Rank: Guest 
|
Posted By paul s wright
hello to everyone
does anyone have any information on exposure limit values on RADON gas, and recommendations for gas detectors which pick up radon gas. i have a job be looked at with a confined space entry into some clean water tanks changing some pipework. tanks have been emptied, survey is being carried out to identify levels of radon, if present.
thanks...
|
|
|
|
|
|
Rank: Guest
|
Posted By Descarte
Radon gas concentrations are measured in units calledbecquerels per cubic metre (Bq m-3). Where theworkplace is occupied for a normal working day andextended measurements show radon levels below 400 Bq m-3, no further action is likely to be required.This figure of 400 Bq m-3is comparable with the ActionLevel of 200 Bq m-3in homes, taking into account thefact that most people spend much more time in thehome than at work. For levels above 400 Bq m-3theemployer may well need to take action to bring theselevels down.
HSG guidance - INDG210 RADON in the workplace
http://www.hse.gov.uk/pubns/indg210.pdf - free leaflet
For radon detectors there are loads to try from, google will give many places to start looking.
|
|
|
|
|
|
Rank: Guest
|
Posted By Ian Waldram
But pretty hard to detect other than over a long period, as it's an alpha-emitter. Unless you have naturally radioactive scale or sludge inside your vessels (usually referred to as NORM Or LSA in the oil industry), a good sweep with fresh air will remove any risk from Radon itself. If you do have such scale, the risk isn't from the Radon, but from dust which can enter your lungs and emit alpha particles there as it decays to Radon. The particles have such low energy that they can't penetrate to sensitive organs unless they start from inside the body.
|
|
|
|
|
|
You cannot post new topics in this forum.
You cannot reply to topics in this forum.
You cannot delete your posts in this forum.
You cannot edit your posts in this forum.
You cannot create polls in this forum.
You cannot vote in polls in this forum.