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.

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

2: Where must a refrigeration contractor's license number be displayed?

  • Uniforms, checks, and invoices.
  • Trucks, invoices, and advertising
  • Truck, office, every job, and on all equipment
  • Trucks, license plates, and uniforms

3: What is not a requirement of a Class T machine room?

  • Tight fitting doors
  • Automatic ventilation
  • Fire hose connected to the building fire protection system.
  • Self-closing doors

4: Halogenated refrigerants cannot be used with what material?

  • Aluminum
  • Copper
  • Magnesium alloy
  • Stainless steel

5: What is the minimum height refrigeration piping should be placed against walls?

  • 72"
  • Ceiling height
  • 6'
  • 7.25'

6: What type of refrigerants are NOT flammable?

  • CHC
  • HFC
  • HCFC
  • All of the above

7: pressure relief valves must discharge to the atmosphere at a location not less than 15 feet from ground level and ____ feet from any window, ventilation opening, or exits of buildings.

  • 10
  • 25
  • 20
  • 15

8: Fusible plugs shall not be used with pressure vessels of

  • 3 cubic feet or less
  • 15 square feet or less
  • 3 cubic feet or more
  • 15 cubic feet or more

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

  • 6.6
  • 330
  • 110
  • 1,000

10: How many groups of refrigerants are there?

  • 1
  • 7
  • 5
  • 3

11: A movie theater would be considered a

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

12: The main purpose of a refrigerant detector in a machinery room is to

  • inform there is a refrigerant leak int he system
  • detect toxins in the air caused by a refrigerant leak
  • to set off an alarm when there is refrigerant present inside the room
  • all of the above

13: How many refrigerant classifications are there for toxicity?

  • 5
  • 3
  • 2
  • 1

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

  • A-2
  • B-1
  • A-1
  • B-2

15: All electrical work done on refrigeration systems must comply with

  • Department of Energy
  • NEC and Massachusetts Modifications
  • OSHA
  • ASHREA-15 Section 9.2.1

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

  • 1.2
  • 1
  • 2.2
  • 1.5

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

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

18: B3 refrigerants are considered

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

19: A plug containing an alloy that will melt at a specific temperature to relief pressure is a

  • fusion plug
  • fusible plug
  • rupture plug
  • relief plug

20: A class A3 refrigerant is considered

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

21: What is a Category "D" fluid?

  • A fluid which is nonflammable, nontoxic, not damaging to human tissues, does not exceed 150 psig, and design temperature is between -20F to 366F
  • A toxic fluid, which can produce serious irreversible harm to persons on breathing or bodily contact
  • A typical refrigerant used on newer air conditioning and heat pump ssytems
  • Any fluid that exceeds 150 psig and has design temperature of over 366F

22: 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.

  • 100
  • 400
  • 350
  • 250

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

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

24: 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

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

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