When to test?
Radon testing can be conducted for evaluating the radon level. All such building parts should be closed which let the inflow and outflow of the air like door and windows for at least 12 hours prior to the test. One does not have to empty the building to perform this test but certain cautions must be maintained for example if a person leaves the building he or she must close the door immediately to cut the time it allows the air to enter or leave the building.
Some building has pre-installed radon system mitigation systemavailable those along with heat exchangers, combustion furnace can be operated in under normal circumstances. It has no effect whatsoever on the test conducive environment. Electrical devices such as fans must be operated with caution which can increase the inflow and outflow of air inside the building. Extraordinary weather conditions can affect the test so conduction of test should be avoided under extreme weather condition like in storms having a wind speed of more than 30 miles per hour.
How long to leave the sample place?
The time required for Radon Testing can vary from 72 to 168 days (3-7 days). The minimum time that must be allowed for the system to work is 3 days. You can extend it up to 7 days provided it is not being operated in humid conditions. The test reading would be computed on the average reading of last 4 days of the exposure period.
Placement of the equipment:
The test must be performed at the lowest area of the building which is frequented by the inmates of the building; however, the inmate of Pennsylvania State must exercise an exception and they should test the less frequented areas of the building. It is important to place it where it won’t be disturbed as in most of the case the test is performed for a single time and right after the test the process of mitigation is started so you get only one chance to get the test right that is why the placed of the system has to absolutely best to avoid anything going south.
The most common method is to select several places as sample areas for the testing. The distance from the ground should measure between 2 – 6 feet which a normally breathing area for humans. The sampler should be placed in a way that it gets maximum exposure the open area of the room. It can be fixed with the ceiling or walls. The sampler must be placed away from the doors, air conditioners, heaters and windows so these may not adversely affect the test readings by misleading the sampler. Sampler must also not be near heated emitting objects like stoves, fire and heaters. Humidity also effects the sampler so avoid places with high humidity like bathrooms.
After performing radon testing, the delivery of sampler to the lab in quick time is of prime importance. As Sampler cannot retain radon forever it loses it as the time goes. So sampler must reach lab within 3-4 days of test conduction to get accurate results.