This is very helpful Tom. Thanks for your excellent detail memory! So it sounds like the issue you're recalling may exist for various PWR plant designs. In situations where fuel failure has been relatively high, you can see dose rates on those in-yard tanks going above 0.25 or 2 mrem/hr. The RWST and the SIRW are analogous tanks holding large quantities of refueling water.
The specific tanks I was wondering about, though, are the holdup tanks used to store what is left after being processed through the plant's cleanup systems, especially demineralizers and filters. In Combustion plants, these are referred to simply as the Holdup Tanks. Together with the Reactor Makeup Water Tanks, they represent the main stored activity outside of the plant buildings. So the Holdup Tanks would have less radioactivity than any of the reactor water storage tanks. Does anyone have experience of elevated doses for these Holdup Tanks? Tim -- Tim Sent from my tablet. Please excuse my brevity.
