Topics: ASHRAE/CMR
1: Machinery rooms must be vented to ______?
- outdoors
- unoccupied spaces
- neutralizing tank
- basement
2: Ammonia can come in contact with _______ ?
- Aluminum
- Copper
- Copper tubing
- Brass
3: What happens after your initial inspection of a pressure vessel?
- Inspector leaves a metal tag with a certification listed on it
- There is a temporary shut-down until a final inspection can be performed.
- Notify the AHJ to let them know that the system been inspected
- Notify the Fire Marshal that the system has been inspected and approved
4: How many gallons of water do you need per pound of ammonia?
- 50
- 10
- 1
- 100
5: When liquid receivers are used, the liquid refrigerant shall not exceed _______percent of the volume at 90F.
- 75%
- 99%
- 90%
- 80%
6: R-22 falls under which safety classification?
- A-1
- A-2
- B-1
- B-2
7: Refrigeration piping before being buried shall be
- leak tested
- encased in pipe duct
- pressure tested
- All of the above
8: Pressure relief devices are marked with a ____________ signifying compliance with the ASME Boiler & Pressure Vessel Code.
- UL and UM
- UM or UL
- UV or UR
- UL and UR
9: What is a Category "D" fluid?
- 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
- 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
10: Pressure vessels nameplate markings must be compliant with the
- ASHRAE 34 Standards
- CMR-588 & CMR-528
- ASME Boiler and Pressure Vessel Code
- All of the Above
11: 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
12: 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
13: A class A3 refrigerant is considered
- toxic and somewhat flammable
- non-toxic but highly flammable
- toxic and non-flammable
- non-toxic and non-flammable
14: How many refrigerant classifications are there for toxicity?
- 1
- 2
- 5
- 3
15: What type of relief valve is used on a CO2 system?
- glove disc
- gate valve
- rupture disc
- fusible plug
16: Insurance companies shall forward each inspection report of all refrigeration or A/C systems to the Chief of Inspections within
- 30 days
- 2 months
- 1 week
- 14 days
17: 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)
- institutional occupancy
- commercial occupancy
- public assembly occupancy
- illegal occupancy
18: A premise where large numbers of people congregate and from which occupants can not quickly vacate the space is considered
- commercial occupancy
- public assembly occupancy
- institutional occupancy
- mixed occupancy
19: Where are the three places that the discharge from an ammonia relief valve be piped?
- atmosphere, tank containing water, where the A.H.J. indicates
- underground, into drain, into mechanical room
- to chemical neutralizing tank only
- none of the above
20: Pressure limiting devices are not required for systems containing less then ________ refrigerants.
- 6.6 lbs
- 44 lbs
- 13.9 lbs
- 22 lbs
21: The certificate of inspection
- shall be posted on the compressor shell or electrical panel at the unit
- shall be authorized by a notarized insurance company
- shall be posted and protected from dirt, water, and other elements
- shall be $20 and an additional fee of $1 for each tone above 20 tons
22: A relief valve shall be located at least ___ above grade.
- 36'
- 10'
- 15'
- 25'
23: What refrigerant doesn't have to be classifted?
- R-711
- R-718
- R-134a
- R-717
24: Before you change the type of refrigerant in a refrigeration system, what three things must be done?
- you can never change refrigerants
- Place sign, check for leaks, and insulate suction line
- Nothing must be done
- Make sure its compatible, notify owner, and notify AHJ.
25: What would be the classification of a church?
- Institutional
- Industrial
- Place of assembly
- Large mercantile