Pedagogic Materials of the Warsaw Workshop (September 2-5, 2019)

Keynotes, specialised lectures and lectures were proposed within the framework of this worskhop as well as a short practical session on the basic Bayesian network theory.

Keynotes & Specialised Lectures

Safety vs Security - Behrooz BAZARGAN-SABET (BRGM) Download
Risk Assessment Using Bayesian Approach - Abhinav GUPTA (CNEFS) Download
Nuclear Power Plant Accidents - Alexander DUCHAC (IAEA) Download
PSA: Main Elements and Role - Ivan VRBANIC (APOSS) Download
Human Factors - Jessica JOHNSON (FORATOM) Download

Lectures

The program of the workshop was structured around the Work Packages (WPs) activities of the NARSIS Project with two lectures planned per WP. Beforehand each WP had selected relevant topics for presentation and prepared a collective lecture.

WP1: External Hazards Characterization

Introduction to external hazard events - Background, parameters, and interactions Download
Modelling external hazards:
- Extreme value modelling Download
- Example of application of the French directive for Basic Nuclear Installations (BNI) Download

WP2: Fragility assessment of main NPPs critical elements

Identification of critical elements within NPPs (screening and ranking methods) Download
Methods for the derivation of fragility functions Download

WP3: Integration and safety analysis

Latent weaknesses and root causes in the feedback of operating experience programmes Download
Uncertainties and risk integration Download

WP4: Applying and comparing various safety assessment approaches on a virtual reactor

Metamodels for reducing computational costs in probabilistic safety analyses Download
Severe accident assessment with uncertainty and sensitivity analysis Download

WP5: Supporting Tool for Severe Accident Management

Severe accident phenomenology and management Download
Principles of severe accident risk analysis Download

Practical Session

This practical session covered some basic Bayesian network theory, provided an example problem, and partly solved it in the software program “Netica”. The exercise and solution files are provided below.

Netica Software

The Netica software can be downloaded and installed from the below link. Please choose the correct download based on your OS (Windows or Mac OSX) and follow the corresponding set of instructions. You must be able to open the software and operate in the “Limited Mode” (free version).

https://www.norsys.com/download.html