NRPP RMS case studies
NRPP RMS · Put your knowledge to work in context.
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. The NRPP RMS case studies are 5 cases and about 2,953 words.
1Short-Term Real Estate Test: Closed-House Violation and Placement Bias
A measurement professional is hired for a pre-listing short-term test in a 1978 split-level home. A CRM is placed in the finished basement bedroom, 20 inches above the floor, not within 3 feet of an exterior wall, and the client signs closed-house instructions.
651 words, about 3 min2Batch QC Failure: Duplicate Discrepancy, Elevated Blank, and Expired CRM Calibration
A measurement professional deploys twelve charcoal liquid scintillation detectors for a 72-hour test in a 12-unit apartment building, with one duplicate pair in unit 4B and one field blank. Results: the 4B pair reads 3.1 and 9.4 pCi/L; the field blank reads 0.8 pCi/L; the laboratory lower limit of detection is 0.6 pCi/L.
620 words, about 3 min3Post-Mitigation Failure: Short-Circuiting Through a Sump and Floor Drain
A contractor installs a sub-slab depressurization system in a 1965 ranch with a full basement. The design uses one suction point in the slab, 3-inch PVC, a 4-inch suction pit, and a 1/3 hp fan rated at 60 cfm at 2 inches of water column.
596 words, about 3 min4Combustion Appliance Spillage After System Commissioning
An SSD system is commissioned in a 1990 two-story colonial with a basement. The basement contains a naturally aspirated 40-gallon gas water heater and a Category I gas furnace, both vented into a masonry chimney.
551 words, about 3 min5Crawlspace and Basement Design: Treating Only Half the Foundation
A homeowner has a 2,400 sq ft house with a finished basement and an attached vented crawlspace with a bare soil floor. Pre-mitigation testing reads 11.4 pCi/L in the basement and 8.9 pCi/L in the first-floor living room.
535 words, about 3 min