ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: Indirect systems using Group II refrigerants

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

2: The dial of a pressure gauge, when installed on the high side of a system be graduated 1.2 times the designed pressure.

  • True
  • False

3: Doors communicating with outside from a mechanical room must be?

  • Steel, approved, weather-stripped
  • Self-closing, approved, fire door
  • Self-closing, wooden, fire door
  • Self-closing, aligned, fire door

4: How far from the window does a relief valve need to be according to ASHRAE-15?

  • At least 40'
  • At least 20'
  • There is no minimum for relief valve and windows.
  • At least 30'

5: How many flammability classifications are refrigerants in?

  • 5
  • 2
  • 3
  • 7

6: A relief valve discharge capacity is rated in

  • Pounds of air per minute.
  • temperature minus pounds of air per second divided by release rate squared
  • PSIA
  • PSIG

7: A High-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 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

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

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

9: How many refrigerant classifications are there for toxicity?

  • 5
  • 2
  • 1
  • 3

10: B3 refrigerants are considered

  • toxic but non-flammable
  • non-toxic but non-flammable
  • non-toxic but flammable
  • toxic and highly flammable

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

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

12: An evaporator coil located near heating coil shall have a pressure-relief device installed within ______ inches of the evaporator.

  • 36
  • 48
  • 24
  • 18

13: What is an egress?

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

14: The Board of Boilers adopts by reference

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

15: Fusible plugs must have what marked on them?

  • Melting temperature in F
  • Melting temperature in C
  • Opening pressure
  • All of the above

16: A class A3 refrigerant is considered

  • non-toxic but highly flammable
  • toxic and somewhat flammable
  • non-toxic and non-flammable
  • toxic and non-flammable

17: Refrigeration devices shall be equipped with a ____ to protect against unexpected pressure due to a malfunction or fire?

  • Circuit Breaker
  • Relief valve
  • T&P device
  • Temperature limiter device

18: What type refrigerant is NOT ozone depleting?

  • CFC
  • Halon
  • HFC
  • HCFC

19: 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

20: 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'
  • 7.00'
  • 7.25'
  • 8'4"

21: What is not a requirement of a class T machine room?

  • automatic ventilation
  • fire hose connection to the building fire protection system
  • tight fitting doors
  • self-closing doors

22: Joints in refrigeration piping must be _____ before being covered?

  • Inspected
  • Insulated
  • Leak tested
  • Pressurized

23: The Department that certifies the transportation of refrigerant is the

  • DOT
  • EPA
  • EPO
  • RSES

24: What is an example of institutional occupancy?

  • Football stadium
  • Dorms
  • Shopping mall
  • Hospital

25: When a refrigeration or air conditioning system is installed

  • it shall not be operated below prescribed pressures
  • it shall be approved by the owner for proper operation.
  • the form of certificate shall be authorized by the Department of Pubic safety
  • a field inspection shall be made before it is put into service