Topics: ASHRAE/CMR
1: When must refrigeration system covered by the code be inspected?
- Annually
- Not required
- Upon installation
- Annually and when installed
2: 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
- compressor
- evaporator
- boiler
- outside the machinery room
3: Ammonia can come in contact with _______ ?
- Copper tubing
- Copper
- Aluminum
- Brass
4: Which occupancy can ammonia be used in?
- depends on the quantity of freon
- redifential
- industrial
- commercial
5: Large vessels containing refrigerant ______________________ from using two or more pressure-relief devices in parallel to obtain the required capacity.
- containing R-11, R-123 & R-717 exclusively shall not be prohibited
- of Group B2 refrigerant shall be prohibited
- shall be prohibited
- shall not be prohibited
6: Refrigerant restricted in 2004 but used for transition for decades:
- R-22
- R-134A
- R-123
- R-11
7: Name an HCFC refrigerant(s):
- R-22
- R-123
- R-11
- both a & b
8: A premise where large numbers of people congregate and from which occupants can not quickly vacate the space is considered
- commercial occupancy
- institutional occupancy
- public assembly occupancy
- mixed occupancy
9: What refrigerant is an inorganic compound?
- R-22
- R-410A
- Ammonia
- R-132A
10: Ammonia (NH3) is a group III refrigerant
- True
- False
11: What does safe access mean?
- OSHA approved
- A clear unobstructed path to the equipment and controls
- Locked doors
- Well-lit exit signs
12: Insurance companies shall forward each inspection report of all refrigeration or A/C systems to the Chief of Inspections within
- 14 days
- 1 week
- 30 days
- 2 months
13: 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 low side
- the high side
- the aggregate of the high side and low side
- 2.5 times the design pressure
14: Halo-carbon refrigerants cannot be used with what material?
- Aluminum
- Magnesium alloy
- Copper
- Stainless Steel
15: When is the space above a drop ceiling calculated as space for refrigerant limit quantities?
- When there are sprinklers above
- When it's used as part of a supply or return air system
- When its white
- When there is a space 6' or more above it
16: The Board of Boilers adopts by reference
- MSCA Code
- the 1997 ANSI/ASHRAE Safety Code
- the MACS Pressure Vessel Code of Massachusetts
- Montreal Protocol Safety Code
17: Which refrigerant class listed below is the most flammable?
- A-3
- C-3
- A-1
- B-2
18: 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.
19: What type of relief valve is used on a CO2 system?
- rupture disc
- gate valve
- glove disc
- fusible plug
20: What section governs pressure vessels?
- Section 8 ASHREA 15 ASME unfired
- Section 1 ASHREA 15 ASME fired
- Section ASHREA 34
- OSHA
21: A premise or that portion of a premise where people transact business, receive personal service, or purchase foods, other goods is considered a
- business occupancy
- mercantile occupancy
- commercial occupancy
- public assembly occupancy.
22: 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
- 15
- 75
- 55
23: When testing systems using non-positive displacement compressors, the entire system shall be considered for test purposes as the low side.
- True
- False
24: A class B1 refrigerant is considered
- toxic and somewhat flammable
- toxic but non-flammable
- non-toxic and non-flammable
- non-toxic but highly flammable
25: Ammonia is under what safety classification?
- B1
- A3
- B3
- B2