ADS-IDAC: Accident Dynamics Simulator with the IDAC Crew Cognitive Model
Year: 2026
Type: software
Abstract: ADS-IDAC, the Accident Dynamics Simulator with the Information, Decision, and Action in a Crew context cognitive model, is a simulation engine for dynamic probabilistic risk assessment of nuclear power plants. It couples a thermal-hydraulic plant model with models of hardware reliability and of the operating crew's cognition, and generates a discrete dynamic event tree in which every sequence is a complete, time-resolved simulation of the plant and its crew and every branch carries a probability. The engine runs in serial or in parallel under MPI, with checkpoint and resume, a solver interface that lets another physics code be attached over a REST API, exact Bayesian network inference for human failure events, and a static validator for the input files.This archive contains the complete documentation as a 524-page manual, a three-loop pressurized water reactor model with its crew knowledge base, emergency procedures and a designed steam generator tube rupture event tree, and a standalone mock thermal-hydraulic solver that answers the engine's REST contract. It contains no engine source and no engine executable. Every build of the engine links RELAP5/MOD3.3, which is licensed separately through the U.S. Nuclear Regulatory Commission and Information Systems Laboratories and is not ours to redistribute. Running the engine requires your own RELAP5 and access to the source, which is held in a private repository.
Authors: Tezbasaran, Alp, Diaconeasa, Mihai
Institution: North Carolina State University
Language: English
Topic: Risk and Safety Analysis
Subfield: Safety, Risk, Reliability and Quality
Field: Engineering
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W7213620092