ASSESSMENT OF THE EFFECT OF A BORIC ACID SOLUTION AND TEMPERATURE ON A HEAT-INSULATION MATERIAL MADE OF BASALTIC FIBERS

摘要

The equipment and pipelines in operating nuclear power plants are, at the present time, insulated with heat-insulating materials (fiberglass, mineral wool, basaltic fiber). During operation, these heat-insulation materials absorb moisture from the surrounding air. In leaks, the coolant saturates the heat-insulating materials with moisture. The main technical characteristics of heat-insulating fiber materials and the quality of the fibers under these conditions have not been evaluated. This paper presents the results of investigations of prolonged one-time action of a medium (solution of boric acid) and temperature on a heat-insulating material made of basaltic fiber.