ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: Which occupancy can ammonia be used in?

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

2: 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

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

  • DOT
  • RSES
  • EPO
  • EPA

4: A total of all group A-2,B-2, A-3, and B-3 refrigerants shall not exceed ____ lb in the occupied areas and machinery rooms of institutional occupancies.

  • 350
  • 100
  • 550
  • 50

5: A pressure relief should be located at least _______ from windows and doors.

  • 20'
  • 30'
  • 25'
  • 15'

6: How much clearance do you need around the perimeter of electrical panels?

  • 24"
  • 36"
  • 18"
  • 12"

7: Evaporators within 18" of a heating coil must be equipped with a

  • zone valve
  • low limit control
  • high limit control
  • pressure relief device

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

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

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

  • Moisture indicator
  • Foot valve
  • Stop valve
  • Muffler

10: Indirect systems using Group II refrigerants

  • 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 in excess of 1,000 lbs
  • shall be used in refrigeration system less than 1,000 lbs

11: Ammonia (NH3) is a group III refrigerant

  • True
  • False

12: Liquid level gauge glasses shall have automatic closing shut off valves, except Bull's eye or reflex type.

  • True
  • False

13: Pressure vessels of 10 cubic feet or more gross volume shall use

  • at least one rupture member
  • a dual pressure-relief valve if charging into the atmosphere
  • at least three means of discharge and/or rupture discs
  • both a and b are correct

14: Ammonia is under what safety classification?

  • B3
  • A3
  • B2
  • B1

15: 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

16: A plug containing an alloy that will melt at a specific temperature to relief pressure is a

  • fusion plug
  • relief plug
  • rupture plug
  • fusible plug

17: Pressure vessel having an inside diameter exceeding 6” with an internal pressure greater than 15psig shall be marked directly on or on the nameplate the letters _______________ signifying compliance with the ASME Boiler & Pressure Vessel Code.

  • “UL”
  • “UM” and “UV”
  • “U” or “UM”
  • “UV”

18: Can ammonia be used on domestic system?

  • yes
  • no
  • yes, for systems under 10 tons
  • no, unless there is proper ventilation system installed

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

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

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

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

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

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

22: When is the space above a drop ceiling calculated as space for refrigerant limit quantities?

  • When there are sprinklers above
  • When its white
  • When it's used as part of a supply or return air system
  • When there is a space 6' or more above it

23: What section of ASHRAE-15 governs pressure vessels?

  • Section 6 ASHRAE-34 ASME VIII unfired
  • Section 7 ASHRAE-15 ASME VIII fired
  • OSHA
  • Section 9 ASHRAE-15 ASME VIII unfired

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

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

25: When this is installed on the high side of a system, it must be capable of reading 1.2 times the design pressure (ASHRAE 15 9.11.3)

  • Pressure gauge
  • Temperature gauge
  • Sight glass gauge
  • All of the above