ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: When air is ducted through a machine room that services occupied space, What must be done?

  • Insulated and cross broke
  • Welded and seamed.
  • Flanged and gasketed
  • Ducted and sealed

2: R-717 is

  • trichloromethane
  • carbon dioxide
  • water
  • ammonia

3: What is not a requirement of a Class T machine room?

  • Self-closing doors
  • Tight fitting doors
  • Fire hose connected to the building fire protection system.
  • Automatic ventilation

4: 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

5: What happens after your initial inspection of a pressure vessel?

  • There is a temporary shut-down until a final inspection can be performed.
  • Notify the Fire Marshal that the system has been inspected and approved
  • Notify the AHJ to let them know that the system been inspected
  • Inspector leaves a metal tag with a certification listed on it

6: 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

7: When testing systems using non-positive displacement compressors, the entire system shall be considered for test purposes as the low side.

  • True
  • False

8: Who authorizes changes to the safety codes?

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

9: Low temperature systems should have what?

  • High pour point
  • Low pour point
  • High viscosity
  • None of the above

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

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

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

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

12: What should not (and can not) be located between a pressure imposing device and a pressure-limiting device?

  • Stop valve
  • Muffler
  • Moisture indicator
  • Foot valve

13: What refrigerant has zero ozone depletion

  • HFC
  • CFC
  • HCFC
  • None of the above

14: Which refrigerant(s) is an HFC?

  • R-22
  • R-410A
  • R-502
  • All of the above

15: 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

16: Institutional occupancy is

  • a premise or that portion of a premise where large numbers of people congregate and from which occupants cannot quickly vacate the space.
  • a premise or that portion of a premise from which, because they are disabled, debilitated, or confined, occupants cannot readily leave without the assistance of others.
  • a premise or that portion of a premise where people transact business, receive personal service, or purchase food and other goods.
  • None of the above

17: Refrigerant restricted in 2004 but used for transition for decades:

  • R-22
  • R-134A
  • R-123
  • R-11

18: According to ASHRAE Standard-15 9.8 Positive Displacement Compressor Protection, the pressure-relief device discharge into

  • the low-pressure side of the system
  • the high side of the system
  • the liquid receiver
  • both a and c are correct

19: The main cause of enacting the "no vending rule" of July 1st 1992 was

  • global warming potential
  • ozone depletion
  • both a & b
  • None of the above

20: Which refrigerant class listed below is the most flammable?

  • C3
  • A3
  • A2
  • B2

21: How many refrigerant classifications are there for toxicity?

  • 1
  • 5
  • 2
  • 3

22: A High-Probablity system

  • is such that a leak of refrigerant from failed connections will enter the unoccupied space
  • is such that a leak of refrigerant from failed connections will enter the occupied space
  • is a system highly likely to leak from 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

23: What type refrigerant is NOT ozone depleting?

  • CFC
  • HFC
  • HCFC
  • Halon

24: What section governs pressure vessels?

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

25: R-12. R-22, and R-40 are considered Group I refrigerants.

  • True
  • False