Download EPA 608 9th edition Question And Answers 2024-2023 and more Exams Nursing in PDF only on Docsity!
Reusable refrigerant containers under high-pressure must be hydrostatically tested how often? - Correct Answer ✅ 5 years How much can a person be fined per day per violation for knowingly releasing a regulated substance that violates the Clean Air Act? - Correct Answer ✅ $44, HCFCs contain - Correct Answer ✅ Hydrogen, Chlorine, Fluorine, and Carbon Which of the following refrigerants is an HFO? - Correct Answer ✅ R- 1234ze An ozone molecule contains; - Correct Answer ✅ Three oxygen atoms Purity specification of new, recycled, or reclaimed R-134a must meet this standard: - Correct Answer ✅ AHRI Standard 700 For determining the Ozone Depletion Potential, ________ having been assigned a factor of 1. - Correct Answer ✅ CFC- Ozone Depletion Potential (ODP) is a measurement of a substance such as CFC's and HCFC's
ability to destroy ozone, and ranges from - Correct Answer ✅ 0 to 1 Equipment with flammable refrigerants requires a _________ color marking on all process tubes, service connections, and pipes through which a flammable refrigerant passes - Correct Answer ✅ RED Several years of negotiations, an international agreement (treaty) regulating the production and use of CFCs, HCFCs, halons, methyl chloroform and carbon tetrachloride entered into force in mid-1989 resulted in what agreement - Correct Answer ✅ The Montreal Protocol Remove refrigerant, in any condition, from a system and store it in an external container to be put back into the same system - Correct Answer ✅ Recover Clean refrigerant by separating the oil from the refrigerant and removing moisture and other contaminants from the refrigerant by passing it through one or more filter driers is called what - Correct Answer ✅ Recycle:
grocery stores, warehouse clubs, supercenters, convenience stores, and refrigerated transport. - Correct Answer ✅ Commercial Refrigeration, these are examples of: air conditioning equipment, and others not listed. - Correct Answer ✅ Comfort Cooling, when dehydrating a system a vacuum of how many microns should be reached? - Correct Answer ✅ 500 The EPA requires that a refillable refrigerant cylinder MUST NOT BE FILLED ABOVE _______of its capacity by weight - Correct Answer ✅ 80% When leak checking a system, NEVER pressurize the system with - Correct Answer ✅ oxygen or compressed air In the event of a "large" release of refrigerant in a confined area, ______________________________ is required - Correct Answer ✅ Self- Contained Breathing Apparatus (SCBA)
Always review the ________________________ when working with any solvents, chemicals, or refrigerants. - Correct Answer ✅ Safety Data Sheets (SDS) Before shipping any used refrigerant cylinders, check that the cylinder meets ______ standards. - Correct Answer ✅ DOT R-502 is a ______________ pressure refrigerant - Correct Answer ✅ HIGH If a new recovery system purchased, the purchaser must report this information to the EPA. T/F - Correct Answer ✅ False Appliances can be evacuated to atmospheric pressure ____________ if leaks make recovery (evacuation) to the prescribed level unattainable. - Correct Answer ✅ 0 PSIG System-dependent recovery equipment cannot be used on appliances containing more than ___________________of refrigerant. - Correct Answer ✅ 15 pounds REQUIRED LEVELS OF EVACUATION FOR
After recovery, refrigerant may be returned to the appliance from which it was removed or to another appliance owned by the same person without being recycled or reclaimed. T/F - Correct Answer ✅ True REQUIRED LEVELS OF EVACUATION FOR Medium-pressure appliance, or isolated component of such appliance, with a full charge of 200 lbs. or more of refrigerant. Before November 15, 1993 - Correct Answer ✅ 4" Hg Refrigerant should be removed from the condenser outlet if the condenser is _________ the receiver - Correct Answer ✅ Below If you are recovering the refrigerant from a system and worried about loosing to much oil from the system, what state should the refrigerant be in when you remove it from the system. - Correct Answer ✅ vapor REQUIRED LEVELS OF EVACUATION FOR Medium-pressure appliance, or isolated component of such appliance, with a full charge of 200 lbs. or more of refrigerant. After November 15, 1993 - Correct Answer ✅ 15" Hg
Technicians working with multiple refrigerants, before recovering and/or recycling a different refrigerant, must __________ the recover/recycle equipment by recovering as much of the first refrigerant as possible, change the filter, and evacuate. - Correct Answer ✅ purge Removing the refrigerant in what form will speed up recovery time. - Correct Answer ✅ liquid When an appliance containing 50 lbs. of a regulated refrigerant or more leaks_________% or more, the owner must submit a report to EPA describing efforts to identify leaks and repair. - Correct Answer ✅ 125 REQUIRED LEVELS OF EVACUATION FOR High-pressure appliance, or isolated component of such appliance, with a full charge of less than 200 lbs. of refrigerant. Before November 15, 1993 - Correct Answer ✅ 0" Hg All records for leak inspections, initial verification, verification tests and records of recovered refrigerant from equipment with 5 to 50 lbs. must be kept
