Stalin Posted February 25, 2020 Report Share Posted February 25, 2020 In radon simulation, how can I estimate the Po-218, Pb-214 and Bi-214 radionuclides by Bq per M3? Quote Link to comment Share on other sites More sharing options...
Florian Michelin Posted February 27, 2020 Report Share Posted February 27, 2020 Hi, The Ventsim radon simulation follows the radon calculation from Mc Pherson which doesnt consider the type amount of progeny. However it should be possible, calculating the decay from Radon to Po218, etc based on their respective half life. Mc Pherson's book indicate it would be possible but doesnt state the exact equations. What would be the use for it? Quote Link to comment Share on other sites More sharing options...
Stalin Posted February 27, 2020 Author Report Share Posted February 27, 2020 I believe it would be interesting to discern the contributions of radionuclides to WL. Since WL is the sum WL = (WL) RaA + (WL) RaB + (WL) RaC. Those are the radon progeny. The definition of the Working Level (WL) is the potential alpha energy contained in the radon progeny. So, you need to know the progeny concentrations to be able to calculate WL. In radiological / radioprotection terms it is also interesting to know the distribution of radionuclides (solid elements) inside the underground mine. For understanding, I suggest you read the paper (Engineers' guide to the elementary behavior of radon daughters by Robley D. Evans). I can send the article to your email, if you want it. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.