Topics: ASHRAE/CMR
1: 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
2: What happens after your initial inspection of a pressure vessel?
- There is a temporary shut-down until a final inspection can be performed.
- Inspector leaves a metal tag with a certification listed on it
- Notify the Fire Marshal that the system has been inspected and approved
- Notify the AHJ to let them know that the system been inspected
3: Group A3 refrigerants have a ______ flammability rating than Group B1 refrigerants
- higher
- there is no Group B1 refrigerants
- lower
- the same
4: 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
5: What should not (and can not) be located between a pressure imposing device and a pressure-limiting device?
- Stop valve
- Foot valve
- Muffler
- Moisture indicator
6: 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
7: A relief valve shall be located at least ___ above grade.
- 10'
- 36'
- 15'
- 25'
8: What refrigerant has zero ozone depletion
- HFC
- CFC
- HCFC
- None of the above
9: How many gallons of water do you need per pound of ammonia?
- 50
- 100
- 10
- 1
10: What refrigerant doesn't have to be classified?
- R-422A
- R-134A
- R-717
- R-718
11: The 522 CMR 9.00 has adopted for reference ASHRAE ____
- 10
- 25
- III
- 15
12: What refrigerant is an inorganic compound?
- R-22
- R-410A
- R-132A
- Ammonia
13: What type of copper is not permitted on refrigeration systems?
- Type M
- Type K
- Type L
- Type N
14: Pressure vessels shall be provided with ___________in accordance with Section VIII of the ASME Boiler & Pressure Vessel Code
- over pressure protection
- Pressure vessels need no type of protection as long as it is hydrostatically tested every three months
- over pressure protection and a rupture disc
- over pressure protection as well as a temperature protection device
15: 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
16: A class A3 refrigerant is considered
- non-toxic and non-flammable
- toxic and somewhat flammable
- non-toxic but highly flammable
- toxic and non-flammable
17: Which refrigerant(s) is an HFC?
- R-22
- R-410A
- R-502
- All of the above
18: What do you need to do when you install a new system?
- Document the superheat and subcooling reading
- Add refrigerant
- Have it inspected
- Insulate the suction line before you take a superheat reading
19: NH3 is
- ammonia
- lithium bromide
- R-718
- R-508A
20: R-22 is considered a(n)
- HCFCH
- CFC
- HCFC
- HFC
21: It shall be the duty of the person in charge of the premises on which a refrigeration system containing more than ___ lbs of refrigerant is installed to provide a schematic drawing or panel giving directions for the operation of the system.
- 15
- 50
- 55
- 75
22: Which refrigerant was still able to be vented to the atmosphere after July 1, 1992?
- R-11
- R-113
- R-22
- R-12
23: Ammonia (NH3) is a group III refrigerant
- True
- False
24: Pressure vessels with an internal volume of 10 cubic feet or more
- shall use rupture discs or duel pressure relief valves
- shall use pressure relief devices
- shall use fusible plugs
- shall use pressure relief devices or fusible plugs
25: The main cause of enacting the "no vending rule" of July 1st 1992 was
- global warming potential
- ozone depletion
- both a & b
- None of the above