ML20267A199
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| ML20267A199 | |
| Person / Time | |
|---|---|
| Issue date: | 09/23/2020 |
| From: | Michelle Kichline Office of Nuclear Reactor Regulation |
| To: | |
| Sean Peters, Carmen Franklin | |
| Shared Package | |
| ML20267A193 | List: |
| References | |
| Download: ML20267A199 (5) | |
Text
User Feedback on IDHEAS-ECA Michelle Kichline Senior Reliability and Risk Analyst Office of Nuclear Reactor Regulation
IDHEAS-ECA Rollout
- Informal training given at last 2 Senior Reactor Analyst (SRA) Counterpart meetings.
- IDHEAS-ECA is being piloted for use for quantifying human error probabilities (HEPs) for detailed risk evaluations (DREs) conducted as part of the Significance Determination Process (SDP).
- IDHEAS-ECA is also being piloted for use in Accident Sequence Precursor (ASP) program risk evaluations.
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User Feedback
- Training attendees commented:
- User interface was easy to understand
- Appreciated that human failure events (HFEs) could be evaluated at the same level as in SPAR-H
- Dependency and recovery models are needed
- Users commented:
- User interface was easy to use
- Results were reasonable
- Choices were more detailed than SPAR-H - expect the result is more accurate
- Timing module was confusing 3
Workshop Attendee Feedback
- User interface was easy to use and provided reasonable results
- Ability to document results in the tool was useful but should be expanded to make it easier to use
- Calculating the impact of time on HEP was confusing
- Pop-ups providing information about PIFs were useful and should be expanded to provide more information
- Requested more information on how to break down an HFE into its critical tasks, especially since it may be different than other methods 4
Summary
- All users found the user interface easy to use and understand.
- Both industry and NRC users found that the method/tool provides reasonable results.
- IDHEAS-ECA has more detailed PIF options than SPAR-H, especially for actions outside the control room, and is expected to provide more accurate HEPs than SPAR-H.
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