What kind of container may a technician pump a recovered low-pressure refrigerant charge into?
Correct Answer
D) A DOT approved recovery cylinder rated for that refrigerant
Recovered refrigerant goes into a cylinder built and approved for the purpose: a Department of Transportation approved recovery cylinder with the correct service pressure rating, in good condition, and within its retest date. Disposable cylinders are made for one way delivery and must never be refilled. Nitrogen cylinders and oil drums are not approved for refrigerant, are not built for the service, and cannot be transported legally with refrigerant in them.
Why This Is the Correct Answer
DOT approved recovery cylinders are designed, tested and marked for repeated filling with refrigerant. Using one keeps the recovered charge in a container rated for the pressures involved and legal to transport, and it is the only container among these that meets the requirements for handling recovered refrigerant.
Why the Other Options Are Wrong
Option A: The disposable cylinder that the new refrigerant was delivered in
Disposable delivery cylinders are single use containers. Refilling one is unsafe and not permitted, regardless of how much capacity appears to be left.
Option B: Any empty nitrogen cylinder once its valve has been changed
A converted nitrogen cylinder is not approved or marked for refrigerant service and cannot be legally filled or transported with refrigerant in it.
Option C: A drum of the type used for storing compressor oil
An oil drum is not a pressure vessel at all and would fail long before it held a usable quantity of refrigerant.
Memory Technique
Approved, rated, dated. Three checks before a drop of recovered refrigerant goes in.
Reference Hint
Recovered refrigerant must go into a DOT approved recovery cylinder that is properly rated and within its retest date.
More epa-608-type-3 Questions
Some jobs on a chiller count as a major repair under the refrigerant rules, which changes what a technician is allowed to do with a badly leaking machine. Which job falls into that category?
An owner asks how many pounds of refrigerant the rules allow to be left inside a chiller once the recovery has been signed off. What is the correct answer to give him?
The motor of a hermetic centrifugal chiller sits inside the pressure boundary rather than outside it on a shaft. What follows from that construction?
An oxygen monitor is used to decide whether a chiller machine room is safe to enter after a refrigerant release. Below what oxygen reading is the atmosphere treated as oxygen deficient?
A low-pressure chiller's rupture disc has a discharge line running from it. Where does that line have to terminate?
A refrigerant vapor detector in a chiller machine room reaches its alarm level. Besides sounding, what is that alarm expected to do?
Which piece of equipment requires a technician to hold Type III certification before it may be serviced?
What property of the refrigerant is what actually places an appliance into the low-pressure category?
During normal operation, what condition exists inside the evaporator of a running low-pressure centrifugal chiller?
In what unit is the required final recovery vacuum for a low-pressure appliance normally expressed?
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