ASCS Post-Cleaning Verification and Testing 2

Question 1

Which instrument is commonly used to detect and quantify airborne particulate matter during post-cleaning air quality verification?

Accepted Answer

Particle counter

Answer

A particle counter measures airborne particles by size and concentration, making it the appropriate tool for verifying air quality improvement after cleaning.

Question 2

In HVAC post-cleaning verification, what does 'source removal' confirmation verify?

Accepted Answer

That contaminants have been physically extracted from the HVAC system

Answer

Source removal verification confirms that contaminants have been physically extracted and removed from the HVAC system, not just displaced or encapsulated.

Question 3

A third-party post-cleaning inspection is performed by whom?

Accepted Answer

An independent inspector not affiliated with the cleaning contractor

Answer

A third-party inspection is conducted by an independent inspector with no affiliation to the cleaning contractor, ensuring an unbiased assessment.

Question 4

What type of camera is most effective for detailed visual inspection of interior ductwork surfaces after cleaning?

Accepted Answer

Video borescope or robotic inspection camera

Answer

A video borescope or robotic inspection camera allows direct visual inspection of interior duct surfaces that cannot be accessed by a technician.

Question 5

How does a post-cleaning particle count comparison typically work?

Accepted Answer

Particle counts are taken before cleaning begins and after to demonstrate improvement

Answer

Pre- and post-cleaning particle counts are taken and compared to demonstrate the quantifiable improvement achieved by the cleaning process.

(ASCS) Air Systems Cleaning Specialist Certification Practice Test

(ASCS) Air Systems Cleaning Specialist Certification Practice Test

ASCS Post-Cleaning Verification and Testing 2