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 Initial focus areas Laser powder bed fusion methods that have not been: (LPBF)
Traditionally used in the U.S. nuclear Laser direct energy industry deposition (L-DED)
Formally standardized/codified by the Cold spray (CS) nuclear industry Electron beam welding (EBW)
- NRC Goal: To proactively prepare staff for Power metallurgyhot efficient, effective, and transparent isostatic pressing (PM-regulatory review of AMT submissions HIP)
May 2-3, 2023, NDE of AMT Technical Exchange 2
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 ADAMS No. ML19333B980
- 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 May 2-3, 2023, NDE of AMT Technical Exchange 3
Action Plan Tasks AMT-Specific Generic Technical Task 1: Technical Preparedness Regulatory Preparedness (Subtask 1A) (Task 2)
Subtask 2A Subtask 1A:AMT Processes under Consideration Technical Draft Implementation Technical Subtask 1B: Inspection and Non-Destructive Letter Report Context Guidelines using the 50.59 Examination (NDE) LPBF Document Document Process LPBF LPBF Subtask 1C: Modeling and Simulation of Microstructure and Properties Technical Technical Draft Letter Report Context Guidelines Task 2: Regulatory Preparedness DED Document DED Document DED Subtask 2A: Implementation using the 10 CFR 50.59 Technical Draft Subtask 2C Possible Final Process Technical Context Guidelines Draft Guidelines Guidance for Subtask 2B: Assessment of Regulatory Guidance Letter Report Document Document Document for Initial AMTs in Cold Spray Subtask 2C: AMT Draft Guidelines Document Cold Spray Cold Spray AMTs future effort Task 3: Communications and Knowledge Technical Technical Draft Letter Report Context Guidelines Management PM-HIP Spray Document PM-HIP Document PM-HIP Subtask 3A: Internal Interactions Technical Draft Legend Subtask 3B: External Interactions Technical Context Guidelines Contractor-developed Subtask 3C: Knowledge Management Letter Report Document Document EBW Subtask 3D: Public Workshop EBW EBW NRC Staff-developed May 2-3, 2023, NDE of AMT Technical Exchange 4
Action Plan Reports Generic Technology specific Subject ADAMS Accession No. Technical Letter Report/ Draft Guidelines Documents Technical Assessment AMT Action Plan, Rev. 1 ML19333B980 LPBD ML20351A292 ML21074A040 Draft review guidelines ML21074A037 L-DED ML21301A077 ML22143A951 Implementation with 10 CFR 50.59 process ML21155A043 CS ML21263A105 ML22143A952 Assessment of regulatory guidance ML20233A693 EBW ML22143A927 future workas industry NDE gap analysis ML20349A012 PM-HIP ML22164A437 projects are completed Modeling gap analysis: microstructure ML20269A301 Modeling gap analysis: performance ML20350B550 NRC AMT Public Website Contains AMT-related documents and information May 2-3, 2023, NDE of AMT Technical Exchange 5
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)
- Effective and reliable NDE is critical to qualify and monitor the integrity of AMT components NRC Chair - visit to Advanced Manufacturing Pilot Facility at Georgia Tech
- 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
Current Regulatory Pathways Least likely
- 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 Most likely (z) alternatives to codes and standards 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
- 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
- 6. Definitions of the relevant inspection volume
- 7. Required level of component surface finish
- 8. Size limitations for inspection of large components May 2-3, 2023, NDE of AMT Technical Exchange 10
PNNL High Priority Gap Detail May 2-3, 2023, NDE of AMT Technical Exchange 11
NRC Activities - Moving Forward
- 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.
May 2-3, 2023, NDE of AMT Technical Exchange 12
NRC AMT Point-of-contact Office of Nuclear Regulatory Research Isaac Anchondo-Lopez Eric Focht Rob Tregoning NDE of AMT Overall AMT Agency Efforts Senior Level Technical Advisor isaac.anchondo-lopez@nrc.gov eric.focht@nrc.gov robert.tregoning@nrc.gov Office of Nuclear Regulatory Research Carolyn Fairbanks David Rudland John Wise Overall AMT Agency Efforts Senior Level Technical Advisor Senior Level Technical Advisor carolyn.fairbanks@nrc.gov david.rudland@nrc.gov john.wise@nrc.gov May 2-3, 2023, NDE of AMT Technical Exchange 13