Durability of a reinforced concrete designed for the construction of an intermediate-level radioactive waste disposal facility

Abstract

The National Atomic Energy Commission of the Argentine Republic is developing a nuclear waste disposal management programme that contemplates the design and construction of a facility for the final disposal of intermediate-level radioactive wastes. The repository is based on the use of multiple, independent and redundant barriers. The major components are made in reinforced concrete so, the durability of these structures is an important aspect for the facility integrity. This work presents an investigation performed on a reinforced concrete specifically designed for this purpose, to predict the service life of the intermediate level radioactive waste disposal facility from data obtained with several techniques. Results obtained with corrosion sensors embedded in a concrete prototype are also included. The information obtained will be used for the final design of the facility in order to guarantee a service life more or equal than the foreseen durability for this type of facilities.

The Dynamics of the Electric Field Distribution in the Surface of Insulating Film Irradiated by Air Ions

“…Consequently, measurements of humidity can provide useful information when investigating charge carrier mobility [8,9]. Similarly, if charge carrier mobility depends on radiation intensity, it could be measured, too [9,10]. Conductivity of air and tangential and normal electric fields created on the insulator surface are determined in this work.…”

Potenciales aplicaciones tecnológicas de heterociclos nitrogenados y productos naturales: síntesis, inhibición de la corrosión de metales y generación de aniones radicales estables

“…Los residuos nucleares se inmovilizan en estructuras de hormigón armado y son depositados en contenedores de aceros de 200 l. Los científicos e ingenieros especializados en corrosión están lidiando con el problema de predecir la resistencia a la corrosión de los contenedores durante largos periodos de tiempo, a elevadas temperaturas y en presencia de iones cloruro. [16], [17].…”

“…También se ha informado el efecto inhibidor de los exudados gomosos de Acacia variedad seyal sobre la corrosión del acero al carbono en agua potable [16], [179], y de Raphiahookeri y Pachlobusedulis para la inhibición de la corrosión de acero al carbono y de aluminio en medio ácido [180], [181].…”

“…Electrólisis a potencial controlado para distintos compuestos en solución de DMF y empleado como electrolito soporte NaClO4 0,15 M. Las EPC y los VsCs se realizaron dentro de una caja con guantes en atmósfera de nitrógeno seco libre de oxígeno, a menos que se indique otra condición. * En presencia 0,16 M de H2O. VI.2.3.2.…”