NRPP Radon Measurements exam with || || || || ||
correct answers ||
If a sample of radon is taken from a room that is known to be at 125pCi/L and
|| || || || || || || || || || || || || || || || ||
is kept in a well sealed container, what will the approximate radon activity be
|| || || || || || || || || || || || || ||
within the container after eight days? - CORRECT ANSWERS ✔✔31.3
|| || || || || || || || || ||
Radon decay products have (or )longer shorter half lives than radon gas? -
|| || || || || || || || || || || || ||
CORRECT ANSWERS ✔✔Shorter || ||
The ionization of an otherwise electrically neutral atom is used in measuring
|| || || || || || || || || || || ||
radiation. Which process best describes ionization? - CORRECT ANSWERS
|| || || || || || || || ||
✔✔An uncharged atom gains or loses orbital electrons ()and becomes
|| || || || || || || || || ||
electrically charged. ||
Give three characteristics of radon - CORRECT ANSWERS ✔✔Half life of 3.8
|| || || || || || || || || || || ||
days ||
Inert
Can't sense (see, smell, or taste)
|| || || || || ||
Radioactive
Naturally occurring || ||
Gas
,If a room within a home is determined to be at 25 pCi/L, what working level
|| || || || || || || || || || || || || || || ||
would be expected in this room using typical assumptions for equilibrium
|| || || || || || || || || || ||
ratio in residential buildings? - CORRECT ANSWERS ✔✔0.13
|| || || || || || ||
What is the highest working level that could be observed in a room having a
|| || || || || || || || || || || || || || ||
constant radon activity of 10 pCi/L ? - CORRECT ANSWERS ✔✔0.1
|| || || || || || || || || ||
f a radon measurement is calculated to be 7.8456 pCi/L, what number should
|| || || || || || || || || || || || ||
be written on the report to the client? - CORRECT ANSWERS ✔✔7.8 pCi/L
|| || || || || || || || || || || ||
A building has very high internal air circulation rate and was measured at
|| || || || || || || || || || || || ||
0.03WL. What can be said about the radon concentrations? - CORRECT
|| || || || || || || || || || ||
ANSWERS ✔✔The radon is probably more than 6 pCi/L. || || || || || || || ||
What is the approximate outdoor radon concentration? - CORRECT
|| || || || || || || || ||
ANSWERS ✔✔0.4 pCi/L || ||
Within the U.S, the EPA believes the average annual indoor radon activity to
|| || || || || || || || || || || || ||
be: - CORRECT ANSWERS ✔✔1.3 pCi/L
|| || || || ||
What would be the expected working levels in a room at 4 pCi/L, using
|| || || || || || || || || || || || || ||
typical assumptions for equilibrium ratio in residential buildings? - CORRECT
|| || || || || || || || ||
ANSWERS ✔✔0.02 WL
|| || ||
, In order to calculate the equilibrium ratio in a home you need to know: -
|| || || || || || || || || || || || || || ||
CORRECT ANSWERS ✔✔Results of simultaneous measurements of radon
|| || || || || || || ||
and radon decay products.
|| || ||
Lung cancer risks exist with exposures to radon concentrations below 4pCi/L.
|| || || || || || || || || ||
- CORRECT ANSWERS ✔✔True
|| || || ||
Short-term measurements can be factored by the time of deployment to
|| || || || || || || || || || ||
determine a year-long average. - CORRECT ANSWERS ✔✔False
|| || || || || || ||
The results of a short-term, closed building test indicates the highest the
|| || || || || || || || || || || ||
radon could ever be. - CORRECT ANSWERS ✔✔False
|| || || || || || ||
Radon is only a concern in homes, not in schools and workplaces. -
|| || || || || || || || || || || || ||
CORRECT ANSWERS ✔✔False || ||
When emitted within the lungs, which one of the three ionizing radiation
|| || || || || || || || || || || ||
types causes the most cell damage within the lung? - CORRECT ANSWERS
|| || || || || || || || || || || ||
✔✔alpha particle ||
The health risk of radon has most strongly been determined by what studies?
