Critical radius vpm

[narcotizzato]

Hi everyone,
In the vpm, Does the initial critical radius change based on the half-life of the compartment? Compared to nitrogen, the initial critical radius of helium is smaller because helium has a lower solubility than nitrogen?

 

[elmo]

VPM is becoming more of a curiosity than a recommended planning tool. But to answer your question, there are different critical radii for nitrogen and helium, and the radii are the same across all compartments. They do vary according to conservatism level.