5000 Dominion Blvd.
Glenn Allen, VA 23060-6711
SUBJECT:
SURRY, UNIT NOS. 1 AND 2 - SUPPLEMENTAL INFORMATION NEEDED FOR ACCEPTANCE OF REQUESTED LICENSING ACTION RE: PROPOSED ALTERNATIVE TO ASME SECTION XI REQUIREMENTS FOR REPAIR/REPLACEMENT OF CIRCULATING AND SERVICE WATER CLASS 3 BURIED PIPING IN ACCORDANCE WITH 10CFR 50.55a(z)(1) (CAC NOS.
MF8987 AND MF8988)
Dear Stoddard:
By letter dated December 14, 2016 Agencywide Documents Access and Management System (ADAMS) Accession Number ML16355A337), Virginia Electric and Power Company (Dominion),
submitted a relief request (RR) for Surry Units 1 and 2. The relief request proposes an alternative to the requirements of the American Society of Mechanical Engineers Boiler and Pressure Vessel Code,Section XI, IWA-4000. The RR proposes to apply a carbon fiber reinforced polymer system for the internal repair of buried circulating water and service water piping at Surry Power Station Units 1 and 2. The purpose of this letter is to provide the results of the U.S. Nuclear Regulatory Commission (NRC) staff's acceptance review of this relief request.
The acceptance review was performed to determine if there is sufficient technical information in scope and depth to allow the NRC staff to complete its detailed technical review. The acceptance review is also intended to identify whether the application has any readily apparent information insufficiencies in its characterization of the regulatory requirements or the licensing basis of the plant.
Pursuant to Sections 50.55a(z)(1) and 50.55a(z)(2) of Title 10 of the Code of Federal Regulations (10 CFR), the applicant shall demonstrate that the proposed alternatives would provide an acceptable level of quality and safety, or that compliance with the specified requirements of Section 50.55a would result in hardship or unusual difficulty without a compensating increase in the level of quality or safety.
The NRC staff has reviewed your application and concluded that it did not provide the technical information in sufficient detail to enable the NRC staff to complete its detailed review and make an independent assessment regarding the acceptability of the proposed amendment/relief request in terms of regulatory requirements and the protection of public health and safety and the environment.
D. Stoddard In order to make the application complete, the NRC staff requests that Dominion supplement the application to address the information requested in the enclosure by February 27, 2017.
This will enable the NRC staff to begin its detailed technical review. If the information responsive to the NRC staff's request is not received by the above date, the application will not be accepted for review pursuant to 10 CFR 2.101, and the NRC will cease its review activities associated with the application. If the application is subsequently accepted for review, you will be advised of any further information needed to support the staff's detailed technical review by separate correspondence.
The information requested and associated time frame in this letter were discussed with Gary Miller of your staff on Monday, February 6, 2017.
If you have any questions, please contact the Surry Project Manager, Karen Cotton Gross, at (301) 415-1438 or be e-mail at Karen.Cotton@nrc.gov.
Sincerely,
~~~~
Karen Cotton Gross, Project Manager Plant Licensing Branch 2-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos: 50-280 and 50-281
Enclosure:
As stated cc w/encl: Distribution via Listserv
SUPPLEMENTAL INFORMATION NEEDED PROPOSED ALTERNATIVE TO ASME SECTION XI REQUIREMENTS FOR REPAIR/REPLACEMENT OF CIRCULATING AND SERVICE WATER CLASS 3 BURIED PIPING IN ACCORDANCE WITH 10 CFR 50.55a(z)(1)
VIRGINIA ELECTRIC AND POWER COMPANY.
SURRY POWER STATION UNITS 1AND2 LIST OF INSUFFICIENCIES
- 1. American Society of Mechanical Engineers (ASME)Section XI, IWA-4221 (b) requires repair/replacement piping to meet the original Construction Code requirements for the Circulating Water (CW) and Service Water (SW) piping. However, the applicable Construction Code for Surry does not provide the requirements for the design, fabrication, installation, examination and testing of Carbon Fiber Reinforced Polymer (CFRP) in buried piping.
The application identifies 15 separate repairs using CFRP. The submittal lacks sufficient analyses or technical evaluations to demonstrate structural integrity for these 15 separate repairs using CFRP. Attachment 5C, in Enclosure 5, of the application provides a typical calculation.
- a. Please provide a summary of design inputs to include loads, pressures, temperatures, geometrical inputs, CFRP layers, thicknesses, and bonding length used for the analysis and evaluations of these 15 repairs.
- b. Please provide a summary of the results of all analysis and evaluations to include circumferential design analysis, buckling evaluations, longitudinal design analysis, bond integrity at terminations for the applicable load combinations, corresponding allowable limits, and margins for each of 15 of the repairs using CFRP.
- 2. Analytical methodology Change: ASME Codes and Standards for piping analysis are discussed in Title 10 of the Code of Federal Regulations, Part 50.55a. Piping analysis for safety related class 3 piping in ASME Subsection ND does not utilize the Load and Resistance Factor Design (LRFD) method. The application describes using a LRFD methodology that has never been used for analysis of safety related class 3 piping.
- a. Please provide a justification and rationale for applying this LRFD methodology for safety related ASME Class 3 piping.
- b. Please provide a discussion of the analysis method used in the original design for class 3 circulating water and service water piping and any variances from applying both methods to include at the terminal ends where CFRP overlaps with the intact steel pipe.
ML17033A283 *by email correspondence OFFICE NRR/DORL/LPL2-1 /PM NRR/DORL/LPL2-1 /LA NRR/DE/EMCB/BC NAME KCotton KGoldstein JQuichocho*
DATE 02/06/17 02/06/17 02/06/17 OFFICE NRR/DE/EMCB/BC NRR/DORL/LPL2-1 /BC NRR/DORL/LPL2-1 /PM NAME DAiiey* MMarkley KCotton DATE 12/28/16 02/06/17 02/06/17