MRS Removal Techniques & Methods 3

Question 1

When using hand scrubbing to remove surface mold, the scrub brush should be:

Accepted Answer

Bagged and discarded or decontaminated after use

Answer

Scrub brushes used in mold remediation must be treated as contaminated materials and either discarded or thoroughly decontaminated.

Question 2

Which substrate is considered 'semi-porous' and may sometimes be cleaned rather than removed?

Accepted Answer

Solid wood framing lumber

Answer

Solid wood framing is semi-porous and can often be cleaned by sanding or wire brushing if structurally sound and thoroughly dried.

Question 3

A remediation technician discovers mold on HVAC ductwork lined with fiberglass insulation. The correct action is to:

Accepted Answer

Remove and replace the duct liner; clean the outer duct shell

Answer

Fiberglass duct liner cannot be adequately remediated and must be replaced; the metal shell can be cleaned and treated.

Question 4

The term 'source removal' in mold remediation specifically refers to:

Accepted Answer

Physically removing mold-contaminated materials from the affected area

Answer

Source removal means physically removing the mold and contaminated materials, not just addressing the moisture problem.

Question 5

When removing drywall with mold on the back (non-visible) side, the technician should:

Accepted Answer

Score and remove in contained sections, keeping contaminated face inward when bagging

Answer

Controlled sectional removal with the contaminated face folded inward minimizes spore release during the removal process.

(MRS) Mold Remediation Specialist Practice Test