Regulations & Safety第 53 / 240 题
A technician is filling a recovery cylinder with liquid refrigerant and it is approaching the 80 percent mark. Why must the cylinder never be overfilled?
a.Liquid refrigerant expands as temperature rises, and a hydrostatically full cylinder can rupture violently
b.The refrigerant will lose its color
c.Overfilling improves recovery speed with no risk
d.It only matters for disposable cylinders
解析
Liquid refrigerant expands significantly as temperature rises, so a cylinder filled beyond 80 percent can become hydrostatically full (completely liquid) and rupture with tremendous force. Overfilling does not affect color and is never risk-free, and the 80 percent limit applies to recovery cylinders, not only disposables. A scale should be used to prevent overfilling by weight.
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