ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: 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.

  • 10
  • 15
  • 20
  • 25

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

  • name plates with markings referring to pressure and temperature in accordance with ASME Boiler and Pressure Vessel Code
  • manufactures instructions on start-up procedures
  • service manuals
  • safe access

3: Pressure relief valves shall be marked with the data from

  • Section IV Division of the ASME Boiler & Pressure Code
  • Section I Division VIII of ASME Boiler & Pressure Code
  • Section XIII Division of the ASME Boiler & Pressure Code
  • Section VIII Division of the ASME Boiler & Pressure Code

4: Doors communicating with outside from a mechanical room must be?

  • Self-closing, aligned, fire door
  • Self-closing, wooden, fire door
  • Steel, approved, weather-stripped
  • Self-closing, approved, fire door

5: What is Trichlorotrifluoromethane?

  • R-13
  • R-11
  • R-113
  • R-12

6: Group A2 refrigerants have a ______ toxicity rating than Group B1 refrigerants.

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

7: A total of all group A-2,B-2, A-3, and B-3 refrigerants shall not exceed ____ lb in the occupied areas and machinery rooms of institutional occupancies.

  • 550
  • 100
  • 350
  • 50

8: An evaporator coil located near heating coil shall have a pressure-relief device installed within ______ inches of the evaporator.

  • 24
  • 36
  • 48
  • 18

9: 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

10: No open flames are allowed in the machinery room unless?

  • Only when combustion air is provided from outside of the machinery room
  • Approved by the authorized person
  • Approved by the installing contractor
  • Never can be allowed

11: All welding done on any refrigeration system or piping covered by 522 CMR 9.00 shall be performed by a according to Section IX of the ASME code

  • competent welder
  • licensed technician
  • welder qualified
  • licensed welder

12: When liquid receivers are used, the liquid refrigerant shall not exceed _______percent of the volume at 90F.

  • 90%
  • 99%
  • 80%
  • 75%

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

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

14: Refrigerants shall be classified by

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

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

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

16: 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

17: What type of relief valve is used on low pressure centrifugal compressor systems?

  • Spring-loaded relief valve
  • Rupture disc
  • Purge relief
  • None of the above

18: Joints in piping for refrigeration containing parts must withstand temperatures of ___?

  • 600F
  • 700F
  • 1000F
  • 800F

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

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

20: What is a Category "M" fluid?

  • A fluid which is nonflammable, nontoxic, not damaging to human tissues, does not exceed 150 psig, and the designed temperature is between -20F to 366F
  • Any fluid that exceeds 150 psig and has design temperatures over 366F
  • A typical refrigerant used on newer air conditioning and heat pump systems
  • A toxic fluid, which can produce serious irreversible harm to persons on breathing or bodily content

21: How many refrigerant classifications are there for flammability?

  • 2
  • 1
  • 3
  • 7

22: What refrigerant doesn't have to be classifted?

  • R-717
  • R-134a
  • R-718
  • R-711

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

  • True
  • False

24: A hotel is considered a _______ occupancy.

  • commercial
  • residential
  • institutional
  • mercantile

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

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