Letter Sequence Other |
|---|
|
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MONTHYEARML18186A5452018-07-10010 July 2018
Supplemental Information Needed for Acceptance of Requests to Use ASME Code Cases N-878, N-879, and N-880
Project stage: Acceptance Review
JAFP-18-0075, Proposed Alternatives to Utilize Code Cases N-878, N-879, and N-8802018-07-26026 July 2018
Proposed Alternatives to Utilize Code Cases N-878, N-879, and N-880
Project stage: Request
ML18211A2552018-08-0101 August 2018
Acceptance of Request to Use ASME Code Case N-878 and N-880
Project stage: Acceptance Review
ML18345A1582018-12-11011 December 2018
NRR E-mail Capture - Exelon Generation Company, LLC - Fleet Request to Use ASME Code Cases N-878 and N-880
Project stage: Other
JAFP-19-0006, Response to Request for Additional Information - Proposed Alternative to Utilize Code Cases N-878 and N-8802019-01-0808 January 2019
Response to Request for Additional Information - Proposed Alternative to Utilize Code Cases N-878 and N-880
Project stage: Response to RAI
ML19116A0082019-04-24024 April 2019
NRR E-mail Capture - Exelon Generation Company, LLC - Fleet Request to Use ASME Code Cases N-878 and N-880
Project stage: Other
NMP1L3279, Response to Request for Additional Information - Proposed Alternatives to Utilize Code Cases N-878 and N-880 for Plants2019-05-0101 May 2019
Response to Request for Additional Information - Proposed Alternatives to Utilize Code Cases N-878 and N-880 for Plants
Project stage: Response to RAI
JAFP-19-0057, Response to Request for Additional Information - Proposed Alternative to Utilize Code Cases N-878 and N-8802019-06-0404 June 2019
Response to Request for Additional Information - Proposed Alternative to Utilize Code Cases N-878 and N-880
Project stage: Response to RAI
ML19192A2442019-07-18018 July 2019
Proposed Alternative to Use ASME Code Cases N-878 and N-880
Project stage: Other
2019-01-08
[Table View] |
NRR E-mail Capture - Exelon Generation Company, LLC - Fleet Request to Use ASME Code Cases N-878 and N-880| ML19116A008 |
| Person / Time |
|---|
| Site: |
Calvert Cliffs, Dresden, Peach Bottom, Nine Mile Point, Byron, Three Mile Island, Braidwood, Limerick, Ginna, Clinton, Quad Cities, FitzPatrick, LaSalle  |
|---|
| Issue date: |
04/24/2019 |
|---|
| From: |
Blake Purnell
Plant Licensing Branch III |
|---|
| To: |
Tom Loomis
Exelon Generation Co |
|---|
| References |
|---|
| L-2018-LLR-0077 |
| Download: ML19116A008 (5) |
|
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Text
NRR-DMPSPEm Resource From: Purnell, Blake Sent: Wednesday, April 24, 2019 3:57 PM To: Loomis, Thomas R:(GenCo-Nuc) (thomas.loomis@exeloncorp.com)
Cc: Barstow, James:(GenCo-Nuc); Wrona, David
Subject:
Exelon Generation Company, LLC - Fleet Request to use ASME Code Cases N-878 and N-880 (EPID L-2018-LLR-0077)
Attachments: Exelon N-878 and N-880 RAI 2.docx Mr. Loomis:
By application dated May 30, 2018 (Agencywide Documents Access and Management System Accession No. ML18151A028), as supplemented by letters dated July 26, 2018 (ADAMS Accession No. ML18208A345) and January 8, 2019 (ADAMS Accession No. ML19008A187), Exelon Generation Company, LLC (Exelon, the licensee) submitted a request for a proposed alternative to the requirements of Title 10 of the Code of Federal Regulations (10 CFR) Section 50.55a, Codes and standards, and the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel (BPV) Code for Braidwood Station, Units 1 and 2; Byron Station, Unit Nos. 1 and 2; Calvert Cliffs Nuclear Power Plant, Units 1 and 2; Clinton Power Station, Unit No. 1; Dresden Nuclear Power Station, Units 2 and 3; James A. FitzPatrick Nuclear Power Plant; LaSalle County Station, Units 1 and 2; Limerick Generating Station, Units 1 and 2; Nine Mile Point Nuclear Station, Units 1 and 2; Peach Bottom Atomic Power Station, Units 2 and 3; Quad Cities Nuclear Power Station, Units 1 and 2; R. E. Ginna Nuclear Power Plant; and Three Mile Island Nuclear Station, Unit 1. The proposed alternative would allow the licensee to use ASME Code Case N-878, Alternative to QA [Quality Assurance] Program Requirements of IWA 4142,Section XI, Division 1, and Code Case N 880, Alternative to Procurement Requirements of IWA 4143 for Small Nonstandard Welded Fittings,Section XI, Division 1.
