Radon Practice Exam |89 Questions and Answers
If you own multiple continuous Radon monitors, at what frequency should a source check
take place? - -6 months
-Radon gas will pass through most filters. - -True
-The basic parts of an atom are: - -neutron, proton, electron
-What passive device is most adversely affected by humidity? - -Open Faced Charcoal
-The EPA says that most homes can be reduced to 2.0 pCi/l or less. - -True
-Detectors should be placed
1. ___________ inch/inches from the floor
2. ___________ foot/feet from an exterior wall
3.____________ foot/feet from the ceiling
4.____________ foot/feet from an exterior opening
5. No more than ____________ foot/feet off the floor - -20
1
1
3
8
-According to national measurement protocols, enclosed bathrooms, kitchens, and garages
are acceptable places to test in a pinch. - -False
-What is the average annual Radon concentration in homes in the U.S., according to the
EPA? - -1.3
-What is a Curie? - -Radioactive decays from one gram of Radium
-A crawlspace would most likely see a reduction in radon levels above from which type of
mitigation technique? - -sub membrane depressurization
-Depressurizing drain tile found beneath a basement slab can be an effective mitigation
technique? - -True, as long as it does not represent a short circuit or hinder water drainage
-What typically causes the greatest amount of radon entry into U.S. homes annually? - -
stack effect
-In most cases, a long term test gives a better indication of the annual average. - -True
-What type of quality control test is used to check and evaluate the accuracy of passive
measurement devices? - -spiked measurements
, -Electret Ion Chambers measure Radon levels from what? - -A drop in charge on the plate
from ions created in the chamber
-What is the term that describes two measurements made at the same time and in the
same location or side-by-side? - -duplicate measurements
-What is radon's atomic mass (how much does it "weigh")? - -222
-Primary tobacco smoking is still the greatest risk of contracting lung cancer. - -true
-Which measurement should be used for a mitigation decision if an initial short term test
showed 6.7 pCi/l and a follow up short term test showed 5.4 pCi/l? - -6.1
-After the mitigation system begins operating, a post-mitigation measurement should be
initiated within what period - -24 hours and 30 days
-A routine instrument check should be performed as frequently as possible - -true
-Typically, sealing cracks like a perimeter slab/wall joint, improves sub slab
depressurization systems. - -true
-Your best course of action is to reduce tampering is: - -implement measures and
communications to both discourage and detect tampering
-Which room will have the lowest equilibrium ratio? - -A room with air filtration and
circulation
-According to the Citizens Guide or extended testing protocol, which of the following is
correct for performing an initial short term test? - -single device in the lowest lived in level
-Typically, when is the stack effect greatest? - -During the heating season
-Which of the following testing procedures is recommended by the EPA for people not
selling a home? - -conduct an initial test, and then do a follow-up test if initial test result is
4 pCi/L or more
-With what frequency should users of passive time integrating detectors conduct blank
measurements? - -5 per 100, or 25 each month, whichever is smaller
-If exposed to 4 pCi/l over an average lifetime, how many people out of 1,000 who never
smoked would be expected to get lung cancer, according to the EPA? - -7
-Charcoal technology devices are true integrators. - -False
If you own multiple continuous Radon monitors, at what frequency should a source check
take place? - -6 months
-Radon gas will pass through most filters. - -True
-The basic parts of an atom are: - -neutron, proton, electron
-What passive device is most adversely affected by humidity? - -Open Faced Charcoal
-The EPA says that most homes can be reduced to 2.0 pCi/l or less. - -True
-Detectors should be placed
1. ___________ inch/inches from the floor
2. ___________ foot/feet from an exterior wall
3.____________ foot/feet from the ceiling
4.____________ foot/feet from an exterior opening
5. No more than ____________ foot/feet off the floor - -20
1
1
3
8
-According to national measurement protocols, enclosed bathrooms, kitchens, and garages
are acceptable places to test in a pinch. - -False
-What is the average annual Radon concentration in homes in the U.S., according to the
EPA? - -1.3
-What is a Curie? - -Radioactive decays from one gram of Radium
-A crawlspace would most likely see a reduction in radon levels above from which type of
mitigation technique? - -sub membrane depressurization
-Depressurizing drain tile found beneath a basement slab can be an effective mitigation
technique? - -True, as long as it does not represent a short circuit or hinder water drainage
-What typically causes the greatest amount of radon entry into U.S. homes annually? - -
stack effect
-In most cases, a long term test gives a better indication of the annual average. - -True
-What type of quality control test is used to check and evaluate the accuracy of passive
measurement devices? - -spiked measurements
, -Electret Ion Chambers measure Radon levels from what? - -A drop in charge on the plate
from ions created in the chamber
-What is the term that describes two measurements made at the same time and in the
same location or side-by-side? - -duplicate measurements
-What is radon's atomic mass (how much does it "weigh")? - -222
-Primary tobacco smoking is still the greatest risk of contracting lung cancer. - -true
-Which measurement should be used for a mitigation decision if an initial short term test
showed 6.7 pCi/l and a follow up short term test showed 5.4 pCi/l? - -6.1
-After the mitigation system begins operating, a post-mitigation measurement should be
initiated within what period - -24 hours and 30 days
-A routine instrument check should be performed as frequently as possible - -true
-Typically, sealing cracks like a perimeter slab/wall joint, improves sub slab
depressurization systems. - -true
-Your best course of action is to reduce tampering is: - -implement measures and
communications to both discourage and detect tampering
-Which room will have the lowest equilibrium ratio? - -A room with air filtration and
circulation
-According to the Citizens Guide or extended testing protocol, which of the following is
correct for performing an initial short term test? - -single device in the lowest lived in level
-Typically, when is the stack effect greatest? - -During the heating season
-Which of the following testing procedures is recommended by the EPA for people not
selling a home? - -conduct an initial test, and then do a follow-up test if initial test result is
4 pCi/L or more
-With what frequency should users of passive time integrating detectors conduct blank
measurements? - -5 per 100, or 25 each month, whichever is smaller
-If exposed to 4 pCi/l over an average lifetime, how many people out of 1,000 who never
smoked would be expected to get lung cancer, according to the EPA? - -7
-Charcoal technology devices are true integrators. - -False
