Topics: ASHRAE/CMR
1: An example of direct system is
- rooftop unit
- chiller
- absorber
- none of the above
2: What must be done to refrigerant pipes before being buried?
- Coated
- Encased
- Leaked checked
- Certified
3: When a receiver is greater than 3 cubic feet but less than 10 cubic feed, what is the minimum relief device required?
- fusible plug
- relief valve
- rupture disc
- all of the above
4: When is the space above a drop ceiling calculated as space for refrigerant limit quantities?
- When it's used as part of a supply or return air system
- When there is a space 6' or more above it
- When its white
- When there are sprinklers above
5: Class 3 refrigerants are
- highly flammable
- toxic
- non-flammable
- non-toxic
6: Most CFC's are
- flammable
- inert but toxic
- toxic
- inert
7: Trichlorofluoromethane is the name of what refrigerant?
- R-502
- R-12
- R-113
- R-11
8: A professional or office building would be considered what type of occupancy?
- commercial
- mercantile
- public assembly
- business
9: The 522 CMR 9.00 has adopted for reference ASHRAE ____
- 25
- 15
- III
- 10
10: How many CFMs are required per square foot of commercial office occupied space
- 20 CFM
- 15 CFM
- 5 CFM
- .5 CFM
11: How far from the ground does a relief valve need to be?
- Not more than 3' above grade
- At least 15' above grade
- At least 20' above grade
- At least 25' above grade
12: Pressure vessels having an inside diameter of 6” or less shall be protected by
- either a fusible plug or a pressure relief device
- a fusible plug
- Pressure vessels having an inside diameter of 6” or less need no such protection unless otherwise specified
- a pressure relief device
13: R-12. R-22, and R-40 are considered Group I refrigerants.
- True
- False
14: Where a refrigeration or air conditioning system is installed,
- The company who installed the system must notify the fire department in the jurisdiction where installed
- it shall not be operated below prescribed pressuers
- A field inspection shall be made before it is put into service
- the form or certificate shall be authorized by the Department of Public Safety
15: What type refrigerant is NOT ozone depleting?
- CFC
- Halon
- HFC
- HCFC
16: copper and its alloys shall not be used in contact with _____ except as a component of bronze alloys for bearing or other non-refrigerant containing uses.
- ammonia
- HCFC-123
- CFC-11
- Lithium bromide
17: pressure relief valves must discharge to the atmosphere at a location not less than 15 feet from ground level and ____ feet from any window, ventilation opening, or exits of buildings.
- 20
- 25
- 10
- 15
18: Pressure relief devices are marked with a ____________ signifying compliance with the ASME Boiler & Pressure Vessel Code.
- UM or UL
- UV or UR
- UL and UM
- UL and UR
19: Joints in piping for refrigeration containing parts must withstand temperatures of ___?
- 800F
- 600F
- 700F
- 1000F
20: Ammonia can come in contact with _______ ?
- Brass
- Copper
- Aluminum
- Copper tubing
21: The Department that certifies the transportation of refrigerant is the
- RSES
- EPO
- DOT
- EPA
22: A room having machinery but no flame producing apparatus permanently installed and operated is considered a
- Class B machinery room
- Class M machinery room
- Class A machinery room
- Class T machinery room
23: How many groups of refrigerants are there?
- 3
- 1
- 5
- 7
24: What refrigerant doesn't have to be classifted?
- R-134a
- R-711
- R-717
- R-718
25: A Category D fluid
- is when the fluid handled is non flammable, nontoxic, and not damaging to human as defined in ANSI/ASME Process Piping.
- is when the design pressure does not exceed 150 psi
- a fluid for service piping in which the potential for personnel exposure is judged to cause harm and irreversible damage to those persons exposed to it
- Both a and b are correct