Topics: ASHRAE/CMR
1: A premise where large numbers of people congregate and from which occupants can not quickly vacate the space is considered
- public assembly occupancy
- mixed occupancy
- commercial occupancy
- institutional occupancy
2: Ashrae states that the equipment on a building needs to conform to adjacent buildings classifications when within ____ feet from opening and intakes.
- 50
- 75
- 15
- 20
3: Pressure relief valves shall be marked with the data from
- Section VIII Division of the ASME Boiler & Pressure Code
- Section I Division VIII of ASME Boiler & Pressure Code
- Section IV Division of the ASME Boiler & Pressure Code
- Section XIII Division of the ASME Boiler & Pressure Code
4: 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
5: High pressure controls should be set no higher than
- 10% of set point
- 80% of set point
- 90% of set point
- 25% of set point
6: Institutional occupancy is
- a premise or that portion of a premise where large numbers of people congregate and from which occupants cannot quickly vacate the space.
- a premise or that portion of a premise from which, because they are disabled, debilitated, or confined, occupants cannot readily leave without the assistance of others.
- a premise or that portion of a premise where people transact business, receive personal service, or purchase food and other goods.
- None of the above
7: Which refrigerant replaced R-12?
- R-410A
- R-134A
- R-407A
- R-22
8: Evaporators located ____inches of a heating coil shall be equipped whit a pressure relief device.
- 18
- 24
- 10
- 15
9: When is the space above a drop ceiling calculated as space for refrigerant limit quantities?
- When there are sprinklers above
- When there is a space 6' or more above it
- When it's used as part of a supply or return air system
- When its white
10: Dual-pressure relief devices should be installed on
- vessels of 10 cubic feet or more
- vessels of 3 cubic feet or more
- vessels of 3 cubic feet or less
- vessels of 10 cubic feet or less
11: The ASHRAE Standard 34 requires what type of alarm for equipment rooms using HCFC-123?
- refrigerant sensing
- A group sensing
- phosgene gas sening
- CO Sensing
12: Group A1 refrigerants over ____ pounds in a system must discharge to the atmosphere
- 330
- 110
- 6.6
- 1,000
13: 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
14: Who is permitted to access a refrigeration machine room?
- Contractors only
- Authorized persons only
- Anyone, it's a completely safe area
- Any employee
15: Each machinery room shall contain
- a refrigerant detector located in an area where the refrigerant from a leak will concentrate
- high and low pressure controls
- smoke and fire alarms as well as three means of egress and that egress must meet 528 CMR ventilation requirements
- a toxicity detector where the presence of ammonia or lithium bromide from a leak will concentrate
16: Direct systems using Group II refrigerants
- shall be installed in Class T machinery rooms
- shall be installed per instruction of the AHJ
- shall be allowed to be used for human comfort.
- shall not be used for air condition for human comfort
17: Refrigerants shall be classified by
- maximum permissible quantities of each group
- requirements for commercial, industrial, and residential occupancies
- color codes
- toxicity and flammability
18: Which refrigerant(s) is an HFC?
- R-22
- R-410A
- R-502
- All of the above
19: What do you need to do when you install a new system?
- Document the superheat and subcooling reading
- Add refrigerant
- Have it inspected
- Insulate the suction line before you take a superheat reading
20: A High-Probablity system
- is a system highly likely to leak from 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 failed connections will enter the unoccupied space
- is such that a leak of refrigerant from failed connections will enter the occupied space
21: 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
22: Machinery rooms must be vented to ______?
- neutralizing tank
- outdoors
- unoccupied spaces
- basement
23: What must be done to refrigerant pipes before being buried ?(8.10.4)
- Leak checked
- Classifed
- Certified
- Insulated and installed in a pipe duct (Encased)
24: Pressure vessels having an inside diameter of 6” or less shall be protected by
- either a fusible plug or a pressure relief device
- a pressure relief device
- Pressure vessels having an inside diameter of 6” or less need no such protection unless otherwise specified
- a fusible plug
25: Large Mercantile occupancy is a premise or that portion of a premise where more than ____ persons congregate on levels above or below the street level to purchase personal merchandise.
- 400
- 350
- 250
- 100