Topics: ASHRAE/CMR
1: What refrigerant doesn't have to be classifted?
- R-134a
- R-718
- R-717
- R-711
2: Group A2 refrigerants have a ______ toxicity rating than Group B1 refrigerants.
- lower
- higher
- there is no Group B1 refrigerants
- the same
3: NH3 is
- ammonia
- lithium bromide
- R-508A
- R-718
4: A High-Probability System
- is a system highly likely to leak form a failed connection or component of such system
- is such that a leak of refrigerant from a failed connection will enter the occupied space
- 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
5: Defined process piping by code CMR (528)
- Any piping that conveys a solid, liquid or gas that is not part of the plumbing or fire protection system
- Any piping in an industrial space
- Any piping in an industrial or commercial space
- All of the above
6: Ammonia (NH3) is a group III refrigerant
- True
- False
7: What is not a requirement of a class T machine room?
- automatic ventilation
- tight fitting doors
- fire hose connection to the building fire protection system
- self-closing doors
8: Refrigerant restricted in 2004 but used for transition for decades:
- R-22
- R-123
- R-134A
- R-11
9: Pressure vessels nameplate markings must be compliant with the
- ASHRAE 34 Standards
- CMR-588 & CMR-528
- ASME Boiler and Pressure Vessel Code
- All of the Above
10: Setting a pressure relief device shall not exceed ___ of the design pressure
- 90%
- 80%
- 100%
- 75%
11: What happens after your initial inspection of a pressure vessel?
- There is a temporary shut-down until a final inspection can be performed.
- Notify the Fire Marshal that the system has been inspected and approved
- Notify the AHJ to let them know that the system been inspected
- Inspector leaves a metal tag with a certification listed on it
12: 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
13: Ashrae states that the equipment on a building needs to conform to adjacent buildings classifications when within ____ feet from opening and intakes.
- 15
- 50
- 20
- 75
14: Where must a refrigeration contractor's license number be displayed?
- Truck, office, every job, and on all equipment
- Uniforms, checks, and invoices.
- Trucks, invoices, and advertising
- Trucks, license plates, and uniforms
15: Ammonia can come in contact with _______ ?
- Copper tubing
- Copper
- Brass
- Aluminum
16: What must be done to refrigerant pipes before being buried ?(8.10.4)
- Certified
- Insulated and installed in a pipe duct (Encased)
- Classifed
- Leak checked
17: What refrigerant is an inorganic compound?
- R-22
- Ammonia
- R-132A
- R-410A
18: Who is permitted to access a refrigeration machine room?
- Anyone, it's a completely safe area
- Any employee
- Authorized persons only
- Contractors only
19: R-11 belongs to Group
- B-1
- A-2
- B-3
- A-1
20: How far from the ground does a relief valve need to be?
- Not more than 3' above grade
- At least 20' above grade
- At least 15' above grade
- At least 25' above grade
21: A plug containing an alloy that will melt at a specific temperature to relief pressure is a
- rupture plug
- relief plug
- fusible plug
- fusion plug
22: Joints in piping for refrigeration containing parts must withstand temperatures of ___?
- 1000F
- 700F
- 800F
- 600F
23: When an inspection is needed, how often must it be done?
- annually
- every 36 months
- every 18 months
- every 24 months
24: Fusible plugs must have what marked on them?
- Melting temperature in F
- Melting temperature in C
- Opening pressure
- All of the above
25: A declaration test is needed when the system contains more than
- 65 lbs
- 55 lbs
- 110 lbs
- 120 lbs