Chemical Engineering Question:
Download Questions PDF

What are some common causes of gas pipeline vibration 20 Carbon Steel line?


Check / consider the following:

► The upper pressure range and /or the smaller pipe diameters prompts me to investigate the possibility that the gas is reaching critical flow somewhere downstream within the pipe. When a gas gets to critical flow, sonic booms (producing vibration) are expected. In fact, one of the main means by which the additional pressure in the pipe is lost.

► If the source is a compressor, look for surging.

► If the source is a tower, look for pressure cycling in the tower

► Look at critical flow through any control valve that may be in the line.

► Are there any vapors in the line, which can condense and produce two-phase flow? Two-phase flow can cause vibration.

In chemical plant design, if we suspect two-phase flow, we instruct the piping designers to provide special anchoring.

Download Chemical Engineering Interview Questions And Answers PDF

Previous QuestionNext Question
Explain disadvantages of gear pump?While there, are many tests available to detect leaks on vessels, is there a technology available to quantify the leak, or measure the flow through a leak?