NRPP RMS study guide
NRPP RMS · Work through your exam, one topic at a time.
The NRPP Radon Proficiency Program awards credentials to radon practitioners and has done so since 1998, and it is recognized by the EPA and accredited by the ANSI National Accreditation Board under ANSI/ISO/IEC 17024. The Measurement Professional Exam is one of the exams NRPP administers; NRPP also lists Measurement Technician, Mitigation Specialist, Mitigation Installer, SGM Compliance Inspector, and a New Jersey License Exam. This page is an independent study resource for candidates preparing for the measurement credential; it is not affiliated with, endorsed by, or sponsored by NRPP or the Indoor Environments Association (AARST). Candidates for the measurement credential are people who perform radon testing and reporting in buildings. Topics on this exam: Radon Measurement (measurement professional scope, per NRPP Measurement Professional Exam and applicable ANSI/AARST measurement standards) and Radon Mitigation and Soil Gas (mitigation specialist scope, per NRPP Mitigation Specialist Exams and applicable ANSI/AARST mitigation standards). The NRPP RMS study guide has 2 sections and about 636 words.
01Radon Measurement: Standards, Placement, and QA
This domain tests the measurement professional's scope under ANSI/AARST measurement protocols: test design, closed-building conditions, device placement, quality assurance, and interpreting results against the U.S. EPA 4 pCi/L action level. Maintain closed-building conditions for 12 hours before and throughout the test: exterior doors and windows closed; permanently installed HVAC operating normally; no temporary exhaust fans, window fans, or dryers venting outdoors. Sample the lowest livable level.
317 words, about 2 min02Radon Mitigation and Soil Gas: Diagnostics, SSD Design, and Verification
Mitigation and soil gas questions cover diagnostics, sub-slab depressurization (SSD) design, sealing, vent termination, and post-mitigation verification under ANSI/AARST SGM-SF. Run a pressure field extension (PFE) or communication test with a micromanometer and temporary test holes. Adequate extension is typically about 10 ft from the suction pit; if suction does not reach, add a suction point or improve the pit. SSD uses a fan to draw soil gas from beneath the slab and exhaust it outdoors.
319 words, about 2 min