ML23122A137
| ML23122A137 | |
| Person / Time | |
|---|---|
| Issue date: | 05/02/2023 |
| From: | Anchondo-Lopez I Office of Nuclear Reactor Regulation |
| To: | NRC/RES/DE |
| Isaac Anchondo-Lopez 817-200-1152 | |
| Shared Package | |
| ML23122A125 | List: |
| References | |
| Download: ML23122A137 (14) | |
Text
NRC Activities in Advanced Manufacturing Technology Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission NDE of AMT Workshop NRC Headquarters May 2-3, 2023
Advanced Manufacturing Technologies
- Techniques and material processing methods that have not been:
Traditionally used in the U.S. nuclear industry Formally standardized/codified by the nuclear industry
- NRC Goal: To proactively prepare staff for efficient, effective, and transparent regulatory review of AMT submissions Initial focus areas Laser powder bed fusion (LPBF)
Laser direct energy deposition (L-DED)
Cold spray (CS)
Electron beam welding (EBW)
Power metallurgyhot isostatic pressing (PM-HIP) 2 May 2-3, 2023, NDE of AMT Technical Exchange
Action Plan - Rev. 1, June 2020
- Task 1 - Technical Preparedness
Technical information, knowledge and tools to prepare NRC staff to review AMT applications
- Task 2 - Regulatory Preparedness
Regulatory guidance and tools 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
- Integration of information from external organizations into the NRC staff knowledge base for informed regulatory decision-making
- External interactions and knowledge sharing, i.e. this technical exchange meeting ADAMS No. ML19333B980 3
May 2-3, 2023, NDE of AMT Technical Exchange
Technical Letter Report LPBF Technical Letter Report DED Technical Letter Report Cold Spray Subtask 2C Draft Guidelines Document for AMTs AMT-Specific Generic Technical (Subtask 1A)
Possible Final Guidance for Initial AMTs in future effort Regulatory Preparedness (Task 2)
Technical Letter Report PM-HIP Spray Technical Letter Report EBW NRC Staff-developed Contractor-developed Legend Technical Context Document LPBF Draft Guidelines Document LPBF Draft Guidelines Document DED Technical Context Document DED Draft Guidelines Document Cold Spray Technical Context Document Cold Spray Draft Guidelines Document PM-HIP Technical Context Document PM-HIP Technical Context Document EBW Draft Guidelines Document EBW Subtask 2A Implementation using the 50.59 Process Action Plan Tasks Task 1: Technical Preparedness
Subtask 1A:AMT Processes under Consideration
Subtask 1B: Inspection and Non-Destructive Examination (NDE)
Subtask 1C: Modeling and Simulation of Microstructure and Properties Task 2: Regulatory Preparedness
Subtask 2A: Implementation using the 10 CFR 50.59 Process
Subtask 2B: Assessment of Regulatory Guidance
Subtask 2C: AMT Draft Guidelines Document Task 3: Communications and Knowledge Management
Subtask 3A: Internal Interactions
Subtask 3B: External Interactions
Subtask 3C: Knowledge Management
Subtask 3D: Public Workshop May 2-3, 2023, NDE of AMT Technical Exchange 4
Action Plan Reports Technical Letter Report/
Technical Assessment Draft Guidelines Documents LPBD ML20351A292 ML21074A040 L-DED ML21301A077 ML22143A951 CS ML21263A105 ML22143A952 EBW ML22143A927 future workas industry projects are completed PM-HIP ML22164A437 Subject ADAMS Accession No.
