Ontario Power Generation wants to permanently store low- and
intermediate-level waste from nuclear plants in a rock chamber 2,230 feet underground.
The repository will be a near-surface trench-type facility featuring multi-barrier protection for the storage of low- and
intermediate-level waste (LLW/ILW) in reinforced concrete packages.
Low and
intermediate-level waste and materials are held in Wales at Wylfa, Trawsfynydd and Cardiff.
Low and
intermediate-level waste and materials are held in Wales at Wylfa - where there are plans to build a new nuclear power station - and Trawsfynydd and Cardiff.
"Our
intermediate-level waste doesn't generate heat, but we have a high volume of it--about 500,000[m.sup.3].
In the EU, more than 85% of the generated volume of radioactive waste is constituted by short-lived low and
intermediate-level waste (LILW) and about 5% by long-lived LILW.
Fortum also started the expansion of the low- and
intermediate-level waste repository 110 m deep in the bedrock in late summer 2010.
The firm also plan to seek a cheaper alternative to a proposed pounds 10 0mi l l ion treatment plant and store for mos t of t he comple x 's
intermediate-level waste.
Specific topics examined include oxide film aging on alloy 22 in halide containing solutions, enhancement of zirconolite dissolution due to water radiolysis, geopolymers as candidates for immobilization of low- and
intermediate-level waste, dissolution testing of a metallic waste form in chlorine brine, and characterization and durability testing of fluidized-bed stream-reformed mineral waste.
In the UK radioactive waste is classified into four categories--high-level waste,
intermediate-level waste, low-level waste, and very low-level waste: