EPA 608 Core Exam Questions & Answers 2024

Where is the stratosphere? - 10 to 30 miles Where is ozone located? - stratosphere What does an ozone molecule consist of? - 3 oxygen atoms The ozone layer protects us from... - ultraviolet radiation The ozone layer helps to maintain... - stable earth temperatures Depletion of ozone causes... - crop loss, eye disease, skin cancer, reduced marine life, deforestation, increased ground level ozone. What type of refrigerants, when released into the atmosphere, cause ozone depletion? - cfcs and hcfcs What in refrigerants causes ozone depletion? - chlorine What compound is formed when chlorine meets ozone? - chlorine monoxide How many ozone molecules can be destroyed by one chlorine atom? - 100,000 The rise in the amount of chlorine measured in the stratosphere over the past twenty years matches the rise in... - flourine The chlorine in CFCs will break down in water(true/false). - false The chlorine in CFCs will break down into compounds that will dissolve in water(true/false). - false What does ODP stand for? - ozone depletion potential HFCs have a higher ODP than CFCs (true/false). - false Which refrigerant type has no ODP? - HFCs What chemicals make up CFCs? - chlorine flourine carbon What chemicals make up HCFCs? - hydrogen chlorine fluorine carbon What chemicals make up HFCs? - hydrogen fluorine carbon Give examples of CFCs? - r-11, 12, 500 Give examples of HCFCs? - r-22, 123 Give examples of HFCs? - r-134a Who regulates section 608 of the clean air act? - epa How much is the fine for releasing refrigerant into the atmosphere? - 27,500 per day per violation. What is the bounty for turning someone in? - up to 10,000 Who gets fined? - you and your company Can the EPA require you to demonstrate the ability to properly perform refrigerant recovery/recycling duties? - yes What can happen if you cannot properly perform recovery/recycling? - revocation of certification To falsify or {BLANK} required records will get your certification revoked. - fail to keep Failure to reach {BLANK} prior to opening or disposing of appliances will get your certification revoked. - required evacuation rates Knowingly releasing HCFCs, CFCs, or HFCs while repairing appliances, with the exception of {BLANK} releases will get your certification revoked. - de-minimus Whose responsibility is it to ensure that refrigerant has been removed from appliances before disposal? - final person in the disposal chain Since what date has it been illegal to service, maintain or dispose of appliances without being appropriately certified? - november 14th, 1994 Since what date has it been illegal to vent CFCs or HCFCs? - july 1st, 1992 Since what date has it been illegal to vent HFCs? - november 15th, 1995 Failure to {BLANK} refrigerant before opening or disposing of an appliance will get your certification revoked. - recover Who has to approve a recovery device? - epa A recovery device must have what type of fittings? - low loss A recovery device must be registered with the EPA(true or false) - true You can only add nitrogen to a system if it is ... - empty What steps must be taken to dispose of a disposable cylinder? - recover to 0 psi, render useless, recycle the metal. When did the Montreal Protocol go into effect? - mid 1989 What date were CFCs phased out? - december 31st, 1995 Recovery equipment manufactured after what date must be certified and labelled by the EPA? - november 15th, 1993 What are the 2 types of recovery equipment? - system-dependent and self- contained What type of recovery device captures refrigerant with the assistance of components in the appliance? - system-dependent What type of recovery device has its own means to draw refrigerant out of the appliance? - self-contained What date did it become mandatory for buyers of CFCs and HCFCs to be certified technicians? - november 14th, 1994 Which section of the clean air act do technicians need to be certified in order to purchase refrigerant in amounts smaller than 20lbs? - 609 motor vehicle air conditioning Which type of refrigerant is considered ozone frielndly? - hfc What type of refrigerant is r-134a? - hfc Which refrigerant is generally used to replace r-12? - r-134a What type of oil is used in an r-134a system? - esters Can esters be mixed with other oils? - no What do we call a 3-part blend? - ternary What type of oil is used with ternary blends? - alkyl benzene What type of oil has a high affinity for water? - hygroscopic Why will the components of a refrigerant blend leak at different rates? - different vapor pressures Do you charge a system with a blended refrigerant in the high side or the low side? - high side Do you charge a vapor blend in liquid form or vapor form? - liquid What is the term used for a refrigerant blend that has multiple boiling points and condensing points? - temperature-glide What is the term for a refrigerant blend that does not have temperature-glide? - azeotropic A service aperture or stub is required on all equipment of what types? - Class I and class II What must you do if you discover that two or more refrigerants have been mixed in a system? - recover the mixture into a separate tank