Topics: ASHRAE/CMR
1: 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
2: Halogen refrigerants are corrosive to which type of metal?
- stainless steel
- black iron
- copper
- magnesium
3: 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.
- 550
- 100
- 350
- 50
4: The ____ design is the maximum pressure for which a specific part of a refrigeration system is designed.
- low pressure
- high pressure
- critical pressure
- design pressure
5: When an inspection is needed, how often must it be done?
- annually
- every 18 months
- every 24 months
- every 36 months
6: Pressure vessels having design pressures of 15 psig or less shall have the strength to withstand at least ______times the design pressure.
- 2.5
- 2.0
- 5.5
- 3.0
7: When a refrigeration or air conditioning system is installed
- a field inspection shall be made before it is put into service
- it shall be approved by the owner for proper operation.
- it shall not be operated below prescribed pressures
- the form of certificate shall be authorized by the Department of Pubic safety
8: What section of ASHRAE-15 governs pressure vessels?
- Section 7 ASHRAE-15 ASME VIII fired
- Section 6 ASHRAE-34 ASME VIII unfired
- Section 9 ASHRAE-15 ASME VIII unfired
- OSHA
9: What must be done to refrigerant pipes before being buried ?(8.10.4)
- Certified
- Insulated and installed in a pipe duct (Encased)
- Leak checked
- Classifed
10: Halogenated refrigerants cannot be used with what material?
- Copper
- Aluminum
- Stainless steel
- Magnesium alloy
11: Can a R22 line set be reused for a 410A system and if it can be reused, what must be done to it?
- Flush with ammonia
- Flush with RX-11
- Flush with R-718
- Flush with R-11
12: Pressure vessels with an internal volume of 3 cubic feet or less
- do not need pressure relief protection
- shall use pressure relief devices
- shall use fusible plugs
- shall use pressure relief devices or fusible plugs
13: Refrigerant systems containing Group I refrigerants can be installed in or on public stairways.
- True
- False
14: What would be the classification for Stop & Shop grocery store?
- Large mercantile
- Place of assembly
- Instituional
- Industrial
15: 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.
- 55
- 50
- 15
- 75
16: Refrigeration piping before being buried shall be
- leak tested
- encased in pipe duct
- pressure tested
- All of the above
17: R-410A is classified as a ____ refrigerant on the safety matrix.
- A-2
- B-1
- A-1
- B-2
18: The 522 CMR 9.00 has adopted for reference ASHRAE ____
- III
- 10
- 15
- 25
19: Liquid level gauges must be provided with what?
- A low level mark
- A relief valve
- Automatic shut-offs
- A red line
20: Pressure vessels with an internal volume of 3 cubic feet or more
- shall use fusible plugs
- shall use pressure relief devices or fusible plugs
- shall use pressure relief devices
- do not need pressure relief protection
21: A declaration test is needed when the system contains more than
- 120 lbs
- 55 lbs
- 65 lbs
- 110 lbs
22: Setting a pressure relief device shall not exceed ___ of the design pressure
- 80%
- 90%
- 75%
- 100%
23: The ASHRAE Standard 34 requires what type of alarm for equipment rooms using HCFC-123?
- CO Sensing
- refrigerant sensing
- A group sensing
- phosgene gas sening
24: When is the space above a drop ceiling calculated as space for refrigerant limit quantities?
- When there is a space 6' or more above it
- When it's used as part of a supply or return air system
- When its white
- When there are sprinklers above
25: _____ alloys shall not be used in contact with an halogenated refrigerants.
- Copper
- Nickel
- Zinc
- Magnesium