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NRPP RADON MEASUREMENT TECHNICIAN AND PROFESSIONAL (ACTUAL) 2024 QUESTIONS AND ANSWERS
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NRPP RADON MEASUREMENT TECHNICIAN AND PROFESSIONAL (ACTUAL) 2024 QUESTIONS AND ANSWERS
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NRPP RADON MEASUREMENT TECHNICIAN ANDPROFESSIONAL (ACTUAL)
What are the Radon transport mechanisms? - ANSWERS-1. Air Pressure
Differences
2. Diffusion
3. Emanation
4. Well Water
What is diffusion transport? - ANSWERS-Movement from high to low
concentrations
What is emanation transport? - ANSWERS-Release of radon from the surface of a
building material
What kind of follow up tested is recommended in karst geologic regions? -
ANSWERS-Low test results should be confirmed with repeated tests during
different seasons in the year
When does the EPA recommend fixing your own home mitigation is
recommended for your own home if you had a short-term test at 4 pCi/L? -
ANSWERS-Your results are above 4 pCi/L and you did follow up with a short-term
test with an average that is higher than 4 pCi/L or a long term result above 4 pCi/L
,When does the EPA recommend fixing a home for a real-estate transaction? -
ANSWERS-Two short term tests resulted in an average at 4 pCi/L or higher, or a
CRM where the average was 4 pCi/L+
What are background measurements and how are they made? - ANSWERS-
Measuring any additional source of radiation from the environment that may
cause inaccuracies in the test. Done by exposing an active instrument to a Radon
free gas or analyzing unexposed detectors
How often are continuous monitors calibrated? - ANSWERS-Annually, as per
manufacturer's directions
How often are comparison/simultaneous measurements collected? - ANSWERS-
Every 10th measurement
When are condition checks performed for Passive and Active Tests? - ANSWERS-
Passive - At the beginning and end of each test
Active - at the beginning of each test
What percentage of tests are blanks? - ANSWERS-5%
What percentage of tests are dupes? - ANSWERS-10%
What percentage of tests are spikes? - ANSWERS-3%
, What is the RPD if you have a test at 8.7 pCi/L and one at 7.3 pCi/L? - ANSWERS-
17.5%
What are the criteria for using a Duplicate Control Chart for ATD, CLS, and EIC? -
ANSWERS-Avg of 2 Devices Warning Limit RPD Control RPD
> 4 pCi/L 28% 36%
2-3.9 pCi/L 50% 67%
<2 pCi/L N/A <MDC
What is the EPA action level for Radon? - ANSWERS-4 pCi/L
What is the risk of smokers and non-smokers getting lung cancer from Radon? -
ANSWERS-62/1000 smokers
7/1000 non smokers
What determines the risk of getting lung cancer from Radon? - ANSWERS-
Concentration of Radon and RDPs and Length of Exposure
Hoe does Radon enter the home? - ANSWERS-Radon gas moves through the
ground due to air pressure differentials in the home, and up into the home
through cracks or other openings in the foundation. Can also enter through well
water and some building materials.
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