ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: A “U” or “UM” marking a on a nameplate of a pressure vessels signifies compliance with Section VIII of

  • the ASME Boiler and Pressure Vessel Code
  • Section 11.3.1.5 ASHRAE 15 Standard
  • the ANSI Standard 10.7.2
  • both the ANSI Standard 10.7.2 and ASHRAE 15 Standard 11.3.1.5

2: Before determining if a machinery room equipment is excluded from following Ashrae 15, you must determine how many pounds of refrigerant per _____ cubic feet?

  • 1,000
  • 100
  • 10,000
  • 100,000

3: High pressure controls should be set no higher than

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

4: How many different groups of refrigerants are there?

  • 7
  • 11
  • 3
  • 15

5: R-22 is considered a(n)

  • HFC
  • HCFC
  • HCFCH
  • CFC

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

  • 10
  • 100
  • 50
  • 1

7: A person holding a license as a refrigeration technician may connect or disconnect for the purpose of installation, repair, or replacement, any electrical device or control to be a part of a refrigeration or air conditioning system, from the

  • load-side of the contactor in
  • breaker panel in
  • first disconnect in
  • 24 volt secondary side of the Class 2 transformer to the thermostat

8: Pressure vessels with an internal volume of 3 cubic feet or less

  • shall use fusible plugs
  • shall use pressure relief devices or fusible plugs
  • do not need pressure relief protection
  • shall use pressure relief devices

9: The Board of Boilers adopts by reference

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

10: Halogenated refrigerants cannot be used with what material?

  • Aluminum
  • Copper
  • Stainless steel
  • Magnesium alloy

11: 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

12: _____ and its alloys are suitable for use with ammonia systems.

  • Copper
  • Zinc
  • Aluminum
  • Magnesium

13: 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

14: Evaporators within 18" of a heating coil must be equipped with a

  • high limit control
  • low limit control
  • pressure relief device
  • zone valve

15: A hotel is considered a _______ occupancy.

  • commercial
  • institutional
  • residential
  • mercantile

16: 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.

  • 350
  • 100
  • 400
  • 250

17: Ammonia can come in contact with _______ ?

  • Brass
  • Aluminum
  • Copper tubing
  • Copper

18: Emergency shutdown procedures, including precautions to be observed in case of a breakdown or leak over 55 lbs of refrigerant charge, shall be displayed on a conspicuous card located as near as possible to the

  • boiler
  • outside the machinery room
  • compressor
  • evaporator

19: 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

20: According to the 522 CMR Board of Boilers, refrigerant detectors, alarms, and the refrigeration mechanical room ventilating systems shall be tested

  • bi-annually
  • regularly
  • quarterly
  • annually

21: NH3 is

  • ammonia
  • lithium bromide
  • R-508A
  • R-718

22: What is the refrigerant chlorodifluoromethane?

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

23: What refrigerant has zero ozone depletion

  • HFC
  • CFC
  • HCFC
  • None of the above

24: Which of the following are considered inorganic refrigerants?

  • R-717 and R-718
  • 410A and R-407C
  • R-500 and R-502
  • None of the above

25: 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.

  • 25
  • 15
  • 10
  • 20