Topics: ASHRAE/CMR
1: What must be done to refrigerant pipes before being buried ?(8.10.4)
- Classifed
- Certified
- Leak checked
- Insulated and installed in a pipe duct (Encased)
2: 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.
3: A factory-sealed system containing less than 22lbs. of Group A1 refrigerant
- does not require a pressure-limiting device
- shall have a pressure limiting device installed on the high side of the system
- shall have a pressure limiting device and a pressure relief valve installed
- shall be inspected by the Boiler of Inspectors bi-annually
4: The certificate of inspection
- shall be $20 and an additional fee of $1 for each tone above 20 tons
- shall be posted and protected from dirt, water, and other elements
- shall be posted on the compressor shell or electrical panel at the unit
- shall be authorized by a notarized insurance company
5: Evaporators located ____inches of a heating coil shall be equipped whit a pressure relief device.
- 24
- 10
- 18
- 15
6: R-22 is classified as a ____ refrigerant on the safety matrix.
- B-1
- A-1
- B-2
- A-2
7: R-718 is rated unlimited for refrigeration quantity contained in a system. Why?
- R-718 is not rated unlimited because it's a dangerous refrigerant
- Because it's a non-flammable refrigerant
- Because it's water
- Because it's cheap
8: Where are the three places that the discharge from an ammonia relief valve be piped?
- atmosphere, tank containing water, where the A.H.J. indicates
- underground, into drain, into mechanical room
- to chemical neutralizing tank only
- none of the above
9: R-11 belongs to Group
- A-2
- B-1
- A-1
- B-3
10: What happens after your initial inspection of a pressure vessel?
- There is a temporary shut-down until a final inspection can be performed.
- Inspector leaves a metal tag with a certification listed on it
- Notify the Fire Marshal that the system has been inspected and approved
- Notify the AHJ to let them know that the system been inspected
11: A professional or office building would be considered what type of occupancy?
- mercantile
- public assembly
- commercial
- business
12: A class B1 refrigerant is considered
- non-toxic but highly flammable
- toxic but non-flammable
- toxic and somewhat flammable
- non-toxic and non-flammable
13: Stop valves shall not be permitted between the system and the
- service valve
- bleed valve
- condenser
- relief valve
14: 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
15: A Low-Probability System
- is such that a leak of refrigerant from a failed connection will enter the occupied space
- is such that a leak of refrigerant from a failed connection can not enter the occupied space
- is such that any leak will cause injury or death to anyone within a 100 square foot area
- is a system highly likely to leak form a failed connection or component of such system
16: According to the 522 CMR Board of Boilers, refrigerant detectors, alarms, and the refrigeration mechanical room ventilating systems shall be tested
- annually
- quarterly
- bi-annually
- regularly
17: When air is ducted through a machine room that services occupied space, What must be done?
- Insulated and cross broke
- Ducted and sealed
- Flanged and gasketed
- Welded and seamed.
18: Halogen refrigerants are corrosive to which type of metal?
- copper
- black iron
- magnesium
- stainless steel
19: The color code of a tank of ammonia is
- lavender
- silver
- white
- light green
20: Large mercantile occupancy is
- a premise or that portion of a premise where more than 1500 persons congregate on levels above or below street level to purchase personal merchandise
- a premise or that portion of a premise where more than 200 persons congregate on levels above or below street level to purchase personal merchandise
- a premise of that portion of a premise where more than 100 persons congregate on levels above of below street level to purchase personal merchandise.
- a premise of that portion of a premise where more than 50 persons congregate on levels above of below street level to purchase personal merchandise.
21: What is Trichlorotrifluoromethane?
- R-12
- R-13
- R-113
- R-11
22: How many refrigerant classifications are there for toxicity?
- 1
- 3
- 5
- 2
23: A declaration test is needed when the system contains more than
- 120 lbs
- 110 lbs
- 65 lbs
- 55 lbs
24: 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
25: The discharge relief valve is located (9.4.6)
- on top of the condensor
- between the compressor and the stop valve
- between the compressor and oil separator
- between the compressor and reciever