Topics: ASHRAE/CMR
1: Halogen refrigerants are corrosive to which type of metal?
- stainless steel
- black iron
- copper
- magnesium
2: What is Trichlorotrifluoromethane?
- R-113
- R-13
- R-12
- R-11
3: The Board of Boilers adopts by reference
- Montreal Protocol Safety Code
- the MACS Pressure Vessel Code of Massachusetts
- MSCA Code
- the 1997 ANSI/ASHRAE Safety Code
4: Evaporators within 18" of a heating coil must be equipped with a
- pressure relief device
- zone valve
- high limit control
- low limit control
5: How many gallons of water do you need per pound of ammonia?
- 100
- 1
- 10
- 50
6: What section of ASHRAE-15 governs pressure vessels?
- OSHA
- Section 7 ASHRAE-15 ASME VIII fired
- Section 9 ASHRAE-15 ASME VIII unfired
- Section 6 ASHRAE-34 ASME VIII unfired
7: How far from the window does a relief valve need to be according to ASHRAE-15?
- At least 40'
- At least 20'
- There is no minimum for relief valve and windows.
- At least 30'
8: A High-Probability System
- is a system highly likely to leak form a failed connection or component of such system
- is such that any leak will cause injury or death to anyone within a 100 square foot area
- is such that a leak of refrigerant from a failed connection will enter an unoccupied space
- is such that a leak of refrigerant from a failed connection will enter the occupied space
9: 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
10: Pressure relief devices are marked with a ____________ signifying compliance with the ASME Boiler & Pressure Vessel Code.
- UL and UM
- UM or UL
- UL and UR
- UV or UR
11: Which refrigerant(s) is an HFC?
- R-22
- R-410A
- R-502
- All of the above
12: When an inspection is needed, how often must it be done?
- every 36 months
- every 18 months
- annually
- every 24 months
13: What is the minimum size of the discharge pipe?
- Same size as the outlet of the relief valve
- One pipe size larger that the inlet of the relief valve
- Depends on size of manifold
- All of the above
14: Which refrigerant was still able to be vented to the atmosphere after July 1, 1992?
- R-11
- R-22
- R-12
- R-113
15: What is an example of institutional occupancy?
- Shopping mall
- Dorms
- Hospital
- Football stadium
16: Doors communicating with outside from a mechanical room must be?
- Self-closing, aligned, fire door
- Self-closing, wooden, fire door
- Steel, approved, weather-stripped
- Self-closing, approved, fire door
17: _____ alloys shall not be used in contact with an halogenated refrigerants.
- Magnesium
- Zinc
- Copper
- Nickel
18: A premise or that portion of a premise where large numbers of people congregate and from which occupants cannot quickly vacate the space such as auditoriums, ballrooms, classrooms, passenger depots, restaurants, and theaters is considered a(n)
- public assembly occupancy
- institutional occupancy
- illegal occupancy
- commercial occupancy
19: Pipe identification labels are required when the system contains more than
- 120 lbs
- 55 lbs
- 110 lbs
- 65 lbs
20: A professional or office building would be considered what type of occupancy?
- business
- public assembly
- mercantile
- commercial
21: Which refrigerant replaced R-12?
- R-134A
- R-22
- R-407A
- R-410A
22: A restaurant is classified as a
- mixed occupancy
- commercial occupancy
- public assembly occupancy
- large mercantile occupancy
23: Where a refrigeration or air conditioning system is installed,
- A field inspection shall be made before it is put into service
- The company who installed the system must notify the fire department in the jurisdiction where installed
- it shall not be operated below prescribed pressuers
- the form or certificate shall be authorized by the Department of Public Safety
24: 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
25: Ashrae states that the equipment on a building needs to conform to adjacent buildings classifications when within ____ feet from opening and intakes.
- 20
- 15
- 50
- 75