ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: 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

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

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

3: What is the minimum size of the discharge pipe?

  • Same size as the outlet of the relief valve
  • One pipe size larger that the inlet of the relief valve
  • Depends on size of manifold
  • All of the above

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

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

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

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

6: How many groups of refrigerants are there?

  • 3
  • 5
  • 7
  • 1

7: Can a R22 line set be reused for a 410A system and if it can be reused, what must be done to it?

  • Flush with R-718
  • Flush with ammonia
  • Flush with RX-11
  • Flush with R-11

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

  • EPA
  • DOT
  • RSES
  • EPO

9: What must be done if refrigeration lines pass through a concrete floor?

  • leak checked
  • moisture barrier
  • insulated
  • installed through a pipe casing

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

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

11: What refrigerant is an inorganic compound?

  • Ammonia
  • R-410A
  • R-132A
  • R-22

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

  • III
  • 10
  • 25
  • 15

13: 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

14: What would be the classification for Stop & Shop grocery store?

  • Large mercantile
  • Industrial
  • Place of assembly
  • Instituional

15: What refrigerant were phased out in 2004?

  • R-11
  • R-22
  • R-134a
  • R-12

16: A room having machinery but no flame producing apparatus permanently installed and operated is considered a

  • Class M machinery room
  • Class B machinery room
  • Class A machinery room
  • Class T machinery room

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

  • 25'
  • 15'
  • 30'
  • 20'

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

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

19: 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

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

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

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

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

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

  • Stainless Steel
  • Copper
  • PVC
  • Aluminum

23: A relief valve discharge capacity is rated in

  • PSIG
  • temperature minus pounds of air per second divided by release rate squared
  • Pounds of air per minute.
  • PSIA

24: What type of refrigerants are NOT flammable?

  • CHC
  • HFC
  • HCFC
  • All of the above

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

  • 66
  • 50
  • 25
  • 22