Topics: ASHRAE/CMR
1: R-11 belongs to Group
- A-2
- A-1
- B-3
- B-1
2: The Board of Boilers adopts by reference
- the MACS Pressure Vessel Code of Massachusetts
- MSCA Code
- Montreal Protocol Safety Code
- the 1997 ANSI/ASHRAE Safety Code
3: What happens after your initial inspection of a pressure vessel?
- Notify the AHJ to let them know that the system been inspected
- 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 Fire Marshal that the system has been inspected and approved
4: Machinery rooms must be vented to ______?
- unoccupied spaces
- basement
- outdoors
- neutralizing tank
5: What is not a requirement of a class T machine room?
- self-closing doors
- tight fitting doors
- automatic ventilation
- fire hose connection to the building fire protection system
6: Which refrigerant class listed below is the most flammable?
- A2
- A3
- B2
- C3
7: Relief valves are rated in
- pounds of air per minute
- pounds of air per hour
- gallons of water per hour
- gallons of water per minute
8: How many refrigerant classifications are there for toxicity?
- 5
- 2
- 1
- 3
9: What would be the classification of a prison?
- Large mercantile
- Place of assembly
- Industrial
- Institutional
10: How far from the ground does a relief valve need to be?
- Not more than 3' above grade
- At least 20' above grade
- At least 25' above grade
- At least 15' above grade
11: A professional or office building would be considered what type of occupancy?
- public assembly
- commercial
- mercantile
- business
12: How many different groups of refrigerants are there?
- 7
- 11
- 3
- 15
13: R-123 belongs to Group
- A-3
- B-3
- B-2
- B-1
14: Which refrigerant(s) is an HFC?
- R-22
- R-410A
- R-502
- All of the above
15: Group A3 refrigerants have a ______ flammability rating than Group B1 refrigerants
- lower
- higher
- the same
- there is no Group B1 refrigerants
16: What kind of material can't be used on the outlet of a relief valve?
- Stainless Steel
- Copper
- Aluminum
- PVC
17: When an inspection is needed, how often must it be done?
- every 36 months
- annually
- every 24 months
- every 18 months
18: Can you use Ammonia in industrial applications?
- No, never
- Yes, always
- Yes, Under certain condidtions
- When mixed with R-718
19: Before you change the type of refrigerant in a refrigeration system, what three things must be done?
- make sure it's compatible, notify owner, notify A.H.J
- you can't change refrigerants
- place sign, check for leaks, insulate
- nothing must be done
20: A class B2 refrigerant is considered
- non-toxic and non-flammable
- toxic and somewhat flammable
- toxic and non-flammable
- non-toxic and highly flammable
21: What type of material can't be used on the outlet of a relief valve?
- PVC
- Magnesium alloy
- Stainless steel
- Copper
22: Which refrigerant class listed below is the most flammable?
- A-3
- A-1
- B-2
- C-3
23: A pressure vessel having an inside diameter of 6” or less shall be sufficient to withstand ____times the pressure of the saturation temperature of the refrigerant or ____times the critical pressure of the refrigerant, whichever is less.
- 2.5, 2.5
- 6.6, 6.6
- 3.0, 3.5
- 2.5, 3.0
24: Pressure-limiting device isn't required on a factory-sealed system containing less than ____ lbs.
- 18
- 22
- 33
- 50
25: Name an HCFC refrigerant(s):
- R-22
- R-123
- R-11
- both a & b