Topics: ASHRAE/CMR
1: 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
2: Class T machine room
- has no flame producing apparatus permanently installed
- shall have remote controls to stop the action of the refrigerant compressor
- shall have refrigerant leak detecting systems installed inside and outside the room
- shall include closets used for setting equipment
3: When must refrigeration system covered by the code be inspected?
- Annually
- Not required
- Annually and when installed
- Upon installation
4: A premise or that portion of a premise where people transact business, receive personal service, or purchase foods, other goods is considered a
- mercantile occupancy
- business occupancy
- public assembly occupancy.
- commercial occupancy
5: When a refrigeration or air conditioning system is installed
- a field inspection shall be made before it is put into service
- the form of certificate shall be authorized by the Department of Pubic safety
- it shall be approved by the owner for proper operation.
- it shall not be operated below prescribed pressures
6: How are refrigerant blends classified?
- Blends don't have to be classified
- Based on worst case fractionation
- Based on best case Fractionation
- Based on the oil used
7: A hotel is considered a _______ occupancy.
- commercial
- mercantile
- residential
- institutional
8: Before you change the type of refrigerant in a refrigeration system, what three things must be done?
- nothing must be done
- you can't change refrigerants
- place sign, check for leaks, insulate
- make sure it's compatible, notify owner, notify A.H.J
9: Trichlorofluoromethane is the name of what refrigerant?
- R-502
- R-113
- R-11
- R-12
10: What refrigerant is an inorganic compound?
- R-410A
- Ammonia
- R-22
- R-132A
11: The ____ design is the maximum pressure for which a specific part of a refrigeration system is designed.
- critical pressure
- design pressure
- low pressure
- high pressure
12: Pressure vessels with an internal volume of 3 cubic feet or more
- shall use pressure relief devices or fusible plugs
- shall use pressure relief devices
- do not need pressure relief protection
- shall use fusible plugs
13: 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.
- 100
- 50
- 350
- 550
14: A relief valve discharge capacity is rated in
- temperature minus pounds of air per second divided by release rate squared
- Pounds of air per minute.
- PSIG
- PSIA
15: All serviceable components of a refrigeration system shall be provided with
- service manuals
- safe access
- name plates with markings referring to pressure and temperature in accordance with ASME Boiler and Pressure Vessel Code
- manufactures instructions on start-up procedures
16: A positive displacement compressor is
- is a reciprocating type compressor with 2 or more pistons
- a compressor in which the increase in pressure is attained by changing the internal pressure of the compression chamber
- where the compressor's suction pressure and the compressor;s discharge pressure is more than 50 PSI
- a compressor in which the increase in pressure is attained by changing the internal volume of the compression chamber
17: The color code of a tank of ammonia is
- white
- silver
- lavender
- light green
18: R-22 is considered a(n)
- CFC
- HCFCH
- HCFC
- HFC
19: What is the minimum height refrigeration piping should be placed against walls?
- 7.25'
- 72"
- Ceiling height
- 6'
20: What type refrigerant is NOT ozone depleting?
- CFC
- HCFC
- Halon
- HFC
21: R-410A is classified as a ____ refrigerant on the safety matrix.
- A-1
- B-1
- A-2
- B-2
22: 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.
- 75
- 15
- 55
- 50
23: 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
24: According to the 522 CMR Board of Boilers, refrigerant detectors, alarms, and the refrigeration mechanical room ventilating systems shall be tested
- regularly
- bi-annually
- quarterly
- annually
25: How many different groups of refrigerants are there?
- 15
- 11
- 3
- 7