Coating on welds prior to hydro test API code

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madhan chozhan

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Jul 2, 2020, 11:56:29 PM7/2/20
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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

Materials & Welding

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Jul 4, 2020, 12:15:06 AM7/4/20
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what is your code of construction?

k7moorthi

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Jul 4, 2020, 4:32:29 AM7/4/20
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Hello Mr.Madan,

Kindly refer the snapshot of API-570 , which has been cross referred ASME B31.3 & ASME PCC-2.


Pressure test painitng requirements.png

madhan chozhan

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Jul 5, 2020, 3:07:26 AM7/5/20
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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

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pgos...@rogers.com

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Jul 5, 2020, 11:19:09 PM7/5/20
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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:pgos...@rogers.com,pradip....@gmail.com

Cell/Whasapp:1-905-9793232

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