ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: What is R-290’s ASHRAE safety code?

  • B1
  • A3
  • A2
  • B2

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

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

3: Refrigerant systems containing Group I refrigerants can be installed in or on public stairways.

  • True
  • False

4: What refrigerant were phased out in 2004?

  • R-22
  • R-12
  • R-11
  • R-134a

5: What is the refrigerant dichlorodifluoromethane?

  • R-123
  • R-12
  • R-134A
  • R-22

6: R-11 belongs to Group

  • A-2
  • B-1
  • A-1
  • B-3

7: Ammonia shall be discharged into ____________ or a tank containing one gallon of water for every pound of ammonia.

  • the atmosphere
  • a de-pressurized recovery tank with a silver top and yellow bottom
  • a tank containing two pounds of a water/lithium bromide mix for every pound of ammonia
  • All of the above

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

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

9: Relief valves are rated in

  • gallons of water per minute
  • pounds of air per hour
  • pounds of air per minute
  • gallons of water per hour

10: What type of pressure relief device is used on a CO2 system?

  • Fusible plug
  • Glove valve
  • Gate valve
  • Rupture disk

11: A pressure vessel having an inside diameter of 6” or less shall be sufficient to withstand ____times the pressure of the saturation temperature of the refrigerant or ____times the critical pressure of the refrigerant, whichever is less.

  • 2.5, 2.5
  • 6.6, 6.6
  • 2.5, 3.0
  • 3.0, 3.5

12: R-410A is classified as a ____ refrigerant on the safety matrix.

  • A-1
  • B-1
  • A-2
  • B-2

13: Ashrae states that the equipment on a building needs to conform to adjacent buildings classifications when within ____ feet from opening and intakes.

  • 15
  • 20
  • 50
  • 75

14: What is the intention of the word “should” as used in the code?

  • A mandatory requirement
  • A recommendation or advisory guideline
  • A technician’s choice of how it should be done
  • None of the Above

15: What section of ASHRAE-15 governs pressure vessels?

  • Section 6 ASHRAE-34 ASME VIII unfired
  • Section 7 ASHRAE-15 ASME VIII fired
  • Section 9 ASHRAE-15 ASME VIII unfired
  • OSHA

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

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

17: Pressure vessels nameplate markings must be compliant with the

  • ASHRAE 34 Standards
  • CMR-588 & CMR-528
  • ASME Boiler and Pressure Vessel Code
  • All of the Above

18: Indirect systems using Group II refrigerants

  • shall be used in refrigeration system in excess of 1,000 lbs
  • shall be used for mechanical equipment only
  • shall have all refrigerant containing parts except piping, installed in a Class T machine room
  • shall be used in refrigeration system less than 1,000 lbs

19: What section governs pressure vessels?

  • Section 1 ASHREA 15 ASME fired
  • Section ASHREA 34
  • Section 8 ASHREA 15 ASME unfired
  • OSHA

20: A High-Probablity system

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

21: R-22 is considered a(n)

  • HFC
  • HCFCH
  • HCFC
  • CFC

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

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

23: A Low-Probability System

  • is such that a leak of refrigerant from a failed connection will enter the occupied space
  • is such that a leak of refrigerant from a failed connection can not enter the occupied space
  • is such that any leak will cause injury or death to anyone within a 100 square foot area
  • is a system highly likely to leak form a failed connection or component of such system

24: A total of all group A-2,B-2, A-3, and B-3 refrigerants shall not exceed ____ lb in the occupied areas and machinery rooms of institutional occupancies.

  • 550
  • 50
  • 350
  • 100

25: There can be no airflow from an occupied space through a machine room unless what?

  • System is high velocity
  • System is ducted and sealed
  • Duct is not located in the ceiling
  • None of the above.