EPA Core

Question 1

Chlorine

Answer 1

The element of a CFC or HCFC molecule that causes ozone depletion. The chlorine in CFC’s and HCFC’s will not dissolve in water or easily break down in the atmosphere. Each chlorine atom in the stratosphere can destroy 100,000 ozone molecules.

Question 2

Stratospheric Ozone

Answer 2

Helps form the earth’s protective shield. CFC and HCFC refrigerants damage stratospheric ozone. One of the most serious results of damage to the stratospheric ozone layer is increased rates of skin cancer in humans. Other human health effects from damage to the stratospheric ozone layer include increased cases of cataracts. Environmental effects of stratospheric ozone depletion include decreased crop yields and damage to marine organisms. Chlorofluorocarbon (CFC and hydrochlorofluorocarbon (HCFC) use in the US is being phased out to stop damage to the ozone layer. R-22 is an example of a refrigerant that damages the ozone layer.

Question 3

ODP

Answer 3

Ozone Depletion Potential. The ability of a substance to destroy ozone in the stratosphere. CGC have the highest ODP.

Question 4

GWP

Answer 4

Global Warming Potential. Provides a comparison of lobal warming impacts of different gases over a span of time. T-600a (an HC) has a low GWP, while the GW of R-410a compared to carbon dioxide is thousands of times greater.

Question 5

CO2

Answer 5

Carbon Dioxide. Used a the baseline measuremtnt for global warming potential (GWP)

Question 6

Snap

Answer 6

Significant New Alternatives Policy Program. EPA’s program that identifies refrigerants with lower overall risks to human health and the environment.

Question 7

Montreal Protocol

Answer 7

An international treaty that addresses ozone depleting substances and their alternatives.

Question 8

$44,539

Answer 8

The amount per day, per violation a technician can be fined for violating the clean air act including knowingly releasing non-exempt refrigerant from appliances.

Question 9

A2L

Answer 9

ASHRAE refrigerant safety classification. An A@L indicates lower flammability.

Question 10

Reclaim

Answer 10

The process that returns refrigerant to new product specifications and requires chemical analysis.

Question 11

compressor

Answer 11

Refrigerant system component that changes a low pressure vapor to a high pressure vapor. The state of the refrigerant entering the compressor is a low pressure vapor. refrigerant enters the compressor of a refrigeration system as a superheated vapor.

Question 12

500 microns

Answer 12

The minimum evacuation level that should be achieved in most refrigeration systems before charging the system.

Question 13

Gauge Manifold Set

Answer 13

The color of the low pressure gauge on a typical guage manifold set is blue. The color of the high pressure guage on a typical guage manifold set is red.

Question 14

Polyolester Oil

Answer 14

A synthetic oil commonly used in new HFC systems and for retrofitting HCFC equipment to HFC refrigerants.