Topics: ASHRAE/CMR
1: 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
2: What section of ASHRAE-15 governs pressure vessels?
- Section 9 ASHRAE-15 ASME VIII unfired
- Section 6 ASHRAE-34 ASME VIII unfired
- Section 7 ASHRAE-15 ASME VIII fired
- OSHA
3: 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
4: When is the only time you can leave a service container attached to a system?
- Leaking system
- Recovery
- Charging
- Both b and c
5: What do you need to do when you install a new system?
- Add refrigerant
- Insulate the suction line before you take a superheat reading
- Document the superheat and subcooling reading
- Have it inspected
6: How many groups of refrigerants are there?
- 3
- 5
- 7
- 1
7: 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 R-718
- Flush with ammonia
- Flush with RX-11
- Flush with R-11
8: The Department that certifies the transportation of refrigerant is the
- EPA
- DOT
- RSES
- EPO
9: What must be done if refrigeration lines pass through a concrete floor?
- leak checked
- moisture barrier
- insulated
- installed through a pipe casing
10: When an inspection is needed, how often must it be done?
- every 36 months
- every 24 months
- every 18 months
- annually
11: What refrigerant is an inorganic compound?
- Ammonia
- R-410A
- R-132A
- R-22
12: The 522 CMR 9.00 has adopted for reference ASHRAE ____
- III
- 10
- 25
- 15
13: The main purpose of a refrigerant detector in a machinery room is to
- inform there is a refrigerant leak int he system
- detect toxins in the air caused by a refrigerant leak
- to set off an alarm when there is refrigerant present inside the room
- all of the above
14: What would be the classification for Stop & Shop grocery store?
- Large mercantile
- Industrial
- Place of assembly
- Instituional
15: What refrigerant were phased out in 2004?
- R-11
- R-22
- R-134a
- R-12
16: A room having machinery but no flame producing apparatus permanently installed and operated is considered a
- Class M machinery room
- Class B machinery room
- Class A machinery room
- Class T machinery room
17: A pressure relief should be located at least _______ from windows and doors.
- 25'
- 15'
- 30'
- 20'
18: What type of copper is not permitted on refrigeration systems?
- Type K
- Type N
- Type L
- Type M
19: Pressure vessels nameplate markings must be compliant with the
- ASHRAE 34 Standards
- CMR-588 & CMR-528
- ASME Boiler and Pressure Vessel Code
- All of the Above
20: When is the space above a drop ceiling calculated as space for refrigerant limit quantities?
- When there is a space 6' or more above it
- When its white
- When it's used as part of a supply or return air system
- When there are sprinklers above
21: 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)
22: What kind of material can't be used on the outlet of a relief valve?
- Stainless Steel
- Copper
- PVC
- Aluminum
23: A relief valve discharge capacity is rated in
- PSIG
- temperature minus pounds of air per second divided by release rate squared
- Pounds of air per minute.
- PSIA
24: What type of refrigerants are NOT flammable?
- CHC
- HFC
- HCFC
- All of the above
25: A pressure-limiting device isn't required on a factory-sealed system containing less than ____ lbs.
- 66
- 50
- 25
- 22