NRPP RMFT study guide
NRPP RMFT · Work through your exam, one topic at a time.
The NRPP Radon Proficiency Program issues the Radon Measurement Field Technician (RMFT) credential, one of several certifications listed on the NRPP site under Measurement Technician Exams. NRPP describes itself as awarding radon practitioner credentials since 1998, recognized by the EPA and accredited by the ANSI National Accreditation Board under ANSI/ISO/IEC 17024, and it states that all certified individuals must conduct business in accordance with the applicable ANSI/AARST Standard(s). The NRPP RMFT study guide has 6 sections and about 1,535 words.
01Radon Fundamentals, Health Risk, and Units
This domain tests the science that drives field decisions: how radon-222 is produced, how it enters a building, why its decay products matter, and how units and action levels shape reporting. Radon-222 is a colorless, odorless noble gas in the uranium-238 decay chain.
266 words, about 1 min02Measurement Devices and Selection
This domain tests whether you can match a device to the test duration, building use, and QA requirements. Passive devices include charcoal canisters (typically 2–7 days; sensitive to humidity and temperature), alpha-track detectors (1–12 months; integrate long-term exposure), electret ion chambers (short or long), and liquid scintillation charcoal.
241 words, about 1 min03Test Planning, Placement, and Closed-House Conditions
This domain tests the field conditions that make a result defensible. Test the lowest livable level.
281 words, about 1 min04Field Deployment, Retrieval, and Chain of Custody
This domain tests whether the field record can withstand review. Before deployment, verify device condition, serial number, calibration or expiration, and packaging.
253 words, about 1 min05QA/QC, Duplicates, Blanks, and Cross-Checks
This domain tests the quality system behind each result. Follow a written QA/QC plan.
249 words, about 1 min06Reporting, Interpretation, and Client Communication
This domain tests whether results are explained accurately and ethically. Report the result, units, test dates, device type, location, closed-house conditions, and any deviations.
245 words, about 1 min