AMT Action Plan, Rev. 1 ML19333B980 Draft review guidelines ML21074A037 Implementation with 10 CFR 50.59 process ML21155A043 Assessment of regulatory guidance ML20233A693 NDE gap analysis ML20349A012 Modeling gap analysis: microstructure ML20269A301 Modeling gap analysis: performance ML20350B550 Generic Technology specific May 2-3, 2023, NDE of AMT Technical Exchange 5
NRC AMT Public Website Contains AMT-related documents and information
NRC Perspective on AMT in US Nuclear Industry
- Regulatory review preparations highly depend on awareness of industry interests, developments and advances
- A couple of parts have been introduced into US plants using the 50.59 process
- AMTs do not appear to be a high priority for safety related components in the current US LWR fleet
- Potential interest for SMR and advanced reactors
- Codes and standards development is a key enabler
- Limited data is a challenge, esp. environmental effects (corrosion, irradiation)
- International developments:
L-DED fabrication of a 3 class 1 valve - Korea Installation of AM water impeller - Slovenia May 2-3, 2023, NDE of AMT Technical Exchange 6
NRC Chair - visit to Advanced Manufacturing Pilot Facility at Georgia Tech
Current Regulatory Pathways
- Rulemaking
- License amendment (technical specification change, etc)
- 10 CFR 50.59 Changes, tests and experiments
Subtask 2A of AMT Action Plan, Rev 1
One component installed via this method
- 10 CFR 50.55a Codes and Standards
Endorsement of Code edition and Code cases on AMTs
(z) alternatives to codes and standards Least likely Most likely May 2-3, 2023, NDE of AMT Technical Exchange 7
Ongoing Staff Codes and Standards Activities
- ASME Special Committee on Use of Additive Manufacturing for Pressure Retaining Equipment
Developed criteria qualification document for LPBF - ASME PTB plans to add DED
316L LPBF Data Package and Code Case under development
Arc DED Data Package and Code Case under development - multiple materials
- ASME Section III WG on AM (MF&E) Working Group on Advanced Manufacturing
Developing rules for fabrication of AM items, including support of AM Code Cases and new Section III Appendix for materials produced by AM processes
Process groups: PM/HIP, DED, QA Requirements
- ASME Section III, Division 5 Task Group on AM for High Temperature Applications
Developing Code actions for incorporating AM materials/components in ASME Section III, Division 5 (high temperature reactors) for elevated temperature nuclear construction
First application is PM-HIP May 2-3, 2023, NDE of AMT Technical Exchange 8
NDE Gap Assessment
- Survey of Pre-Service and In-Service Nondestructive Evaluation Techniques of AMT-Fabricated Components (ML20349A012)
-Literature search and gap analysis applicable to the NDE of AMT components with an emphasis on methodologies used in the nuclear industry.
-21 gaps were identified and ranked as High, Medium, or Low Priority based on anticipated needs for pre-service and in-service NDE.
- PNNL identified eight High Priority gaps to address key questions:
- 1. What flaws need to be found?
- 2. What sections of the component volume should be inspected?
- 3. How will the critical flaws be identified?
May 2-3, 2023, NDE of AMT Technical Exchange 9
High Priority NDE Gaps - PNNL TLR May 2-3, 2023, NDE of AMT Technical Exchange 10 1.
Identification of expected flaws and characteristics 2.
Defect acceptance standards 3.
Determination of applicable NDE methods 4.
Validation of NDE techniques with destructive testing 5.
Determination of effects of AMT grain structures on UT 6.
Definitions of the relevant inspection volume 7.
Required level of component surface finish 8.
Size limitations for inspection of large components
PNNL High Priority Gap Detail May 2-3, 2023, NDE of AMT Technical Exchange 11
NRC Activities - Moving Forward May 2-3, 2023, NDE of AMT Technical Exchange 12
- Research tasks include:
- Assessment of 2 additional AMTs: Arc DED and diode laser cladding
- Long-term performance, environments (i.e., irradiation, corrosion, etc)
- NRC AMT Workshop: Oct. 2023
- Continue NRC participation in ASME Code activities
- Continue NRC involvement in AM standardization efforts
-Possible collaboration leading to share of mockups and test results.
NRC AMT Point-of-contact Office of Nuclear Regulatory Research Isaac Anchondo-Lopez NDE of AMT isaac.anchondo-lopez@nrc.gov Eric Focht Overall AMT Agency Efforts eric.focht@nrc.gov Rob Tregoning Senior Level Technical Advisor robert.tregoning@nrc.gov Office of Nuclear Regulatory Research Carolyn Fairbanks Overall AMT Agency Efforts carolyn.fairbanks@nrc.gov David Rudland Senior Level Technical Advisor david.rudland@nrc.gov John Wise Senior Level Technical Advisor john.wise@nrc.gov May 2-3, 2023, NDE of AMT Technical Exchange 13