ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: A machine room with a refrigerant system using ammonia shall

  • be provided with a continuously operated ventilation system
  • be considered a non-hazardous location in accordance with National Electrical code
  • have no flame producing apparatus permanently installed and operated
  • All of the above

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

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

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

  • business
  • commercial
  • mercantile
  • public assembly

5: According to ASHRAE Standard-15 9.8 Positive Displacement Compressor Protection, the pressure-relief device discharge into

  • the low-pressure side of the system
  • the high side of the system
  • the liquid receiver
  • both a and c are correct

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

  • 36"
  • 18"
  • 24"
  • 12"

7: Refrigerants shall be classified by

  • color codes
  • toxicity and flammability
  • maximum permissible quantities of each group
  • requirements for commercial, industrial, and residential occupancies

8: What kind of material can't be used on the outlet of a relief valve?

  • Stainless Steel
  • Copper
  • Aluminum
  • PVC

9: All serviceable components of a refrigeration system shall be provided with

  • name plates with markings referring to pressure and temperature in accordance with ASME Boiler and Pressure Vessel Code
  • manufactures instructions on start-up procedures
  • safe access
  • service manuals

10: Group A1 refrigerants over ____ pounds in a system must discharge to the atmosphere

  • 110
  • 1,000
  • 6.6
  • 330

11: Each machinery room shall contain

  • a refrigerant detector located in an area where the refrigerant from a leak will concentrate
  • smoke and fire alarms as well as three means of egress and that egress must meet 528 CMR ventilation requirements
  • a toxicity detector where the presence of ammonia or lithium bromide from a leak will concentrate
  • high and low pressure controls

12: The 522 CMR 9.00 has adopted for reference ASHRAE ____

  • III
  • 10
  • 15
  • 25

13: B3 refrigerants are considered

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

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

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

15: What type of copper is not permitted on refrigeration systems?

  • Type K
  • Type N
  • Type L
  • Type M

16: _____ alloys shall not be used in contact with an halogenated refrigerants.

  • Magnesium
  • Nickel
  • Zinc
  • Copper

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

  • True
  • False

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

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

19: A movie theater would be considered a

  • institutional occupancy
  • mixed occupancy
  • public assembly occupancy
  • commercial occupancy

20: Name an HCFC refrigerant(s):

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

21: When a refrigeration or air conditioning system is installed

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

22: What is Trichlorotrifluoromethane?

  • R-113
  • R-13
  • R-12
  • R-11

23: High pressure controls should be set no higher than

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

24: Direct systems using Group II refrigerants

  • shall not be used for air condition for human comfort
  • shall be installed in Class T machinery rooms
  • shall be installed per instruction of the AHJ
  • shall be allowed to be used for human comfort.

25: Liquid level gauges must be provided with what?

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