@rdamiani said:
You are getting your coolants confused. Primary coolant is not released (it cycles between the reactor and the heat exchanger), and secondary coolant (water for the steam cycle) dosn't come into contact with anything radioactive. I beleve that primary coolant never leaves the containment vessel, but I could be wrong on that.
You are right but one of the complaints of the environmentalists is that the secondary coolant also carries sufficient radiation to cause harm.