ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

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

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

2: Pressure vessels having an inside diameter of 6” or less shall be protected by

  • a pressure relief device
  • Pressure vessels having an inside diameter of 6” or less need no such protection unless otherwise specified
  • either a fusible plug or a pressure relief device
  • a fusible plug

3: Group A3 refrigerants have a ______ flammability rating than Group B1 refrigerants

  • there is no Group B1 refrigerants
  • the same
  • higher
  • lower

4: A relief valve shall be located at least ___ above grade.

  • 25'
  • 36'
  • 15'
  • 10'

5: Name a CFC refrigerant(s):

  • R-11
  • R-12
  • R-123
  • both a & b

6: What type of relief valve is used on low pressure centrifugal compressor systems?

  • Spring-loaded relief valve
  • Rupture disc
  • Purge relief
  • None of the above

7: How many different groups of refrigerants are there?

  • 3
  • 15
  • 7
  • 11

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

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

9: An example of direct system is

  • rooftop unit
  • chiller
  • absorber
  • none of the above

10: The test pressure applied to the high side of each factory-assembled refrigerating system shall be at least equal to the design pressure of

  • the aggregate of the high side and low side
  • the high side
  • 2.5 times the design pressure
  • the low side

11: How many CFMs are required per square foot of commercial office occupied space

  • 20 CFM
  • 15 CFM
  • .5 CFM
  • 5 CFM

12: The color code of a tank of ammonia is

  • white
  • lavender
  • silver
  • light green

13: What is R-22?

  • Chlorodifluoromethane
  • Chlorofluoromethane
  • CCFCM
  • HFC

14: Direct systems using Group II refrigerants

  • shall be installed in Class T machinery rooms
  • shall be allowed to be used for human comfort.
  • shall be installed per instruction of the AHJ
  • shall not be used for air condition for human comfort

15: The 522 CMR 9.00 has adopted for reference ASHRAE ____

  • III
  • 25
  • 10
  • 15

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

  • regularly
  • quarterly
  • annually
  • bi-annually

17: What must be done to refrigerant pipes before being buried ?(8.10.4)

  • Insulated and installed in a pipe duct (Encased)
  • Certified
  • Leak checked
  • Classifed

18: Which occupancy can ammonia be used in?

  • redifential
  • commercial
  • industrial
  • depends on the quantity of freon

19: Large mercantile occupancy is

  • 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.
  • 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 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 1500 persons congregate on levels above or below street level to purchase personal merchandise

20: Group A2 refrigerants have a ______ toxicity rating than Group B1 refrigerants.

  • lower
  • there is no Group B1 refrigerants
  • higher
  • the same

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

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

22: A declaration test is needed when the system contains more than

  • 120 lbs
  • 65 lbs
  • 55 lbs
  • 110 lbs

23: Name three things that must be done when changing refrigeration lubricant?

  • Make sure it's compatible, notify owner, notify AHJ
  • Nothing must be done
  • You can't change lubricants.
  • Place sign, check for leaks, insulate

24: A High-Probablity system

  • 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
  • is such that any leak will cause injury or death to anyone within a 100 square foot area
  • is a system highly likely to leak from a failed connection or component of such system

25: What is an example of institutional occupancy?

  • Football stadium
  • Shopping mall
  • Hospital
  • Dorms