Topics: ASHRAE/CMR
1: B3 refrigerants are considered
- non-toxic but flammable
- toxic but non-flammable
- non-toxic but non-flammable
- toxic and highly flammable
2: How far from the ground does a relief valve need to be?
- At least 15' above grade
- At least 20' above grade
- At least 25' above grade
- Not more than 3' above grade
3: A restaurant is classified as a
- large mercantile occupancy
- mixed occupancy
- commercial occupancy
- public assembly occupancy
4: Liquid level gauges shall have _____________ with one exception being that of the liquid level gauge bull’s eye type.
- color-coded glass to determine type of refrigerant
- moisture indicators
- automatic closing shut-off valves
- All of the above
5: What is an egress?
- An escape route
- A code violation
- A valve put on the low side of the system to prevent frosting
- An entrance or exit
6: How much clearance do you need around the perimeter of electrical panels?
- 36"
- 18"
- 24"
- 12"
7: R-11 belongs to Group
- A-1
- B-3
- B-1
- A-2
8: Relief valves are rated in
- gallons of water per hour
- pounds of air per hour
- gallons of water per minute
- pounds of air per minute
9: Pressure vessels of 10 cubic feet or more gross volume shall use
- at least one rupture member
- a dual pressure-relief valve if charging into the atmosphere
- at least three means of discharge and/or rupture discs
- both a and b are correct
10: When is the only time you can leave a service container attached to a system?
- Leaking system
- Recovery
- Charging
- Both b and c
11: What is an example of institutional occupancy?
- Hospital
- Dorms
- Shopping mall
- Football stadium
12: Pressure vessels having an inside diameter of 6” or less shall be protected by
- a pressure relief device
- a fusible plug
- Pressure vessels having an inside diameter of 6” or less need no such protection unless otherwise specified
- either a fusible plug or a pressure relief device
13: Who authorizes changes to the safety codes?
- Person in charge of the facility
- Contractor who last serviced the system.
- Board of Boilers
- Person who pulled the permit
14: 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)
- commercial occupancy
- public assembly occupancy
- institutional occupancy
- illegal occupancy
15: What section of ASHRAE-15 governs pressure vessels?
- OSHA
- Section 9 ASHRAE-15 ASME VIII unfired
- Section 6 ASHRAE-34 ASME VIII unfired
- Section 7 ASHRAE-15 ASME VIII fired
16: What is not a requirement of a class T machine room?
- self-closing doors
- fire hose connection to the building fire protection system
- automatic ventilation
- tight fitting doors
17: High pressure controls should be set no higher than
- 80% of set point
- 25% of set point
- 10% of set point
- 90% of set point
18: What refrigerant doesn't have to be classifted?
- R-717
- R-718
- R-711
- R-134a
19: Systems containing more than 110 pounds must have stop valves located at the
- compressor suction inlet
- compressor discharge outlet
- receiver inlet and outlet
- All of the above
20: How much refrigerant can be stored in a mechanical room outside of the system?
- 150
- 200
- 330
- 100
21: What is Trichlorotrifluoromethane?
- R-113
- R-12
- R-13
- R-11
22: No open flames are allowed in the machinery room unless?
- Approved by the authorized person
- Never can be allowed
- Approved by the installing contractor
- Only when combustion air is provided from outside of the machinery room
23: A movie theater would be considered a
- public assembly occupancy
- mixed occupancy
- institutional occupancy
- commercial occupancy
24: Pressure vessels shall be provided with ___________in accordance with Section VIII of the ASME Boiler & Pressure Vessel Code
- over pressure protection as well as a temperature protection device
- over pressure protection
- over pressure protection and a rupture disc
- Pressure vessels need no type of protection as long as it is hydrostatically tested every three months
25: What is not a requirement of a Class T machine room?
- Automatic ventilation
- Self-closing doors
- Fire hose connected to the building fire protection system.
- Tight fitting doors