ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: 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
  • 100
  • 250

2: Methyl Chloride is a halogenated refrigerant and should not come in contact with

  • aluminum
  • zinc
  • magnesium
  • all of the above

3: Each machinery room shall contain

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

4: A professional or office building would be considered what type of occupancy?

  • business
  • mercantile
  • commercial
  • public assembly

5: How many gallons of water do you need per pound of ammonia?

  • 1
  • 50
  • 10
  • 100

6: Dual-pressure relief devices should be installed on

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

7: The total amount of refrigerant stored in a machinery room in all containers not provided with relief valves shall not exceed

  • 660 lbs
  • 55 lbs
  • 330 lbs.
  • 550 lbs

8: When must refrigeration system covered by the code be inspected?

  • Annually
  • Not required
  • Upon installation
  • Annually and when installed

9: What should not (and can not) be located between a pressure imposing device and a pressure-limiting device?

  • Moisture indicator
  • Foot valve
  • Muffler
  • Stop valve

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

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

11: copper and its alloys shall not be used in contact with _____ except as a component of bronze alloys for bearing or other non-refrigerant containing uses.

  • ammonia
  • HCFC-123
  • Lithium bromide
  • CFC-11

12: R-22 is considered a(n)

  • CFC
  • HFC
  • HCFC
  • HCFCH

13: What refrigerant doesn't have to be classified?

  • R-717
  • R-422A
  • R-718
  • R-134A

14: Ammonia is under what safety classification?

  • B2
  • B1
  • B3
  • A3

15: Who approves containers for refrigerants?

  • D.O.E
  • D.O.T
  • D.O.D
  • E.P.A

16: A hotel is considered a _______ occupancy.

  • mercantile
  • residential
  • commercial
  • institutional

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

  • Inspected
  • Leak tested
  • Pressurized
  • Insulated

18: What type of relief valve is used on a CO2 system?

  • rupture disc
  • fusible plug
  • glove disc
  • gate valve

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

  • Magnesium alloy
  • Copper
  • Stainless Steel
  • Aluminum

20: R-22 falls under which safety classification?

  • B-1
  • B-2
  • A-2
  • A-1

21: 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

22: Large mercantile occupancy is

  • a premise of that portion of a premise where more than 100 persons congregate on levels above of below street level to purchase personal merchandise.
  • a premise or that portion of a premise where more than 200 persons congregate on levels above or below street level to purchase personal merchandise
  • a premise or that portion of a premise where more than 1500 persons congregate on levels above or below street level to purchase personal merchandise
  • a premise of that portion of a premise where more than 50 persons congregate on levels above of below street level to purchase personal merchandise.

23: A High-Probability System

  • is such that a leak of refrigerant from a failed connection will enter the occupied space
  • 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 an unoccupied space
  • is a system highly likely to leak form a failed connection or component of such system

24: 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

25: Fusible plugs must have what marked on them?

  • Melting temperature in F
  • Melting temperature in C
  • Opening pressure
  • All of the above