While fusion is a nuclear process, the products of the fusion reaction (helium and a neutron) are not radioactive, and with proper design a fusion power plant would be passively safe, and would produce no long-lived radioactive waste.
In the United States and formerly Canada a ton is defined to be 2,000 pounds (907 kg). Where confusion is possible, the 2240 lb ton is called  long ton  and the 2000 lb ton  short ton ; the tonne is distinguished by its spelling, but usually pronounced the same as ton, hence the US term metric ton.here confusion is possible, the 2240 lb ton is called  long ton  and the 2000 lb ton  short ton ; the tonne is distinguished by its spelling, but usually pronounced the same as ton, hence the US term metric ton.
The short (net) ton equals to 2000 pounds and used in North America, the long ton (also known as weight or gross ton) is used in imperial system (UK and some of the other English speaking countries) and defined as 2240 pounds or 1016 kilograms and finally the metric ton (also known as tonne) equals to 1000 kilograms and used in metric system.