Topics: ASHRAE/CMR
1: What type of copper is not permitted on refrigeration systems?
- Type M
- Type N
- Type L
- Type K
2: The total amount of refrigerant stored in a machinery room in all containers not provided with relief valves shall not exceed
- 55 lbs
- 660 lbs
- 330 lbs.
- 550 lbs
3: Ammonia is under what safety classification?
- B3
- A3
- B2
- B1
4: Pressure vessels with an internal volume of 3 cubic feet or more
- shall use pressure relief devices or fusible plugs
- shall use pressure relief devices
- do not need pressure relief protection
- shall use fusible plugs
5: What kind of material can't be used on the outlet of a relief valve?
- Stainless Steel
- Aluminum
- PVC
- Copper
6: According to the 522 CMR Board of Boilers, refrigerant detectors, alarms, and the refrigeration mechanical room ventilating systems shall be tested
- regularly
- annually
- quarterly
- bi-annually
7: _____ alloys shall not be used in contact with an halogenated refrigerants.
- Nickel
- Zinc
- Copper
- Magnesium
8: How many CFMs are required per square foot of commercial office occupied space
- 15 CFM
- 20 CFM
- 5 CFM
- .5 CFM
9: Name an HCFC refrigerant(s):
- R-22
- R-123
- R-11
- both a & b
10: The Department that certifies the transportation of refrigerant is the
- EPA
- EPO
- RSES
- DOT
11: 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
12: There can be no airflow from an occupied space through a machine room unless what?
- System is high velocity
- System is ducted and sealed
- Duct is not located in the ceiling
- None of the above.
13: Group A1 refrigerants over ____ pounds in a system must discharge to the atmosphere
- 1,000
- 110
- 330
- 6.6
14: A “U” or “UM” marking a on a nameplate of a pressure vessels signifies compliance with Section VIII of
- the ASME Boiler and Pressure Vessel Code
- Section 11.3.1.5 ASHRAE 15 Standard
- the ANSI Standard 10.7.2
- both the ANSI Standard 10.7.2 and ASHRAE 15 Standard 11.3.1.5
15: What refrigerant is an inorganic compound?
- R-410A
- R-132A
- R-22
- Ammonia
16: Single compound Refrigerants are classified by what two criteria?
- Flammability and toxicity
- Flammability and temperature range
- Weight and color
- Temperature range and hazardousness
17: Which refrigerant(s) is an HFC?
- R-22
- R-410A
- R-502
- All of the above
18: When a pressure gauge is permanently installed on a system, it must be ___ times the design pressure of the system.
- 1.2
- 1
- 1.5
- 2.2
19: A movie theater would be considered a
- institutional occupancy
- commercial occupancy
- public assembly occupancy
- mixed occupancy
20: 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
21: Ammonia can come in contact with _______ ?
- Aluminum
- Copper tubing
- Brass
- Copper
22: Trichlorofluoromethane is the name of what refrigerant?
- R-11
- R-12
- R-502
- R-113
23: Fusible plugs shall not be used with pressure vessels of
- 15 cubic feet or more
- 3 cubic feet or less
- 3 cubic feet or more
- 15 square feet or less
24: What section governs pressure vessels?
- Section ASHREA 34
- Section 1 ASHREA 15 ASME fired
- Section 8 ASHREA 15 ASME unfired
- OSHA
25: What refrigerant doesn't have to be classifted?
- R-717
- R-134a
- R-718
- R-711