ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: Refrigerant piping crossing an open space that affords passageway in any building shall not be less than _____ feet above the floor unless piping is located against the ceiling.

  • 9.00'
  • 7.25'
  • 7.00'
  • 8'4"

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

  • RSES
  • DOT
  • EPA
  • EPO

3: What would be the classification of a church?

  • Large mercantile
  • Institutional
  • Industrial
  • Place of assembly

4: All welding done on any refrigeration system or piping covered by 522 CMR 9.00 shall be performed by a according to Section IX of the ASME code

  • licensed technician
  • licensed welder
  • competent welder
  • welder qualified

5: What happens after your initial inspection of a pressure vessel?

  • Notify the Fire Marshal that the system has been inspected and approved
  • There is a temporary shut-down until a final inspection can be performed.
  • Inspector leaves a metal tag with a certification listed on it
  • Notify the AHJ to let them know that the system been inspected

6: 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

7: Halo-carbon refrigerants cannot be used with what material?

  • Stainless Steel
  • Magnesium alloy
  • Copper
  • Aluminum

8: Pressure vessels of 10 cubic feet or more gross volume shall use

  • at least one rupture member
  • a dual pressure-relief valve if charging into the atmosphere
  • at least three means of discharge and/or rupture discs
  • both a and b are correct

9: 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.

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

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

11: Direct systems using Group II refrigerants

  • shall not be used for air condition for human comfort
  • shall be installed per instruction of the AHJ
  • shall be installed in Class T machinery rooms
  • shall be allowed to be used for human comfort.

12: When is the space above a drop ceiling calculated as space for refrigerant limit quantities?

  • When it's used as part of a supply or return air system
  • When its white
  • When there is a space 6' or more above it
  • When there are sprinklers above

13: How many refrigerant classifications are there for toxicity?

  • 1
  • 5
  • 2
  • 3

14: The dial of a pressure gauge, when installed on the high side of a system be graduated 1.2 times the designed pressure.

  • True
  • False

15: What is the minimum size of the discharge pipe?

  • Same size as the outlet of the relief valve
  • One pipe size larger that the inlet of the relief valve
  • Depends on size of manifold
  • All of the above

16: A Low-Probability System

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

17: Trichlorofluoromethane is the name of what refrigerant?

  • R-502
  • R-12
  • R-11
  • R-113

18: Refrigerant restricted in 2004 but used for transition for decades:

  • R-123
  • R-22
  • R-134A
  • R-11

19: Class T machine room

  • shall have remote controls to stop the action of the refrigerant compressor
  • has no flame producing apparatus permanently installed
  • shall have refrigerant leak detecting systems installed inside and outside the room
  • shall include closets used for setting equipment

20: Class 3 refrigerants are

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

21: The color code of a tank of ammonia is

  • silver
  • light green
  • white
  • lavender

22: Ammonia belongs to Group

  • A-1
  • B-2
  • B-1
  • A-2

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

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

24: Evaporators located ____inches of a heating coil shall be equipped whit a pressure relief device.

  • 15
  • 10
  • 18
  • 24

25: Stop valves shall not be permitted between the system and the

  • relief valve
  • service valve
  • bleed valve
  • condenser