Massachusetts Refrigeration Tech/Contractors practice quiz
ASHRAE/CMR code Prep Quiz
Topics: ASHRAE/CMR
1: What is not a requirement of a Class T machine room?
Self-closing doors
Fire hose connected to the building fire protection system.
Tight fitting doors
Automatic ventilation
2: Indirect systems using Group II refrigerants
shall be used in refrigeration system less than 1,000 lbs
shall be used in refrigeration system in excess of 1,000 lbs
shall be used for mechanical equipment only
shall have all refrigerant containing parts except piping, installed in a Class T machine room
3: R-717 is
trichloromethane
carbon dioxide
ammonia
water
4: Ammonia shall be discharged into ____________ or a tank containing one gallon of water for every pound of ammonia.
the atmosphere
a de-pressurized recovery tank with a silver top and yellow bottom
a tank containing two pounds of a water/lithium bromide mix for every pound of ammonia
All of the above
5: All machine rooms must be outfitted with a detector that _______?
activates an audible alarm
activates a visual alarm
starts the ventilation system
All of the above
6: Group A1 refrigerants over ____ pounds in a system must discharge to the atmosphere
1,000
6.6
110
330
7: Who authorizes changes to the safety codes?
Board of Boilers
Contractor who last serviced the system.
Person who pulled the permit
Person in charge of the facility
8: Liquid shall not occupy more than ____ of the volume when the temperature of the refrigerant is 90F.
90%
100%
75%
80%
9: What would be the classification for Stop & Shop grocery store?
Place of assembly
Large mercantile
Industrial
Instituional
10: 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
11: Low temperature systems should have what?
High pour point
Low pour point
High viscosity
None of the above
12: R-22 is considered a(n)
HFC
HCFC
HCFCH
CFC
13: 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.
100
350
250
400
14: A restaurant is classified as a
public assembly occupancy
mixed occupancy
commercial occupancy
large mercantile occupancy
15: What refrigerant has zero ozone depletion
HFC
CFC
HCFC
None of the above
16: What refrigerant is an inorganic compound?
R-22
R-132A
Ammonia
R-410A
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: What is not a requirement of a class T machine room?
self-closing doors
automatic ventilation
tight fitting doors
fire hose connection to the building fire protection system
19: A total of all group A-2,B-2, A-3, and B-3 refrigerants shall not exceed ____ lb in the occupied areas and machinery rooms of institutional occupancies.
350
50
100
550
20: What type of material can't be used on the outlet of a relief valve?
PVC
Magnesium alloy
Stainless steel
Copper
21: Which refrigerant replaced R-12?
R-134A
R-410A
R-22
R-407A
22: What must be done to refrigerant pipes before being buried?
Certified
Coated
Leaked checked
Encased
23: What section governs pressure vessels?
Section ASHREA 34
Section 1 ASHREA 15 ASME fired
Section 8 ASHREA 15 ASME unfired
OSHA
24: The ASHRAE Standard 34 requires what type of alarm for equipment rooms using HCFC-123?