ML22143A830
| ML22143A830 | |
| Person / Time | |
|---|---|
| Issue date: | 05/25/2022 |
| From: | Carolyn Fairbanks NRC/NRR/DNRL/NVIB |
| To: | |
| Kalikian R, 301-415-5590 | |
| Shared Package | |
| ML22143A408 | List: |
| References | |
| Download: ML22143A830 (13) | |
Text
Industry / NRC Materials Programs Technical Information Exchange Advanced Manufacturing Technologies Action Plan, Rev. 1 Carolyn Fairbanks U.S. Nuclear Regulatory Commission Office of Nuclear Reactor Regulation Division of New and Renewed Licenses Vessels and Internals Branch May 25-26, 2022
Advanced Manufacturing Technologies
- Techniques and material processing methods
- Not traditionally used in the U.S. nuclear industry
- Not formally standardized/codified by the nuclear industry
- AMTs can include new ways to fabricate or join components, surface treatments, or other processing techniques to provide a performance or operational benefit.
- Initial AMTs based on industry interest:
- Laser Powder Bed Fusion (LPBF)
- Laser Direct Energy Deposition (L-DED)
- Cold Spray
- Electron Beam Welding
- Powder Metallurgy - Hot Isostatic Pressing (PM-HIP) 2
First US Application of AMTs
- Thimble Plugging Device
- Installed in March 2020 in Byron
- 316L stainless steel -LPBF
- Very low safety significant component (Non ASME B&PV Code class)
- PWR environment with irradiation
- Installation done without prior NRC approval under Title 10 of the Code of Federal Regulations (10 CFR) 50.59 3
Second US Application of AMTs
- Fuel assembly hardware
- Installed in Spring 2021 in Browns Ferry
- ORNL printed Framatomes winged channel fastener body
- 316L stainless steel - LPBF
- 4 will be installed, harvesting one each cycle from 2023-2027 4
Action Plan, Rev. 1 - Tasks
- Task 1 - Technical Preparedness
- Technical information, knowledge and tools to prepare NRC staff to review AMT applications
- Task 2 - Regulatory Preparedness
- Guidelines to prepare staff for efficient and effective review of AMT-fabricated components submitted to the NRC for review and approval
- Task 3 - Communications and Knowledge Management 5
- Integration of information from external organizations into the NRC staff knowledge base for informed regulatory decision-making
- External interactions and knowledge sharing, i.e. AMT Workshop
Technical Preparedness Activities (Task 1)
Subtask 1A: AMT Processes under Consideration
- Perform a technical assessment of selected AMTs (Laser Powder Bed Fusion, Directed Energy Deposition, PM HIP, EB-welding, and Cold Spray)
- Gap assessment for each selected AMTs vs traditional manufacturing techniques Subtask 1B: Inspection and NDE
- Assess the state of technologies in the testing and examination of AMTs
- Will inform staff decisions related to use of NDE on AMT-fabricated components Subtask 1C: Modeling and Simulation of Microstructure and Properties
- Evaluate modeling and simulation tools used to predict the initial microstructure, material properties and component integrity of AMT components
- Identify existing gaps and challenges that are unique to AMT compared to conventional manufacturing processes
- Survey of Modeling and Simulation Techniques for Advanced Manufacturing Technologies:
- Volume I - Predicting Initial Microstructures
- Volume II - Predicting Material Performance from Material Microstructure 6
Regulatory Preparedness Activities (Task 2)
Subtask 2A: Implementation using the 10 CFR 50.59 Process
- Provide guidance and support to regional inspectors regarding AMTs implemented under 50.59 Subtask 2B: Assessment of Regulatory Guidance
- Assess whether any regulatory guidance needs to be updated or created to clarify the process for reviewing submittals with AMT components Subtask 2C: AMT Guidelines Document
- Develop guidelines which describe the generic technical information to be addressed in AMT submissions
- Public meeting September 16, 2021 7
Location/Dates: Virtual, December 7-10, 2020 Objectives Discuss ongoing activities related to AMTs, including nuclear industry implementation plans, codes and standards activities, research findings, and regulatory approaches in other industries.
Inform public of NRCs activities and approach to approving use of AMTs.
