Objective
ACCORDING THE TASK 3 "TESTING AND EVALUATION OF CONDITIONED WASTE AND TECHNICAL BARRIERS" QUALITY ASSURANCE IS A MAIN SCOPE OF RESEARCH CONCERNED WITH THE HANDLING OF RADIOACTIVE WASTE. IT IS PROVIDED TO CHARACTERIZE MEDIUM AND HIGH ACTIVE WASTE BY STANDARD TEST METHODS WHICH ARE TO BE DEVELOPED AND EXPERIENCED IN THIS CONTRACT. QUALITY EVALUATION OF RADIOACTIVE WASTE PACKAGES IS PREFERENTIALLY DONE BY NONDESTRUCTIVE TESTING METHODS.
OUR PROPOSAL IS MAINLY CONCERNED WITH THE ELABORATION OF SPECIFIC TESTING METHODS FOR READY CONDITIONED WASTE PACKAGES AS WELL AS THE MATRIX MATERIALS THEMSELVES (E.G. BITUMEN, CONCRETE, CERAMICS AND GLASS). CT WITH X-RAY IS ONE OF THE BEST METHODS FOR THE COMPREHENSIVE NONDESTRUCTIVE CHARACTERIZATION OF THE PHYSICAL AND TECHNICAL PROPERTIES OF THE ABOVE DESCRIBED TEST OBJECTS. THE METHOD IS ESPECIALLY SUITABLE FOR THE NONDESTRUCTIVE EVALUATION OF THE ABSOLUTE DENSITY VALUE, OF THE DENSITY DISTRIBUTION, OF THE GAMMA ACTIVITY DISTRIBUTION, OF THE LOCALIZATION OF VOIDS, CRACKS AND INCLUSIONS, OF THE VISUALIZATION OF SWELLING, SHRINKING AND PHASE PRECIPITATIONS, AS WELL AS THE DETECTION OF LIQUID PHASES IN BENTONITE AND CEMENTED WASTE. THE OBJECTIVES OF THE NEW CONTRACT ARE AN EXTENSION OF THE DIMENSION OF THE WASTE PACKAGES TO BE INVESTIGATED AS WELL AS THE VARIETY OF THE PHYSICAL PROPERTIES TO BE INVESTIGATED.
The main task of this work was the elaboration of specific nondestructive testing techniques for conditioned and sealed radioactive waste packages as well as for the matrix materials themselves (eg bitumen, concrete, ceramics and glass). Computerised tomography (CT) with X-rays turned out to be one of the best techniques for the comprehensive nondestructive characterisation of the physical and technical properties of the waste packages. The technique is especially suitable for the nondestructive evaluation of the absolute density value, of the density distribution, of the gamma activity distribution, of the localisation of voids, cracks and inclusions, and of the visualisation of swelling, shrinkage and phase precipitations, as well as for the detection of liquid phases in bentonite and cemented waste.
1. CHOICE AND ACQUISITION OF A RADIOGRAPHIC LINEAR ACCELERATOR, INSTALLATION AND ACCEPTANCE TEST.
2. DEVELOPMENT, CONSTRUCTION AND TESTING OF A HECT DETECTOR.
3. INVESTIGATION OF THE CRACK FORMATION OF NON-RADIOACTIVE HAW GLASS SIMULATE.
4. NON-DESTRUCTIVE EVALUATION OF THE INTERNAL SURFACE OF A GLASS CYLINDER.
5. INVESTIGATION OF CEMENTED CLADDING WASTE.
6. INVESTIGATION OF SWELLING, SHRINKING AND SEGREGATION IN LAW AND MAW CONTAINERS.
7. NON-DESTRUCTIVE EVALUATION OF THE COMPRESSIVE STRENGTH OF CEMENTED WASTE.
8. EVALUATION OF THE ACTIVITY DISTRIBUTION IN MAW-CONTAINERS BY COMBINATION OF ECT AND TCT-MEASUREMENTS
9. COMBINATION OF SIMULATED HAW-ECT-MEASUREMENTS WITH TCT-MEASUREMENTS.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
- engineering and technology other engineering and technologies nuclear engineering nuclear waste management
- natural sciences physical sciences theoretical physics particle physics particle accelerator
- engineering and technology materials engineering amorphous solids
- engineering and technology materials engineering ceramics
- social sciences law
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Coordinator
12205 BERLIN
Germany
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