Quote:
Originally Posted by Harry Chickpea
WOW! Huge flow there. I wouldn't even DARE go into working something like that. Does that stuff "sing" (have sonic effects in the pipes)?
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Actually Harry, there is not always a correlation between pressure and flow. A pipeline might have zero flow, and still have high pressure. Obviously, in an open pipe scenario, the higher pressure will provide for higher flow.
What I think you meant was a referral to a big inch pipe having a high capacity for flow.
I spent a great deal of time managing projects (tie-ins, hot-taps, and pipe replacements) on 30" and 36" pipelines. Many folks would be surprised to find out that we actually replaced (welded in) short sections of 36" pipe with gas still in the pipe. (although at zero flow). We did this hundreds of times over the years. Interesting yes?
It's all about the process, and understanding certain things really well.
These same pipes move (on average) anywhere from 1.5 to 3 billion cu feet of natural gas daily. At 1000 psig, a few miles of these pipes could power a large city for a very long time.
To answer your question, normally it does not "sing" while moving through the pipeline. In some situations, it will make noise when going through a flow control device such as an orifice plate, or even a pinched valve. When going From a 36", through an 8" to atmosphere,........I cannot begin to describe how loud it is. But I would use foam ear plugs along with ear muffs, and the noise from that blowdown would vibrate your teeth. You actually had to hold your mouth open to prevent pain in your ears. I will never forget my first time. When it got loud, I was looking around to see if any of the "old" guys were hauling helnee. A few short years later, "I" was the old guy, and I took great pleasure (when the newbies would look at me)......I would just yawn.....lol
B