Topics: ASHRAE/CMR
1: How much refrigerant can be stored in a mechanical room outside of the system?
- 330
- 100
- 150
- 200
2: Who authorizes changes to the safety codes?
- Person who pulled the permit
- Person in charge of the facility
- Board of Boilers
- Contractor who last serviced the system.
3: What type of copper is not permitted on refrigeration systems?
- Type N
- Type K
- Type M
- Type L
4: 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
- 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
- it shall not be operated below prescribed pressuers
5: What type of material can't be used on the outlet of a relief valve?
- PVC
- Stainless steel
- Copper
- Magnesium alloy
6: 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
7: What would be the classification of a prison?
- Institutional
- Industrial
- Large mercantile
- Place of assembly
8: A relief valve discharge capacity is rated in
- PSIG
- PSIA
- temperature minus pounds of air per second divided by release rate squared
- Pounds of air per minute.
9: How many CFMs are required per square foot of commercial office occupied space
- .5 CFM
- 15 CFM
- 5 CFM
- 20 CFM
10: A pressure relief should be located at least _______ from windows and doors.
- 20'
- 25'
- 15'
- 30'
11: What kind of material can't be used on the outlet of a relief valve?
- PVC
- Stainless Steel
- Aluminum
- Copper
12: Single compound Refrigerants are classified by what two criteria?
- Flammability and temperature range
- Temperature range and hazardousness
- Weight and color
- Flammability and toxicity
13: R-22 is considered a(n)
- CFC
- HCFCH
- HFC
- HCFC
14: How much clearance do you need around the perimeter of electrical panels?
- 12"
- 24"
- 36"
- 18"
15: The Board of Boilers adopts by reference
- the 1997 ANSI/ASHRAE Safety Code
- Montreal Protocol Safety Code
- MSCA Code
- the MACS Pressure Vessel Code of Massachusetts
16: When air is ducted through a machine room that services occupied space, What must be done?
- Ducted and sealed
- Welded and seamed.
- Flanged and gasketed
- Insulated and cross broke
17: Group A3 refrigerants have a ______ flammability rating than Group B1 refrigerants
- lower
- the same
- there is no Group B1 refrigerants
- higher
18: When a refrigerating machinery room is used, the emergency procedures shall be posted
- inside the room, immediately adjacent to each door
- on a conspicuous card located near the compressor
- on a conspicuous card located near the evaporator
- outside the room, immediately adjacent to each door
19: Refrigeration piping before being buried shall be
- leak tested
- encased in pipe duct
- pressure tested
- All of the above
20: Ammonia is under what safety classification?
- B2
- B3
- A3
- B1
21: The test pressure applied to the high side of each factory-assembled refrigerating system shall be at least equal to the design pressure of
- the high side
- the aggregate of the high side and low side
- 2.5 times the design pressure
- the low side
22: The total amount of refrigerant stored in a machinery room in all containers not provided with relief valves shall not exceed
- 660 lbs
- 550 lbs
- 55 lbs
- 330 lbs.
23: Trichlorofluoromethane is the name of what refrigerant?
- R-502
- R-11
- R-12
- R-113
24: Which refrigerant class listed below is the most flammable?
- B2
- A3
- A2
- C3
25: When is the space above a drop ceiling calculated as space for refrigerant limit quantities?
- When its white
- When it's used as part of a supply or return air system
- When there are sprinklers above
- When there is a space 6' or more above it