Topics: ASHRAE/CMR
1: A declaration test is needed when the system contains more than
- 110 lbs
- 55 lbs
- 120 lbs
- 65 lbs
2: What type of material can't be used on the outlet of a relief valve?
- Magnesium alloy
- PVC
- Stainless steel
- Copper
3: Can you use Ammonia in industrial applications?
- Yes, always
- When mixed with R-718
- Yes, Under certain condidtions
- No, never
4: Pressure relief devices are marked with a ____________ signifying compliance with the ASME Boiler & Pressure Vessel Code.
- UL and UM
- UL and UR
- UV or UR
- UM or UL
5: What must be done to refrigerant pipes before being buried?
- Leaked checked
- Certified
- Coated
- Encased
6: A factory-sealed system containing less than 22lbs. of Group A1 refrigerant
- shall have a pressure limiting device installed on the high side of the system
- does not require a pressure-limiting device
- shall have a pressure limiting device and a pressure relief valve installed
- shall be inspected by the Boiler of Inspectors bi-annually
7: Evaporators located ____inches of a heating coil shall be equipped whit a pressure relief device.
- 15
- 18
- 24
- 10
8: What would be the classification for Stop & Shop grocery store?
- Instituional
- Large mercantile
- Place of assembly
- Industrial
9: The color code of a tank of ammonia is
- silver
- light green
- lavender
- white
10: No open flames are allowed in the machinery room unless?
- Approved by the installing contractor
- Never can be allowed
- Approved by the authorized person
- Only when combustion air is provided from outside of the machinery room
11: A class A3 refrigerant is considered
- toxic and somewhat flammable
- non-toxic and non-flammable
- toxic and non-flammable
- non-toxic but highly flammable
12: The 522 CMR 9.00 has adopted for reference ASHRAE ____
- 10
- III
- 25
- 15
13: Pressure vessels with an internal volume of 10 cubic feet or more
- shall use rupture discs or duel pressure relief valves
- shall use fusible plugs
- shall use pressure relief devices
- shall use pressure relief devices or fusible plugs
14: R-410A is classified as a ____ refrigerant on the safety matrix.
- A-1
- A-2
- B-2
- B-1
15: What happens after your initial inspection of a pressure vessel?
- Inspector leaves a metal tag with a certification listed on it
- Notify the AHJ to let them know that the system been inspected
- There is a temporary shut-down until a final inspection can be performed.
- Notify the Fire Marshal that the system has been inspected and approved
16: Group A2 refrigerants have a ______ toxicity rating than Group B1 refrigerants.
- lower
- higher
- the same
- there is no Group B1 refrigerants
17: Pressure vessels shall be provided with ___________in accordance with Section VIII of the ASME Boiler & Pressure Vessel Code
- over pressure protection and a rupture disc
- over pressure protection
- over pressure protection as well as a temperature protection device
- Pressure vessels need no type of protection as long as it is hydrostatically tested every three months
18: What is the refrigerant dichlorodifluoromethane?
- R-12
- R-134A
- R-123
- R-22
19: A Low-Probability System
- is a system highly likely to leak form a failed connection or component of such system
- is such that a leak of refrigerant from a failed connection will enter the occupied space
- is such that a leak of refrigerant from a failed connection can not enter the occupied space
- is such that any leak will cause injury or death to anyone within a 100 square foot area
20: The pressure relief device of a positive displacement compressor shall discharge in the ______________or in accordance with 9.7.8
- low side of the system
- the liquid side of the system
- the vapor side of the system
- high side of the system
21: Liquid level gauges must be provided with what?
- A low level mark
- A red line
- A relief valve
- Automatic shut-offs
22: R-12. R-22, and R-40 are considered Group I refrigerants.
- True
- False
23: A pressure vessel having an inside diameter of 6” or less shall be sufficient to withstand ____times the pressure of the saturation temperature of the refrigerant or ____times the critical pressure of the refrigerant, whichever is less.
- 2.5, 3.0
- 6.6, 6.6
- 3.0, 3.5
- 2.5, 2.5
24: Class 3 refrigerants are
- highly flammable
- non-flammable
- toxic
- non-toxic
25: 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 R-718
- Flush with RX-11
- Flush with ammonia
- Flush with R-11