ASHRAE/CMR code Prep Quiz

Topics: ASHRAE/CMR

Quiz Result Settings

1: Pressure vessels having an inside diameter of 6” or less shall be protected by

  • either a fusible plug or a pressure relief device
  • a fusible plug
  • a pressure relief device
  • Pressure vessels having an inside diameter of 6” or less need no such protection unless otherwise specified

2: Where are the three places that the discharge from an ammonia relief valve be piped?

  • To chemical neutralizing tank only
  • Underground, into drain, into mechanical room
  • Atmosphere, Tank containing water, where the AHJ indicates.
  • None of the above.

3: Class 3 refrigerants are

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

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

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

5: R-22 falls under which safety classification?

  • A-1
  • B-2
  • B-1
  • A-2

6: Ashrae states that the equipment on a building needs to conform to adjacent buildings classifications when within ____ feet from opening and intakes.

  • 15
  • 20
  • 50
  • 75

7: Liquid level gauges shall have _____________ with one exception being that of the liquid level gauge bull’s eye type.

  • color-coded glass to determine type of refrigerant
  • moisture indicators
  • automatic closing shut-off valves
  • All of the above

8: 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

9: Pressure vessels of 10 cubic feet or more gross volume shall use

  • at least one rupture member
  • a dual pressure-relief valve if charging into the atmosphere
  • at least three means of discharge and/or rupture discs
  • both a and b are correct

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

  • Large mercantile
  • Place of assembly
  • Industrial
  • Instituional

11: Group A1 refrigerants over ____ pounds in a system must discharge to the atmosphere

  • 6.6
  • 110
  • 1,000
  • 330

12: 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

13: R-717 is

  • ammonia
  • trichloromethane
  • carbon dioxide
  • water

14: 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

15: The certificate of inspection

  • shall be posted and protected from dirt, water, and other elements
  • shall be posted on the compressor shell or electrical panel at the unit
  • shall be authorized by a notarized insurance company
  • shall be $20 and an additional fee of $1 for each tone above 20 tons

16: Pressure vessels having design pressures of 15 psig or less shall have the strength to withstand at least ______times the design pressure.

  • 2.5
  • 3.0
  • 5.5
  • 2.0

17: Class T machine room

  • has no flame producing apparatus permanently installed
  • shall have remote controls to stop the action of the refrigerant compressor
  • shall have refrigerant leak detecting systems installed inside and outside the room
  • shall include closets used for setting equipment

18: Defined process piping by code CMR (528)

  • Any piping that conveys a solid, liquid or gas that is not part of the plumbing or fire protection system
  • Any piping in an industrial space
  • Any piping in an industrial or commercial space
  • All of the above

19: 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

20: A premise or that portion of a premise where people transact business, receive personal service, or purchase foods, other goods is considered a

  • mercantile occupancy
  • business occupancy
  • public assembly occupancy.
  • commercial occupancy

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

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

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

  • regularly
  • bi-annually
  • quarterly
  • annually

23: What is an example of institutional occupancy?

  • Hospital
  • Shopping mall
  • Dorms
  • Football stadium

24: A class A3 refrigerant is considered

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

25: What must be done to all doors and access points in duct work going through a mechanical room?

  • Must be hindged
  • Must be screwed shut
  • Must be sealed and gasketed
  • All of the above