NRRPT Nuclear Materials Radiation Protection Technologist Practice Test
Radiation protection technologist certification covering radiation fundamentals, dosimetry, contamination control, and radiation safety program management. Administered by National Registry of Radiation Protection Technologists. Key domains include Airborne Radioactivity Control, ALARA, Basic Atomic and Nuclear Physics and Biological Effects of Radiation. The exam consists of 150 questions over 240 minutes.
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An RPT is assigned to a cabinet x-ray unit case where leakage survey at 5 cm after a door-interlock repair. The supervisor asks for a quick field decision. Which response best reflects 21 CFR cabinet x-ray leakage expectations?
After a radioiodine hood backflow, a worker may have inhaled or ingested I-131. Nasal smears are positive but external dose is low. Which internal-dosimetry action best fits the radionuclide and pathway?
A trainee asks why a survey instrument responds during work involving a electron-capture nuclide. Which nuclear-process explanation should the RPT give?
During a sealed-source program review, an RPT finds a Co-60 irradiator source and notes that the shutter indicator failed during a pre-use check. Production wants to continue using the source because exposure rates are normal. What is the best source-control response?
A lapel air sampler used during vacuuming dry alpha-contaminated dust ran at 1.2 L/min for 90 minutes. The lab asks for the sample volume before converting activity to concentration. What volume and QA concern should the RPT communicate?