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.

  • 250
  • 100
  • 350
  • 400

2: Which refrigerant(s) is an HFC?

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

3: What is an egress?

  • An entrance or exit
  • An escape route
  • A valve put on the low side of the system to prevent frosting
  • A code violation

4: A premise or that portion of a premise where people transact business, receive personal service, or purchase foods, other goods is considered a

  • mercantile occupancy
  • business occupancy
  • public assembly occupancy.
  • commercial occupancy

5: What type of pressure relief device is used on a CO2 system?

  • Gate valve
  • Rupture disk
  • Glove valve
  • Fusible plug

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

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

7: Ammonia (NH3) is a group III refrigerant

  • True
  • False

8: Whoever owns/uses a refrigeration or air conditioning system covered by this code

  • must notify the Department of Public Safety prior to starting the system
  • shall be licensed by the Commonwealth of Massachusetts according to CMR 522
  • shall make application for inspections to the Chief of Inspectors
  • None of the above

9: Halogenated refrigerants cannot be used with what material?

  • Stainless steel
  • Magnesium alloy
  • Aluminum
  • Copper

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

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

11: 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.

  • 50
  • 100
  • 550
  • 350

12: What is an example of institutional occupancy?

  • Football stadium
  • Shopping mall
  • Dorms
  • Hospital

13: 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 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 can not enter the occupied space

14: Name an HCFC refrigerant(s):

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

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

  • True
  • False

16: The ____ design is the maximum pressure for which a specific part of a refrigeration system is designed.

  • low pressure
  • design pressure
  • critical pressure
  • high pressure

17: 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

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

  • Stainless Steel
  • Copper
  • PVC
  • Aluminum

19: Insurance companies shall forward each inspection report of all refrigeration or A/C systems to the Chief of Inspections within

  • 1 week
  • 2 months
  • 14 days
  • 30 days

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

  • Foot valve
  • Muffler
  • Moisture indicator
  • Stop valve

21: How many different groups of refrigerants are there?

  • 7
  • 3
  • 11
  • 15

22: According to ASHRAE Standard-15 9.8 Positive Displacement Compressor Protection, the pressure-relief device discharge into

  • the low-pressure side of the system
  • the high side of the system
  • the liquid receiver
  • both a and c are correct

23: R-718 is rated unlimited for refrigeration quantity contained in a system. Why?

  • R-718 is not rated unlimited because it's a dangerous refrigerant
  • Because it's cheap
  • Because it's a non-flammable refrigerant
  • Because it's water

24: Setting a pressure relief device shall not exceed ___ of the design pressure

  • 80%
  • 75%
  • 90%
  • 100%

25: What is the refrigerant chlorodifluoromethane?

  • R-134a
  • R-12
  • R-22
  • R-123