🔍 Key Concepts

• R-134a refrigerant hazards (is it toxic? asphyxiant? flammable?) • Difference between eye/skin protection and respiratory protection • What type of PPE is needed when there is oxygen displacement in a confined space

💭 Think About

• Ask yourself what the main danger is when a large amount of R-134a is released in a confined space: breathing it, fire risk, or splashes to eyes/skin? • Think about whether ordinary dust masks or simple face coverings can protect you from gas in a confined space. • Consider standard confined-space entry procedures when the atmosphere may not support normal breathing.

✅ Before You Answer

• Check what kind of respiratory protection (if any) is recommended for refrigerant gas leaks in confined or poorly ventilated spaces. • Verify whether R-134a is generally classified as flammable/explosive under normal conditions. • Confirm which PPE is aimed at gas/asphyxiation hazards versus which are mainly for mechanical/chemical contact hazards.