Topics: ASHRAE/CMR
1: A restaurant is classified as a
- commercial occupancy
- mixed occupancy
- public assembly occupancy
- large mercantile occupancy
2: The pressure relief device of a positive displacement compressor shall discharge in the ______________or in accordance with 9.7.8
- high side of the system
- the vapor side of the system
- the liquid side of the system
- low side of the system
3: How are refrigerant blends classified?
- Based on best case Fractionation
- Blends don't have to be classified
- Based on worst case fractionation
- Based on the oil used
4: What section of ASHRAE-15 governs pressure vessels?
- Section 9 ASHRAE-15 ASME VIII unfired
- Section 6 ASHRAE-34 ASME VIII unfired
- OSHA
- Section 7 ASHRAE-15 ASME VIII fired
5: Ammonia is under what safety classification?
- B3
- A3
- B2
- B1
6: What refrigerant doesn't have to be classifted?
- R-717
- R-711
- R-718
- R-134a
7: Pressure relief devices are marked with a ____________ signifying compliance with the ASME Boiler & Pressure Vessel Code.
- UV or UR
- UL and UR
- UL and UM
- UM or UL
8: A room having machinery but no flame producing apparatus permanently installed and operated is considered a
- Class M machinery room
- Class B machinery room
- Class T machinery room
- Class A machinery room
9: What is an example of institutional occupancy?
- Hospital
- Dorms
- Shopping mall
- Football stadium
10: When a pressure gauge is permanently installed on a system, it must be ___ times the design pressure of the system.
- 2.2
- 1.2
- 1
- 1.5
11: Name an HCFC refrigerant(s):
- R-22
- R-123
- R-11
- both a & b
12: Which refrigerant class listed below is the most flammable?
- A-1
- B-2
- C-3
- A-3
13: What is the refrigerant chlorodifluoromethane?
- R-22
- R-12
- R-123
- R-134a
14: 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
15: What is the minimum size of the discharge pipe?
- Same size as the outlet of the relief valve
- One pipe size larger that the inlet of the relief valve
- Depends on size of manifold
- All of the above
16: When air is ducted through a machine room that services occupied space, What must be done?
- Insulated and cross broke
- Flanged and gasketed
- Welded and seamed.
- Ducted and sealed
17: A class B2 refrigerant is considered
- non-toxic and highly flammable
- non-toxic and non-flammable
- toxic and somewhat flammable
- toxic and non-flammable
18: Pressure limiting devices are not required for systems containing less then ________ refrigerants.
- 13.9 lbs
- 6.6 lbs
- 44 lbs
- 22 lbs
19: According to ASHRAE Standard-15 9.8 Positive Displacement Compressor Protection, the pressure-relief device discharge into
- the low-pressure side of the system
- the high side of the system
- the liquid receiver
- both a and c are correct
20: How many different groups of refrigerants are there?
- 7
- 11
- 15
- 3
21: How many flammability classifications are refrigerants in?
- 5
- 7
- 2
- 3
22: What type of copper is not permitted on refrigeration systems?
- Type L
- Type N
- Type K
- Type M
23: How much clearance do you need around the perimeter of electrical panels?
- 36"
- 24"
- 12"
- 18"
24: A pressure relief should be located at least _______ from windows and doors.
- 30'
- 25'
- 20'
- 15'
25: Large Mercantile occupancy is a premise or that portion of a premise where more than ____ persons congregate on levels above or below the street level to purchase personal merchandise.
- 250
- 400
- 350
- 100