Regulations & Safety第 55 / 240 题
A technician receives 'empty' return cylinders from a job. Which practice is safe and legal?
a.Refill disposable (DOT-39) cylinders to save money
b.Store cylinders lying down next to a furnace
c.Remove the pressure relief device to fit more refrigerant
d.Recover the heel; use only in-date, sound cylinders
解析
Safe, legal practice is to recover any remaining refrigerant heel and to use only reusable recovery cylinders that are undamaged and within their required hydrostatic test interval. Disposable DOT-39 cylinders must never be refilled, cylinders should not be stored near heat sources, and pressure relief devices must never be removed. Damaged or out-of-date cylinders should be taken out of service.
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同考点相关题目
- Which toxic gas is a well-known decomposition product formed when a chlorinated refrigerant contacts a flame?
- 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?
- To avoid overfilling a recovery cylinder past 80 percent, the most reliable method is to:
- How should refrigerant cylinders be secured during transport in a service vehicle?
- DOT-approved refillable refrigerant cylinders generally must undergo hydrostatic testing (requalification) at what interval?
- Reclaimed refrigerant that will be resold must be reprocessed to meet which purity standard?
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