ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: Where a refrigeration or air conditioning system is installed,

  • A field inspection shall be made before it is put into service
  • the form or certificate shall be authorized by the Department of Public Safety
  • The company who installed the system must notify the fire department in the jurisdiction where installed
  • it shall not be operated below prescribed pressuers

2: 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

3: Liquid level gauge glasses shall have automatic closing shut off valves, except Bull's eye or reflex type.

  • True
  • False

4: 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

5: A restaurant is classified as a

  • commercial occupancy
  • public assembly occupancy
  • large mercantile occupancy
  • mixed occupancy

6: A Low-Probability System

  • 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
  • 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

7: The gauge thickness required on a CO2 tank construction is

  • 1/16"
  • 5/16"
  • 3/32"
  • 1/8"

8: 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
  • 250
  • 400
  • 350

9: Before you change the type of refrigerant in a refrigeration system, what three things must be done?

  • you can't change refrigerants
  • nothing must be done
  • place sign, check for leaks, insulate
  • make sure it's compatible, notify owner, notify A.H.J

10: What is Trichlorotrifluoromethane?

  • R-12
  • R-11
  • R-113
  • R-13

11: The Board of Boilers adopts by reference

  • MSCA Code
  • the MACS Pressure Vessel Code of Massachusetts
  • Montreal Protocol Safety Code
  • the 1997 ANSI/ASHRAE Safety Code

12: Which refrigerant class listed below is the most flammable?

  • A-3
  • B-2
  • A-1
  • C-3

13: 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.

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

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

  • 1,000
  • 110
  • 330
  • 6.6

15: A room having machinery but no flame producing apparatus permanently installed and operated is considered a

  • Class M machinery room
  • Class T machinery room
  • Class A machinery room
  • Class B machinery room

16: Systems containing more than 110 pounds must have stop valves located at the

  • compressor suction inlet
  • compressor discharge outlet
  • receiver inlet and outlet
  • All of the above

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

  • commercial
  • business
  • mercantile
  • public assembly

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

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

19: Refrigerants shall be classified by

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

20: What is the refrigerant dichlorodifluoromethane?

  • R-134A
  • R-22
  • R-123
  • R-12

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

  • Stop valve
  • Muffler
  • Foot valve
  • Moisture indicator

22: How many flammability classifications are refrigerants in?

  • 3
  • 5
  • 7
  • 2

23: Indirect systems using Group II refrigerants

  • shall be used in refrigeration system in excess of 1,000 lbs
  • shall have all refrigerant containing parts except piping, installed in a Class T machine room
  • shall be used for mechanical equipment only
  • shall be used in refrigeration system less than 1,000 lbs

24: What must be done to all doors and access points in duct work going through a mechanical room?

  • Must be hindged
  • Must be screwed shut
  • Must be sealed and gasketed
  • All of the above

25: Halogen refrigerants are corrosive to which type of metal?

  • stainless steel
  • copper
  • magnesium
  • black iron