ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: Each machinery room shall contain

  • smoke and fire alarms as well as three means of egress and that egress must meet 528 CMR ventilation requirements
  • high and low pressure controls
  • 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

2: Pressure relief devices are marked with a ____________ signifying compliance with the ASME Boiler & Pressure Vessel Code.

  • UM or UL
  • UV or UR
  • UL and UM
  • UL and UR

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

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

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

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

5: What refrigerant doesn't have to be classified?

  • R-717
  • R-422A
  • R-134A
  • R-718

6: Joints in refrigeration piping must be _____ before being covered?

  • Pressurized
  • Inspected
  • Leak tested
  • Insulated

7: Ammonia (NH3) is a group III refrigerant

  • True
  • False

8: A Low-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 any leak will cause injury or death to anyone within a 100 square foot area
  • is such that a leak of refrigerant from a failed connection can not enter the occupied space

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

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

10: A High-Probability System

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

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

  • RSES
  • EPO
  • DOT
  • EPA

12: When should a relief valve start to function?

  • 10 psi before it's set pressure
  • Before the purge station discharges
  • Two times it's working pressure
  • At it's set pressure

13: 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

14: Name three things that must be done when changing refrigeration lubricant?

  • You can't change lubricants.
  • Make sure it's compatible, notify owner, notify AHJ
  • Nothing must be done
  • Place sign, check for leaks, insulate

15: System design pressures must take into consideration, not only, pressures found during normal operation but also what?

  • When it's cold out
  • When there is a malfunction on the high side
  • When its warm out
  • All of the above

16: R-11 belongs to Group

  • B-3
  • A-1
  • B-1
  • A-2

17: A class A3 refrigerant is considered

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

18: Whoever owns/uses a refrigeration or air conditioning system covered by this code

  • must notify the Department of Public Safety prior to starting the system
  • shall be licensed by the Commonwealth of Massachusetts according to CMR 522
  • shall make application for inspections to the Chief of Inspectors
  • None of the above

19: What was the main reason for enacting the no venting rule of July 1, 1992?

  • Ozone depletion
  • Green house effect
  • Global warming potential
  • All of the above

20: A “U” or “UM” marking a on a nameplate of a pressure vessels signifies compliance with Section VIII of

  • the ASME Boiler and Pressure Vessel Code
  • Section 11.3.1.5 ASHRAE 15 Standard
  • the ANSI Standard 10.7.2
  • both the ANSI Standard 10.7.2 and ASHRAE 15 Standard 11.3.1.5

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

  • Coated
  • Encased
  • Leaked checked
  • Certified

22: What section governs pressure vessels?

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

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

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

24: R-22 is classified as a ____ refrigerant on the safety matrix.

  • A-2
  • A-1
  • B-2
  • B-1

25: Class 3 refrigerants are

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