Given zeo fuel mass 4920 trip fuel

waste is also generated while decommissioning and dismantling

nuclear reactors and other nuclear facilities.

The most important reason the fuel has to be replaced every

few years is the fission products.

nuclear fusion:a nuclear reaction in which atomic nuclei of low atomic number

fuse to form a heavier nucleus with the release of energy.

E=mc2: the equation says that energy and mass (matter) are interchangeable;

 they are different forms of the same thing. Under the right conditions, energy can become mass,

 and vice versa.

E = mc² is the key to understanding why and how energy is released in nuclear reactions.