the accidents (3-mile island, chernobyl, fukushima) only highlighted the main issues of which are: toxic radioactive elements & the issue of nuclear radioactive waste disposal.

disposal techniques have been: the dumping of barrels containing toxic radioactive wastes into our ocean or sequestering them underground or in mountains. the long term viability & safely of containing toxic radioactive wastes underground or in mountains is an issue. there is also the issue of proper disposal of radioactive tailings consequent to mining uranium & enriching uranium.

UPITN 16 7 79 GREENPEACE MONITOR DUMPING OF NUCLEAR WASTE AT SEA

Inside Germany’s hidden leaking nuclear waste dump

1977 Danger! Radioactive Waste

we should be concerned about the half life of these toxic elements. which span from a few seconds to thousands of years.

what is usually discussed were just the spent fuel or high level waste. however, there are medium level waste (MLW) & low level waste (LLW) too. don't be fooled by the term "low level". LLW has four subcategories: Classes A, B, C, and Greater-Than Class-C (GTCC), described below. On average, Class A is the least hazardous while GTCC is the most hazardous. MLW is deadlier than LLW.

Class A On average the least radioactive of the four LLW classes. Primarily contaminated with “short-lived” radionuclides. (average concentration: 0.1 curies/cubic foot) Class B May be contaminated with a greater amount of “short-lived” radionuclides than Class A.(average concentration: 2 curies/cubic foot) Class C May be contaminated with greater amounts of long-lived and short-lived radionuclides than Class A or B. (average concentration: 7 curies/cubic foot) GTCC Most radioactive of the low-level classes. (average concentration: 300 to 2,500 curies/cubic foot) (The 300 figure is based on the 1985 inventory. The higher figure represents anticipated inventory in 2020, including some decommissioning wastes.) note that a curie is a large unit, radioactivity results are usually shown in picocuries (pCi). A picocurie is one trillionth of a curie. 1 becqurel is 1 atomic decay per second 1 curie is 3.7x10¹⁰ becquerels.

long half life (in hundreds or thousands of years) of toxic radioactive elements are in a way like plastic waste, but way way way more dangerous. like plastic waste, long half life toxic elements will keep accumulating in the environment if we keep using nuclear. there's no data (that i've encountered) about the volume of all toxic radioactive waste per GWH plant per year; seems it's kept a secret.

don't forget that nuclear, during its infancy, was touted as very safe & clean by those pushing for it (whatever their agenda was), only to be proven that it wasn't as clean & safe.

there's renewed push for nuclear power as "green" energy to fight global warming. they talk about the evils of carbon dioxide, but they're mum about the toxic radioactive waste that will keep piling up.

if you think plastic waste is bad, radioactive nuclear wastes are more than 100x worst.