Topics: ASHRAE/CMR
1: 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.
- 400
- 350
- 100
- 250
2: Methyl Chloride is a halogenated refrigerant and should not come in contact with
- aluminum
- zinc
- magnesium
- all of the above
3: Each machinery room shall contain
- smoke and fire alarms as well as three means of egress and that egress must meet 528 CMR ventilation requirements
- a refrigerant detector located in an area where the refrigerant from a leak will concentrate
- high and low pressure controls
- a toxicity detector where the presence of ammonia or lithium bromide from a leak will concentrate
4: A professional or office building would be considered what type of occupancy?
- business
- mercantile
- commercial
- public assembly
5: How many gallons of water do you need per pound of ammonia?
- 1
- 50
- 10
- 100
6: Dual-pressure relief devices should be installed on
- vessels of 3 cubic feet or more
- vessels of 10 cubic feet or less
- vessels of 3 cubic feet or less
- vessels of 10 cubic feet or more
7: The total amount of refrigerant stored in a machinery room in all containers not provided with relief valves shall not exceed
- 660 lbs
- 55 lbs
- 330 lbs.
- 550 lbs
8: When must refrigeration system covered by the code be inspected?
- Annually
- Not required
- Upon installation
- Annually and when installed
9: What should not (and can not) be located between a pressure imposing device and a pressure-limiting device?
- Moisture indicator
- Foot valve
- Muffler
- Stop valve
10: Who is permitted to access a refrigeration machine room?
- Any employee
- Authorized persons only
- Anyone, it's a completely safe area
- Contractors only
11: copper and its alloys shall not be used in contact with _____ except as a component of bronze alloys for bearing or other non-refrigerant containing uses.
- ammonia
- HCFC-123
- Lithium bromide
- CFC-11
12: R-22 is considered a(n)
- CFC
- HFC
- HCFC
- HCFCH
13: What refrigerant doesn't have to be classified?
- R-717
- R-422A
- R-718
- R-134A
14: Ammonia is under what safety classification?
- B2
- B1
- B3
- A3
15: Who approves containers for refrigerants?
- D.O.E
- D.O.T
- D.O.D
- E.P.A
16: A hotel is considered a _______ occupancy.
- mercantile
- residential
- commercial
- institutional
17: Joints in refrigeration piping must be _____ before being covered?
- Inspected
- Leak tested
- Pressurized
- Insulated
18: What type of relief valve is used on a CO2 system?
- rupture disc
- fusible plug
- glove disc
- gate valve
19: Halo-carbon refrigerants cannot be used with what material?
- Magnesium alloy
- Copper
- Stainless Steel
- Aluminum
20: R-22 falls under which safety classification?
- B-1
- B-2
- A-2
- A-1
21: The main cause of enacting the "no vending rule" of July 1st 1992 was
- global warming potential
- ozone depletion
- both a & b
- None of the above
22: Large mercantile occupancy is
- 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.
- 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 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.
23: A High-Probability System
- is such that a leak of refrigerant from a failed connection will enter the occupied space
- is such that any leak will cause injury or death to anyone within a 100 square foot area
- is such that a leak of refrigerant from a failed connection will enter an unoccupied space
- is a system highly likely to leak form a failed connection or component of such system
24: Liquid level gauges shall have _____________ with one exception being that of the liquid level gauge bull’s eye type.
- color-coded glass to determine type of refrigerant
- moisture indicators
- automatic closing shut-off valves
- All of the above
25: Fusible plugs must have what marked on them?
- Melting temperature in F
- Melting temperature in C
- Opening pressure
- All of the above