ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

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

  • 20'
  • 15'
  • 30'
  • 25'

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

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

3: A pressure vessel having an inside diameter of 6” or less shall be sufficient to withstand ____times the pressure of the saturation temperature of the refrigerant or ____times the critical pressure of the refrigerant, whichever is less.

  • 2.5, 2.5
  • 2.5, 3.0
  • 6.6, 6.6
  • 3.0, 3.5

4: NH3 is

  • lithium bromide
  • ammonia
  • R-718
  • R-508A

5: Who authorizes changes to the safety codes?

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

6: Machinery rooms shall be vented to _____________ and utilizing mechanical ventilation.

  • Machinery rooms need not be vented
  • the outdoors
  • the return air ducted system
  • the mechanical room housing the refrigeration system

7: How many gallons of water per pound of ammonia do you need?

  • 1
  • 5
  • 20
  • 15

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

  • Place of assembly
  • Instituional
  • Large mercantile
  • Industrial

9: R-22 falls under which safety classification?

  • A-1
  • A-2
  • B-1
  • B-2

10: What type of refrigerants are NOT flammable?

  • CHC
  • HFC
  • HCFC
  • All of the above

11: Refrigerants shall be classified by

  • color codes
  • maximum permissible quantities of each group
  • requirements for commercial, industrial, and residential occupancies
  • toxicity and flammability

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

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

13: According to the 522 CMR Board of Boilers, refrigerant detectors, alarms, and the refrigeration mechanical room ventilating systems shall be tested

  • bi-annually
  • regularly
  • quarterly
  • annually

14: Each machinery room shall contain

  • a refrigerant detector located in an area where the refrigerant from a leak will concentrate
  • 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 toxicity detector where the presence of ammonia or lithium bromide from a leak will concentrate

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

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

16: When should a relief valve start to function?

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

17: What would be the classification of a prison?

  • Place of assembly
  • Industrial
  • Institutional
  • Large mercantile

18: A movie theater would be considered a

  • commercial occupancy
  • institutional occupancy
  • public assembly occupancy
  • mixed occupancy

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

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

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: 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

22: 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

23: How many groups of refrigerants are there?

  • 5
  • 7
  • 3
  • 1

24: 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

25: A High-Probablity system

  • 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
  • is such that a leak of refrigerant from failed connections will enter the unoccupied space