Ultrasonic Inspection from the internal insulated vessel
Ultrasonic Inspection from the internal insulated vessel
(OP)
Hi all,
Does anybody have a good or bad experience using ultrasonic measurement wall thickness from inside the insulated vessel ( in case we cannot strip of the insulation due to short shutdown duration and limited manpower). Is it okay from inspection engineering view and is the result acceptable.
Please advise.
Thanks
Does anybody have a good or bad experience using ultrasonic measurement wall thickness from inside the insulated vessel ( in case we cannot strip of the insulation due to short shutdown duration and limited manpower). Is it okay from inspection engineering view and is the result acceptable.
Please advise.
Thanks





RE: Ultrasonic Inspection from the internal insulated vessel
RE: Ultrasonic Inspection from the internal insulated vessel
Intrinsic safety might also be an issue you'll have to deal with -there are intrinsically safe ultrasonic thickness gauges on the market.
As far as the ultrasonic measurement goes even insulating material adhering tightly to the OD of the vessel will still allow a good measurement of the wall thickness because of the big variation between the acoutic impedances of the metal and the insulation.
RE: Ultrasonic Inspection from the internal insulated vessel
Really appreciate that great answers, looks like i have to start from buying a small probe.
Thanks all
RE: Ultrasonic Inspection from the internal insulated vessel
Once you locate your area of interest you might want to look at Access Plugs like the ones from Access Plug Flange. We have these on nearly all our insulated tanks that are witnessing corrosion
http://www.inspectionplug.com/