Materials & Welding: RE: [MW:31100] Re: Coating on welds prior to hydro test API code

Monday, July 6, 2020

RE: [MW:31100] Re: Coating on welds prior to hydro test API code

API does not have any piping design & construction code. API-570 is on post construction , maintenance and inspection. Hence ASME B-31.3 is followed commonly for fabrication, inspection and testing.

According to B 31.3 – Clause 345.3 Preparation for Leak Test

345.3.1 Joints Exposed:- (d) All joints may be primed and painted prior to leak testing unless a sensitive leak test (para. 345.8) is required.

345.8 Sensitive Leak Test: The test shall be the Bubble Test.

Thanks.

P.Goswami.P.Eng, IWE.

Independent & Consulting Welding & Metallurgical Specialist

Aramco Approved Designated Project Welding Engineer(DPWR)

Linkedin: https://www.linkedin.com/in/pradip-goswami-2999855/

Email:pgoswami@rogers.com,pradip.goswami@gmail.com

Cell/Whasapp:1-905-9793232

From: materials-welding@googlegroups.com <materials-welding@googlegroups.com> On Behalf Of madhan chozhan
Sent: July 4, 2020 6:32 AM
To: materials-welding@googlegroups.com
Subject: Re: [MW:31097] Re: Coating on welds prior to hydro test API code

Code of construction - ASME B 31.3 but need to know if any API code governs the piping construction and related testing requirements.

Thanks,

Madhan

On Sat, Jul 4, 2020 at 8:15 AM Materials & Welding <materials-welding@googlegroups.com> wrote:

what is your code of construction?
On Friday, 3 July 2020 at 09:26:29 UTC+5:30 madhan wrote:
Dear Experts,

Can you throw some light on the subject? Does any API code specify about the coating requirements on welds prior to hydro testing?

Material - A106 Gr B, A519 Gr 4130.

Thanks,
Madhan

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