Pipe diameter through insulation 1

[MachinaMan]

Hi all,

I am looking for a proven way to measure the outside diameter of our main steam and reheat lines (20 to 38" OD) without removing insulation or drilling holes into it (online).

The insulation material is ceramic brick covered by steel cladding.

Could ultrasound, xray or radar be used to take these measurements?

Thanks for your help.

 

[2CRUDE]

xray can. we did a steam line corrosion survey on a section while the line was in service and coved in insulation.
we used a crawler by VJ Technologies that they were demonstrating.

 

[MachinaMan]

Thanks 2CRUDE,

I'll look into VJ Tech.

 

[MJCronin]

Machineman.....

As I read between the lines, the new power plant owners have discarded all PIDs, flowsheets and probably all other important plant documentation.

The plant has probably been sold a couple of times and during every sale, all documents have been destroyed.

Am I right ?


-MJC

 

[MachinaMan]

Hi MJCronin,

Actually this isn't the case at all.
I have the OD of the pipe but i need to measure it precisely at 90 deg intervals to determine its ovality.

Sounds like you guys have had to deal with a difficult situation. Working in a power plant without drawings and documentation must be a nightmare.