Following an OCDE round robin proposal, 16 participants from 9 countries (USA, Japan, Korea (6 participants), Sweden, Germany, Czech Republic, Spain, EC and France (3 participants)) have been involved in a round robin study called PROSIR, Probabilistic Structural Integrity of a PWR Reactor Pressure Vessel. The PROSIR project started already in 2003 and a final draft version of the main report of the project was is- sued in 2011.
Objectives
The primary objective has been to issue recommendations of best prac- tices when performing probabilistic analysis of a reactor pressure vessel containing flaws for obtaining the failure probability. Another objective has been to understand what the key parameters are in this type of approach.