Topics: ASHRAE/CMR
1: Joints in refrigeration piping must be _____ before being covered?
- Inspected
- Pressurized
- Leak tested
- Insulated
2: R-12. R-22, and R-40 are considered Group I refrigerants.
- True
- False
3: When releasing a hydrogenated hydrocarbon refrigerant to the atmosphere, ample ventilation must be provided and
- gas masks must be worn
- explosion precautions must be taken
- no flames shall be permitted
- the owner shall be informed
4: A premise or that portion of a premise where people transact business, receive personal service, or purchase foods, other goods is considered a
- business occupancy
- commercial occupancy
- public assembly occupancy.
- mercantile occupancy
5: All welding done on any refrigeration system or piping covered by 522 CMR 9.00 shall be performed by a according to Section IX of the ASME code
- welder qualified
- licensed technician
- competent welder
- licensed welder
6: What section of ASHRAE-15 governs pressure vessels?
- Section 9 ASHRAE-15 ASME VIII unfired
- OSHA
- Section 6 ASHRAE-34 ASME VIII unfired
- Section 7 ASHRAE-15 ASME VIII fired
7: R-22 is classified as a ____ refrigerant on the safety matrix.
- A-1
- B-1
- A-2
- B-2
8: 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.
- 10
- 25
- 15
- 20
9: Which occupancy can ammonia be used in?
- depends on the quantity of freon
- industrial
- redifential
- commercial
10: The total amount of refrigerant stored in a machinery room in all containers not provided with relief valves shall not exceed
- 550 lbs
- 660 lbs
- 55 lbs
- 330 lbs.
11: What is a Category "M" fluid?
- A typical refrigerant used on newer air conditioning and heat pump systems
- A fluid which is nonflammable, nontoxic, not damaging to human tissues, does not exceed 150 psig, and the designed temperature is between -20F to 366F
- Any fluid that exceeds 150 psig and has design temperatures over 366F
- A toxic fluid, which can produce serious irreversible harm to persons on breathing or bodily content
12: What refrigerant doesn't have to be classified?
- R-134A
- R-717
- R-422A
- R-718
13: Refrigerant restricted in 2004 but used for transition for decades:
- R-22
- R-11
- R-134A
- R-123
14: A restaurant is classified as a
- mixed occupancy
- large mercantile occupancy
- commercial occupancy
- public assembly occupancy
15: 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
16: Pressure relief devices are marked with a ____________ signifying compliance with the ASME Boiler & Pressure Vessel Code.
- UL and UR
- UL and UM
- UV or UR
- UM or UL
17: Pressure vessels shall be provided with ___________in accordance with Section VIII of the ASME Boiler & Pressure Vessel Code
- over pressure protection
- Pressure vessels need no type of protection as long as it is hydrostatically tested every three months
- over pressure protection as well as a temperature protection device
- over pressure protection and a rupture disc
18: A hotel is considered a _______ occupancy.
- institutional
- mercantile
- commercial
- residential
19: The ASHRAE Standard 34 requires what type of alarm for equipment rooms using HCFC-123?
- phosgene gas sening
- A group sensing
- refrigerant sensing
- CO Sensing
20: Where must a refrigeration contractor's license number be displayed?
- Truck, office, every job, and on all equipment
- Uniforms, checks, and invoices.
- Trucks, license plates, and uniforms
- Trucks, invoices, and advertising
21: 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.
22: Ashrae states that the equipment on a building needs to conform to adjacent buildings classifications when within ____ feet from opening and intakes.
- 20
- 50
- 75
- 15
23: R-717 is
- water
- trichloromethane
- carbon dioxide
- ammonia
24: A factory-sealed system containing less than 22lbs. of Group A1 refrigerant
- shall be inspected by the Boiler of Inspectors bi-annually
- shall have a pressure limiting device installed on the high side of the system
- does not require a pressure-limiting device
- shall have a pressure limiting device and a pressure relief valve installed
25: Pressure vessels with an internal volume of 3 cubic feet or less
- do not need pressure relief protection
- shall use fusible plugs
- shall use pressure relief devices or fusible plugs
- shall use pressure relief devices