The Margaritze dam belongs to the Kaprun worKs group and every 10 years the above-water structures and below-water parts of the
plant have to be subjected.
Inspection work is carried out in the winter due to the vastly superior underwater visibility at this time of
year. The low temperature of the water, being closed in by an ice ceiling and the general altitude of the plant make this a challenging work – even for experienced professional divers. A hole was cut into the ice, which was roughly 50cm thick, to enable diving work to begin. The main focus of the inspection was on the integrity of the concrete, the functioning of the bottom outlet and the debris intake grates.