Topics: ASHRAE/CMR
1: 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
- shall not be prohibited
- of Group B2 refrigerant shall be prohibited
- shall be prohibited
2: The discharge relief valve is located (9.4.6)
- between the compressor and the stop valve
- between the compressor and oil separator
- between the compressor and reciever
- on top of the condensor
3: Emergency shutdown procedures, including precautions to be observed in case of a breakdown or leak over 55 lbs of refrigerant charge, shall be displayed on a conspicuous card located as near as possible to the
- evaporator
- outside the machinery room
- boiler
- compressor
4: Halogen refrigerants are corrosive to which type of metal?
- magnesium
- stainless steel
- copper
- black iron
5: What would be the classification for Stop & Shop grocery store?
- Place of assembly
- Industrial
- Large mercantile
- Instituional
6: Name a CFC refrigerant(s):
- R-11
- R-12
- R-123
- both a & b
7: The test pressure applied to the high side of each factory-assembled refrigerating system shall be at least equal to the design pressure of
- the high side
- the low side
- the aggregate of the high side and low side
- 2.5 times the design pressure
8: R-12. R-22, and R-40 are considered Group I refrigerants.
- True
- False
9: What would be the classification of a prison?
- Place of assembly
- Industrial
- Institutional
- Large mercantile
10: What was the main reason for enacting the no venting rule of July 1, 1992?
- Ozone depletion
- Green house effect
- Global warming potential
- All of the above
11: What is the refrigerant dichlorodifluoromethane?
- R-123
- R-12
- R-134A
- R-22
12: R-11 belongs to Group
- B-1
- B-3
- A-2
- A-1
13: How are refrigerant blends classified?
- Blends don't have to be classified
- Based on the oil used
- Based on best case Fractionation
- Based on worst case fractionation
14: R-410A is classified as a ____ refrigerant on the safety matrix.
- B-2
- A-2
- A-1
- B-1
15: Pressure vessels nameplate markings must be compliant with the
- ASHRAE 34 Standards
- CMR-588 & CMR-528
- ASME Boiler and Pressure Vessel Code
- All of the Above
16: B3 refrigerants are considered
- toxic but non-flammable
- toxic and highly flammable
- non-toxic but non-flammable
- non-toxic but flammable
17: Pressure limiting devices are not required for systems containing less then ________ refrigerants.
- 22 lbs
- 44 lbs
- 6.6 lbs
- 13.9 lbs
18: A class B1 refrigerant is considered
- toxic and somewhat flammable
- non-toxic and non-flammable
- toxic but non-flammable
- non-toxic but highly flammable
19: What is Trichlorotrifluoromethane?
- R-13
- R-12
- R-11
- R-113
20: Class T machine room
- shall have refrigerant leak detecting systems installed inside and outside the room
- shall include closets used for setting equipment
- has no flame producing apparatus permanently installed
- shall have remote controls to stop the action of the refrigerant compressor
21: When must refrigeration system covered by the code be inspected?
- Not required
- Upon installation
- Annually
- Annually and when installed
22: What pipe can not be used for refrigeration?
- L
- K
- N
- M
23: How many refrigerant classifications are there for flammability?
- 3
- 1
- 2
- 7
24: Direct systems using Group II refrigerants
- shall be allowed to be used for human comfort.
- shall be installed in Class T machinery rooms
- shall be installed per instruction of the AHJ
- shall not be used for air condition for human comfort
25: 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