UG-99 k) and UG-100 e) are identical with respect to paint.
Vessels, except for those in lethal service, may be painted or otherwise coated either internally or externally, and may be lined internally, prior to the pressure test. However, the user is cautioned that such painting / coating /lining may mask leaks that would otherwise have been detected during the pressure test.
Section VIII Div 2
8.1.2 e)
Vessels may be painted or coated either internally or externally, and may be lined internally, prior to pressure testing. However, the application of paints, coatings and linings is not permitted prior to
hydrotest if the vessel is to contain fluids of such a nature that a very small amount mixed or unmixed with air is dangerous to life. The user is cautioned that the application of paints, coatings, or linings may mask leaks that would otherwise be detected during the pressure test.
In a nutshell, painting prior to pressure test will increase rework costs.
Johnson Madukayil
On Tue, Dec 1, 2009 at 3:07 AM, A D <alouis1972@yahoo.co.in> wrote:
From: daniel iordache <daniel.iordache@gmail.com>Date: Monday, 30 November, 2009, 8:09 PM
Subject: [MW:3771] hydrotest b31.1
Hi,I have a strange situation about Hydrostatic Test ......Until now we used to let all welds of piping system no painted........now our client read in B31.3 and open the discussion that in code is wrote that is allowed to paint the welds before hydrostatic test......What do you think about that?????regards--
--
Daniel Iordache
Bureau Veritas - Angola
Mechanical& Welding Surveyor
Mobile Ao: +244921544583
Mobile Ro: +40721731728
E-Mail: daniel.iordache@gmail.com
daniel_iordache@yahoo.com
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The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.
--
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The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.
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