The NRC staff has reviewed the application and determined that it needs additional information to complete its review.
A response to the attached request for additional information is requested to be provided within 30 days from the date of this email. If you have any questions, please contact me at (301) 415-1380.
Sincerely, Blake Purnell, Project Manager Plant Licensing Branch III Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Docket Nos. STN 50-456, STN 50-457, STN 50-454, STN 50-455, 50-317, 50-318, 50-461, 50-237, 50-249, 50-333, 50-373, 50-374, 50-352, 50-353, 50-220, 50-410, 50-277, 50-278, 50-254, 50-265, 50-244, and 50-289 OFFICE NRR/DORL/LPL3/PM NRO/DCIP/QAVB/BC NRR/DMLR/MPHB/BC(A) NRR/DORL/LPL3/BC NAME BPurnell KKavanagh SCumblidge DWrona 1
DATE 4/24/19 4/5/19 4/12/19 4/11/19 2
Hearing Identifier: NRR_DMPS Email Number: 936 Mail Envelope Properties (DM6PR09MB3050D1A857A12540840CE22FE63C0)
Subject:
Exelon Generation Company, LLC - Fleet Request to use ASME Code Cases N-878 and N-880 (EPID L-2018-LLR-0077)
Sent Date: 4/24/2019 3:56:34 PM Received Date: 4/24/2019 3:56:34 PM From: Purnell, Blake Created By: Blake.Purnell@nrc.gov Recipients:
"Barstow, James:(GenCo-Nuc)" <James.Barstow@exeloncorp.com>
Tracking Status: None "Wrona, David" <David.Wrona@nrc.gov>
Tracking Status: None "Loomis, Thomas R:(GenCo-Nuc) (thomas.loomis@exeloncorp.com)" <thomas.loomis@exeloncorp.com>
Tracking Status: None Post Office: DM6PR09MB3050.namprd09.prod.outlook.com Files Size Date & Time MESSAGE 2399 4/24/2019 3:56:34 PM Exelon N-878 and N-880 RAI 2.docx 26163 Options Priority: Standard Return Notification: No Reply Requested: No Sensitivity: Normal Expiration Date:
Recipients Received:
REQUEST FOR ADDITIONAL INFORMATION EXELON GENERATION COMPANY, LLC ALTERNATIVE REQUEST TO USE ASME CODE CASES N-878 AND N-880 DOCKET NOS. STN 50-456, STN 50-457, STN 50-454, STN 50-455, 50-317, 50-318, 50-461, 50-237, 50-249, 50-333, 50-373, 50-374, 50-352, 50-353, 50-220, 50-410, 50-277, 50-278, 50-254, 50-265, 50-244, AND 50-289 By application dated May 30, 2018 (Agencywide Documents Access and Management System Accession No. ML18151A028), as supplemented by letters dated July 26, 2018 (ADAMS Accession No. ML18208A345) and January 8, 2019 (ADAMS Accession No. ML19008A187),
Exelon Generation Company, LLC (Exelon, the licensee) submitted a request for a proposed alternative to the requirements of Title 10 of the Code of Federal Regulations (10 CFR)
Section 50.55a, Codes and standards, and the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel (BPV) Code for Braidwood Station, Units 1 and 2; Byron Station, Unit Nos. 1 and 2; Calvert Cliffs Nuclear Power Plant, Units 1 and 2; Clinton Power Station, Unit No. 1; Dresden Nuclear Power Station, Units 2 and 3; James A. FitzPatrick Nuclear Power Plant; LaSalle County Station, Units 1 and 2; Limerick Generating Station, Units 1 and 2; Nine Mile Point Nuclear Station, Units 1 and 2; Peach Bottom Atomic Power Station, Units 2 and 3; Quad Cities Nuclear Power Station, Units 1 and 2; R. E. Ginna Nuclear Power Plant; and Three Mile Island Nuclear Station, Unit 1. The proposed alternative would allow the licensee to use ASME Code Case N-878, Alternative to QA [Quality Assurance] Program Requirements of IWA-4142,Section XI, Division 1, and Code Case N-880, Alternative to Procurement Requirements of IWA-4143 for Small Nonstandard Welded Fittings,Section XI, Division 1.
The U.S. Nuclear Regulatory Commission has reviewed the application and determined that the information below is needed to complete its review.
Background
Section XI of the ASME BPV Code requires welded and non-welded fittings to be designed in accordance with the original construction code. For repair/replacement activities where the original construction code wasSection III of the ASME BPV Code, subarticles NB/NC/ND-3600, Piping Design, of Section III provide the design requirements for pipe fittings. Paragraph NB-3671.7, Sleeve Coupled and Other Patented Joints, of Section III states:
Mechanical joints, for which no standards exist, and other patented joints may be used provided the requirements of (a), (b), and (c) below are met.
(a) Provision is made to prevent separation of the joints under all Service Loadings.
(b) They are accessible to maintenance, removal, and replacement after service.
(c) Either one of the two following criteria are met.
(1) A prototype joint has been subjected to performance tests to determine the safety of the joint under simulated service conditions. When vibration, fatigue, cyclic conditions, low temperature, thermal expansion, or hydraulic shock is anticipated, the applicable conditions shall be incorporated in the tests. The mechanical joints shall be sufficiently leak tight to satisfy the requirements of the Design Specifications.
(2) Joints are designed in accordance with the rules of NB-3200.
The licensees July 26, 2018, letter states:
Nonstandard, proprietary welded or nonwelded pipe fittings can be proven, by testing, to comply with Section Ill design requirements. Exelon has a supplier of such fittings that does not possess ASME accreditation as a Quality System Certificate Holder or an NPT Certificate Holder. Exelon cannot find any supplier of equivalent products that possesses the accreditation required by ASME Section Ill. However, these products can be verified as having an acceptable level of safety by complying with the provisions specified in ASME Cases N-878 and N-880.
For both code cases, the July 26, 2018, letter also states: Exelon will also ensure that the materials, design, fabrication, installation, and testing of these fittings complies fully with ASME Section Ill, as required by ASME Section XI.
Request For repair/replacement activities where the construction code isSection III of the ASME BPV Code, explain how Exelon will ensure that the requirements of Section III will be met when the design and testing activities associated with the qualification of non-welded and welded fittings is performed by a fabricator that does not have a QA program in accordance with Appendix B to 10 CFR Part 50, NQA-1, or ASME Certificate of Authorization. The response should address:
(1) review of design documentation; (2) the performance of the fabricators qualification testing of fittings used to ensure compliance with the Owners design specifications and paragraphs NB/NC/ND-3671.7 of ASME BPV Code,Section III; and (3) Authorized Nuclear Inservice Inspector involvement.