EPA Core One Exam With Accurate Questions & Answers!!

Refrigerant cylinders should - ANSWER Be free of rust and damage Be color-coded be secure All the above Which refrigerants must be recovered before opening or disposing of appliances - ANSWER R-12 R-22 R-500 All of the above R-134a refrigerant charged systems should be leak checked with - ANSWER Pressurized nitrogen Which chemicals are controlled by the Montreal protocol - ANSWER Chlorofluorocarbons hydrochlorofluorocarbons Halons All of the above The oils that will be employed with most of the HFC-134a refrigeration applications are - ANSWER Esters Service technicians who violate clean air act provisions - ANSWER May be fined May lose certification may be required to appear in federal court All of the above The ozone layer protects the earth from - ANSWER Ultraviolet radiation from the sun Disposing of disposable cylinders is accomplished by - ANSWER Assuring that all refrigerant is recovered and at that the cylinders are rendered useless than recycling the metal Recovery of refrigerants is necessary for - ANSWER Adequate supplies for service after production bans Prevention of venting to the atmosphere Prevention of stratospheric ozone depletion All the above Recovery equipment that relies upon the compressor in the appliance and or the pressure of the refrigerant in the appliance would be considered - ANSWER System dependent What is the strongest evidence that CFCs are in the stratosphere - ANSWER Measurement of CFCs in the air samples from the stratosphere Which of the following CFC or HCFC refrigerant releases is considered a violation of the prohibition On venting - ANSWER Release of mixtures of nitrogen and refrigerant that result from adding nitrogen to a fully charged appliance to leak check the appliance Self contained recovery devices - ANSWER Can capture liquid and or vapor refrigerant without the assistance of components in the air conditioning or refrigeration equipment Systems to be charged with R-134A should be leak checked with - ANSWER Pressurized nitrogen Violation of the clean air act including the knowing release of refrigerant during the maintenance service repair or disposal of appliances can result in fines up to - ANSWER $25,000 per day per violation EPA may require technicians to demonstrate their ability to perform proper procedures for covering and/or recycling refrigerant. Failure to demonstrate or failure to properly use the equipment may result in - ANSWER Revocation of the technicians certification EPA regulations require the installation of the service aperture or process stub on all appliances using a class I or class II substance as a refrigerant. The main purpose of this requirement is to make it easier to - ANSWER Recover refrigerant Which of the following is a high-pressure refrigerant under EPA's refrigerant recycling regulations - ANSWER R-12 Ozone depletion in the stratosphere is what type of problem - ANSWER Global The term used to describe the fact that a refrigerant blend has a range of boiling or condensing points in a constant temperature is - ANSWER Temperature glide Vacuum lines (hoses) should be - ANSWER Equal to or larger than pump intake connection Which of the following is a low-pressure refrigerant under EPA's refrigerant recycling regulations - ANSWER R-123 Ozone depletion potential or ODP is - ANSWER A measurement of CFCs and HCFCs ability to destroy ozone All recovery equipment now manufactured is required to have - ANSWER An EPA approved certification label A refrigerant oil that is hygroscopic - ANSWER Readily absorbs moisture And example of an HFC refrigerant is - ANSWER R-134a The smallest container in which refrigerant may be sold to section 608 certified technicians is - ANSWER 20 lb. Recovery equipment that relies upon the compressor in the appliance and or the pressure of the refrigerant in the appliance would be considered - ANSWER System dependent Hydrochlorofluorocarbon HCFC refrigerant contain - ANSWER Hydrogen chlorine fluorine in carbon