Study Guide
Lesson 4/52Free

Clean Air Act & Montreal Protocol

Learn about the key laws and treaties that regulate refrigerants and ozone-depleting substances.

5m read

The Montreal Protocol (1987)

The Montreal Protocol is an international treaty signed in 1987 designed to protect the ozone layer by phasing out the production and consumption of ozone-depleting substances. It has been ratified by every country in the United Nations and is considered one of the most successful environmental treaties in history.

The Montreal Protocol (1987) is an international treaty to phase out ozone-depleting substances, ratified by every UN country.

The Clean Air Act & Section 608

The Clean Air Act is a U.S. federal law that regulates air emissions, including refrigerant handling. Title VI of the Clean Air Act specifically addresses stratospheric ozone protection. Section 608 governs the handling of refrigerants in stationary refrigeration and air conditioning equipment, establishing technician certification, venting prohibitions, and recovery requirements.

Section 608 of the Clean Air Act regulates stationary refrigeration equipment, requiring technician certification and prohibiting venting.

Phaseout Timeline

CFC production endedJanuary 1, 1996
HCFC (R-22) production endedJanuary 1, 2020
Kigali Amendment targetsHFC phasedown (reducing production)
Montreal Protocol signed1987
Section 608 applies toStationary refrigeration equipment

The Kigali Amendment

The Kigali Amendment (2016) to the Montreal Protocol extends its scope to include HFC refrigerants. While HFCs have zero ODP, they have very high Global Warming Potential. The amendment establishes a phasedown schedule to reduce HFC production and consumption, promoting the transition to lower-GWP alternatives.

The Kigali Amendment extends the Montreal Protocol to phase down HFCs due to their high Global Warming Potential.

Laws & Treaties Review

  • The Montreal Protocol (1987) is an international treaty phasing out ozone-depleting substances.
  • The Clean Air Act is U.S. law; Section 608 covers stationary refrigeration equipment.
  • CFCs were phased out in 1996; HCFC R-22 production ended January 1, 2020.
  • The Kigali Amendment extends Montreal Protocol to phase down high-GWP HFCs.