Topics: ASHRAE/CMR
1: How many refrigerant classifications are there for flammability?
- 2
- 7
- 1
- 3
2: Name an HCFC refrigerant(s):
- R-22
- R-123
- R-11
- both a & b
3: Ashrae states that the equipment on a building needs to conform to adjacent buildings classifications when within ____ feet from opening and intakes.
- 75
- 50
- 15
- 20
4: Refrigerant restricted in 2004 but used for transition for decades:
- R-134A
- R-22
- R-123
- R-11
5: Can a R22 line set be reused for a 410A system and if it can be reused, what must be done to it?
- Flush with RX-11
- Flush with ammonia
- Flush with R-11
- Flush with R-718
6: A machine room with a refrigerant system using ammonia shall
- be provided with a continuously operated ventilation system
- be considered a non-hazardous location in accordance with National Electrical code
- have no flame producing apparatus permanently installed and operated
- All of the above
7: The color code of a tank of ammonia is
- silver
- white
- lavender
- light green
8: Ammonia can come in contact with _______ ?
- Brass
- Aluminum
- Copper tubing
- Copper
9: What is Trichlorotrifluoromethane?
- R-11
- R-13
- R-113
- R-12
10: Halogen refrigerants are corrosive to which type of metal?
- black iron
- stainless steel
- magnesium
- copper
11: What do you need to do when you install a new system?
- Insulate the suction line before you take a superheat reading
- Have it inspected
- Add refrigerant
- Document the superheat and subcooling reading
12: When must refrigeration system covered by the code be inspected?
- Upon installation
- Not required
- Annually
- Annually and when installed
13: A High-Probablity system
- is such that a leak of refrigerant from failed connections will enter the unoccupied 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 failed connections will enter the occupied space
- is a system highly likely to leak from a failed connection or component of such system
14: 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.
- 350
- 400
- 250
- 100
15: Where are the three places that the discharge from an ammonia relief valve be piped?
- atmosphere, tank containing water, where the A.H.J. indicates
- underground, into drain, into mechanical room
- to chemical neutralizing tank only
- none of the above
16: What section governs pressure vessels?
- Section 1 ASHREA 15 ASME fired
- Section ASHREA 34
- OSHA
- Section 8 ASHREA 15 ASME unfired
17: How many refrigerant classifications are there for toxicity?
- 5
- 3
- 2
- 1
18: The total amount of refrigerant stored in a machinery room in all containers not provided with relief valves shall not exceed
- 330 lbs.
- 660 lbs
- 55 lbs
- 550 lbs
19: What type of refrigerants are NOT flammable?
- CHC
- HFC
- HCFC
- All of the above
20: What refrigerant doesn't have to be classifted?
- R-134a
- R-717
- R-711
- R-718
21: A class B2 refrigerant is considered
- non-toxic and non-flammable
- non-toxic and highly flammable
- toxic and non-flammable
- toxic and somewhat flammable
22: Refrigeration devices shall be equipped with a ____ to protect against unexpected pressure due to a malfunction or fire?
- Temperature limiter device
- Relief valve
- Circuit Breaker
- T&P device
23: Which refrigerant class listed below is the most flammable?
- A2
- A3
- B2
- C3
24: When should a relief valve start to function?
- Before the purge station discharges
- Two times it's working pressure
- At it's set pressure
- 10 psi before it's set pressure
25: A plug containing an alloy that will melt at a specific temperature to relief pressure is a
- fusion plug
- relief plug
- rupture plug
- fusible plug