Joint Research Project: Evidence of Design Basis Accidents Mitigation solely with Passive Safety Systems (EASY)
Sub-Project:
Instrumentation of the Test Facility, Development and Validation of Nuclear Evaluation Tools
Motivation:
The projects is intended to prove the ability of analytical models to reliably simulate the behavior of passive systems during postulated accidents in a reactor circuit and to demonstrate the compliance with the demanded criteria in the nuclear regulations. In addition, a simulation program system shall be developed, which can also be used for the safety-related assessment of new builds with passive safety systems especially in Europe. Furthermore, the developed system may support the government by perceiving German security interests as well as enforcing the highest nuclear safety standards in the EU.
Objectives:
The aim of the joint research project is the enhancement and validation of a coupled program system for simulating the heat removal from a nuclear reactor by using passive safety systems.
Methods and results:
Based on the concept of the KERENA boiling water reactor, in the joint research project models for the simulation of the heat removal by passive safety systems are developed. For this purpose the coupled program system ATHLET-COCOSYS is used. The developed models will be validated using integral experiments at the INKA test facility of AREVA in Karlstein. At the test facility a special instrumentation is installed, consisting of 12 high-pressure thermo-needle probes and a wire-mesh sensor, which deliver data with high resolution in time for the two-phase flow in the most important components of the passive heat removal chain.
Publications:
N. Neukam, C. Schuster, A. Hurtado, U. Hampel
Model Development and Simulation of Passive Safety Systems in System Code ATHLET - The Passive Pressure Pulse Transmitter as Part of the Passive Safety Systems of a Nuclear Reactor
Conference Paper: Annual Meeting on Nuclear Technology, Hamburg, May 2016