1. Lifetime of CFCs:
- CFCs are believed to have a lifetime ranging from ✔️ 2 to 100 years.
2. Ozone Depletion Potential:
- For determining the Ozone Depletion Potential, ✔️ CFC-11 has been assigned a factor of 1.
3. Ester-based Synthetic Oils:
- ✔️ False. Ester-based synthetic oils cannot be mixed with other oils.
4. Legal Status of CFCs:
- Since ✔️ January 1, 1996, it is no longer legal for CFCs to be manufactured or imported into the
United States.
5. Venting Substitutes:
- Since ✔️ November 15, 1995, it is illegal to vent substitutes for CFC and HCFC refrigerants.
6. Ozone at Different Levels:
- ✔️ False. Ozone at ground level is a harmful pollutant, but at the stratosphere, it protects against UV
radiation.
7. Refillable Refrigerant Cylinder Capacity:
- A refillable refrigerant cylinder must not be filled above ✔️ 80% of its full capacity.
8. Chlorine Ions and Ozone:
- Each chlorine ion can destroy ✔️ 100,000 ozone molecules.
, 9. R-134a Status:
- R-134a is a chlorine-free refrigerant. ✔️ True.
10. Evacuation for MVAC Systems:
- MVAC systems being disposed of must be evacuated to ✔️ 4 inches of mercury before being
scrapped.
11. Ozone Layer Protection:
- The ozone layer absorbs and scatters ✔️ ultraviolet light from the sun.
12. Whistleblower Award:
- An award of up to ✔️ $10,000 may be paid to a person supplying information that leads to a
penalty against a technician intentionally venting refrigerants.
13. Pressure Relief Device Requirement:
- ✔️ False. Every refrigerant cylinder must be protected by some type of pressure relief device.
14. Ozone Molecule Composition:
- An ozone molecule consists of ✔️ three atoms of oxygen.
15. Reactivity of CFCs:
- CFCs are highly reactive in the ✔️ lower level of the atmosphere.
16. Certification for R-22 (HCFC) systems:
- Over-the-road refrigeration units and R-22 air conditioning found in buses require Section ✔️ 608
certification.
17. Stratospheric Ozone Presence:
- The stratosphere layer consists of about ✔️ 90% of the available ozone.