ML18162A229
| ML18162A229 | |
| Person / Time | |
|---|---|
| Site: | Nuclear Energy Institute |
| Issue date: | 06/12/2018 |
| From: | Holtzman B Nuclear Energy Institute |
| To: | Office of Nuclear Reactor Regulation |
| Proffitt J | |
| References | |
| Download: ML18162A229 (7) | |
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© 2016 Electric Power Research Institute, Inc. All rights reserved.
Ben Holtzman NEI June 12, 2018 AN INDUSTRY PERSPECTIVE ATF PIRTs
PIRTs Role in the Licensing Process The nuclear industry sees value in conducting a PIRT to focus research and development where focus is needed
Industry, DOE, and NRC PIRT cooperation key to reducing duplication of effort Expert elicitation of PIRTs adds regulatory efficiency and predictability by identifying key areas of risk and uncertainty PIRTs have been used by the nuclear industry to assess phenomena prioritization supporting determination of model uncertainty for evaluation:
Code Scaling, Applicability and Uncertainty (CSAU)
© 2018 NEI. All rights reserved.
PIRTs Role in the Licensing Process Phenomena Identification & Ranking Table (PIRT) process to facilitate development:
Integral to the application of CSAU methodology Provide guidance via consensus process where regulatory guidance does not exist Leverage global resources to identify, prioritize, and target R&D to accelerate ATF innovation Facilitate R&D decisions by identifying and ranking key technical, regulatory, and operational issues
- Issue Resolution Report:
- Provide an approach to prioritize identified gaps as well as a plan to addresses them
- Foster engagement that addresses generic technical and regulatory issues PIRT Report Resolution Report
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Current Regulatory Infrastructure Current regulatory infrastructure is acceptable for qualification of some ATF concepts Coated Zircaloy Cladding Doped UO2 Fuel Pellets Ferritic Steel Cladding Significant work has already been completed for these ATF concepts and vendors are validating model adequacy No additional phenomena have been identified Fuel vendors will review ongoing testing for impact on phenomena or model uncertainties and update as appropriate Conducting a PIRT on these ATF concepts now would be an inefficient use of resources Nuclear Industry is using the current licensing criteria as basis for licensing these ATF concepts
© 2018 NEI. All rights reserved.
Nuclear Industrys Recommendation for PIRT use in ATF Development A PIRT would be beneficial to expedite the development and qualification of the ATF concepts using non-metallic cladding or non-UO2 fuel forms U3Si2 Fuel SiC Cladding Metallic Fuel Proposed PIRTs will identify gaps where additional research and testing may be necessary Fuel vendor design process and model uncertainties will be revised for these concepts NRCs cooperation with a PIRT would provide regulatory input with identifying and ranking key technical and regulatory issues This could provide guidance to material testing, integral experiments, code development, and facilitate technical regulatory changes The crediting of regulatory benefits is separate from qualification and will be done at a later date May or may not require a PIRT
© 2018 NEI. All rights reserved.
Summary PIRTs provide regulatory efficiency and predictability by identifying and ranking the issues that need to be addressed Current regulatory infrastructure is adequate to license some ATF concepts Coated Zircaloy Cladding Doped UO2 Fuel Pellets Ferritic Steel Cladding PIRTs will provide value for specific ATF concepts where current regulatory infrastructure is lacking U3Si2 Fuel SiC Cladding Metallic Fuel Industry stands ready to work with NRC to accomplish these fuel qualification PIRTs
© 2018 NEI. All rights reserved.
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