RMS System Design & Installation 2

Question 1

When installing a sub-slab depressurization (SSD) system, what is the minimum recommended suction pit diameter?

Accepted Answer

3 inches

Answer

A suction pit of at least 3 inches in diameter is recommended to ensure adequate airflow communication beneath the slab.

Question 2

Which diagnostic test is used to assess how well air moves through the sub-slab material before system design?

Accepted Answer

Sub-slab communication test

Answer

A sub-slab communication test (using a vacuum or airflow device) determines how freely air moves through the material under the slab, guiding suction point placement.

Question 3

A radon mitigation system installed in a house with a crawl space typically uses which primary method?

Accepted Answer

Sub-membrane depressurization

Answer

Sub-membrane depressurization (SMD) is used in crawl spaces, where a plastic barrier is laid over the soil and a fan draws radon from beneath it.

Question 4

What is the purpose of a U-tube manometer in a radon mitigation system?

Accepted Answer

To indicate fan operating pressure differential

Answer

A U-tube manometer installed in the pipe indicates the pressure differential, confirming the fan is operating and creating suction.

Question 5

When routing radon vent pipe through conditioned space, what is required to prevent radon from entering the house if the pipe is breached?

Accepted Answer

Continuous negative pressure maintained throughout the run

Answer

EPA standards require that all pipe joints in conditioned space be sealed and that the system maintain negative pressure to prevent radon from leaking into living areas.

(RMS) Radon Mitigation Specialist Practice Test

(RMS) Radon Mitigation Specialist Practice Test

RMS System Design & Installation 2