Topics: ASHRAE/CMR
1: Low temperature systems should have what?
- High pour point
- Low pour point
- High viscosity
- None of the above
2: What is Trichlorotrifluoromethane?
- R-12
- R-13
- R-113
- R-11
3: 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.
4: Class A refrigerants are considered
- toxic
- non-flammable
- non-toxic
- flammable
5: Halogenated refrigerants cannot be used with what material?
- Stainless steel
- Magnesium alloy
- Aluminum
- Copper
6: Stop valves shall not be permitted between the system and the
- bleed valve
- relief valve
- condenser
- service valve
7: The discharge relief valve is located (9.4.6)
- on top of the condensor
- between the compressor and oil separator
- between the compressor and reciever
- between the compressor and the stop valve
8: A machine room with a refrigerant system using ammonia shall
- be provided with a continuously operated ventilation system
- be considered a non-hazardous location in accordance with National Electrical code
- have no flame producing apparatus permanently installed and operated
- All of the above
9: The Board of Boilers adopts by reference
- MSCA Code
- Montreal Protocol Safety Code
- the 1997 ANSI/ASHRAE Safety Code
- the MACS Pressure Vessel Code of Massachusetts
10: Large Mercantile occupancy is a premise or that portion of a premise where more than ____ persons congregate on levels above or below the street level to purchase personal merchandise.
- 250
- 100
- 350
- 400
11: What is the refrigerant chlorodifluoromethane?
- R-134a
- R-12
- R-22
- R-123
12: Before you change the type of refrigerant in a refrigeration system, what three things must be done?
- Make sure its compatible, notify owner, and notify AHJ.
- Place sign, check for leaks, and insulate suction line
- Nothing must be done
- you can never change refrigerants
13: Refrigerant restricted in 2004 but used for transition for decades:
- R-123
- R-22
- R-134A
- R-11
14: Insurance companies shall forward each inspection report of all refrigeration or A/C systems to the Chief of Inspections within
- 1 week
- 2 months
- 14 days
- 30 days
15: What type refrigerant is NOT ozone depleting?
- HCFC
- HFC
- CFC
- Halon
16: How many groups of refrigerants are there?
- 3
- 5
- 7
- 1
17: When this is installed on the high side of a system, it must be capable of reading 1.2 times the design pressure (ASHRAE 15 9.11.3)
- Pressure gauge
- Temperature gauge
- Sight glass gauge
- All of the above
18: What section governs pressure vessels?
- OSHA
- Section ASHREA 34
- Section 8 ASHREA 15 ASME unfired
- Section 1 ASHREA 15 ASME fired
19: 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
20: When a receiver is greater than 3 cubic feet but less than 10 cubic feed, what is the minimum relief device required?
- fusible plug
- relief valve
- rupture disc
- all of the above
21: 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
22: Machinery rooms must be vented to ______?
- unoccupied spaces
- neutralizing tank
- basement
- outdoors
23: Can you use Ammonia in industrial applications?
- Yes, always
- Yes, Under certain condidtions
- No, never
- When mixed with R-718
24: Before you change the type of refrigerant in a refrigeration system, what three things must be done?
- you can't change refrigerants
- nothing must be done
- make sure it's compatible, notify owner, notify A.H.J
- place sign, check for leaks, insulate
25: R-22 is classified as a ____ refrigerant on the safety matrix.
- B-2
- A-1
- A-2
- B-1