Core (Universal)Câu 9 / 240
As of January 1, 2020, what happened to R-22 (HCFC-22) in the United States?
a.Its production and import were banned, so only recovered, recycled, or reclaimed supplies remain
b.It became legal to vent it freely to the atmosphere
c.It was reclassified as a natural refrigerant
d.It was required in all new residential air conditioners
Giải thích
Beginning January 1, 2020, it became illegal to produce or import R-22 in the United States, so servicing older R-22 equipment now depends on recovered, recycled, or reclaimed supplies. Venting R-22 remains illegal, it was never a natural refrigerant, and new systems use non-ozone-depleting refrigerants. The phaseout follows the Montreal Protocol schedule for HCFCs.
Luyện miễn phí toàn bộ 240 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- A supplier tells a technician that R-410A has an ODP of zero but a high GWP. What does GWP measure?
- Which of the following refrigerants is a CFC that has already been phased out of production?
- R-22 is best classified as which type of refrigerant?
- The AIM Act of 2020 directs EPA to phase down the production and consumption of which class of refrigerants?
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- What is the difference between recycling and reclaiming refrigerant?
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