Practice Test Geeks(RMS) Radon Mitigation Specialist Practice Test
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Commercial Building Mitigation Flashcards

7 cards from real RMS practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Commercial Building Mitigation flashcards as text

  1. When testing a newly installed commercial SSD system, what instrument is used to verify negative pressure at each suction point?

    Answer: Manometer or digital differential pressure gauge

    A manometer or digital differential pressure gauge measures the pressure differential between the sub-slab and the building interior to confirm depressurization.

  2. In a commercial building with a hollow block foundation wall, what mitigation technique targets radon accumulating inside the block cavities?

    Answer: Block wall depressurization using suction applied to the block cores

    Block wall depressurization applies suction directly to hollow block cores to intercept radon before it enters the occupied space.

  3. What does the term 'system failure warning device' refer to in a commercial radon mitigation system?

    Answer: A visual or audible indicator that alerts occupants when the fan fails or loses pressure

    A system failure warning device (such as a manometer or alarm) alerts building managers when the mitigation fan loses suction or fails.

  4. Which standard specifically addresses radon mitigation in large buildings (schools, commercial)?

    Answer: ANSI/AARST MAMF-2017

    ANSI/AARST MAMF-2017 (Mitigation for Multifamily Buildings and Large Buildings) is the standard covering radon mitigation in large and commercial structures.

  5. A commercial building SSD system is drawing in outdoor air through slab cracks instead of sub-slab soil gas. What is the likely cause?

    Answer: Sub-slab communication is too good—pressure field has extended to slab perimeter

    When pressure field extension reaches the slab perimeter, the system draws in outdoor air rather than soil gas, indicating the suction point may be too powerful or well-communicating for the area.

  6. What is the purpose of sealing slab penetrations and expansion joints in a commercial mitigation project?

    Answer: To reduce radon entry pathways and improve system efficiency

    Sealing penetrations and joints reduces bypass pathways that allow radon-laden soil gas to enter the building, improving overall mitigation effectiveness.

  7. In a post-mitigation radon test for a commercial building, where should test devices be placed?

    Answer: In the lowest frequently occupied areas, per ANSI/AARST testing protocols

    ANSI/AARST protocols specify testing in the lowest frequently occupied areas because radon concentrations are typically highest near ground level.

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Sources & references

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  1. nrpp.info — Eligibility, score validity, retake policy, fees, registration deadline, time limit, test delivery, exam format · verified Oct 2026