Topics: ASHRAE/CMR
1: What would be the classification for Stop & Shop grocery store?
- Instituional
- Place of assembly
- Industrial
- Large mercantile
2: NH3 is
- R-508A
- ammonia
- lithium bromide
- R-718
3: How many gallons of water per pound of ammonia do you need?
- 15
- 20
- 1
- 5
4: Refrigerant piping crossing an open space that affords passageway in any building shall not be less than _____ feet above the floor unless piping is located against the ceiling.
- 7.25'
- 7.00'
- 9.00'
- 8'4"
5: Machinery rooms must be vented to ______?
- outdoors
- unoccupied spaces
- basement
- neutralizing tank
6: How far from the ground does a relief valve need to be?
- At least 20' above grade
- At least 25' above grade
- At least 15' above grade
- Not more than 3' above grade
7: 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
8: Methyl Chloride is a halogenated refrigerant and should not come in contact with
- aluminum
- zinc
- magnesium
- all of the above
9: A 3-cubic foot receiver must have what type of relief valve?
- fusible plug
- relief valve
- rupture device
- none of the above
10: When testing systems using non-positive displacement compressors, the entire system shall be considered for test purposes as the low side.
- True
- False
11: How many groups of refrigerants are there?
- 7
- 1
- 5
- 3
12: Large mercantile occupancy is
- 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 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 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.
13: Pressure vessels having an inside diameter of 6” or less shall be protected by
- either a fusible plug or a pressure relief device
- a fusible plug
- Pressure vessels having an inside diameter of 6” or less need no such protection unless otherwise specified
- a pressure relief device
14: Which of the following are considered inorganic refrigerants?
- R-717 and R-718
- 410A and R-407C
- R-500 and R-502
- None of the above
15: The ASHRAE Standard 34 requires what type of alarm for equipment rooms using HCFC-123?
- CO Sensing
- phosgene gas sening
- A group sensing
- refrigerant sensing
16: Industrial occupancy is
- a premise or that portion of a premise that is not open to the public, where access by authorized persons is controlled, and that is used to manufacture, process, or store goods, such as chemicals, food, ice, meat, or petroleum.
- is a premise or that portion of a premise where large number of people congregate and from which occupants cannot quickly vacate the space.
- a premise or that portion of a premise where people transact business, receive personal service, or purchase food and other goods.
- Both a and b are correct
17: Liquid level gauge glasses shall have automatic closing shut off valves, except Bull's eye or reflex type.
- True
- False
18: Field Inspections of refrigeration and A/C systems in Massachusetts shall be made by
- District Engineering Inspectors
- Commissioned Inspectors
- Master licensed Technician
- both a or b
19: Halogenated refrigerants cannot be used with what material?
- Magnesium alloy
- Stainless steel
- Aluminum
- Copper
20: What refrigerant is an inorganic compound?
- R-132A
- R-410A
- Ammonia
- R-22
21: Name three things that must be done when changing refrigeration lubricant?
- Place sign, check for leaks, insulate
- You can't change lubricants.
- Nothing must be done
- Make sure it's compatible, notify owner, notify AHJ
22: Name an HCFC refrigerant(s):
- R-22
- R-123
- R-11
- both a & b
23: What must be done to refrigerant pipes before being buried ?(8.10.4)
- Certified
- Leak checked
- Classifed
- Insulated and installed in a pipe duct (Encased)
24: Refrigeration piping before being buried shall be
- leak tested
- encased in pipe duct
- pressure tested
- All of the above
25: What refrigerant doesn't have to be classifted?
- R-711
- R-718
- R-134a
- R-717