FREE ESCO A2L Refrigerant Safety, Handling & Storage Questions and Answers

Question 1

What classification does A2L represent under ASHRAE's refrigerant safety group?

Accepted Answer

A2L – Mildly flammable, low toxicity

Answer

B1 – Non‑flammable, high toxicity

Answer

A3 – Highly flammable, low toxicity

Answer

B2 – Flammable, high toxicity

Question 2

Which personal protective equipment (PPE) is recommended when charging systems with A2L refrigerants?

Accepted Answer

Safety goggles and gloves

Answer

Steel‑toe boots only

Answer

Dust mask and earplugs

Answer

No special PPE required

Question 3

Before storing A2L cylinders, which key factor must be verified?

Accepted Answer

Proper upright position in ventilated area

Answer

That cylinders are horizontal

Answer

That cylinders are completely empty

Answer

That cylinders are painted black

Question 4

What is the primary hazard when A2L refrigerant leaks in an enclosed space?

Accepted Answer

Oxygen displacement and ignition risk

Answer

Corrosion of metal surfaces

Answer

Rapid ozone formation

Answer

Excessive humidity

Question 5

Which detector type is most suitable for identifying A2L refrigerant leaks?

Accepted Answer

NDIR (Non‑Dispersive Infrared) sensor

Answer

Ultrasonic leak detector

Answer

Mercury thermometer

Answer

CO₂ detector

Question 6

When transporting A2L cylinders in a service vehicle, valves should be:

Accepted Answer

Fitted with protective caps

Answer

Open slightly for pressure relief

Answer

Left uncapped for quick use

Answer

Removed and stored separately

Question 7

During recovery of A2L refrigerant, why is using equipment rated for A2L essential?

Accepted Answer

To safely handle flammability characteristics

Answer

To increase recovery speed

Answer

To maintain warranty

Answer

To improve refrigerant purity

Question 8

What is the recommended ventilation rate in a mechanical room using A2L refrigerants according to typical codes?

Accepted Answer

0.5 air changes per hour or as triggered by sensors

Answer

No ventilation required

Answer

0.1 air changes per hour

Answer

5 air changes per hour continuously

Question 9

If an A2L refrigerant fire occurs, which extinguishing agent is generally recommended?

Accepted Answer

Dry chemical extinguisher

Answer

Water

Answer

Carbon dioxide snow only

Answer

Foam concentrate