Besides high-level waste, the nuclear power plants also produce low- and intermediate-level waste. This waste is prepared for deep disposal either at the power plant sites or at ZWILAG in Würenlingen. The plasma furnace at ZWILAG is used to melt various types of low-level waste, which then solidify to a slag-type mass.
Raw waste from medicine, industry and research is processed into a form suitable for disposal at the Paul Scherrer Institute or at ZWILAG and is then stored in the Federal Government’s interim storage facility (BZL) in Würenlingen.
Reprocessing of spent fuel elements also produces low- and intermediate-level waste (e.g. structural components of the fuel elements).