RMS Mitigation System Design & Installation 3

Question 1

What does 'extension of radon suction field' mean in the context of SSD system performance?

Accepted Answer

The area under the slab influenced by negative pressure from one suction point

Answer

The suction field extension describes how far the negative pressure zone spreads beneath the slab from a single suction pit location.

Question 2

A contractor is installing an SSD system in a home with a sump pump pit. What should be done with the sump pit?

Accepted Answer

Seal the sump pit cover gas-tight and use it as a suction point or install a separate suction pit

Answer

A sump pit can serve as a suction point if sealed with a gas-tight cover, since it already provides access to the sub-slab area.

Question 3

Which of the following is a key difference between active and passive sub-slab depressurization systems?

Accepted Answer

Active systems use a fan; passive systems rely on natural stack effect and thermal buoyancy

Answer

Active SSD uses a mechanically driven fan, while passive SSD relies solely on natural pressure differences like thermal stack effect without a fan.

Question 4

When performing a building pressure field extension test, a contractor drills a small hole and uses a device to measure air movement. What instrument is used?

Accepted Answer

Digital manometer or incense stick

Answer

A digital manometer or incense stick/smoke puffer is used to detect air movement and measure pressure differential at the test hole.

Question 5

What minimum vertical height above the roofline must a radon mitigation exhaust pipe terminate according to EPA guidelines?

Accepted Answer

12 inches

Answer

EPA guidelines specify the exhaust pipe must terminate at least 12 inches above the roofline to ensure adequate dispersion of radon.

(RMS) Radon Mitigation Specialist Practice Test

(RMS) Radon Mitigation Specialist Practice Test

RMS Mitigation System Design & Installation 3