Topics: ASHRAE/CMR
1: What is the minimum size of the discharge pipe?
- Same size as the outlet of the relief valve
- One pipe size larger that the inlet of the relief valve
- Depends on size of manifold
- All of the above
2: Which refrigerant was still able to be vented to the atmosphere after July 1, 1992?
- R-22
- R-12
- R-113
- R-11
3: Large vessels containing refrigerant ______________________ from using two or more pressure-relief devices in parallel to obtain the required capacity.
- of Group B2 refrigerant shall be prohibited
- shall not be prohibited
- containing R-11, R-123 & R-717 exclusively shall not be prohibited
- shall be prohibited
4: 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
5: The total amount of refrigerant stored in a machinery room in all containers not provided with relief valves shall not exceed
- 660 lbs
- 330 lbs
- 55 lbs
- 500 lbs
6: What is the minimum height refrigeration piping should be placed against walls?
- 6'
- 72"
- Ceiling height
- 7.25'
7: The Department that certifies the transportation of refrigerant is the
- EPO
- DOT
- EPA
- RSES
8: Direct systems using Group II refrigerants
- shall be allowed to be used for human comfort.
- shall be installed in Class T machinery rooms
- shall not be used for air condition for human comfort
- shall be installed per instruction of the AHJ
9: A High-Probability System
- 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 the occupied space
- is a system highly likely to leak form a failed connection or component of such system
- is such that a leak of refrigerant from a failed connection will enter an unoccupied space
10: Machinery rooms shall be vented to _____________ and utilizing mechanical ventilation.
- the mechanical room housing the refrigeration system
- the outdoors
- Machinery rooms need not be vented
- the return air ducted system
11: When should a relief valve start to function?
- 10 psi before it's set pressure
- At it's set pressure
- Two times it's working pressure
- Before the purge station discharges
12: Insurance companies shall forward each inspection report of all refrigeration or A/C systems to the Chief of Inspections within
- 2 months
- 14 days
- 30 days
- 1 week
13: Evaporators located ____inches of a heating coil shall be equipped whit a pressure relief device.
- 15
- 18
- 24
- 10
14: What is not a requirement of a Class T machine room?
- Automatic ventilation
- Fire hose connected to the building fire protection system.
- Tight fitting doors
- Self-closing doors
15: Halogenated refrigerants cannot be used with what material?
- Magnesium alloy
- Stainless steel
- Copper
- Aluminum
16: Machinery rooms must be vented to ______?
- neutralizing tank
- outdoors
- unoccupied spaces
- basement
17: What is not a requirement of a class T machine room?
- fire hose connection to the building fire protection system
- automatic ventilation
- tight fitting doors
- self-closing doors
18: What section governs pressure vessels?
- Section 1 ASHREA 15 ASME fired
- Section 8 ASHREA 15 ASME unfired
- OSHA
- Section ASHREA 34
19: How many different groups of refrigerants are there?
- 7
- 11
- 15
- 3
20: A 3-cubic foot receiver must have what type of relief valve?
- fusible plug
- relief valve
- rupture device
- none of the above
21: Which refrigerant class listed below is the most flammable?
- A-1
- B-2
- C-3
- A-3
22: R-22 is considered a(n)
- CFC
- HCFC
- HCFCH
- HFC
23: A movie theater would be considered a
- commercial occupancy
- institutional occupancy
- public assembly occupancy
- mixed occupancy
24: 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
25: What do you need to do when you install a new system?
- Add refrigerant
- Insulate the suction line before you take a superheat reading
- Have it inspected
- Document the superheat and subcooling reading