Session: 02-03 Modeling, Work Management and Data Analysis Software

Paper Number: 110350

110350 - Wastream for Supporting Nuclear Installations’ Dismantling 

WASTREAM for supporting nuclear installations’ dismantling 

This paper presents the WASTREAM software suite developed by Tractebel to support an integrated decommissioning project. 

In the frame of dismantling a nuclear installation, being able to correctly estimate the waste quantities produced is crucial. Therefore, it is necessary to gather a description of the dismantling activities and an estimation of the waste they produce, which in turn enables to evaluate the storage capacities to be installed. Moreover, logistics calculations performed in order to design the dismantling facilities (generally incorporating treatment units and buffer storage spaces) require also a precise evaluation of the waste masses as well as their radiological content during the dismantling activities.  

Those waste estimations are based on several sources of information: the installation physical inventory, the radiological characterization of the components, the dismantling schedule and the description of material waste streams (succession of the treatment and conditioning the materials undergo from their dismantling to their interim storage/final disposal or clearance). These evaluations require to be updated on a regular basis. 

WASTREAM software suite was developed for this purpose. The software allows on one hand defining waste stream models, on the other hand establishing the link between the installation physical inventory, the waste streams and the dismantling phase. It then provides means for calculating, analyzing and visualizing the quantities of waste produced. It is designed to be fast running and compatible with a wide variety of physical inventory databases and dismantling schedule.  

In particular, WASTREAM has been connected to the platform developed in the framework of the PLEIADES project (European Commission funded project for connecting digital tools for smarter nuclear decommissioning). 3D models and databases of the PLEIADES case studies are used to showcase WASTREAM capabilities for supporting nuclear installations’ dismantling. 

Presenting Author: Robin Thomas Tractebel ENGIE

Presenting Author Biography: Robin THOMAS is Digital Decommissioning Engineer at Tractebel ENGIE