Re: [MW:12261] Measuring thickness at crevice area - what is the best NDT method?

The best way to measure the corrosion under pipe support is using
LRUT(chime/pipe inspector. But this is a qualitative method and you will
get only the defect grading based on % of wall thickness loss.

regards,

On Thu, 18 Aug 2011 09:15:07 +0800, tong tong wrote:
> Dear team members,
>
> Good morning to all, During our on-stream inspection at jetty
> facilities area, we noticed most of the area in between pipe to pipe
> support were corroded(crevice corrosion) with sign of metal loss.
> Some
> of these piping especially small bore had been lifted, descaled by
> using hand tool and measured the actual thickness by using pit gauge.
> But the problem is, how about the big bore piping. Is it any NDT
> method that we can employ to measure the actual thickness of corroded
> area without lifting the particular piping. Appreciate if team
> members
> can also give the best preventive action. Looking forward for the
> response. Thank you
>
> Regards
>
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