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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. Pentafluoroethane - Wikipedia

    en.wikipedia.org/wiki/Pentafluoroethane

    [4] [5] When introduced to the market HFC-125 was not considered safe for use in occupied spaces. The US EPA Significant New Alternative Policy (SNAP) listing reflected this. Following the introduction and acceptance of the PBPK model in the NFPA standard 2001 on Clean Agent Fire Extinguishing Systems 2004 Edition, the restriction was relaxed ...

  6. 2,3,3,3-Tetrafluoropropene - Wikipedia

    en.wikipedia.org/wiki/2,3,3,3-Tetrafluoropropene

    HFO-1234yf was developed by a team at DuPont, led by Barbara Haviland Minor, jointly with researchers at Honeywell. [8] [9] Their goal was to meet European directive 2006/40/EC, which went into effect in 2011 and required that all new car platforms for sale in Europe use a refrigerant in its AC system with a global warming potential (GWP) less than 150 times more potent than carbon dioxide.

  7. 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 ...

  8. New EPA rules subject Georgia Power to severe emissions ...

    www.aol.com/epa-rules-subject-georgia-power...

    The U.S. Environmental Protection Agency on Thursday finalized regulations requiring new gas-fired generating facilities to prevent at least 90% of resulting carbon dioxide emissions from escaping ...

  9. New EPA rule to reduce methane emissions mirrors regulations ...

    www.aol.com/epa-rule-reduce-methane-emissions...

    Dec. 5—A new federal environmental rule aiming to reduce methane emissions produced by the oil and gas industry bears a resemblance to standards New Mexico enacted in recent years.

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