Radon Review Quiz 6 (Mitigation)Questions and
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New Update 2026/2027
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Terms in this set (33)
A measurement of the differential c. Fluctuate
pressure across a slab is carried out
by a mitigator on a day
characterized by gusts of wind. In
comparison to measurements made
on a calm day, the windy day
pressure differential readings
across the slab will:
Select one:
a. Remain constant
b. Increase
c. Fluctuate
d. Decrease
,A mitigator is called to a house with d. Suction-field extension testing in the
a basement that has a radon unfinished portion of the basement, with one
reading of 20 pCi/L. Half of the vacuum-cleaner suction hole, and one to four
basement is finished, and it has pressure-test holes at remote corners of the
parquet flooring. Since all unfinished portion.
diagnostic testing is to be
performed, which of the following
would be the most logical test to
perform FIRST?
Select one:
a. Suction-field extension testing in
the unfinished portion of the
basement, with one or two vacuum-
cleaner suction holes, and with
pressure-test holes at distances of 1,
5, 10, and 15 feet in at least two
directions away from each test hole.
b. Suction-field extension testing,
with one vacuum-cleaner suction
hole each in the finished and
unfinished portions of the
basement, and four pressure-test
holes (one in each corner) in each
portion.
c. Sub-slab radon concentration
measurements, through three or
four sample holes each in the
finished and unfinished portions of
the basement.
d. Suction-field extension testing in
the unfinished port
, A Pressure Field Extension (PFE) a. 41 CFM
diagnostic test has been conducted
with a vacuum cleaner attached at Assuming a pipe diameter of 3 inches since that is
preferred sub-slab suction point via what you made the pitot tube measurements
a 2-foot length of 3-inch pipe. inside, one multiplies the velocity obtained by the
Three pitot tube measurements to cross-sectional area of the pipe.
determine air volume were made
with results of 0.045, 0.036 and Cross sectional Area = п r2
0.058 inches of water column. How Cross sectional area of 3 inch pipe = 3.14 x 1.52 =
much air is being extracted by your 3.14 x 2.25 = 7.065 sq inches.
shop vacuum (assuming an air
temperature of 70 degrees F)? Cross Sectional Area =7.065 sq in / 144 = 0.049 sq
Select one: ft
a. 41 CFM 825 Feet per minute x 0.049 Sq feet = 40.5 CFM
b. 5,828 CFM Cubic Feet per Minute (round up to 41 CFM)
c. 72 CFM
d. 88 CFM
A radon mitigation worker spends a b. 0.0085 WLM
day and a half working in a house
that had been previously tested at Calculate radon decay products in units of WL
12 pCi/L with a follow-up test of 8 assuming a 100% Equilibrium Factor
pCi/L. What exposure has the
worker received that would be WL = 12 * 1.0/100 = 0.12 WL
recorded in their file, assuming after
completing the job he/she went WLM = WL x hours/170 hours
fishing rather than start another
radon job?
Select one:
a. 0.080 WLM
b. 0.0085 WLM
c. 0.0094 WLM
d. 0.0042 WLM
Answers with Complete Solutions 100% Correct |
New Update 2026/2027
Save
Terms in this set (33)
A measurement of the differential c. Fluctuate
pressure across a slab is carried out
by a mitigator on a day
characterized by gusts of wind. In
comparison to measurements made
on a calm day, the windy day
pressure differential readings
across the slab will:
Select one:
a. Remain constant
b. Increase
c. Fluctuate
d. Decrease
,A mitigator is called to a house with d. Suction-field extension testing in the
a basement that has a radon unfinished portion of the basement, with one
reading of 20 pCi/L. Half of the vacuum-cleaner suction hole, and one to four
basement is finished, and it has pressure-test holes at remote corners of the
parquet flooring. Since all unfinished portion.
diagnostic testing is to be
performed, which of the following
would be the most logical test to
perform FIRST?
Select one:
a. Suction-field extension testing in
the unfinished portion of the
basement, with one or two vacuum-
cleaner suction holes, and with
pressure-test holes at distances of 1,
5, 10, and 15 feet in at least two
directions away from each test hole.
b. Suction-field extension testing,
with one vacuum-cleaner suction
hole each in the finished and
unfinished portions of the
basement, and four pressure-test
holes (one in each corner) in each
portion.
c. Sub-slab radon concentration
measurements, through three or
four sample holes each in the
finished and unfinished portions of
the basement.
d. Suction-field extension testing in
the unfinished port
, A Pressure Field Extension (PFE) a. 41 CFM
diagnostic test has been conducted
with a vacuum cleaner attached at Assuming a pipe diameter of 3 inches since that is
preferred sub-slab suction point via what you made the pitot tube measurements
a 2-foot length of 3-inch pipe. inside, one multiplies the velocity obtained by the
Three pitot tube measurements to cross-sectional area of the pipe.
determine air volume were made
with results of 0.045, 0.036 and Cross sectional Area = п r2
0.058 inches of water column. How Cross sectional area of 3 inch pipe = 3.14 x 1.52 =
much air is being extracted by your 3.14 x 2.25 = 7.065 sq inches.
shop vacuum (assuming an air
temperature of 70 degrees F)? Cross Sectional Area =7.065 sq in / 144 = 0.049 sq
Select one: ft
a. 41 CFM 825 Feet per minute x 0.049 Sq feet = 40.5 CFM
b. 5,828 CFM Cubic Feet per Minute (round up to 41 CFM)
c. 72 CFM
d. 88 CFM
A radon mitigation worker spends a b. 0.0085 WLM
day and a half working in a house
that had been previously tested at Calculate radon decay products in units of WL
12 pCi/L with a follow-up test of 8 assuming a 100% Equilibrium Factor
pCi/L. What exposure has the
worker received that would be WL = 12 * 1.0/100 = 0.12 WL
recorded in their file, assuming after
completing the job he/she went WLM = WL x hours/170 hours
fishing rather than start another
radon job?
Select one:
a. 0.080 WLM
b. 0.0085 WLM
c. 0.0094 WLM
d. 0.0042 WLM
