ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: 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.

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

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

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

3: R-11 belongs to Group

  • A-2
  • B-1
  • B-3
  • A-1

4: 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

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

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

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

  • place sign, check for leaks, insulate
  • you can't change refrigerants
  • make sure it's compatible, notify owner, notify A.H.J
  • nothing must be done

7: When an inspection is needed, how often must it be done?

  • every 24 months
  • every 18 months
  • every 36 months
  • annually

8: Who authorizes changes to the safety codes?

  • Person in charge of the facility
  • Person who pulled the permit
  • Contractor who last serviced the system.
  • Board of Boilers

9: 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.

  • 10
  • 20
  • 25
  • 15

10: Systems containing more than 110 pounds must have stop valves located at the

  • compressor suction inlet
  • compressor discharge outlet
  • receiver inlet and outlet
  • All of the above

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

  • 110
  • 330
  • 6.6
  • 1,000

12: Pipe identification labels are required when the system contains more than

  • 120 lbs
  • 65 lbs
  • 110 lbs
  • 55 lbs

13: Ammonia is under what safety classification?

  • A3
  • B2
  • B1
  • B3

14: Industrial occupancy is

  • a premise or that portion of a premise that is not open to the public, where access by authorized persons is controlled, and that is used to manufacture, process, or store goods, such as chemicals, food, ice, meat, or petroleum.
  • is a premise or that portion of a premise where large number of people congregate and from which occupants cannot quickly vacate the space.
  • a premise or that portion of a premise where people transact business, receive personal service, or purchase food and other goods.
  • Both a and b are correct

15: Who approves containers for refrigerants?

  • E.P.A
  • D.O.D
  • D.O.E
  • D.O.T

16: Large mercantile occupancy is

  • a premise of that portion of a premise where more than 50 persons congregate on levels above of below street level to purchase personal merchandise.
  • a premise or that portion of a premise where more than 200 persons congregate on levels above or below street level to purchase personal merchandise
  • a premise of that portion of a premise where more than 100 persons congregate on levels above of below street level to purchase personal merchandise.
  • a premise or that portion of a premise where more than 1500 persons congregate on levels above or below street level to purchase personal merchandise

17: When a refrigeration or air conditioning system is installed

  • it shall not be operated below prescribed pressures
  • 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

18: What is the refrigerant chlorodifluoromethane?

  • R-123
  • R-12
  • R-134a
  • R-22

19: Indirect systems using Group II refrigerants

  • 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
  • shall have all refrigerant containing parts except piping, installed in a Class T machine room

20: High pressure controls should be set no higher than

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

21: What section governs pressure vessels?

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

22: A pressure-limiting device isn't required on a factory-sealed system containing less than ____ lbs.

  • 66
  • 50
  • 25
  • 22

23: All electrical work done on refrigeration systems must comply with

  • OSHA
  • NEC and Massachusetts Modifications
  • ASHREA-15 Section 9.2.1
  • Department of Energy

24: The discharge relief valve is located (9.4.6)

  • on top of the condensor
  • between the compressor and the stop valve
  • between the compressor and oil separator
  • between the compressor and reciever

25: When is the only time you can leave a service container attached to a system?

  • Leaking system
  • Recovery
  • Charging
  • Both b and c