Topics: ASHRAE/CMR
1: A machine room with a refrigerant system using ammonia shall
- be provided with a continuously operated ventilation system
- be considered a non-hazardous location in accordance with National Electrical code
- have no flame producing apparatus permanently installed and operated
- All of the above
2: What would be the classification of a prison?
- Institutional
- Place of assembly
- Industrial
- Large mercantile
3: A professional or office building would be considered what type of occupancy?
- business
- public assembly
- commercial
- mercantile
4: A room having machinery but no flame producing apparatus permanently installed and operated is considered a
- Class B machinery room
- Class M machinery room
- Class T machinery room
- Class A machinery room
5: Before you change the type of refrigerant in a refrigeration system, what three things must be done?
- nothing must be done
- place sign, check for leaks, insulate
- you can't change refrigerants
- make sure it's compatible, notify owner, notify A.H.J
6: A Low-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 can not enter the occupied space
- 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
7: A class B1 refrigerant is considered
- toxic and somewhat flammable
- toxic but non-flammable
- non-toxic and non-flammable
- non-toxic but highly flammable
8: The dial of a pressure gauge, when installed on the high side of a system be graduated 1.2 times the designed pressure.
- True
- False
9: Refrigeration devices shall be equipped with a ____ to protect against unexpected pressure due to a malfunction or fire?
- T&P device
- Circuit Breaker
- Temperature limiter device
- Relief valve
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 10 cubic feet or less
- vessels of 3 cubic feet or less
11: Which refrigerant replaced R-12?
- R-22
- R-407A
- R-410A
- R-134A
12: How many CFMs are required per square foot of commercial office occupied space
- .5 CFM
- 20 CFM
- 5 CFM
- 15 CFM
13: 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
14: What is not a requirement of a class T machine room?
- self-closing doors
- fire hose connection to the building fire protection system
- tight fitting doors
- automatic ventilation
15: A High-Probability 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 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 an unoccupied space
16: Before you change the type of refrigerant in a refrigeration system, what three things must be done?
- you can never change refrigerants
- Place sign, check for leaks, and insulate suction line
- Make sure its compatible, notify owner, and notify AHJ.
- Nothing must be done
17: Insurance companies shall forward each inspection report of all refrigeration or A/C systems to the Chief of Inspections within
- 14 days
- 1 week
- 30 days
- 2 months
18: Pressure vessels with an internal volume of 3 cubic feet or more
- shall use pressure relief devices
- shall use pressure relief devices or fusible plugs
- do not need pressure relief protection
- shall use fusible plugs
19: Where a refrigeration or air conditioning system is installed,
- the form or certificate shall be authorized by the Department of Public Safety
- The company who installed the system must notify the fire department in the jurisdiction where installed
- A field inspection shall be made before it is put into service
- it shall not be operated below prescribed pressuers
20: Refrigerants shall be classified by
- toxicity and flammability
- color codes
- maximum permissible quantities of each group
- requirements for commercial, industrial, and residential occupancies
21: When an inspection is needed, how often must it be done?
- every 18 months
- every 36 months
- annually
- every 24 months
22: Refrigerant restricted in 2004 but used for transition for decades:
- R-22
- R-134A
- R-123
- R-11
23: 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
24: What type of relief valve is used on a CO2 system?
- rupture disc
- gate valve
- glove disc
- fusible plug
25: What type of copper is not permitted on refrigeration systems?
- Type N
- Type L
- Type M
- Type K