ASCS Quality Assurance & Compliance 3

Question 1

When restoring a fibrous glass-lined duct system, which NADCA-compliant method involves applying an encapsulant to exposed fibers?

Accepted Answer

Application of a sealant/encapsulant coating

Answer

Encapsulant coatings approved for duct use are applied to fibrous glass linings to seal exposed fibers after cleaning.

Question 2

Which federal law requires contractors to notify building occupants before disturbing asbestos-containing duct insulation?

Accepted Answer

NESHAP (40 CFR Part 61)

Answer

EPA's National Emission Standards for Hazardous Air Pollutants (NESHAP) regulations require notification before demolition or renovation that disturbs asbestos.

Question 3

An ASCS technician discovers microbial growth inside ductwork. What is the FIRST step required before applying an EPA-registered biocide?

Accepted Answer

Remove the source moisture problem and mechanically clean the surfaces

Answer

NADCA standards require that the source of moisture be corrected and surfaces mechanically cleaned before any biocide application.

Question 4

How often should NADCA-certified companies renew their NADCA membership and meet continuing education requirements?

Accepted Answer

Annually

Answer

NADCA membership and associated certifications require annual renewal, including documentation of continuing education.

Question 5

Which test uses a calibrated vacuum device to draw air through a filter media placed over a duct access panel to measure particulate?

Accepted Answer

Gravimetric analysis

Answer

Gravimetric analysis measures the weight of particulate collected on filter media by a calibrated vacuum, quantifying surface contamination.

(ASCS) Air Systems Cleaning Specialist Certification Practice Test

(ASCS) Air Systems Cleaning Specialist Certification Practice Test

ASCS Quality Assurance & Compliance 3