A plant worker accidentally breathes some stored gaseous tri

A plant worker accidentally breathes some stored gaseous tritium, a beta emitter with maximum particle energy 0.0186 MeV. The energy absorbed by the lungs, of total weight 1 kg, is 4 x10^-3 J. How many millirem dose equivalent was received? How many millisieverts? (the correct answer is 400 mrem, 4 mSv)

Solution

a)

Does equivalent would be

D=(4*10^-3)/1 =4*10^-3 J/Kg

1 J/Kg =1 Gy

1 Gy =10⁵ mrem

D=(4*10^-3)*10⁵ =400 mrem

b)

1 mrem =0.01 mSV

So

D =400*0.01 =4 mSV