epa 608 universal actual exam 2024 with 100% correct answers(download to pass)

Lose their EPA certification, be fined, be required to appear in Federal court. Refrigeration technicians who violate the Clean Air Act can: - recovery and recycling. After 1995, any supplies of CFC refrigerants to service existing units in the USA can only come from: - the same system or other systems owned by the same person without restriction. Refrigerant that is recovered can be returned to: - has been chemically analyzed and the refrigerant meets the ARI-700 standard. Refrigerant can not be called "reclaimed" unless it: - . revocation of the technicians certification. The EPA can require a technician to demonstrate their ability to perform proper procedures for recovering and/or recycling refrigerant. Failure to demonstrate competency can result in: - Refrigerants that contain chlorine but not hydrogen are so stable that they do not break down in the lower atmosphere after being released. The chlorine or bromine reacts with the ozone, causing it to change back to oxygen, thus destroying the ozone layer. What characteristic(s) of CFCs make them more likely to reach the stratosphere than most other compounds containing chlorine? - the vacuum indicator shows you have reached and held the required finished vacuum. A system is considered dehydrated when: - virgin refrigerant Disposable refrigerant containers are used for ______ R-123, R-124, R-22 Which refrigerant is an HCFC? - It is a mixture that acts like a single-component refrigerant over its entire range. What statement is true about an azeotropic refrigerant mixture? - It is a mixture that acts like a single-component refrigerant over its entire range. Chlorofluorocarbos (CFCs) and hydrochlorofluorocarbons (HCFCs) have which of the following in common? - 0 psig. To scrap a disposable cylinder, the internal cylinder pressure should be reduced to at least: - Manifold gauge sets are often color coded, when this is done, the high pressure gauge is color coded: - Red. as a liquid. In general, blended refrigerants should be charged: - in uneven amounts due to different vapor pressures. Blended refrigerants leak from a system: - Which of the following gases help form the earth's protective shield? - Stratospheric Ozone In a refrigerant system, the device that changes a low pressure vapor to a high pressure vapor is the: - compressor. Data shows that chlorine in the stratosphere comes mainly from CFCs rather than from natural sources such as volcanoes because: - The rise in the amount of chlorine in the stratosphere matches the rise in the amount of fluorine, which has different natural sources than chlorine; The rise in the amount of chlorine in the stratosphere matches the rise in CFC emissions; Air samples taken from the stratosphere over erupting volcanoes show that volcanoes contribute a small quantity of chlorine to the stratosphere when compared to CFCs; Which atom of the CFC molecule causes ozone depletion? - chlorine The ozone layer protects the earth from: - ultraviolet radiation from the sun. When using with any solvent, cleaner, chemical or refrigerant, you should review: - material safety data sheets. An award of up to what amount may be paid to a person supplying information that leads to a penalty against a technician who is intentionally venting? - 10,000 The Montreal Protocol is: - a treaty among nations that controls production of CFCs and HCFCs. Which refrigerant is an HCFC? - R-123, R-22, R-124 What is one of the most serious results of damage to the ozone layer? - increases in human skin cancer Of the refrigerants listed below, which has the lowest ozone depletion potential (ODP)? - R-22 To determine the maximum allowable pressure to use when checking a system, check: - the design pressure on the equipment nameplate Ozone depletion potential, or "ODP," is: - A measure of the ability of CFCs and HCFCs to destroy ozone.