The only permanent Nuclear waste facility I know of is Finlands Onkalo, meaning "cave" in Finnish, the facility is carved 430 meters (1,411 feet) below the surface in 1.9-billion-year-old stable bedrock near the Olkiluoto nuclear power plant. It securely stores spent nuclear fuel using a unique multi-barrier system.
It took over 20 years to build & can store 6500 tonnes of spent uranium.
https://en.wikipedia.org/wiki/Onkalo_spent_nuclear_fuel_repository
About 400,000 tones of high level waste exists globally with about 12,000 tonnes added each year.
Meanwhile there are scores of decommissioned Nuclear submarines in storage awaiting the waste from their reactors to be removed and stored. The UK has 23, The US & Russia have not disclosed numbers or where the waste is stored.
Is there a plan to dispose of the waste from the Aukus nuclear subs?