Letter Sequence Request |
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EPID:L-2021-LLR-0084, Relief Request ANO2-RR-21-002, Half-Nozzle Repair of Reactor Vessel Closure Head Penetration 46 (Approved, Closed) |
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Category:Letter
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2024-01-24
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Text
This letter contains proprietary information.
Withhold Enclosures 1 through 5 from public disclosure in accordance with 10 CFR 2.390.
Entergy Operations, Inc.
1340 Echelon Parkway Jackson, MS 39213 Tel 601-368-5138 Ron Gaston Director, Nuclear Licensing 10 CFR 50.55a(z)(1) 2CAN122103 December 10, 2021 ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555
Subject:
Relief Request ANO2-RR-21-002, Half-Nozzle Repair of Reactor Vessel Closure Head Penetration #46 - Submittal of Analyses Arkansas Nuclear One, Unit 2 NRC Docket No. 50-368 Renewed Facility Operating License No. NPF-6 Entergy Operations, Inc. (Entergy) submitted Relief Request ANO2-RR-21-002 for Arkansas Nuclear One, Unit 2 (ANO-2) via Reference 1. A flaw located in the Reactor Vessel Closure Head (RVCH), Penetration #46 was determined to be unacceptable based on requirements of the American Society of Mechanical Engineers Boiler and Pressure Vessel Code (ASME Code).
In Reference 1, Entergy proposed an alternative to the ASME Code repair/replacement requirements as a repair to the ANO-2 RVCH.
The NRC provided their verbal authorization to utilize Relief Request ANO2-RR-21-002 on November 9, 2021 (Reference 2).
As discussed in Reference 1, Entergy committed to supplying the final one-cycle flaw analytical evaluation, evaluation of repair, and the corrosion evaluation. Attached are these analyses. - ANO-2 CEDM Penetration 46 Modification As-Left J-Groove One Cycle Justification, Document Number 32-9338774-001; - OCJ IDTB Weld Anomaly Assessment at CEDM Nozzle No. 46 at ANO-2, Document Number 32-9338933-001; This letter contains proprietary information.
Withhold Attachments 1 through 5 from public disclosure in accordance with 10 CFR 2.390.
This letter contains proprietary information.
Withhold Attachments 1 through 5 from public disclosure in accordance with 10 CFR 2.390.
2CAN122103 Page 2 of 4 - ANO-2 CEDM IDTB Weld Repair One-Cycle Justification, Document Number 32-9338944-001; - "PWSCC Evaluation for ANO-2 CEDM Nozzle Penetration No. 46 IDTB Weld Repair," Document Number 51-9338718-001; - "Corrosion Evaluation of ANO-2 RVCH CEDM IDTB Weld Nozzle Penetration Repair," Document Number 51-9338948-001 Attachments 1 through 5 contain information proprietary to Framatome Inc. (Framatome).
Framatome requests that these documents be withheld from public disclosure in accordance with 10 CFR 2.390(a)(4). Affidavits supporting this request are contained in Attachments 6, 7, 8, 9, and 10. Attachments 11, 12, 13, 14, and 15 contain non-proprietary versions of the Framatome documents.
There are no new regulatory commitments established in this submittal.
If there are any questions or if additional information is needed, please contact Riley Keele, Manager, Regulatory Assurance, Arkansas Nuclear One, at 479-858-7826.
Respectfully, Ronald W. Digitally signed by Ronald W. Gaston Gaston Date: 2021.12.10 08:02:48 -06'00' Ron Gaston RWG/rwc References
- 1. Entergy Operations, Inc. (Entergy) letter to the U. S. Nuclear Regulatory Commission (NRC), "Relief Request ANO2-RR-21-002 Half-Nozzle Repair of Reactor Vessel Closure Head Penetration #46," (2CAN112103), ML21309A007, dated November 5, 2021.
- 2. T. Wengert (NRC email to R. D. Keele, Jr. (Entergy), "Verbal Authorization of Relief Request ANO2-RR-21-002 (EPID L-2021-0084)," (2CNA112102), ML21314A121, dated November 9, 2021.
This letter contains proprietary information.
Withhold Attachments 1 through 5 from public disclosure in accordance with 10 CFR 2.390.
This letter contains proprietary information.
Withhold Attachments 1 through 5 from public disclosure in accordance with 10 CFR 2.390.
2CAN122103 Page 3 of 4 Attachments:
- 1. ANO-2 CEDM Penetration 46 Modification As-Left J-Groove One Cycle Justification, Document Number 32-9338774-001 PROPRIETARY
- 2. OCJ IDTB Weld Anomaly Assessment at CEDM Nozzle No. 46 at ANO-2, Document Number 32-9338933-001 PROPRIETARY
- 3. ANO-2 CEDM IDTB Weld Repair One-Cycle Justification, Document Number 32-9338944-001 PROPRIETARY
- 4. "PWSCC Evaluation for ANO-2 CEDM Nozzle Penetration No. 46 IDTB Weld Repair,"
Document Number 51-9338718-001 PROPRIETARY
- 5. "Corrosion Evaluation of ANO-2 RVCH CEDM IDTB Weld Nozzle Penetration Repair,"
Document Number 51-9338948-001 PROPRIETARY
- 6. Affidavit for Document Number 32-9338774-001
- 7. Affidavit for Document Number 32-9338933-001
- 8. Affidavit for Document Number 32-9338944-001
- 9. Affidavit for Document Number 51-9338718-001
- 10. Affidavit for Document Number 51-9338948-001
- 11. ANO-2 CEDM Penetration 46 Modification As-Left J-Groove One Cycle Justification, Document Number 32-9339466-001 NON-PROPRIETARY
- 12. OCJ IDTB Weld Anomaly Assessment at CEDM Nozzle No. 46 at ANO-2, Document Number 32-9339477-001 NON-PROPRIETARY
- 13. ANO-2 CEDM IDTB Weld Repair One-Cycle Justification, Document Number 32-9339421-001 NON-PROPRIETARY
- 14. "PWSCC Evaluation for ANO-2 CEDM Nozzle Penetration No. 46 IDTB Weld Repair,"
Document Number 51-9339429-001 NON-PROPRIETARY
- 15. "Corrosion Evaluation of ANO-2 RVCH CEDM IDTB Weld Nozzle Penetration Repair,"
Document Number 51-9339414-001 NON-PROPRIETARY This letter contains proprietary information.
Withhold Attachments 1 through 5 from public disclosure in accordance with 10 CFR 2.390.
This letter contains proprietary information.
Withhold Attachments 1 through 5 from public disclosure in accordance with 10 CFR 2.390.
2CAN122103 Page 4 of 4 cc: NRC Region IV Regional Administrator NRC Senior Resident Inspector - Arkansas Nuclear One NRC Project Manager - Arkansas Nuclear One Designated Arkansas State Official This letter contains proprietary information.
Withhold Attachments 1 through 5 from public disclosure in accordance with 10 CFR 2.390.