Determine, with input from nuclear industry stakeholders and other technical organizations, areas where NRC should focus to ensure safe implementation of AMTs Participants ASME, US DOE, NIST, FAA, NASA, FDA, EPRI, NEI, Westinghouse, GE Hitachi, Kairos, VRC Metal Systems, Exelon, ORNL, PNNL, ANL, INL 8
Communications and Knowledge Management (Task 3)
Public Workshop on AMTs for Nuclear Applications
- A Technical Letter Report (TLR) is produced for each of the initial five AMTs
- Provides technical basis information and gap analysis
- Written by NRC contractor (to date, DOE labs)
- A technical assessment (TA) is produced for each TLR by NRC staff that provides the NRC staff perspective on key aspects of the AMT for safety and component performance
- A draft guidelines document (DGD), informed by the TA and TLR, will be generated by the NRC staff for each AMT.
- The AMT-specific DGDs accompany and align with the generic Advanced Manufacturing Technologies Review Guidelines NRC AMT Guidelines Development Technical Letter Report LPBF ML20351A292 Technical Letter Report L-DED ML20233A693 Technical Letter Report Cold Spray ML21263A105 AMT-Specific (Initial 5 AMTs)
Generic Technical (Subtask 1A)
Final Guidance for Initial AMTs Regulatory Guidelines (draft for FRN public comment)
Technical Letter Report PM-HIP Technical Letter Report EBW NRC Staff-developed Contractor-developed Legend Technical Assessment LPBF ML20351A292 Draft Guidelines Document LPBF ML21074A040 Draft Guidelines Document L-DED Technical Assessment L-DED ML20233A693 Draft Guidelines Document Cold Spray Technical Assessment Cold Spray ML21263A105 Draft Guidelines Document PM-HIP Technical Assessment PM-HIP Technical Assessment EBW Draft Guidelines Document EBW Expected to be developed later after DOE-EPRI demo project Subtask 2C Draft AMT Review Guidelines ML21074A037 9
Status of Deliverables - Task 1 Subtask Actions/Deliverables Status 1A AMT processes under consideration Additive Manufacturing (AM) - Laser Powder Bed Fusion Complete - ML20351A292 AM - Directed Energy Deposition (DED)
Complete - ML20233A693 Cold Spray Complete - ML21263A105 Powder Metallurgy (PM) - Hot Isostatic Pressing (HIP)
Complete Electron Beam (EB) welding Complete 1B Inspection and NDE PNNL NDE gap analysis Complete - ML20349A012 1C Modeling and Simulation of Microstructure ANL M&S gap analysis to predict microstructure Complete - ML20269A301 ANL M&S gap analysis to predict material performance Complete - ML20350B550 10
Status of AMT Draft Guidelines Development Guideline Topic Status AMTs Draft guidelines discussed at Sept. 16 public meeting:
ML21074A037 - Draft AMT Review Guidelines ML21074A040 - Draft Guidelines Document for AM - LPBF Additive Manufacturing (AM) - Laser Powder Bed Fusion AM - Directed Energy Deposition (DED)
Draft guidelines complete Cold Spray Draft guidelines complete Powder Metallurgy (PM) - Hot Isostatic Pressing (HIP)
Draft guidelines not being developed at this time due to the state of these technologies and a specific ongoing research program to demonstrate their viability led by EPRI.
Electron Beam (EB) welding
Status of Deliverables - Tasks 2 and 3 Subtask Actions / Deliverables Status 2A 50.59 process Finalize document incorporating feedback from Regional staff regarding the 10 CFR 50.59 process Complete - ML21200A222 2B Assessment of regulatory guidance Path forward on guidance development or modification Complete - ML20233A693 2C AMT Guidance Document Public meeting on guidance concept / framework summary: ML20240A077 Develop a document that describes the generic technical information to be addressed in AMT submittals.
Public meeting held on September 16, 2021 to discuss:
ML21074A037 - Draft AMT Review Guidelines ML21074A040 - Draft Guidelines Document for AM -
LPBF Public meeting to discuss draft document 3D Workshop Hold Public Workshop Complete - summary: ML20357B071 RIL: Part 1 Part 2 12