ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: Methyl Chloride is a halogenated refrigerant and should not come in contact with

  • aluminum
  • zinc
  • magnesium
  • all of the above

2: A pressure relief should be located at least _______ from windows and doors.

  • 30'
  • 15'
  • 20'
  • 25'

3: How far from the ground does a relief valve need to be?

  • Not more than 3' above grade
  • At least 20' above grade
  • At least 25' above grade
  • At least 15' above grade

4: The 522 CMR 9.00 has adopted for reference ASHRAE ____

  • 15
  • III
  • 25
  • 10

5: A 3-cubic foot receiver must have what type of relief valve?

  • fusible plug
  • relief valve
  • rupture device
  • none of the above

6: Before you change the type of refrigerant in a refrigeration system, what three things must be done?

  • make sure it's compatible, notify owner, notify A.H.J
  • place sign, check for leaks, insulate
  • you can't change refrigerants
  • nothing must be done

7: Pressure vessels shall be provided with ___________in accordance with Section VIII of the ASME Boiler & Pressure Vessel Code

  • over pressure protection as well as a temperature protection device
  • over pressure protection and a rupture disc
  • over pressure protection
  • Pressure vessels need no type of protection as long as it is hydrostatically tested every three months

8: What is Trichlorotrifluoromethane?

  • R-13
  • R-11
  • R-113
  • R-12

9: What must be done to refrigerant pipes before being buried?

  • Encased
  • Leaked checked
  • Coated
  • Certified

10: Class A refrigerants are considered

  • non-flammable
  • toxic
  • non-toxic
  • flammable

11: When an inspection is needed, how often must it be done?

  • every 24 months
  • every 18 months
  • annually
  • every 36 months

12: Who is permitted to access a refrigeration machine room?

  • Contractors only
  • Anyone, it's a completely safe area
  • Any employee
  • Authorized persons only

13: Systems containing more than 110 pounds must have stop valves located at the

  • compressor suction inlet
  • compressor discharge outlet
  • receiver inlet and outlet
  • All of the above

14: Which of the following is an inorganic refrigerant?

  • R-22
  • Ammonia
  • Chlorofluorocarbons
  • All of the above

15: What must be done if refrigeration lines pass through a concrete floor?

  • insulated
  • moisture barrier
  • installed through a pipe casing
  • leak checked

16: All serviceable components of a refrigeration system shall be provided with

  • name plates with markings referring to pressure and temperature in accordance with ASME Boiler and Pressure Vessel Code
  • manufactures instructions on start-up procedures
  • service manuals
  • safe access

17: What type of relief valve is used on a CO2 system?

  • rupture disc
  • fusible plug
  • glove disc
  • gate valve

18: How many refrigerant classifications are there for flammability?

  • 2
  • 1
  • 3
  • 7

19: What is a Category "M" fluid?

  • A fluid which is nonflammable, nontoxic, not damaging to human tissues, does not exceed 150 psig, and the designed temperature is between -20F to 366F
  • Any fluid that exceeds 150 psig and has design temperatures over 366F
  • A typical refrigerant used on newer air conditioning and heat pump systems
  • A toxic fluid, which can produce serious irreversible harm to persons on breathing or bodily content

20: copper and its alloys shall not be used in contact with _____ except as a component of bronze alloys for bearing or other non-refrigerant containing uses.

  • ammonia
  • CFC-11
  • Lithium bromide
  • HCFC-123

21: According to ASHRAE Standard-15 9.8 Positive Displacement Compressor Protection, the pressure-relief device discharge into

  • the low-pressure side of the system
  • the high side of the system
  • the liquid receiver
  • both a and c are correct

22: A declaration test is needed when the system contains more than

  • 65 lbs
  • 120 lbs
  • 55 lbs
  • 110 lbs

23: How much clearance do you need around the perimeter of electrical panels?

  • 24"
  • 36"
  • 18"
  • 12"

24: Can you use Ammonia in industrial applications?

  • Yes, always
  • Yes, Under certain condidtions
  • When mixed with R-718
  • No, never

25: Which occupancy can ammonia be used in?

  • commercial
  • depends on the quantity of freon
  • redifential
  • industrial