Topics: ASHRAE/CMR
1: How many CFMs are required per square foot of commercial office occupied space
- 15 CFM
- 20 CFM
- .5 CFM
- 5 CFM
2: Class T machine room
- shall have refrigerant leak detecting systems installed inside and outside the room
- has no flame producing apparatus permanently installed
- shall have remote controls to stop the action of the refrigerant compressor
- shall include closets used for setting equipment
3: R-22 is classified as a ____ refrigerant on the safety matrix.
- A-1
- B-1
- A-2
- B-2
4: The pressure relief device of a positive displacement compressor shall discharge in the ______________or in accordance with 9.7.8
- low side of the system
- high side of the system
- the vapor side of the system
- the liquid side of the system
5: Where a refrigeration or air conditioning system is installed,
- The company who installed the system must notify the fire department in the jurisdiction where installed
- it shall not be operated below prescribed pressuers
- A field inspection shall be made before it is put into service
- the form or certificate shall be authorized by the Department of Public Safety
6: What type refrigerant is NOT ozone depleting?
- HFC
- CFC
- Halon
- HCFC
7: Ammonia shall be discharged into ____________ or a tank containing one gallon of water for every pound of ammonia.
- the atmosphere
- a de-pressurized recovery tank with a silver top and yellow bottom
- a tank containing two pounds of a water/lithium bromide mix for every pound of ammonia
- All of the above
8: What section governs pressure vessels?
- Section 1 ASHREA 15 ASME fired
- Section 8 ASHREA 15 ASME unfired
- OSHA
- Section ASHREA 34
9: A restaurant is classified as a
- commercial occupancy
- mixed occupancy
- large mercantile occupancy
- public assembly occupancy
10: It shall be the duty of the person in charge of the premises on which a refrigeration system containing more than ___ lbs of refrigerant is installed to provide a schematic drawing or panel giving directions for the operation of the system.
- 50
- 55
- 75
- 15
11: R-22 is considered a(n)
- CFC
- HCFCH
- HFC
- HCFC
12: What is not a requirement of a Class T machine room?
- Self-closing doors
- Fire hose connected to the building fire protection system.
- Tight fitting doors
- Automatic ventilation
13: 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
14: When air is ducted through a machine room that services occupied space, What must be done?
- Ducted and sealed
- Flanged and gasketed
- Welded and seamed.
- Insulated and cross broke
15: How many gallons of water do you need per pound of ammonia?
- 50
- 10
- 1
- 100
16: A High-Probability System
- is such that a leak of refrigerant from a failed connection will enter the occupied space
- is such that a leak of refrigerant from a failed connection will enter an unoccupied space
- is such that any leak will cause injury or death to anyone within a 100 square foot area
- is a system highly likely to leak form a failed connection or component of such system
17: Which refrigerant class listed below is the most flammable?
- A-3
- A-1
- B-2
- C-3
18: When must refrigeration system covered by the code be inspected?
- Not required
- Annually and when installed
- Upon installation
- Annually
19: 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
20: Can you use Ammonia in industrial applications?
- Yes, always
- Yes, Under certain condidtions
- When mixed with R-718
- No, never
21: Which of the following is an inorganic refrigerant?
- R-22
- Ammonia
- Chlorofluorocarbons
- All of the above
22: Emergency shutdown procedures, including precautions to be observed in case of a breakdown or leak over 55 lbs of refrigerant charge, shall be displayed on a conspicuous card located as near as possible to the
- outside the machinery room
- evaporator
- boiler
- compressor
23: Pressure-limiting device isn't required on a factory-sealed system containing less than ____ lbs.
- 50
- 22
- 33
- 18
24: What is a Category "D" fluid?
- Any fluid that exceeds 150 psig and has design temperature of over 366F
- A fluid which is nonflammable, nontoxic, not damaging to human tissues, does not exceed 150 psig, and design temperature is between -20F to 366F
- A toxic fluid, which can produce serious irreversible harm to persons on breathing or bodily contact
- A typical refrigerant used on newer air conditioning and heat pump ssytems
25: Refrigerants shall be classified by
- color codes
- maximum permissible quantities of each group
- requirements for commercial, industrial, and residential occupancies
- toxicity and flammability