Working Safely with Refrigerants Refrigerants Potential Hazards Potential
- Slides: 31
Working Safely with Refrigerants
Refrigerants
Potential Hazards
Potential Effects on the Human Body
ASHRAE’s Refrigerant Safety System
The Safety Group Classification System
The Safety Group Classification System - Toxicity
(A) ↓ Less Toxic (B) ↑ More Toxic Understanding the Toxicity Designations (A) and (B)
The Safety Group Classification System Flammability
Understanding the Flammability Designations (1), (2 L), (3) Ø (1) No Flame Propagation Ø (2) More Flammable Ø (2 L) More Flammable, but Low Max Burning Velocity Ø (3) Most Flammable
Safety Group Classification System Examples
Commonly Used Refrigerants in Our Industry
R 11 (A-1) R 12 (A-1) R 113 (A-1) R 500 (A-1) R 502 (A-1) CFCs – Chlorofluorocarbons
R 22 (A-1) R 123 (B-1) HCFCs – Hydrochlorofluorocarbons
Freon or Hydrofluorocarbons R 134 A (A-1) R 407 C (A-1) R 410 A (A-1) R 507 A (A-1)
HFOs Hydrofluoroolefins R 454 A (A 2 L) R 455 A (A 2 L) R 1234 yf (A 2 L)
HCs – Hydrocarbon R 290 (A-3) R 600 A (A-3)
Natural Ammonia R 717 (B 2 L)
Carbon Dioxide R 744 (A-1)
Additional Safety Information
How to Obtain the Safety Data Sheets
Safety Data Sheets
Safety Data Sheets - SECTION 1… IDENTIFICATION – (R 717)
Safety Data Sheets SECTION 2… HAZARD IDENTIFICATION (R 717)
Safety Data Sheets - SECTION 8… EXPOSURE CONTROLS/PERSONAL PROTECTION – (R 717)
Protection from Refrigerant Toxicity Hazards
Appropriate Respiratory Protection
Protection from Flammability Hazards
Protection from Burns and Frostbite
Some Common Symptoms of Overexposure to Refrigerants
Proper Storage of Refrigerants