Final answer:
The proper disposal method for different types of cylinders involves recovering any remaining refrigerant, rendering the cylinder useless, and recycling the metal.
Step-by-step explanation:
The proper disposal method for each type of cylinder is as follows:
A) Disposable cylinders:
These cylinders should be depressurized and rendered useless by removing the valve or puncturing the cylinder, followed by recycling the metal.
B) Recovery cylinders:
The remaining refrigerant should be recovered and then the cylinder should be rendered useless, with the metal being recycled.
C) One pound cans:
The remaining refrigerant should be recovered and the cans should be recycled.
D) Accumulator cylinders:
The remaining refrigerant should be recovered, and then the cylinders should be rendered useless, followed by recycling the metal.