RIL 2024-03, Research Information Letter (Ril) 2024-03, Integrated Human Event Analysis System (Idheas) - Time and Time Uncertainty
| ML24088A147 | |
| Person / Time | |
|---|---|
| Issue date: | 04/16/2024 |
| From: | Christian Araguas NRC/RES/DRA/HFRB |
| To: | Mike Franovich NRC/NRR/DRA |
| Shared Package | |
| ML24088A144 | List: |
| References | |
| RIL 2024-03 | |
| Download: ML24088A147 (2) | |
Text
UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 MEMORANDUM TO:
Michael X. Franovich, Director Division of Risk Assessment Office of Nuclear Reactor Regulation FROM:
Christian Araguas, Director Division of Risk Analysis Office of Nuclear Regulatory Research
SUBJECT:
RESEARCH INFORMATION LETTER (RIL) 2024-03, INTEGRATED HUMAN EVENT ANALYSIS SYSTEM (IDHEAS) -
TIME AND TIME UNCERTAINTY Enclosed for your information and use is Research Information Letter (RIL) 2024-03, Integrated Human Event Analysis System (IDHEAS) - Time and Time Uncertainty. This report (RIL 2024-
- 03) provides guidance and data basis to assess operator performance time and uncertainty, which are two parameters in NRCs IDHEAS human reliability analysis method for event and condition assessments (IDHEAS-ECA, documented in NUREG-2256) to estimate human error probabilities (HEPs). Time uncertainty could be the dominant contributor to the HEPs of the time-critical human actions in probabilistic risk assessment models.
IDHEAS-ECA was created in response to the SRM-M140529s instruction that the staff should develop application specific guidance as part of its Integrated Decision-tree Human Event Analysis System (IDHEAS) project. The Office of the Advisory Committee on Reactor Safeguards (ACRS) recommended to the Commission (ADAMS Accession No. ML21076A421) that IDHEAS-ECA provides a specific derived application... Peer review is needed.
This report (RIL 2024-03) is a product of the Office of Nuclear Regulatory Research, Division of Risk Analysiss (RES/DRA) contract with Pacific Northwest National Laboratory (PNNL) to peer review and enhance IDHEAS-ECAs data basis. This report documents PNNLs analysis of the time data of the operator reliability experiments conducted by the Electric Power Research Institute (EPRI) in 1980s and quality checked the analysis results against the time data of the simulator experiments conducted by the Halden Reactor project.
The staff intends to move forward with posting this document on NRCs RIL public website 14 days after the date of this memo.
Please notify the responsible staff contact if you have any questions concerning the impending publication of this report.
CONTACT:
Y. James Chang, RES/DRA/HFRB 301-415-2378
Enclosure:
RIL 2024-03 April 16, 2024 Signed by Araguas, Christian on 04/16/24
ML24088A144; ML24088A147 OFFICE RES/DRA/HFRB NRR/DORL/LPMB NRR/DRA/APOB RES/DRA NAME YHsien MValentin-Olmeda AZoulis CAraguas DATE Mar 28, 2024 Mar 28, 2024 Apr 3, 2024 Apr 16, 2024