PRA Model Generator

This repository includes Probabilistic Risk Assessment (PRA) model generation source code, schema for different model format, and additional scripts to automate model generation.

1. OpenPSA Model Exchange Format

The OpenPSA Model Exchange Format (MEF) represents about a decade of effort to develop a format independent of any specific quantification engine. The goal was to create a standard that researchers, corporations, and regulators could use collaboratively in an open environment.

2. SAPHSOLVE Model Format

SAPHSOLVE is the quantification engine of legacy PRA tool SAPHIRE. SAPHSOLVE input and output format are detailed in a report published by Idaho National Laboratory.

3. FTREX Model Format

4. Usage of PRA Model Generator

4.1. Default Configuration of Generated PRA Model

• default fault tree arguments:

#	Arguments	Value
1	Fault tree name	Autogenerated
2	The root gate name	root
3	The seed of the random number generator	123
4	The number of basic events	100
5	The number of house events	0
6	The number of CCF groups	0
7	The average number of gate arguments	3.0
8	The weights of gate types [AND, OR, K/N, NOT, XOR]	[1.0, 1.0, 0.0, 0.0, 0.0]
9	Percentage of common basic events per gate	0.3
10	Percentage of common gates per gate	0.1
11	The avg. number of parents for common basic events	2
12	The avg. number of parents for common gates	2
13	Maximum probability for basic events	0.1
14	Minimum probability for basic events	0.01

4.2. Modifying Configuration of Default PRA Model

5. References