Topics: ASHRAE/CMR
1: Setting a pressure relief device shall not exceed ___ of the design pressure
- 90%
- 100%
- 75%
- 80%
2: 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
3: Who approves containers for refrigerants?
- E.P.A
- D.O.E
- D.O.D
- D.O.T
4: Methyl Chloride is a halogenated refrigerant and should not come in contact with
- aluminum
- zinc
- magnesium
- all of the above
5: Halogenated refrigerants cannot be used with what material?
- Copper
- Magnesium alloy
- Stainless steel
- Aluminum
6: 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
7: How many groups of refrigerants are there?
- 5
- 3
- 7
- 1
8: A person holding a license as a refrigeration technician may connect or disconnect for the purpose of installation, repair, or replacement, any electrical device or control to be a part of a refrigeration or air conditioning system, from the
- breaker panel in
- load-side of the contactor in
- 24 volt secondary side of the Class 2 transformer to the thermostat
- first disconnect in
9: An evaporator coil located near heating coil shall have a pressure-relief device installed within ______ inches of the evaporator.
- 18
- 24
- 48
- 36
10: Pressure limiting devices are not required for systems containing less then ________ refrigerants.
- 44 lbs
- 22 lbs
- 6.6 lbs
- 13.9 lbs
11: A Low-Probability 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 a system highly likely to leak form a failed connection or component of such system
- is such that a leak of refrigerant from a failed connection can not enter the occupied space
12: R-410A is classified as a ____ refrigerant on the safety matrix.
- B-1
- A-1
- A-2
- B-2
13: Class T machine room
- shall include closets used for setting equipment
- shall have remote controls to stop the action of the refrigerant compressor
- has no flame producing apparatus permanently installed
- shall have refrigerant leak detecting systems installed inside and outside the room
14: 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
15: 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
16: What kind of material can't be used on the outlet of a relief valve?
- Aluminum
- Copper
- Stainless Steel
- PVC
17: When air is ducted through a machine room that services occupied space, What must be done?
- Flanged and gasketed
- Welded and seamed.
- Insulated and cross broke
- Ducted and sealed
18: What is not a requirement of a class T machine room?
- self-closing doors
- automatic ventilation
- tight fitting doors
- fire hose connection to the building fire protection system
19: A premise or that portion of a premise where large numbers of people congregate and from which occupants cannot quickly vacate the space such as auditoriums, ballrooms, classrooms, passenger depots, restaurants, and theaters is considered a(n)
- commercial occupancy
- illegal occupancy
- institutional occupancy
- public assembly occupancy
20: Who authorizes changes to the safety codes?
- Board of Boilers
- Person in charge of the facility
- Contractor who last serviced the system.
- Person who pulled the permit
21: The ____ design is the maximum pressure for which a specific part of a refrigeration system is designed.
- high pressure
- low pressure
- design pressure
- critical pressure
22: R-11 belongs to Group
- A-1
- A-2
- B-1
- B-3
23: 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
24: A restaurant is classified as a
- large mercantile occupancy
- mixed occupancy
- public assembly occupancy
- commercial occupancy
25: When must refrigeration system covered by the code be inspected?
- Annually and when installed
- Upon installation
- Annually
- Not required