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NRPP Radon Measurement Technician and Professional| Questions and 100% Complete Solutions
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NRPP Radon Measurement Technician and Professional| Questions and 100% Complete Solutions
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NRPP Radon Measurement Technician andProfessional| Questions and 100% Complete
Solutions
What does closed-building conditions mean? - ✔1. All windows are closed
2. All exterior doors are closed, except normal entry and exit
3. Heating/cooling systems must be at normal occupied conditions (65-80°F)
4. Ventilation with outdoor air must be set to lowest possible ventilation conditions
5. No operation of whole-house fans or fireplaces
6. Avoid excessive operation of clothes dryers, range hoods, and bathroom fans
7. Do not blow fans directly at device
8. Normal operation of humidifiers and dehumidifiers, central vacuum cleaners, combustion air
fans, and attic fans
9. Window air conditioners on recirculation mode only
10. Evaporative/swamp coolers are not allowed to operate
11. Heat/Energy recovery ventilators operating at lowest setting
* If return ducts are under concrete floors, conduct at least one test when the air handler is on
When are closed building conditions required? - ✔For any short-term test lasting less than
4 days
,What is the minimum length of time for a long-term test? - ✔91 days
True or False - Closed building conditions are not required for a long-term test? - ✔True
What should mitigation decisions be based on? - ✔Results of long-term test or the average
of two short-term tests
When should you avoid radon testing? - ✔1. No short-term testing during unusual
severe weather
2. At the earliest convenience (moving in to a new home, construction)
3. When heating systems are not operating both day and night
4. Where any part of a building is not occupied for a good part of a 24 hour day
When is radon in water a problem? - ✔For homes with a private well
True or False - Sumps and groundwater draining systems can be radon entry points - ✔True
True or False - Operating a force air HVAC system decreases indoor radon concentrations
- ✔False
True or False - Swamp Coolers, whole house fans, and window are conditioners lower
radon concentrations - ✔True
What should be inspected/recorded when looking at a mitigation system? - ✔1.
Operational status of the system
2. Any temporary mitigation strategies
3. Any limits of the inspection
4. Proper pipe installation - watertight, sloped to the soil, and secure
, 5. Electrical connections and disconnects - a switch or labeled circuit breaker to turn off the fan
6. Verify a proper discharge point - at least 10 feet above grade and 2 feet above or 10 feet
to the side of operable windows
7. Mitigation fans are outside and not below a living space
8. Check the manometer
9. Labeling and system documentation - all components should be labeled and
documentation is attached to the system
Where should a radon test be placed? - ✔Where there are multiple foundation areas (slab-
on-grade, crawl space) and the lowest level of the home that could be occupied (Real Estate
Testing) or the lowest lived in level (Homeowner Testing)
What are the placement requirements for a radon test? - ✔3 feet from any opening to
the outdoors
20 inches above the floor
1 foot from an exterior wall
1 foot below the ceiling
4 inches from other test devices or objects
When is additional testing suggested? - ✔When there are multiple foundation areas
When the level of the home that is being tested is +2000 sq ft
When is a QC check required for passive radon device? - ✔Before use, after testing, and
check package and device for damage
*Any concerns must be reported to Qualified Testing Professional
When are QC checks required for CRMs? - ✔1. Before each use check for functionality and
do an instrument check per manufacturer directions
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