Tritium is a radioactive isotope of hydrogen and a by-product of nuclear reactors, but the University is one of the few organisations in the world researching its environmental effects.

It has previously worked with several partners on the TITANS project to assess how tritium particles are released into the atmosphere and their behaviour once there.

It has also published research showing that increased sea temperatures, coupled with the presence of tritium, could dramatically enhance and accelerate radiation-induced DNA damage in marine invertebrates.

As part of the new research, scientists in Plymouth will further their studies into the impact of tritium particles on marine mussels and – as a consequence – their potential to enter the human food chain.

Other partners will also then explore whether tritium can be absorbed through the skin and the impact it could potentially have on lung cells if inhaled.

The project will also look to improve modelling tools to assess tritium migration in nuclear fission and fusion reactors, how tritium is released during the dismantling of a contaminated setup, and develop a means of processing tritiated water.

Ultimately, the partners aim to provide a blend of robust science that can be used by the nuclear industry, safety regulators, radiation protection authorities and decision makers.