313A Refrigerant Handling — Questions and Answers
Question 1: Under Canadian regulations (Environmental Protection Act and provincial codes), what certification is required to purchase and handle refrigerants?
- No certification is required
- An ODP (Ozone Depletion Prevention) licence from the provincial authority and/or an Environmental Awareness Certificate for handling refrigerants (Correct answer)
- Only a business licence
- A university degree in chemistry
Correct answer: An ODP (Ozone Depletion Prevention) licence from the provincial authority and/or an Environmental Awareness Certificate for handling refrigerants
In Canada, technicians must hold valid certification to purchase, handle, and recover refrigerants. Requirements vary by province but generally include completion of an approved environmental awareness course and obtaining a certificate or licence from the provincial authority (e.g., TSSA in Ontario, BCSA in BC).
Question 2: What is the purpose of recovering refrigerant before opening a system for service?
- To weigh the refrigerant for billing purposes
- To prevent the release of refrigerant to the atmosphere, which is both illegal under Canadian law and harmful to the ozone layer or contributes to global warming (Correct answer)
- To create a vacuum in the system
- To test the refrigerant for contamination
Correct answer: To prevent the release of refrigerant to the atmosphere, which is both illegal under Canadian law and harmful to the ozone layer or contributes to global warming
Canadian federal and provincial regulations prohibit the intentional venting of refrigerants. CFC and HCFC refrigerants damage the ozone layer, while HFC refrigerants are potent greenhouse gases. Recovery captures the refrigerant in approved cylinders for reuse, recycling, or reclamation, protecting the environment and complying with the law.
Question 3: What is the difference between refrigerant recovery, recycling, and reclamation?
- They are all the same process
- Recovery removes refrigerant from a system; recycling cleans it for reuse in the field; reclamation reprocesses it to meet new-product specifications at an approved facility (Correct answer)
- Recovery is for CFC only; recycling is for HFC only
- They differ only in the equipment used
Correct answer: Recovery removes refrigerant from a system; recycling cleans it for reuse in the field; reclamation reprocesses it to meet new-product specifications at an approved facility
Recovery is the process of removing refrigerant from a system into an approved container. Recycling involves field-cleaning recovered refrigerant (removing oil, moisture, and non-condensables) for reuse. Reclamation is factory reprocessing to ARI 700 (new-product) specifications, involving chemical analysis, distillation, and certification.
Question 4: What colour coding identifies a recovery cylinder versus a refrigerant-specific cylinder?
- Recovery cylinders are always white
- Recovery cylinders are grey with yellow tops; specific refrigerants have designated colours (e.g., R-410A is rose/pink, R-22 is green) (Correct answer)
- All cylinders are the same colour
- Recovery cylinders are red with white tops
Correct answer: Recovery cylinders are grey with yellow tops; specific refrigerants have designated colours (e.g., R-410A is rose/pink, R-22 is green)
Recovery cylinders used in Canada are identified by a grey body with a yellow shoulder/top. Specific refrigerant types use designated colours: R-22 (green), R-134a (light blue), R-410A (rose/pink), R-404A (orange). Since 2004, the ARI assigned grey with the same coloured band to prevent misidentification, but older colour coding persists.
Question 5: What safety precautions must be taken when handling refrigerants?
- No special precautions are needed
- Work in well-ventilated areas, wear safety glasses and gloves, use proper recovery equipment, never heat cylinders with open flame, and have a refrigerant leak detector available (Correct answer)
- Only wear a hard hat
- Only work outdoors
Correct answer: Work in well-ventilated areas, wear safety glasses and gloves, use proper recovery equipment, never heat cylinders with open flame, and have a refrigerant leak detector available
Refrigerant safety precautions include: work in well-ventilated areas (refrigerants displace oxygen and some decompose into toxic gases near flames), wear safety glasses (liquid refrigerant causes frostbite on contact), wear gloves, never use open flames to heat cylinders, monitor for leaks with proper detectors, and know the SDS for each refrigerant.
Question 6: What is the GWP (Global Warming Potential) of R-410A and why is this significant for the Canadian HVAC industry?
- GWP of 1; it has no environmental impact
- GWP of approximately 2,088; it is being phased down under the Kigali Amendment and Canadian HFC regulations, requiring transition to lower-GWP alternatives (Correct answer)
- GWP of 10; it is considered low impact
- GWP of 100; it is only significant in industrial applications
Correct answer: GWP of approximately 2,088; it is being phased down under the Kigali Amendment and Canadian HFC regulations, requiring transition to lower-GWP alternatives
R-410A has a GWP of approximately 2,088 (meaning it traps 2,088 times more heat than COâ‚‚ over 100 years). Canada has ratified the Kigali Amendment to phase down HFC production and consumption. The HVAC industry is transitioning to lower-GWP alternatives like R-32 (GWP 675) and R-454B (GWP 466) in new equipment.
313A Refrigerant Handling
Under Canadian regulations (Environmental Protection Act and provincial codes), what certification is required to purchase and handle refrigerants?