Refrigerant Cylinder Safety and Storage Flashcards
6 cards from real EPA 608 609 practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Refrigerant Cylinder Safety and Storage flashcards as text
What does the 'tare weight' stamped on a refrigerant cylinder represent?
Answer: Weight of the empty cylinder
Tare weight is the weight of the empty cylinder and is used to calculate how much refrigerant the cylinder currently contains.
What does DOT regulation prohibit regarding disposable (non-refillable) refrigerant cylinders?
Answer: Refilling or reusing them for refrigerant storage
Refilling DOT-marked non-refillable cylinders is illegal and extremely dangerous because the cylinder walls are not rated for repressurization.
What minimum pressure rating must recovery cylinders meet for use with R-410A refrigerant?
Answer: 400 psig
R-410A operates at much higher pressures than older refrigerants, requiring recovery cylinders rated at a minimum of 400 psig (DOT-4BA400 or equivalent).
How often must most DOT-specification refrigerant cylinders undergo hydrostatic retesting?
Answer: Every 5 years
DOT requires hydrostatic requalification of most refrigerant cylinders every 5 years to ensure structural integrity.
What does a star (*) stamped after the retest date on a DOT cylinder indicate?
Answer: The cylinder qualifies for a 10-year retest interval
A star after the retest date means the cylinder passed an enhanced test and is approved for a 10-year requalification interval instead of the standard 5 years.
When are valve protection caps on refrigerant cylinders required to be in place?
Answer: During storage and transportation
DOT regulations require valve protection caps to be installed whenever cylinders are stored or transported to prevent valve damage and accidental discharge.