Topics: ASHRAE/CMR
1: How many flammability classifications are refrigerants in?
- 7
- 2
- 3
- 5
2: The certificate of inspection
- shall be posted and protected from dirt, water, and other elements
- shall be $20 and an additional fee of $1 for each tone above 20 tons
- shall be posted on the compressor shell or electrical panel at the unit
- shall be authorized by a notarized insurance company
3: Pressure vessels having an inside diameter of 6” or less shall be protected by
- a pressure relief device
- either a fusible plug or a pressure relief device
- Pressure vessels having an inside diameter of 6” or less need no such protection unless otherwise specified
- a fusible plug
4: A “U” or “UM” marking a on a nameplate of a pressure vessels signifies compliance with Section VIII of
- the ASME Boiler and Pressure Vessel Code
- Section 11.3.1.5 ASHRAE 15 Standard
- the ANSI Standard 10.7.2
- both the ANSI Standard 10.7.2 and ASHRAE 15 Standard 11.3.1.5
5: There can be no airflow from an occupied space through a machine room unless what?
- System is high velocity
- System is ducted and sealed
- Duct is not located in the ceiling
- None of the above.
6: Who approves containers for refrigerants?
- D.O.T
- D.O.D
- E.P.A
- D.O.E
7: Who authorizes changes to the safety codes?
- Person in charge of the facility
- Contractor who last serviced the system.
- Person who pulled the permit
- Board of Boilers
8: _____ alloys shall not be used in contact with an halogenated refrigerants.
- Copper
- Zinc
- Magnesium
- Nickel
9: What is an egress?
- A valve put on the low side of the system to prevent frosting
- An entrance or exit
- A code violation
- An escape route
10: Who is permitted to access a refrigeration machine room?
- Authorized persons only
- Any employee
- Anyone, it's a completely safe area
- Contractors only
11: System design pressures must take into consideration, not only, pressures found during normal operation but also what?
- When it's cold out
- When there is a malfunction on the high side
- When its warm out
- All of the above
12: 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
13: A pressure relief should be located at least _______ from windows and doors.
- 20'
- 15'
- 25'
- 30'
14: What type of relief valve is used on low pressure centrifugal compressor systems?
- Spring-loaded relief valve
- Rupture disc
- Purge relief
- None of the above
15: When air is ducted through a machine room that services occupied space, What must be done?
- Ducted and sealed
- Insulated and cross broke
- Flanged and gasketed
- Welded and seamed.
16: What would be the classification for Stop & Shop grocery store?
- Instituional
- Large mercantile
- Place of assembly
- Industrial
17: 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.
- 50
- 550
- 350
- 100
18: When this is installed on the high side of a system, it must be capable of reading 1.2 times the design pressure (ASHRAE 15 9.11.3)
- Pressure gauge
- Temperature gauge
- Sight glass gauge
- All of the above
19: Dual-pressure relief devices should be installed on
- vessels of 10 cubic feet or less
- vessels of 10 cubic feet or more
- vessels of 3 cubic feet or more
- vessels of 3 cubic feet or less
20: Relief valves are rated in
- gallons of water per minute
- gallons of water per hour
- pounds of air per hour
- pounds of air per minute
21: Which of the following is an inorganic refrigerant?
- R-22
- Ammonia
- Chlorofluorocarbons
- All of the above
22: What must be done to refrigerant pipes before being buried ?(8.10.4)
- Classifed
- Leak checked
- Insulated and installed in a pipe duct (Encased)
- Certified
23: 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
24: High pressure controls should be set no higher than
- 10% of set point
- 25% of set point
- 80% of set point
- 90% of set point
25: How are refrigerant blends classified?
- Based on the oil used
- Blends don't have to be classified
- Based on worst case fractionation
- Based on best case Fractionation