Lead

摘要

UK supplier Nuclear Engineering Services has finished building two mobile shielded cells (caves) to retrieve stored Sellafield fuel debris after a marathon 18-year build.rnThe intermediate-level waste comprising Magnox swarf (external cooling fins) and other materials is stored under water in 22 vertical silos. Over time, Magnox waste stored in water tends to corrode into sludge.rnThe caves, operating on a rail system, weigh about 400t each and contain more than 13,500 parts. They remove waste with a hydraulic grab and tooling system through a tunnel mounted on top of the waste silos.