likely to leak from the ___________________________. - Correct Answer ✅ rotating shaft seal. Technicians maintaining, servicing, repairing or disposing of high- pressure to very highpressure appliances, except small appliances and motor vehicle air conditioning systems (MVAC), must be certified as - Correct Answer ✅ Type II Technician or a Universal Technician. Type II appliances that will not be repaired must be retrofitted or retired in _______________. - Correct Answer ✅ 12 months REQUIRED LEVELS OF EVACUATION FOR Very high-pressure appliance Before November 15, 1993 - Correct Answer ✅ 0" Hg When one appliance is used for both industrial process refrigeration and other applications, it will be considered industrial process refrigeration equipment when____________ or more of its operating capacity is used for industrial process refrigeration. - Correct Answer ✅ 50% Required Level of Evacuation for High-pressure appliance, or isolated component of such appliance, with a full charge of less than 200 lbs. of refrigerant Before November 15, 1993 - Correct Answer ✅ 0" Hg
REQUIRED LEVELS OF EVACUATION FOR Low-pressure appliance Before November 15, 1993 - Correct Answer ✅ 25 mm Hg Absolute Technicians maintaining, servicing, repairing or disposing of low- pressure appliances must be certified as - Correct Answer ✅ Type III Technician or a Universal Technician The _________________________ of the equipment is responsible for keeping records of all leak inspections and any completed leak repair verification tests - Correct Answer ✅ Owner and/or operator As of ______________________, the sale of CFC and HCFC refrigerants is restricted to certified technicians. - Correct Answer ✅ November 14, 1994 Low-pressure systems are semi-hermetic and operate - Correct Answer ✅ below atmospheric pressure / in a vacuum
ASHRAE code classification for refrigerants CFC-12, CFC-11, and HFC- 134a are grouped as: - Correct Answer ✅ A- Class ________signifies refrigerants for which toxicity has NOT been identified at concentrations less than or equal to 400 ppm - Correct Answer ✅ A Class ______ signifies refrigerants for which there is evidence of toxicity at concentrations below 400 ppm - Correct Answer ✅ B To protect the system from over-pressurization, low-pressure chillers typically use a rupture disc mounted on the evaporator housing. The typical design burst pressure for a rupture disc is - Correct Answer ✅ 15 psig High discharge pressure is an indication of__________________ in the system - Correct Answer ✅ AIR A centrifugal chiller's purge unit takes its suction from the top of the ____________________, separates air and other non-condensables from the refrigerant, and then returns
the refrigerant back to the evaporator. - Correct Answer ✅ condenser Low-pressure chillers using refrigerants such as R-123 operate below atmospheric pressure, require a______________________. - Correct Answer ✅ purge unit If a strong odor is detected during the recovery process, a ______________________ may have occurred. - Correct Answer ✅ compressor burn-out Recovery or recycling equipment manufactured or imported before or after _____________________, must be able to achieve a recovery level of 25 mm Hg absolute - Correct Answer ✅ Nov. 15, 1993 Low-pressure refrigeration systems with refrigerants such as R- require a vapor pressure equal to a saturation temperature of__________. or higher, to prevent freezing - Correct Answer ✅ 36 ° F Refrigerant is added through the lowest access point on the system such as the __________________ charging valve. - Correct Answer ✅ evaporator
REQUIRED LEVELS OF EVACUATION FOR Medium-pressure appliance, or isolated component of such appliance, with a full charge of less than 200 lbs. of refrigerant Before November 15, 1993 - Correct Answer ✅ 4" Hg The deadline to replace or retrofit an appliance can be extended when a certified service technician is not available to do the work T/F - Correct Answer ✅ False An initial leak-test verification must be performed within ___________ of an appliance exceeding the applicable leak rate - Correct Answer ✅ 30 days A low-pressure appliance leaking above the leak rate threshold must be repaired so that it leaks below the threshold and the initial verification test conduct within ___________unless granted additional time - Correct Answer ✅ 30 days REQUIRED LEVELS OF EVACUATION FOR Low-pressure appliance After November 15, 1993 - Correct Answer ✅ 25 mm Hg absolute REQUIRED LEVELS OF EVACUATION FOR Very high-pressure appliance After
November 15, 1993 - Correct Answer ✅ 0" Hg
