it may be more economical to remove the old coating and prepare the surface for the new coating in one operation. If that is the case, abrasive blasting may be more economical, despite being slow. If so, you may also have to look at a holding primer, LMP]UQLQÅKI\QWV WZ JW\P 1\¼[ I V]UJMZ[ exercise, really.
in one process.
blasting. You will be days ahead on your schedule and budget if you UHPWJ and then grit blast.
A A
Use of thermography to detect lining breakdown
vice operating in the tempera- Q
ture range of 50 to 100 °C. Because of the levels of carbon dioxide (CO2
IVL PaLZWOMV []TÅLM 02S) in the
XZWKM[[ [\ZMIU IV QV\MZVIT OTI[[ ÆISM TQVQVO PI[ JMMV [XMKQÅML QV ILLQ\QWV \W I corrosion allowance. It has been sug- gested that thermography/thermal imag- ing could be a valid inspection technique to detect any breakdown in this internal lining in service. This would be useful information, as it would give an indica- tion of sites that might become directly exposed to the process stream and could therefore be early sites for corrosion. These sites would then be targeted by more conventional inspection techniques to monitor for any resultant wall loss. The vessel wall thickness varies be- tween 10 and 30 mm and the internal
NACE International, Vol. 51, No. 11 November 2012 MATERIALS PERFORMANCE 51
We have an applica- tion for a carbon steel pressure vessel in liq- uid hydrocarbon ser-
I believe UHPWJ is your best option. You will spend hours and hours and much money remov- QVO \PQKS ÅTU KWI\QVO _Q\P OZQ\
I would think that abrasive blast- ing would be your best bet. It will remove the coating and give you I []ZNIKM XZWÅTM NWZ \PM ZMKWI\ ITT
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