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2. Significant New Alternatives Policy - Wikipedia

   en.wikipedia.org/wiki/Significant_New...

   Originally, Section 612 was limited by ozone-depleting chemicals. However, after passing regulations to phase-out R134a, an HFC refrigerant with no ozone-depleting potential, this phase-out was defended by a subsidiary of DuPont siding with the EPA as it was challenged by a major manufacturer of R134a, and was struck down in 2017. This decision ...

3. Section 608 - Wikipedia

   en.wikipedia.org/wiki/Section_608

   EPA regulations require the test to be a "closed book" proctored exam. The only outside materials allowed are a temperature / pressure chart, scratch paper and a calculator. The certification exam contains 4 sections: Core, Type I, Type II, and Type III. Each section contains 25 multiple choice questions.

4. R-454B - Wikipedia

   en.wikipedia.org/wiki/R-454B

   Because of its reduced global warming potential (GWP), R-454B is intended to be an alternative to refrigerant R-410A in new equipment. [2] [3] [4] R-454B has a GWP of 466, which is 78 percent lower than R-410A's GWP of 2088. [2] R-454B is non-toxic and mildly flammable, with an ASHRAE safety classification of A2L. In the United States, it is ...

5. Environmental policy of the first Donald Trump administration

   en.wikipedia.org/wiki/Environmental_policy_of...

   In January 2018, the EPA formally suspended the 2015 regulation and announced plans to issue a new version later in 2018. [138] Fifteen states, two cities and several environmental organizations have challenged EPA's suspension in several lawsuits. [139] [140] On September 12, 2019, the Trump administration repealed the Clean Water Rule. [17] [141]

6. trans-1,3,3,3-Tetrafluoropropene - Wikipedia

   en.wikipedia.org/wiki/Trans-1,3,3,3-tetrafluoro...

   trans-1,3,3,3-Tetrafluoropropene (HFO-1234ze(E), R-1234ze(E)) is a hydrofluoroolefin.It was developed as a "fourth generation" refrigerant to replace fluids such as R-134a, as a blowing agent for foam and aerosol applications, and in air horns and gas dusters. [3]

7. National Emissions Standards for Hazardous Air Pollutants

   en.wikipedia.org/wiki/National_Emissions...

   The National Emission Standards for Hazardous Air Pollutants (NESHAP) are air pollution standards issued by the United States Environmental Protection Agency (EPA). The standards, authorized by the Clean Air Act, are for pollutants not covered by the National Ambient Air Quality Standards (NAAQS) that may cause an increase in fatalities or in serious, irreversible, or incapacitating illness.

8. New EPA rule says 218 US chemical plants must reduce toxic ...

   www.aol.com/news/epa-rule-says-200-us-130057398.html

   The new rule will slash more than 6,200 tons (5,624 metric tonnes) of toxic air pollutants annually and implement fenceline monitoring, the EPA said, addressing health risks in surrounding ...

9. Kigali Amendment - Wikipedia

   en.wikipedia.org/wiki/Kigali_Amendment

   The Kigali Amendment to the Montreal Protocol is an international agreement to gradually reduce the consumption and production of hydrofluorocarbons (HFCs). It is a legally binding agreement designed to create rights and obligations in international law.