|| || || || || || || || || || || ||
- CORRECT ANSWERS ✔✔Occupational exposures and lung cancer
|| || || || || || || || ||
incidence in underground miners Miner Studies|| || || || ||
According to the most recent version of U.S. EPA's Home Buyer's and Seller's
|| || || || || || || || || || || || ||
Guide, what is the estimated number of cancer deaths that occur annually in
|| || || || || || || || || || || || ||
correct answers ||
If a sample of radon is taken from a room that is known to be at 125pCi/L and
|| || || || || || || || || || || || || || || || ||
is kept in a well sealed container, what will the approximate radon activity be
|| || || || || || || || || || || || || ||
within the container after eight days? - CORRECT ANSWERS ✔✔31.3
|| || || || || || || || || ||
Radon decay products have (or )longer shorter half lives than radon gas? -
|| || || || || || || || || || || || ||
CORRECT ANSWERS ✔✔Shorter || ||
The ionization of an otherwise electrically neutral atom is used in measuring
|| || || || || || || || || || || ||
radiation. Which process best describes ionization? - CORRECT ANSWERS
|| || || || || || || || ||
✔✔An uncharged atom gains or loses orbital electrons ()and becomes
|| || || || || || || || || ||
electrically charged. ||
Give three characteristics of radon - CORRECT ANSWERS ✔✔Half life of 3.8
|| || || || || || || || || || || ||
days ||
Inert
Can't sense (see, smell, or taste)
|| || || || || ||
Radioactive
Naturally occurring || ||
Gas
,If a room within a home is determined to be at 25 pCi/L, what working level
|| || || || || || || || || || || || || || || ||
would be expected in this room using typical assumptions for equilibrium
|| || || || || || || || || || ||
ratio in residential buildings? - CORRECT ANSWERS ✔✔0.13
|| || || || || || ||
What is the highest working level that could be observed in a room having a
|| || || || || || || || || || || || || || ||
constant radon activity of 10 pCi/L ? - CORRECT ANSWERS ✔✔0.1
|| || || || || || || || || ||
f a radon measurement is calculated to be 7.8456 pCi/L, what number should
|| || || || || || || || || || || || ||
be written on the report to the client? - CORRECT ANSWERS ✔✔7.8 pCi/L
|| || || || || || || || || || || ||
A building has very high internal air circulation rate and was measured at
|| || || || || || || || || || || || ||
0.03WL. What can be said about the radon concentrations? - CORRECT
|| || || || || || || || || || ||
ANSWERS ✔✔The radon is probably more than 6 pCi/L. || || || || || || || ||
What is the approximate outdoor radon concentration? - CORRECT
|| || || || || || || || ||
ANSWERS ✔✔0.4 pCi/L || ||
Within the U.S, the EPA believes the average annual indoor radon activity to
|| || || || || || || || || || || || ||
be: - CORRECT ANSWERS ✔✔1.3 pCi/L
|| || || || ||
What would be the expected working levels in a room at 4 pCi/L, using
|| || || || || || || || || || || || || ||
typical assumptions for equilibrium ratio in residential buildings? - CORRECT
|| || || || || || || || ||
ANSWERS ✔✔0.02 WL
|| || ||
, In order to calculate the equilibrium ratio in a home you need to know: -
|| || || || || || || || || || || || || || ||
CORRECT ANSWERS ✔✔Results of simultaneous measurements of radon
|| || || || || || || ||
and radon decay products.
|| || ||
Lung cancer risks exist with exposures to radon concentrations below 4pCi/L.
|| || || || || || || || || ||
- CORRECT ANSWERS ✔✔True
|| || || ||
Short-term measurements can be factored by the time of deployment to
|| || || || || || || || || || ||
determine a year-long average. - CORRECT ANSWERS ✔✔False
|| || || || || || ||
The results of a short-term, closed building test indicates the highest the
|| || || || || || || || || || || ||
radon could ever be. - CORRECT ANSWERS ✔✔False
|| || || || || || ||
Radon is only a concern in homes, not in schools and workplaces. -
|| || || || || || || || || || || || ||
CORRECT ANSWERS ✔✔False || ||
When emitted within the lungs, which one of the three ionizing radiation
|| || || || || || || || || || || ||
types causes the most cell damage within the lung? - CORRECT ANSWERS
|| || || || || || || || || || || ||
✔✔alpha particle ||
The health risk of radon has most strongly been determined by what studies?
|| || || || || || || || || || || ||
- CORRECT ANSWERS ✔✔Occupational exposures and lung cancer
|| || || || || || || || ||
incidence in underground miners Miner Studies|| || || || ||
According to the most recent version of U.S. EPA's Home Buyer's and Seller's
|| || || || || || || || || || || || ||
Guide, what is the estimated number of cancer deaths that occur annually in
|| || || || || || || || || || || || ||
