[ RadSafe ] Radon progeny in CNG vehicles gas tanks

Stroud - CDPHE, Ed ed.stroud at state.co.us
Thu Apr 17 07:18:58 CDT 2014

We haven't seen any contamination in CNG cars, but we did have a case
where a tanker truck carrying propane set off an alarm.

Ed Stroud, Compliance Lead
Radioactive Materials Unit
Colorado Department of Public Health and Environment

On Wed, Apr 16, 2014 at 3:58 PM, John Hultquist <jhultquist at utah.gov> wrote:
> I could use help in exploring a question with fellow radsafers in knowing
> if bi-fuel or CNG vehicles are triggering radiation alarms because of radon
> and its decay products as a natural contaminant of the natural gas.
> I understand that hydrocarbons from the Dakotas and Pennsylvania are being
> produced with radon as a natural contaminant.
> I am going to speculate that as vehicles with CNG tanks age, the lead-210
> from any natural gas with radon is going to build up (Pb-210 half-life is
> 22.26 years)in the inside wall of the tank.   Maybe the radiations from
> Pb-210 or Bi-210 will cause radiation detectors across the country to
> alarm.
> Any insight to this issue would be appreciated.
> John Hultquist,
> Utah Division of Radiation Control
> _______________________________________________
> You are currently subscribed to the RadSafe mailing list
> Before posting a message to RadSafe be sure to have read and understood the RadSafe rules. These can be found at: http://health.phys.iit.edu/radsaferules.html
> For information on how to subscribe or unsubscribe and other settings visit: http://health.phys.iit.edu

More information about the RadSafe mailing list