EPA 608 CORE with 100% correct answers 2024 latest update

Dont disolve iin water What characteristic or characteristics of CFCs make them more likely than other chlorine compounds to reach the stratosphere? 100,000 ozone molecules Each chlorine atom in the stratosphere can destroy how many ozone molecules? Theyre all CFC's Which refrigerant contains a CFC? R500, R12, R113 or R11? Hydrogen, chlorine, flourine and carbon HYDROCHLORIC FLORICCARBON (HCFC) refrigerant contain? HFC R 134A Which refrigerant is a chlorine free refrigerant? Increases in human skin cancer What is the result damage to the ozone layer? -) The rise in the amount of chlorine measured in the stratosphere over the past 2 decades matches the rise of chlorine which has different natural sources of chlorune overthe same period -) The rise of chlorine in the statosphere matches the rise in CFCs over the same period -) samples of air taken over erupting volcanoes shows that volcanoes contribute a small amount of chlorine in the stratosphere compared to CFCs -) ALL OF THE ABOVE According to the EPA, chlorine in the stratosphere is believed to come primarily from the CFCs rather than from volcanoes because -) falsifying or failing to keep required records -) failing to keep evacuation levels before opening or disposing of appliances -) knowingly releasing HFC's, HCFCs or CFC refrigerants -) ALL OF THE ABOVE Which is a violation of the EPA clean air act? Assuring that all refrigerant is recovered and that the cylinders are rendered useless then recycle the metal Discarding of disposable cylinders is accomplished by $10,000 How much money can be awarded to a person who supplies information leading to a conviction against the technician who is intentionally venting refrigerants or violatingsome other provision of the EPA CLEAN AIR ACT 1995 CFC's will no longer be manufactured or imported into the U.S. after what year? Knowingly releasing HCF or HCFC refrigerants in the U.S. Since July 1, 1992 it has been illegal to: -) chloric floric carbons -) hydro chloric carbons -) halons -) all of the above Which compounds are controlled by the Montreal protocol? Any refrigerant or refrigerant substitute EPA regulations cover all AC and refrigeration equipment when containing what? Alcobenzine The syntetic substitute currently usedwith blends containing HCFCs is: The mixture combines to act as a single compound refrigerant What is the significance of atheotropic mixture: Refrigerant liquid boils into a vapor Cooling occurs in a vapor compression refrigeration system when: Its a GLOBAL problem Ozone depletion in the stratosphere is what type of problem: To remove refrigerant in any condition from a system and store it an external container without neccesarily testing it The definition of recover is: Electronic ultrasonic testers Which of the following leak detection methods is considered by the EPA to be the effective for locating the general area of small leaks? Slow the recovery process Recovery during low ambient temperatures will: Decrease dehydration time During dehydration of a refrigeration system the refrigeration system is heated to: Low side test data plate value To determine the safe pressure for leak testing one should use: The internal pressure of the cylinders may rise and cause an explosion Care should be used to avoid over filling refrigerant storage cylinders because: attach DOT classification tags When transporting cylinders containing used refrigerants DOT REQUIRES that you: The mixture combines to act like a single component refrigerant What is the significance of an azeotropic mixture? They are chemically very stable CF Cs are more likely to reach the stratosphere than other chlorine-containing compounds because___________. Chlorine, fluorine and carbon Chlorofuorocarbons, or CFCs, consist ofwhich of the following chemicals? CFCs Which compound are the most damaging to the stratospheric ozone layer and have the highest ozone depletion potential rating? Electronic and ultrasonic ________ test methods are assumed by the EPA as the most effective methods for locating the general area of small leaks. Agree to destroy the refrigerant but typically a substantial fee is charged If a reclamation company is shipping a cylinder containing mixed refrigerants they may ______. 100,000 One chlorine atom in the stratosphere is capable of destroying how many ozone molecules? R-502 ________is a CFC. A) R-141b B) R- 134a C) R-502 D) R-123 Less HCFC refrigerants cause ____________ damage to the stratospheric ozone layer in comparison to CFC refrigerants. As far as possible from the vacuum pump. The system vacuum gauge should be connected __________? 1995 Manufacture of CFCs was banned as of December 31, _______? A) 1994 B) 1995 C) 2000 D) 2010 Measurements of CFCs in air samples taken from the stratosphere Positive evidence that CFCs are in the stratosphere comes from ____________? ARI 700 Under EPAs regulations reclaimed refrigerant must meet standards for purity before it can be resold System-dependent ________recovery devices are so named because they depend on components of the system. That is, they capture refrigerant with the assistance of components in the air conditioning or refrigeration equipment they are emptying EPA All devices used for refrigerant recovery must meet___________standards. R-22 An example of an HCFC refrigerant: HFCs Which of the refrigerants listed below contain no chlorine? A) CFCs B)HCFCs C) HFCs D) ODCs R-134a Which refrigerant is an HFC? A) R-123 B) R- 134a C) R- 11 D) R- 2