Abstract
This paper presents efforts to overcome challenges with empirical probability of detection (POD) estimations in the nuclear power industry through the utilization of a novel virtual flaw method. A virtual round robin (VRR) study was conducted under the Program for Investigation Of NDE by International Collaboration (PIONIC), organized by the United States Nuclear Regulatory Commission (NRC) utilizing data generated by the virtual flaw method. Analysis of results from the VRR was performed by teams from Pacific Northwest National Laboratory (PNNL), Electric Power Research Institute (EPRI), and Aalto University. Empirically derived POD estimations are presented, and challenges associated with obtaining these estimations are discussed. The virtual flaw method is introduced and some details of its implementation for the VRR activity are described. Results from POD analysis of the VRR data by PNNL, EPRI, and Aalto University are presented and a discussion regarding differences in analysis results is provided. Finally, potential future efforts to improve the application of the virtual flaw method and its estimation of POD are discussed.
| Original language | English |
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| Title of host publication | Proceedings of 2021 48th Annual Review of Progress in Quantitative Nondestructive Evaluation, QNDE 2021 |
| Publisher | American Society of Mechanical Engineers (ASME) |
| ISBN (Electronic) | 9780791885529 |
| State | Published - 2021 |
| Externally published | Yes |
| Event | 2021 48th Annual Review of Progress in Quantitative Nondestructive Evaluation, QNDE 2021 - Virtual, Online Duration: Jul 28 2021 → Jul 30 2021 |
Publication series
| Name | Proceedings of 2021 48th Annual Review of Progress in Quantitative Nondestructive Evaluation, QNDE 2021 |
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Conference
| Conference | 2021 48th Annual Review of Progress in Quantitative Nondestructive Evaluation, QNDE 2021 |
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| City | Virtual, Online |
| Period | 07/28/21 → 07/30/21 |
Funding
This section presents the motivation for the current work and begins with a brief introduction to primary water stress corrosion cracking (PWSCC) in DMWs. A description of POD representation is also provided followed by a short summary of results from two round robin studies supported by the U.S. Nuclear Regulatory Commission (NRC). Limitations from previous empirical studies are described and The Program for Investigation Of NDE by International Collaboration (PIONIC) is introduced. This work was sponsored at Pacific Northwest National Laboratory (PNNL) by the U.S. Nuclear Regulatory Commission under work agreement NRC-HQ-60-17-D-0010 with direction from Mr. Bruce Lin. PNNL is a multi-program national laboratory operated by Battelle Memorial Institute for the U.S. DOE under DE-AC06-76RLO 1830.
Keywords
- Dissimilar metal welds
- Nondestructive examination
- Nuclear power
- Probability of detection