ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: Can ammonia be used on domestic system?

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

2: What is an egress?

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

3: Class A refrigerants are considered

  • flammable
  • toxic
  • non-toxic
  • non-flammable

4: R-410A is classified as a ____ refrigerant on the safety matrix.

  • B-2
  • A-2
  • B-1
  • A-1

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

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

6: 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.

  • 8'4"
  • 9.00'
  • 7.00'
  • 7.25'

7: Field Inspections of refrigeration and A/C systems in Massachusetts shall be made by

  • District Engineering Inspectors
  • Commissioned Inspectors
  • Master licensed Technician
  • both a or b

8: 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.

  • 50
  • 100
  • 350
  • 550

9: Pressure vessels with an internal volume of 3 cubic feet or more

  • do not need pressure relief protection
  • shall use pressure relief devices or fusible plugs
  • shall use pressure relief devices
  • shall use fusible plugs

10: A class B1 refrigerant is considered

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

11: 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

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

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

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

  • commercial
  • public assembly
  • mercantile
  • business

14: Refrigerants shall be classified by

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

15: A Low-Probability System

  • is such that a leak of refrigerant from a failed connection can not enter the occupied space
  • is such that a leak of refrigerant from a failed connection will enter the occupied space
  • is such that any leak will cause injury or death to anyone within a 100 square foot area
  • is a system highly likely to leak form a failed connection or component of such system

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

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

17: Evaporators located ____inches of a heating coil shall be equipped whit a pressure relief device.

  • 10
  • 24
  • 18
  • 15

18: What must be done to refrigerant pipes before being buried ?(8.10.4)

  • Classifed
  • Certified
  • Leak checked
  • Insulated and installed in a pipe duct (Encased)

19: What section governs pressure vessels?

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

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

  • 10
  • 100
  • 50
  • 1

21: There can be no airflow from an occupied space through a machine room unless what?

  • System is high velocity
  • System is ducted and sealed
  • Duct is not located in the ceiling
  • None of the above.

22: 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

23: What is R-22?

  • Chlorofluoromethane
  • HFC
  • Chlorodifluoromethane
  • CCFCM

24: Machinery rooms must be vented to ______?

  • neutralizing tank
  • outdoors
  • unoccupied spaces
  • basement

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

  • DOT
  • EPA
  • EPO
  • RSES