ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: What is a Category "D" fluid?

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

2: What kind of material can't be used on the outlet of a relief valve?

  • Stainless Steel
  • PVC
  • Aluminum
  • Copper

3: A High-Probability System

  • is such that any leak will cause injury or death to anyone within a 100 square foot area
  • is such that a leak of refrigerant from a failed connection will enter the occupied space
  • is a system highly likely to leak form a failed connection or component of such system
  • is such that a leak of refrigerant from a failed connection will enter an unoccupied space

4: When releasing a hydrogenated hydrocarbon refrigerant to the atmosphere, ample ventilation must be provided and

  • the owner shall be informed
  • explosion precautions must be taken
  • no flames shall be permitted
  • gas masks must be worn

5: Large Mercantile occupancy is a premise or that portion of a premise where more than ____ persons congregate on levels above or below the street level to purchase personal merchandise.

  • 400
  • 350
  • 100
  • 250

6: What should not (and can not) be located between a pressure imposing device and a pressure-limiting device?

  • Muffler
  • Moisture indicator
  • Foot valve
  • Stop valve

7: A restaurant is classified as a

  • public assembly occupancy
  • commercial occupancy
  • large mercantile occupancy
  • mixed occupancy

8: System design pressures must take into consideration, not only, pressures found during normal operation but also what?

  • When it's cold out
  • When there is a malfunction on the high side
  • When its warm out
  • All of the above

9: A hotel is considered a _______ occupancy.

  • commercial
  • residential
  • institutional
  • mercantile

10: Which refrigerant class listed below is the most flammable?

  • A2
  • B2
  • C3
  • A3

11: The Department that certifies the transportation of refrigerant is the

  • RSES
  • EPO
  • DOT
  • EPA

12: Pressure relief valves shall be marked with the data from

  • Section VIII Division of the ASME Boiler & Pressure Code
  • Section IV Division of the ASME Boiler & Pressure Code
  • Section I Division VIII of ASME Boiler & Pressure Code
  • Section XIII Division of the ASME Boiler & Pressure Code

13: Liquid level gauges must be provided with what?

  • A low level mark
  • A red line
  • A relief valve
  • Automatic shut-offs

14: R-123 belongs to Group

  • B-2
  • B-3
  • A-3
  • B-1

15: Which occupancy can ammonia be used in?

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

16: How many gallons of water do you need per pound of ammonia?

  • 1
  • 100
  • 50
  • 10

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

  • 15'
  • 20'
  • 30'
  • 25'

18: It shall be the duty of the person in charge of the premises on which a refrigeration system containing more than ___ lbs of refrigerant is installed to provide a schematic drawing or panel giving directions for the operation of the system.

  • 75
  • 15
  • 50
  • 55

19: 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 15' above grade
  • At least 25' above grade

20: The discharge relief valve is located (9.4.6)

  • on top of the condensor
  • between the compressor and reciever
  • between the compressor and oil separator
  • between the compressor and the stop valve

21: A positive displacement compressor is

  • where the compressor's suction pressure and the compressor;s discharge pressure is more than 50 PSI
  • a compressor in which the increase in pressure is attained by changing the internal volume of the compression chamber
  • is a reciprocating type compressor with 2 or more pistons
  • a compressor in which the increase in pressure is attained by changing the internal pressure of the compression chamber

22: A machine room with a refrigerant system using ammonia shall

  • be provided with a continuously operated ventilation system
  • be considered a non-hazardous location in accordance with National Electrical code
  • have no flame producing apparatus permanently installed and operated
  • All of the above

23: Evaporators within 18" of a heating coil must be equipped with a

  • low limit control
  • zone valve
  • pressure relief device
  • high limit control

24: A movie theater would be considered a

  • commercial occupancy
  • public assembly occupancy
  • mixed occupancy
  • institutional occupancy

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

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