ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

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

  • service manuals
  • 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

2: A Category D fluid

  • is when the fluid handled is non flammable, nontoxic, and not damaging to human as defined in ANSI/ASME Process Piping.
  • is when the design pressure does not exceed 150 psi
  • a fluid for service piping in which the potential for personnel exposure is judged to cause harm and irreversible damage to those persons exposed to it
  • Both a and b are correct

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

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

4: 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.

  • 25
  • 10
  • 15
  • 20

5: A declaration test is needed when the system contains more than

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

6: When can recovered refrigerants be reused?

  • They can't
  • Only when used in original owner's equipment
  • Only if used in 30 days of recovery
  • None of the above

7: Each machinery room shall contain

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

8: Halo-carbon refrigerants cannot be used with what material?

  • Aluminum
  • Stainless Steel
  • Magnesium alloy
  • Copper

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

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

10: When a refrigeration or air conditioning system is installed

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

11: A hotel is considered a _______ occupancy.

  • mercantile
  • institutional
  • residential
  • commercial

12: How many flammability classifications are refrigerants in?

  • 3
  • 7
  • 5
  • 2

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

  • A-1
  • B-1
  • A-2
  • B-2

14: Where are the three places that the discharge from an ammonia relief valve be piped?

  • atmosphere, tank containing water, where the A.H.J. indicates
  • underground, into drain, into mechanical room
  • to chemical neutralizing tank only
  • none of the above

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

  • 6.6
  • 1,000
  • 330
  • 110

16: R-718 is rated unlimited for refrigeration quantity contained in a system. Why?

  • R-718 is not rated unlimited because it's a dangerous refrigerant
  • Because it's a non-flammable refrigerant
  • Because it's water
  • Because it's cheap

17: All machine rooms must be outfitted with a detector that _______?

  • activates an audible alarm
  • activates a visual alarm
  • starts the ventilation system
  • All of the above

18: A High-Probability System

  • is such that a leak of refrigerant from a failed connection will enter the occupied space
  • is a system highly likely to leak form a failed connection or component of such system
  • is such that a leak of refrigerant from a failed connection will enter an unoccupied space
  • is such that any leak will cause injury or death to anyone within a 100 square foot area

19: Can you use Ammonia in industrial applications?

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

20: Ammonia belongs to Group

  • A-2
  • B-2
  • B-1
  • A-1

21: What is Trichlorotrifluoromethane?

  • R-12
  • R-13
  • R-113
  • R-11

22: Ashrae states that the equipment on a building needs to conform to adjacent buildings classifications when within ____ feet from opening and intakes.

  • 15
  • 20
  • 50
  • 75

23: Fusible plugs must have what marked on them?

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

24: Pressure-limiting device isn't required on a factory-sealed system containing less than ____ lbs.

  • 22
  • 18
  • 33
  • 50

25: R-22 falls under which safety classification?

  • B-2
  • A-2
  • A-1
  • B-1