ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: A premise where large numbers of people congregate and from which occupants can not quickly vacate the space is considered

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

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

  • 50
  • 75
  • 15
  • 20

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

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

4: The main cause of enacting the "no vending rule" of July 1st 1992 was

  • global warming potential
  • ozone depletion
  • both a & b
  • None of the above

5: High pressure controls should be set no higher than

  • 10% of set point
  • 80% of set point
  • 90% of set point
  • 25% of set point

6: Institutional occupancy is

  • a premise or that portion of a premise where large numbers of people congregate and from which occupants cannot quickly vacate the space.
  • a premise or that portion of a premise from which, because they are disabled, debilitated, or confined, occupants cannot readily leave without the assistance of others.
  • a premise or that portion of a premise where people transact business, receive personal service, or purchase food and other goods.
  • None of the above

7: Which refrigerant replaced R-12?

  • R-410A
  • R-134A
  • R-407A
  • R-22

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

  • 18
  • 24
  • 10
  • 15

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

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

10: Dual-pressure relief devices should be installed on

  • vessels of 10 cubic feet or more
  • vessels of 3 cubic feet or more
  • vessels of 3 cubic feet or less
  • vessels of 10 cubic feet or less

11: The ASHRAE Standard 34 requires what type of alarm for equipment rooms using HCFC-123?

  • refrigerant sensing
  • A group sensing
  • phosgene gas sening
  • CO Sensing

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

  • 330
  • 110
  • 6.6
  • 1,000

13: When this is installed on the high side of a system, it must be capable of reading 1.2 times the design pressure (ASHRAE 15 9.11.3)

  • Pressure gauge
  • Temperature gauge
  • Sight glass gauge
  • All of the above

14: Who is permitted to access a refrigeration machine room?

  • Contractors only
  • Authorized persons only
  • Anyone, it's a completely safe area
  • Any employee

15: Each machinery room shall contain

  • a refrigerant detector located in an area where the refrigerant from a leak will concentrate
  • high and low pressure controls
  • smoke and fire alarms as well as three means of egress and that egress must meet 528 CMR ventilation requirements
  • a toxicity detector where the presence of ammonia or lithium bromide from a leak will concentrate

16: Direct systems using Group II refrigerants

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

17: Refrigerants shall be classified by

  • maximum permissible quantities of each group
  • requirements for commercial, industrial, and residential occupancies
  • color codes
  • toxicity and flammability

18: Which refrigerant(s) is an HFC?

  • R-22
  • R-410A
  • R-502
  • All of the above

19: What do you need to do when you install a new system?

  • Document the superheat and subcooling reading
  • Add refrigerant
  • Have it inspected
  • Insulate the suction line before you take a superheat reading

20: A High-Probablity system

  • 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
  • is such that a leak of refrigerant from failed connections will enter the unoccupied space
  • is such that a leak of refrigerant from failed connections will enter the occupied space

21: 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

22: Machinery rooms must be vented to ______?

  • neutralizing tank
  • outdoors
  • unoccupied spaces
  • basement

23: What must be done to refrigerant pipes before being buried ?(8.10.4)

  • Leak checked
  • Classifed
  • Certified
  • Insulated and installed in a pipe duct (Encased)

24: Pressure vessels having an inside diameter of 6” or less shall be protected by

  • either a fusible plug or a pressure relief device
  • a pressure relief device
  • Pressure vessels having an inside diameter of 6” or less need no such protection unless otherwise specified
  • a fusible plug

25: 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
  • 250
  • 100