Monitoring systems of stress and strain state of the containment of units 5 and 6, as a guarantee for safe and clean operation of nuclear facilities on the Kozloduy NPP site

Four independent methods are applied for the ; control of the strain in the bundles and containment monitoring. 1. Direct - lift off test; 2. Automatic control system; 3.system for automated control of strain forces in bundles; 4. By geodesic control. The implemented activities and reports on the Project show that there are no defects in the containment construction and it is prepared to function; its protective barrier and to withstand design and beyond design events without losing its supporting ability