Massachusetts Refrigeration Tech/Contractors practice quiz
ASHRAE/CMR code Prep Quiz
Topics: ASHRAE/CMR
1: What type refrigerant is NOT ozone depleting?
CFC
Halon
HCFC
HFC
2: 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 R-11
Flush with R-718
Flush with ammonia
3: Insurance companies shall forward each inspection report of all refrigeration or A/C systems to the Chief of Inspections within
14 days
30 days
2 months
1 week
4: Pressure relief valves shall be marked with the data from
Section VIII Division of the ASME Boiler & Pressure Code
Section IV Division of the ASME Boiler & Pressure Code
Section I Division VIII of ASME Boiler & Pressure Code
Section XIII Division of the ASME Boiler & Pressure Code
5: The 522 CMR 9.00 has adopted for reference ASHRAE ____
III
25
10
15
6: What type of refrigerants are NOT flammable?
CHC
HFC
HCFC
All of the above
7: Which refrigerant replaced R-12?
R-407A
R-134A
R-22
R-410A
8: What is Trichlorotrifluoromethane?
R-11
R-12
R-13
R-113
9: 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
10: Ashrae states that the equipment on a building needs to conform to adjacent buildings classifications when within ____ feet from opening and intakes.
75
50
20
15
11: All serviceable components of a refrigeration system shall be provided with
manufactures instructions on start-up procedures
safe access
name plates with markings referring to pressure and temperature in accordance with ASME Boiler and Pressure Vessel Code
service manuals
12: When is the only time you can leave a service container attached to a system?
Leaking system
Recovery
Charging
Both b and c
13: What must be done to all doors and access points in duct work going through a mechanical room?
Must be hindged
Must be screwed shut
Must be sealed and gasketed
All of the above
14: The dial of a pressure gauge, when installed on the high side of a system be graduated 1.2 times the designed pressure.
True
False
15: According to the 522 CMR Board of Boilers, refrigerant detectors, alarms, and the refrigeration mechanical room ventilating systems shall be tested
regularly
quarterly
annually
bi-annually
16: 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
17: Defined process piping by code CMR (528)
Any piping that conveys a solid, liquid or gas that is not part of the plumbing or fire protection system
Any piping in an industrial space
Any piping in an industrial or commercial space
All of the above
18: Doors communicating with outside from a mechanical room must be?
Steel, approved, weather-stripped
Self-closing, aligned, fire door
Self-closing, wooden, fire door
Self-closing, approved, fire door
19: What would be the classification of a church?
Industrial
Institutional
Place of assembly
Large mercantile
20: Can ammonia be used on domestic system?
no, unless there is proper ventilation system installed
yes
no
yes, for systems under 10 tons
21: R-22 is considered a(n)
HCFCH
HFC
CFC
HCFC
22: What kind of material can't be used on the outlet of a relief valve?
Stainless Steel
PVC
Aluminum
Copper
23: Refrigerant restricted in 2004 but used for transition for decades:
R-11
R-123
R-134A
R-22
24: Most CFC's are
toxic
inert
inert but toxic
flammable
25: Evaporators within 18" of a heating coil must be equipped with a