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Re: [MW:25576] Hydrostatic leak testing

Dear All,

If it is already  painted , raise an NCR and it can be closed by getting an approval letter from client stating that it is acceptable to them, other wise they have to at least remove the paints on the welds and retest it. Please find the ASME clause extract.


On Thu, Oct 20, 2016 at 1:09 PM, Kumar <sk7920541@gmail.com> wrote:
Dear Prem,

The provision to do priming & painting is only optional ( "may be ").
So vendor cannot argue that it is mandatory to be painted !! You may
tell such paintings may mask pin-holes or any other seepages during
test. An amicable agreement to be made.

Also all welds should be exposed means - NOT to be hidden (like
undergrond joints) or to make insulation etc.  doesnt mean couldn't be
painted..

Hope this info helps you little.

Regards,
Kumar.

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