Topics: ASHRAE/CMR
1: When must refrigeration system covered by the code be inspected?
- Upon installation
- Not required
- Annually and when installed
- Annually
2: What pipe can not be used for refrigeration?
- L
- K
- N
- M
3: Ammonia (NH3) is a group III refrigerant
- True
- False
4: What is an example of institutional occupancy?
- Dorms
- Hospital
- Football stadium
- Shopping mall
5: Class 3 refrigerants are
- highly flammable
- toxic
- non-flammable
- non-toxic
6: Halo-carbon refrigerants cannot be used with what material?
- Copper
- Aluminum
- Magnesium alloy
- Stainless Steel
7: 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
8: NH3 is
- ammonia
- R-508A
- R-718
- lithium bromide
9: When should a relief valve start to function?
- 10 psi before it's set pressure
- Before the purge station discharges
- Two times it's working pressure
- At it's set pressure
10: What would be the classification of a prison?
- Place of assembly
- Industrial
- Institutional
- Large mercantile
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: Fusible plugs shall not be used with pressure vessels of
- 3 cubic feet or less
- 3 cubic feet or more
- 15 square feet or less
- 15 cubic feet or more
13: What refrigerant is an inorganic compound?
- R-410A
- R-22
- Ammonia
- R-132A
14: What section governs pressure vessels?
- Section ASHREA 34
- Section 8 ASHREA 15 ASME unfired
- Section 1 ASHREA 15 ASME fired
- OSHA
15: What type of refrigerants are NOT flammable?
- CHC
- HFC
- HCFC
- All of the above
16: Pressure relief valves shall be marked with the data from
- Section XIII Division of the ASME Boiler & Pressure Code
- Section I Division VIII of ASME Boiler & Pressure Code
- Section IV Division of the ASME Boiler & Pressure Code
- Section VIII Division of the ASME Boiler & Pressure Code
17: 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
18: A total of all group A-2,B-2, A-3, and B-3 refrigerants shall not exceed ____ lb in the occupied areas and machinery rooms of institutional occupancies.
- 50
- 100
- 550
- 350
19: When a receiver is greater than 3 cubic feet but less than 10 cubic feed, what is the minimum relief device required?
- fusible plug
- relief valve
- rupture disc
- all of the above
20: Machinery rooms shall be vented to _____________ and utilizing mechanical ventilation.
- the return air ducted system
- the outdoors
- the mechanical room housing the refrigeration system
- Machinery rooms need not be vented
21: The total amount of refrigerant stored in a machinery room in all containers not provided with relief valves shall not exceed
- 55 lbs
- 550 lbs
- 330 lbs.
- 660 lbs
22: What is the refrigerant dichlorodifluoromethane?
- R-123
- R-22
- R-134A
- R-12
23: What does safe access mean?
- OSHA approved
- Locked doors
- A clear unobstructed path to the equipment and controls
- Well-lit exit signs
24: Group A1 refrigerants over ____ pounds in a system must discharge to the atmosphere
- 330
- 110
- 6.6
- 1,000
25: Field Inspections of refrigeration and A/C systems in Massachusetts shall be made by
- District Engineering Inspectors
- Commissioned Inspectors
- Master licensed Technician
- both a or b