ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: 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.

  • 350
  • 550
  • 100
  • 50

2: A Low-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 such that a leak of refrigerant from a failed connection can not enter the occupied space
  • is a system highly likely to leak form a failed connection or component of such system

3: When a receiver is greater than 3 cubic feet but less than 10 cubic feed, what is the minimum relief device required?

  • fusible plug
  • relief valve
  • rupture disc
  • all of the above

4: How many CFMs are required per square foot of commercial office occupied space

  • .5 CFM
  • 15 CFM
  • 5 CFM
  • 20 CFM

5: When a pressure gauge is permanently installed on a system, it must be ___ times the design pressure of the system.

  • 1.2
  • 1
  • 1.5
  • 2.2

6: How many refrigerant classifications are there for flammability?

  • 3
  • 2
  • 1
  • 7

7: What type refrigerant is NOT ozone depleting?

  • CFC
  • HCFC
  • HFC
  • Halon

8: When liquid receivers are used, the liquid refrigerant shall not exceed _______percent of the volume at 90F.

  • 75%
  • 99%
  • 90%
  • 80%

9: What refrigerant were phased out in 2004?

  • R-11
  • R-134a
  • R-22
  • R-12

10: Group A1 refrigerants over ____ pounds in a system must discharge to the atmosphere

  • 6.6
  • 1,000
  • 110
  • 330

11: Large vessels containing refrigerant ______________________ from using two or more pressure-relief devices in parallel to obtain the required capacity.

  • of Group B2 refrigerant shall be prohibited
  • shall not be prohibited
  • shall be prohibited
  • containing R-11, R-123 & R-717 exclusively shall not be prohibited

12: Liquid level gauges shall have _____________ with one exception being that of the liquid level gauge bull’s eye type.

  • color-coded glass to determine type of refrigerant
  • moisture indicators
  • automatic closing shut-off valves
  • All of the above

13: Machinery rooms must be vented to ______?

  • outdoors
  • unoccupied spaces
  • neutralizing tank
  • basement

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

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

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

  • 12"
  • 18"
  • 24"
  • 36"

16: What was the main reason for enacting the no venting rule of July 1, 1992?

  • Ozone depletion
  • Green house effect
  • Global warming potential
  • All of the above

17: Name an HCFC refrigerant(s):

  • R-22
  • R-123
  • R-11
  • both a & b

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

  • 10
  • 15
  • 24
  • 18

19: R-717 is

  • water
  • carbon dioxide
  • trichloromethane
  • ammonia

20: What refrigerant doesn't have to be classifted?

  • R-711
  • R-718
  • R-134a
  • R-717

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

  • True
  • False

22: Joints in refrigeration piping must be _____ before being covered?

  • Leak tested
  • Insulated
  • Inspected
  • Pressurized

23: Class 3 refrigerants are

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

24: Pressure vessels having design pressures of 15 psig or less shall have the strength to withstand at least ______times the design pressure.

  • 2.0
  • 5.5
  • 2.5
  • 3.0

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

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