Topics: ASHRAE/CMR
1: What is an egress?
- A code violation
- An entrance or exit
- A valve put on the low side of the system to prevent frosting
- An escape route
2: What refrigerant doesn't have to be classifted?
- R-711
- R-134a
- R-718
- R-717
3: Walls and doors of a machinery room shall be at least _____ hour(s) fire rated.
- 5
- 1
- 2
- 3
4: How many refrigerant classifications are there for toxicity?
- 1
- 3
- 5
- 2
5: What is not a requirement of a Class T machine room?
- Tight fitting doors
- Automatic ventilation
- Fire hose connected to the building fire protection system.
- Self-closing doors
6: What refrigerant has zero ozone depletion
- HFC
- CFC
- HCFC
- None of the above
7: What type of relief valve is used on a CO2 system?
- glove disc
- fusible plug
- gate valve
- rupture disc
8: Ammonia (NH3) is a group III refrigerant
- True
- False
9: R-12. R-22, and R-40 are considered Group I refrigerants.
- True
- False
10: The total amount of refrigerant stored in a machinery room in all containers not provided with relief valves shall not exceed
- 500 lbs
- 55 lbs
- 660 lbs
- 330 lbs
11: All machine rooms must be outfitted with a detector that _______?
- activates an audible alarm
- activates a visual alarm
- starts the ventilation system
- All of the above
12: NH3 is
- ammonia
- R-508A
- R-718
- lithium bromide
13: 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
14: All serviceable components of a refrigeration system shall be provided with
- service manuals
- name plates with markings referring to pressure and temperature in accordance with ASME Boiler and Pressure Vessel Code
- manufactures instructions on start-up procedures
- safe access
15: Which refrigerant class listed below is the most flammable?
- C-3
- A-1
- A-3
- B-2
16: What section of ASHRAE-15 governs pressure vessels?
- Section 6 ASHRAE-34 ASME VIII unfired
- Section 7 ASHRAE-15 ASME VIII fired
- Section 9 ASHRAE-15 ASME VIII unfired
- OSHA
17: Who authorizes changes to the safety codes?
- Contractor who last serviced the system.
- Board of Boilers
- Person who pulled the permit
- Person in charge of the facility
18: What pipe can not be used for refrigeration?
- K
- L
- M
- N
19: A High-Probablity system
- is such that a leak of refrigerant from failed connections will enter the occupied space
- is such that a leak of refrigerant from failed connections will enter the unoccupied space
- 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
20: What type of copper is not permitted on refrigeration systems?
- Type M
- Type N
- Type L
- Type K
21: How many refrigerant classifications are there for flammability?
- 2
- 1
- 3
- 7
22: How many different groups of refrigerants are there?
- 11
- 7
- 3
- 15
23: Where must a refrigeration contractor's license number be displayed?
- Trucks, license plates, and uniforms
- Uniforms, checks, and invoices.
- Trucks, invoices, and advertising
- Truck, office, every job, and on all equipment
24: A factory-sealed system containing less than 22lbs. of Group A1 refrigerant
- does not require a pressure-limiting device
- shall have a pressure limiting device installed on the high side of the system
- shall have a pressure limiting device and a pressure relief valve installed
- shall be inspected by the Boiler of Inspectors bi-annually
25: What must be done if refrigeration lines pass through a concrete floor?
- leak checked
- installed through a pipe casing
- insulated
- moisture barrier