ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: B3 refrigerants are considered

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

2: What is an example of institutional occupancy?

  • Hospital
  • Shopping mall
  • Football stadium
  • Dorms

3: Low temperature systems should have what?

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

4: 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

5: A positive displacement compressor is

  • where the compressor's suction pressure and the compressor;s discharge pressure is more than 50 PSI
  • is a reciprocating type compressor with 2 or more pistons
  • a compressor in which the increase in pressure is attained by changing the internal pressure of the compression chamber
  • a compressor in which the increase in pressure is attained by changing the internal volume of the compression chamber

6: A professional or office building would be considered what type of occupancy?

  • mercantile
  • commercial
  • public assembly
  • business

7: R-11 belongs to Group

  • B-1
  • B-3
  • A-2
  • A-1

8: Class T machine room

  • shall include closets used for setting equipment
  • has no flame producing apparatus permanently installed
  • shall have remote controls to stop the action of the refrigerant compressor
  • shall have refrigerant leak detecting systems installed inside and outside the room

9: Indirect systems using Group II refrigerants

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

10: How many different groups of refrigerants are there?

  • 7
  • 15
  • 11
  • 3

11: Liquid level gauges must be provided with what?

  • Automatic shut-offs
  • A relief valve
  • A low level mark
  • A red line

12: What type refrigerant is NOT ozone depleting?

  • Halon
  • HFC
  • CFC
  • HCFC

13: What was the main reason for enacting the no venting rule of July 1, 1992?

  • Ozone depletion
  • Green house effect
  • Global warming potential
  • All of the above

14: How far from the ground does a relief valve need to be?

  • At least 25' above grade
  • At least 20' above grade
  • At least 15' above grade
  • Not more than 3' above grade

15: What does safe access mean?

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

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

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

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

  • Muffler
  • Stop valve
  • Foot valve
  • Moisture indicator

18: Fusible plugs must have what marked on them?

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

19: When a receiver is greater than 3 cubic feet but less than 10 cubic feed, what is the minimum relief device required?

  • fusible plug
  • relief valve
  • rupture disc
  • all of the above

20: The ____ design is the maximum pressure for which a specific part of a refrigeration system is designed.

  • high pressure
  • critical pressure
  • low pressure
  • design pressure

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

  • annually
  • regularly
  • quarterly
  • bi-annually

22: Refrigeration piping before being buried shall be

  • leak tested
  • encased in pipe duct
  • pressure tested
  • All of the above

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

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

24: Stop valves shall not be permitted between the system and the

  • bleed valve
  • relief valve
  • condenser
  • service valve

25: Can you use Ammonia in industrial applications?

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