Radon mitigation system. Safety Siren Pro 3.

I recently purchased a Safety Siren radon detector to monitor levels in my property.
I thought that I had radon levels under control as I keep all my radium well sealed and use a HEPA activated carbon air filter.
I set it up in my store room. After 48 hours ( thats how long it takes the Pro 3 to calculate an initial reading) I was quite surprised to see a reading of 18.4 pCi/l.
This is a higher level than I was prepared to live with. So I made a simple ventilation system. Works great as can be seen with the reading now under 1 pCi/l.
I am very impressed with the Pro 3. I thought a high gamma background would give a false high reading. This is not the case. It uses an ion chamber that looks to be made from pvc and sealed. I have no idea how it can detect alpha.

Category:

Education

Tags:

• radon
• radioactive
• safety siren
• radium

[milidude]

hello, nice mitigation system. where did you buy the radon detector? online or locally/ thanks.

[ALARAiswise]

@milidude  ebay

[10mintwo]

cool! but that thing has got to be wasting MASSIVE amounts of energy. Both the energy to run the fan itself and the huge amount of heated air being pushed outside. As long as you maintain a very slight pressure differential between the inside and outside of the box, that should be all you need to keep all the Rn out. You could probably cut the speed of that fan by at least half and still be safe. You could use a small length of clear tubing bent into a U shape filled partly with water to do it.

[ALARAiswise]

@10mintwo Yeah. I reduced the fan speed and the radon reading has not changed so thanks for that.

[KarbineKyle]

Very Nice Radon (Rn) mitigation system! Rn will seep through just about anything. Also, with Ra-226, there's going to be Rn-222, which has a half-life of 3.8 days, the longest-lived Rn isotope. It doesn't seem like much time, but it's constant with Ra-226 decaying to Rn-222. There's many isotopes, like Rn-220, which has a half-life of 55 seconds, but these all decay into solids, like Polonium (Po), or Lead (Pb), which you already know I'm sure. What is the highest pCi/l dose you've ever gotten?

[Huffdev]

how did you set that up??