Topics: ASHRAE/CMR
1: The certificate of inspection
- shall be posted and protected from dirt, water, and other elements
- shall be $20 and an additional fee of $1 for each tone above 20 tons
- shall be authorized by a notarized insurance company
- shall be posted on the compressor shell or electrical panel at the unit
2: Where must a refrigeration contractor's license number be displayed?
- Trucks, invoices, and advertising
- Truck, office, every job, and on all equipment
- Trucks, license plates, and uniforms
- Uniforms, checks, and invoices.
3: 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.
- 50
- 550
- 350
- 100
4: R-410A is classified as a ____ refrigerant on the safety matrix.
- A-1
- B-2
- B-1
- A-2
5: Fusible plugs must have what marked on them?
- Melting temperature in F
- Melting temperature in C
- Opening pressure
- All of the above
6: Machinery rooms must be vented to ______?
- neutralizing tank
- basement
- outdoors
- unoccupied spaces
7: The color code of a tank of ammonia is
- white
- light green
- lavender
- silver
8: Large mercantile occupancy is
- a premise of that portion of a premise where more than 50 persons congregate on levels above of below street level to purchase personal merchandise.
- a premise or that portion of a premise where more than 1500 persons congregate on levels above or below street level to purchase personal merchandise
- a premise or that portion of a premise where more than 200 persons congregate on levels above or below street level to purchase personal merchandise
- a premise of that portion of a premise where more than 100 persons congregate on levels above of below street level to purchase personal merchandise.
9: What pipe can not be used for refrigeration?
- M
- L
- N
- K
10: When should a relief valve start to function?
- Before the purge station discharges
- 10 psi before it's set pressure
- Two times it's working pressure
- At it's set pressure
11: A pressure-limiting device isn't required on a factory-sealed system containing less than ____ lbs.
- 50
- 25
- 22
- 66
12: All welding done on any refrigeration system or piping covered by 522 CMR 9.00 shall be performed by a according to Section IX of the ASME code
- licensed welder
- welder qualified
- competent welder
- licensed technician
13: How many refrigerant classifications are there for toxicity?
- 3
- 1
- 2
- 5
14: 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
15: A class B1 refrigerant is considered
- toxic but non-flammable
- non-toxic but highly flammable
- non-toxic and non-flammable
- toxic and somewhat flammable
16: There can be no airflow from an occupied space through a machine room unless what?
- System is high velocity
- System is ducted and sealed
- Duct is not located in the ceiling
- None of the above.
17: What was the main reason for enacting the no venting rule of July 1, 1992?
- Ozone depletion
- Green house effect
- Global warming potential
- All of the above
18: Group A2 refrigerants have a ______ toxicity rating than Group B1 refrigerants.
- lower
- the same
- there is no Group B1 refrigerants
- higher
19: The total amount of refrigerant stored in a machinery room in all containers not provided with relief valves shall not exceed
- 55 lbs
- 500 lbs
- 660 lbs
- 330 lbs
20: R-717 is
- ammonia
- trichloromethane
- water
- carbon dioxide
21: What kind of material can't be used on the outlet of a relief valve?
- PVC
- Stainless Steel
- Aluminum
- Copper
22: A premise or that portion of a premise where people transact business, receive personal service, or purchase foods, other goods is considered a
- public assembly occupancy.
- mercantile occupancy
- business occupancy
- commercial occupancy
23: A relief valve shall be located at least ___ above grade.
- 36'
- 15'
- 25'
- 10'
24: What type refrigerant is NOT ozone depleting?
- HCFC
- HFC
- Halon
- CFC
25: What is R-22?
- Chlorofluoromethane
- CCFCM
- Chlorodifluoromethane
- HFC