ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: What is not a requirement of a Class T machine room?

  • Fire hose connected to the building fire protection system.
  • Automatic ventilation
  • Self-closing doors
  • Tight fitting doors

2: Pressure vessels nameplate markings must be compliant with the

  • ASHRAE 34 Standards
  • CMR-588 & CMR-528
  • ASME Boiler and Pressure Vessel Code
  • All of the Above

3: 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

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

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

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

  • a fusible plug
  • 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 pressure relief device

6: No open flames are allowed in the machinery room unless?

  • Approved by the authorized person
  • Approved by the installing contractor
  • Never can be allowed
  • Only when combustion air is provided from outside of the machinery room

7: When liquid receivers are used, the liquid refrigerant shall not exceed _______percent of the volume at 90F.

  • 90%
  • 80%
  • 99%
  • 75%

8: Which refrigerant replaced R-12?

  • R-134A
  • R-410A
  • R-22
  • R-407A

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

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

10: 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

11: What does safe access mean?

  • OSHA approved
  • Well-lit exit signs
  • Locked doors
  • A clear unobstructed path to the equipment and controls

12: Refrigerant restricted in 2004 but used for transition for decades:

  • R-11
  • R-22
  • R-134A
  • R-123

13: 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

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

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

15: R-410A is classified as a ____ refrigerant on the safety matrix.

  • A-2
  • B-1
  • B-2
  • A-1

16: Name an HCFC refrigerant(s):

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

17: Can you use Ammonia in industrial applications?

  • No, never
  • Yes, always
  • When mixed with R-718
  • Yes, Under certain condidtions

18: Pressure relief valves shall be marked with the data from

  • Section XIII Division of the ASME Boiler & Pressure Code
  • Section VIII Division of the ASME Boiler & Pressure Code
  • Section IV Division of the ASME Boiler & Pressure Code
  • Section I Division VIII of ASME Boiler & Pressure Code

19: R-11 belongs to Group

  • A-1
  • B-3
  • B-1
  • A-2

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

  • C3
  • A2
  • B2
  • A3

21: 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.

22: What is an egress?

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

23: NH3 is

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

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

  • Magnesium alloy
  • Copper
  • Stainless Steel
  • Aluminum

25: How are refrigerant blends classified?

  • Based on best case Fractionation
  • Based on worst case fractionation
  • Blends don't have to be classified
  • Based on the oil used