ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

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

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

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

  • Magnesium alloy
  • PVC
  • Stainless steel
  • Copper

3: Can you use Ammonia in industrial applications?

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

4: Pressure relief devices are marked with a ____________ signifying compliance with the ASME Boiler & Pressure Vessel Code.

  • UL and UM
  • UL and UR
  • UV or UR
  • UM or UL

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

  • Leaked checked
  • Certified
  • Coated
  • Encased

6: A factory-sealed system containing less than 22lbs. of Group A1 refrigerant

  • shall have a pressure limiting device installed on the high side of the system
  • does not require a pressure-limiting device
  • shall have a pressure limiting device and a pressure relief valve installed
  • shall be inspected by the Boiler of Inspectors bi-annually

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

  • 15
  • 18
  • 24
  • 10

8: What would be the classification for Stop & Shop grocery store?

  • Instituional
  • Large mercantile
  • Place of assembly
  • Industrial

9: The color code of a tank of ammonia is

  • silver
  • light green
  • lavender
  • white

10: No open flames are allowed in the machinery room unless?

  • Approved by the installing contractor
  • Never can be allowed
  • Approved by the authorized person
  • Only when combustion air is provided from outside of the machinery room

11: A class A3 refrigerant is considered

  • toxic and somewhat flammable
  • non-toxic and non-flammable
  • toxic and non-flammable
  • non-toxic but highly flammable

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

  • 10
  • III
  • 25
  • 15

13: Pressure vessels with an internal volume of 10 cubic feet or more

  • shall use rupture discs or duel pressure relief valves
  • shall use fusible plugs
  • shall use pressure relief devices
  • shall use pressure relief devices or fusible plugs

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

  • A-1
  • A-2
  • B-2
  • B-1

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

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

16: Group A2 refrigerants have a ______ toxicity rating than Group B1 refrigerants.

  • lower
  • higher
  • the same
  • there is no Group B1 refrigerants

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

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

18: What is the refrigerant dichlorodifluoromethane?

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

19: A Low-Probability System

  • 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 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

20: The pressure relief device of a positive displacement compressor shall discharge in the ______________or in accordance with 9.7.8

  • low side of the system
  • the liquid side of the system
  • the vapor side of the system
  • high side of the system

21: Liquid level gauges must be provided with what?

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

22: R-12. R-22, and R-40 are considered Group I refrigerants.

  • True
  • False

23: 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, 3.0
  • 6.6, 6.6
  • 3.0, 3.5
  • 2.5, 2.5

24: Class 3 refrigerants are

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

25: Can a R22 line set be reused for a 410A system and if it can be reused, what must be done to it?

  • Flush with R-718
  • Flush with RX-11
  • Flush with ammonia
  • Flush with R-11