Graphite waste interim storage silo
"Graphite waste" from operating the earliest French natural uranium graphite gas (Uranium Naturel Graphite Gaz - UNGG) reactors is stored in two silos. Silo 130, shown in the photo, is an underground bunker consisting of two 3,000 m3 ventilated cells, only one of which contains waste (approximately 1300 m3, introduced between 1973 and 1990). Silo 115 is a parallelepipedic silo consisting of three ventilated 400 m3 plain steel chambers containing older waste (produced between 1966 and 1974).