Topics: ASHRAE/CMR
1: System design pressures must take into consideration, not only, pressures found during normal operation but also what?
- When it's cold out
- When there is a malfunction on the high side
- When its warm out
- All of the above
2: When must refrigeration system covered by the code be inspected?
- Upon installation
- Annually and when installed
- Not required
- Annually
3: The color code of a tank of ammonia is
- silver
- light green
- lavender
- white
4: Low temperature systems should have what?
- High pour point
- Low pour point
- High viscosity
- None of the above
5: Large vessels containing refrigerant ______________________ from using two or more pressure-relief devices in parallel to obtain the required capacity.
- containing R-11, R-123 & R-717 exclusively shall not be prohibited
- of Group B2 refrigerant shall be prohibited
- shall not be prohibited
- shall be prohibited
6: A factory-sealed system containing less than 22lbs. of Group A1 refrigerant
- shall be inspected by the Boiler of Inspectors bi-annually
- shall have a pressure limiting device and a pressure relief valve installed
- shall have a pressure limiting device installed on the high side of the system
- does not require a pressure-limiting device
7: Halogen refrigerants are corrosive to which type of metal?
- stainless steel
- black iron
- magnesium
- copper
8: An evaporator coil located near heating coil shall have a pressure-relief device installed within ______ inches of the evaporator.
- 36
- 18
- 48
- 24
9: Group A1 refrigerants over ____ pounds in a system must discharge to the atmosphere
- 1,000
- 330
- 110
- 6.6
10: What type of pressure relief device is used on a CO2 system?
- Rupture disk
- Fusible plug
- Gate valve
- Glove valve
11: Refrigeration piping before being buried shall be
- leak tested
- encased in pipe duct
- pressure tested
- All of the above
12: Which of the following are considered inorganic refrigerants?
- R-717 and R-718
- 410A and R-407C
- R-500 and R-502
- None of the above
13: What is not a requirement of a class T machine room?
- self-closing doors
- automatic ventilation
- fire hose connection to the building fire protection system
- tight fitting doors
14: A premise where large numbers of people congregate and from which occupants can not quickly vacate the space is considered
- public assembly occupancy
- institutional occupancy
- commercial occupancy
- mixed occupancy
15: 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
16: Liquid level gauges must be provided with what?
- A low level mark
- A red line
- Automatic shut-offs
- A relief valve
17: What type of relief valve is used on a CO2 system?
- fusible plug
- gate valve
- glove disc
- rupture disc
18: 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
19: How many different groups of refrigerants are there?
- 7
- 3
- 15
- 11
20: Whoever owns/uses a refrigeration or air conditioning system covered by this code
- must notify the Department of Public Safety prior to starting the system
- shall be licensed by the Commonwealth of Massachusetts according to CMR 522
- shall make application for inspections to the Chief of Inspectors
- None of the above
21: What section governs pressure vessels?
- Section 8 ASHREA 15 ASME unfired
- Section 1 ASHREA 15 ASME fired
- OSHA
- Section ASHREA 34
22: What is a Category "M" fluid?
- A typical refrigerant used on newer air conditioning and heat pump systems
- A fluid which is nonflammable, nontoxic, not damaging to human tissues, does not exceed 150 psig, and the designed temperature is between -20F to 366F
- A toxic fluid, which can produce serious irreversible harm to persons on breathing or bodily content
- Any fluid that exceeds 150 psig and has design temperatures over 366F
23: Pressure vessel having an inside diameter exceeding 6” with an internal pressure greater than 15psig shall be marked directly on or on the nameplate the letters _______________ signifying compliance with the ASME Boiler & Pressure Vessel Code.
- “UL”
- “UV”
- “U” or “UM”
- “UM” and “UV”
24: The 522 CMR 9.00 has adopted for reference ASHRAE ____
- III
- 15
- 25
- 10
25: A pressure-limiting device isn't required on a factory-sealed system containing less than ____ lbs.
- 50
- 22
- 66
- 25