ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: Low temperature systems should have what?

  • High pour point
  • Low pour point
  • High viscosity
  • None of the above

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

  • 1
  • 5
  • 20
  • 15

3: 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
  • 10
  • 15
  • 20

4: High pressure controls should be set no higher than

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

5: NH3 is

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

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

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

7: The Board of Boilers adopts by reference

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

8: Pressure vessels shall be provided with ___________in accordance with Section VIII of the ASME Boiler & Pressure Vessel Code

  • over pressure protection and a rupture disc
  • Pressure vessels need no type of protection as long as it is hydrostatically tested every three months
  • over pressure protection as well as a temperature protection device
  • over pressure protection

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

  • Stop valve
  • Moisture indicator
  • Muffler
  • Foot valve

10: How are refrigerant blends classified?

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

11: How many different groups of refrigerants are there?

  • 3
  • 11
  • 15
  • 7

12: The main purpose of a refrigerant detector in a machinery room is to

  • inform there is a refrigerant leak int he system
  • detect toxins in the air caused by a refrigerant leak
  • to set off an alarm when there is refrigerant present inside the room
  • all of the above

13: Large vessels containing refrigerant ______________________ from using two or more pressure-relief devices in parallel to obtain the required capacity.

  • of Group B2 refrigerant shall be prohibited
  • shall be prohibited
  • shall not be prohibited
  • containing R-11, R-123 & R-717 exclusively shall not be prohibited

14: What does safe access mean?

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

15: A hotel is considered a _______ occupancy.

  • commercial
  • mercantile
  • institutional
  • residential

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

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

17: A Category D fluid

  • is when the fluid handled is non flammable, nontoxic, and not damaging to human as defined in ANSI/ASME Process Piping.
  • is when the design pressure does not exceed 150 psi
  • a fluid for service piping in which the potential for personnel exposure is judged to cause harm and irreversible damage to those persons exposed to it
  • Both a and b are correct

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

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

19: What do you need to do when you install a new system?

  • Add refrigerant
  • Have it inspected
  • Insulate the suction line before you take a superheat reading
  • Document the superheat and subcooling reading

20: What section governs pressure vessels?

  • Section 8 ASHREA 15 ASME unfired
  • OSHA
  • Section ASHREA 34
  • Section 1 ASHREA 15 ASME fired

21: The ASHRAE Standard 34 requires what type of alarm for equipment rooms using HCFC-123?

  • CO Sensing
  • phosgene gas sening
  • A group sensing
  • refrigerant sensing

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

  • Place sign, check for leaks, and insulate suction line
  • Make sure its compatible, notify owner, and notify AHJ.
  • Nothing must be done
  • you can never change refrigerants

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

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

24: Who is permitted to access a refrigeration machine room?

  • Any employee
  • Anyone, it's a completely safe area
  • Contractors only
  • Authorized persons only

25: 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

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