Re: [MW:25560] Hydrostatic leak testing

Dear Prem,

It is not acceptable if it is sesitive leak test.

All joints may me primed and painted prior to leak test,unless it ia a sessitive leak test.As per construction cattgory it is M fluid service.Then should be sensetive test as per ASME B31.3 - M345.

So joints painted is not acceptable.

Regards, M.S.Viswanathan

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On Mon, 10/17/16, 'prem_nautiyal26' via Materials & Welding <materials-welding@googlegroups.com> wrote:

Subject: [MW:25557] Hydrostatic leak testing
To: "materials-welding" <materials-welding@googlegroups.com>
Date: Monday, October 17, 2016, 2:07 PM


Dear all
Vendor has offered piping spool for hydrostatic
test after painting.
Code of construction is ASME B31.3. Category M
fluid service.

Vendor argues that as per ASME B31.3 clause
345.3.1 all joints may be primed and painted prior to leak
testing.
However same clause also mentions that all joints
Welds shall be left exposed for examination during leak
testing which is contradictory. 
Nothing is mentioned in hydro test procedure
about painting.
How to accept ?
Regards 
Prem
 Nautiyal 9769316004


Sent from my Samsung
Galaxy smartphone.



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