Topics: ASHRAE/CMR
1: Pressure vessels having an inside diameter of 6” or less shall be protected by
- Pressure vessels having an inside diameter of 6” or less need no such protection unless otherwise specified
- a fusible plug
- either a fusible plug or a pressure relief device
- a pressure relief device
2: Institutional occupancy is
- a premise or that portion of a premise where large numbers of people congregate and from which occupants cannot quickly vacate the space.
- a premise or that portion of a premise from which, because they are disabled, debilitated, or confined, occupants cannot readily leave without the assistance of others.
- a premise or that portion of a premise where people transact business, receive personal service, or purchase food and other goods.
- None of the above
3: The certificate of inspection
- shall be authorized by a notarized insurance company
- shall be $20 and an additional fee of $1 for each tone above 20 tons
- shall be posted and protected from dirt, water, and other elements
- shall be posted on the compressor shell or electrical panel at the unit
4: Joints in refrigeration piping must be _____ before being covered?
- Pressurized
- Leak tested
- Insulated
- Inspected
5: What refrigerant were phased out in 2004?
- R-134a
- R-22
- R-12
- R-11
6: What type of copper is not permitted on refrigeration systems?
- Type N
- Type K
- Type M
- Type L
7: What type refrigerant is NOT ozone depleting?
- CFC
- HFC
- HCFC
- Halon
8: Fusible plugs must have what marked on them?
- Melting temperature in F
- Melting temperature in C
- Opening pressure
- All of the above
9: A movie theater would be considered a
- institutional occupancy
- public assembly occupancy
- mixed occupancy
- commercial occupancy
10: Refrigerant restricted in 2004 but used for transition for decades:
- R-123
- R-11
- R-134A
- R-22
11: Low temperature systems should have what?
- High pour point
- Low pour point
- High viscosity
- None of the above
12: The 522 CMR 9.00 has adopted for reference ASHRAE ____
- 25
- 15
- 10
- III
13: High pressure controls should be set no higher than
- 10% of set point
- 25% of set point
- 80% of set point
- 90% of set point
14: A premise where large numbers of people congregate and from which occupants can not quickly vacate the space is considered
- mixed occupancy
- public assembly occupancy
- institutional occupancy
- commercial occupancy
15: How many flammability classifications are refrigerants in?
- 2
- 5
- 3
- 7
16: A class A3 refrigerant is considered
- toxic and non-flammable
- toxic and somewhat flammable
- non-toxic but highly flammable
- non-toxic and non-flammable
17: What is a Category "D" fluid?
- A toxic fluid, which can produce serious irreversible harm to persons on breathing or bodily contact
- Any fluid that exceeds 150 psig and has design temperature of over 366F
- A typical refrigerant used on newer air conditioning and heat pump ssytems
- A fluid which is nonflammable, nontoxic, not damaging to human tissues, does not exceed 150 psig, and design temperature is between -20F to 366F
18: Pressure-limiting device isn't required on a factory-sealed system containing less than ____ lbs.
- 18
- 33
- 50
- 22
19: A total of all group A-2,B-2, A-3, and B-3 refrigerants shall not exceed ____ lb in the occupied areas and machinery rooms of institutional occupancies.
- 550
- 350
- 50
- 100
20: When can recovered refrigerants be reused?
- They can't
- Only when used in original owner's equipment
- Only if used in 30 days of recovery
- None of the above
21: What pipe can not be used for refrigeration?
- N
- L
- M
- K
22: How much clearance do you need around the perimeter of electrical panels?
- 24"
- 12"
- 18"
- 36"
23: Ammonia belongs to Group
- A-1
- A-2
- B-1
- B-2
24: The color code of a tank of ammonia is
- silver
- white
- light green
- lavender
25: What is the refrigerant chlorodifluoromethane?
- R-22
- R-134a
- R-123
- R-12