A provision of passive fire protection of electrical cable trays for nuclear and conventional power plants

摘要

The system comprises a set of rigid panels of Al2O3 20-50, SiO2 35-55%, remainder CaO, MgO, Fe2O3 and other metal oxides and organic matter in ceramic fibre form. To increase efficiency, the panels are layered, the outermost layer having a density of 200 kg/m3. - Stainless steel connecting strips, and spacers forming an internal air chamber , supplement metal gratings in the metal, giving ventilation and acting as traps which close once the external temp. reaches a set value.