RMS Mitigation System Design & Installation

Question 1

What is the primary purpose of a radon mitigation system?

Accepted Answer

To reduce the radon levels inside the building

Answer

The sole and primary purpose of a radon mitigation system is to lower the concentration of radon gas within a building to levels considered safe by health organizations. Radon is a known carcinogen, and these systems are specifically designed to protect occupants from its harmful effects by preventing its entry or actively removing it.

Question 2

Which radon mitigation system is most commonly used in homes?

Accepted Answer

Active soil depressurization system

Answer

Active soil depressurization (ASD) is the most widely used and effective method for mitigating radon in existing homes, particularly those with slab-on-grade foundations or basements. This system uses a fan to create a vacuum beneath the foundation, drawing radon from the soil and venting it safely above the roofline. Its proven effectiveness and versatility make it the industry standard.

Question 3

How does an active radon mitigation system work?

Accepted Answer

It creates negative pressure to vent radon outside

Answer

An active radon mitigation system, typically an active soil depressurization system, works by using an electric fan to create a continuous negative pressure (vacuum) beneath the building's foundation. This negative pressure draws radon gas from the soil before it can enter the home and then vents it safely to the outdoors, usually above the roofline.

Question 4

What is a sub-slab depressurization system?

Accepted Answer

A system that vents radon from beneath the building using pipes

Answer

A sub-slab depressurization system is a specific type of active radon mitigation system. It involves installing a suction pipe through the concrete slab floor into the gravel or soil beneath. A fan connected to this pipe draws radon-laden air from under the slab and exhausts it safely outside, preventing it from entering the living space.

Question 5

Why is sealing cracks and gaps in a building important for radon mitigation?

Accepted Answer

It prevents radon from entering the building

Answer

Radon is a naturally occurring radioactive gas that seeps into buildings from the soil through cracks and other openings in the foundation. Sealing these entry points creates a physical barrier, directly blocking the primary pathway for radon gas to infiltrate the indoor environment. This is a fundamental step in reducing indoor radon concentrations and protecting occupants from its health risks.

(RMS) Radon Mitigation Specialist Practice Test

(RMS) Radon Mitigation Specialist Practice Test

RMS Mitigation System Design & Installation