Ultrasonic device to Find air leakage at Surface Condenser

[rotciv]

Hi, folk

Someone knows a brand of Portable NDT Ultrasonic device to perform an air inleakage at Surface Condenser.

 

[metengr]

Here are some options;

http://www.davidson.com.au/products/acoustics/

sdtnorthamerica.com/PDFs/Condensor leak detection improves heat rat... - 31k

 

[rotciv]

metengr

Thanks

 

[JEB66]

Here is the probe I use to use

http://www.uesystems.com/products/up2000.htm

 

[EdStainless]

I have seen the UE equipment used for this.

How big of a leak are you looking for? There are other ways to go.

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Corrosion never sleeps, but it can be managed.

http://www.trenttube.com/Trent/tech_form.htm

 

[marada93]

I agree with Ed. Having tried (and failed) to locate condenser leaks with ultrasonic detectors, I'll use about anything else first. Too much background noise.

 

[rotciv]

Since Commissioning our Jogging Ejector is running, The OEM Graham Vacuum came to site for inspection and they did not find the root cause on this issue. They recommended applay shave scream on the flange joints to find the possible leakage, we did it without successful

 

[metengr]

What type of surface condenser is this water or air cooled? Check all of your vent valves to make sure they are closed -sometimes it can be as simple as leaving a vent valve cracked open as the source of air inleakage. Check all flanged connections to the shell side of the condenser.

 

[EdStainless]

You should look at analyzing the gases coming off of your condenser. Is it air? What about other non-cond?

I have seen guys start wraping every joint with Glad wrap looking to see if they could stop a leak. I have even seen it put across tube sheets.

Are you making vacuum? Does it fluxuate while you are running?

= = = = = = = = = = = = = = = = = = = =
Corrosion never sleeps, but it can be managed.

http://www.trenttube.com/Trent/tech_form.htm

 

[cub3bead]

Did you check the expansion joint between the condenser and the steam turbine? I know of one plant where this was found to be the source of excess air leakage. In this case the problem was caused by overspray deposits of Zn rich primer on to the stainless steel expansion joint. It caused pinholes to develop in the expansion joint.

Liberal application of shellac on the flanged joints helps also.

are you seeing elevated DO in the hotwell condensate?