While recovering refrigerant with certified equipment and proper technique, a small puff escapes as the technician breaks the hose connection at the service port. How does the venting prohibition treat that release?
- AIt is a reportable violation that must be logged with the regional EPA office
There is no incident report filed for a hose disconnect. Creating a reporting duty for every fitting break would swamp the system and is nowhere in the rules.
- It is a de minimis release that is allowed during a good faith recovery attempt
- CIt is allowed only when the refrigerant involved is a non-ozone-depleting blend
The allowance does not depend on refrigerant type. It applies during good faith recovery whether the refrigerant is ozone depleting or a substitute.
- DIt is allowed only on appliances that hold five pounds of refrigerant or less
Charge size does not control the de minimis concept. The same trace losses occur on a chiller as on a small appliance and are treated the same way.
Why B is correct
The rule recognizes that no hose connection is perfect. Trace releases that occur while a technician is genuinely trying to recover refrigerant with proper equipment fall under the de minimis allowance and are not treated as knowing venting.
What this question is testing
This checks whether the candidate understands the de minimis concept as a narrow allowance tied to good faith recovery, rather than a general tolerance for small releases. It also verifies that the candidate does not attach imaginary conditions about refrigerant type or appliance size to the allowance.
On the job
The practical difference between de minimis and a violation is intent and equipment. A technician using low-loss fittings, clearing hoses into the recovery machine, and losing a wisp at the coupler is fine. A technician who cracks a valve to drop pressure so the job goes faster is venting, even if the amount is similar. Inspectors and juries look at the whole practice, not the single puff, so build habits that show good faith.
Memory technique
Accident at the coupler is de minimis; a hand on the valve is venting.
Exam tip
De minimis always travels with the phrase good faith. If the release was deliberate or convenient, it is venting.
Where to look it up
De minimis releases during good faith recovery, recycling, or disposal attempts are not violations of the venting prohibition.