Pneumatic testing requirement

[Manish Kumar]

Dear Sir,

Please advise for pneumatic testing, if Welding joint is covered from painting.Can we witness for pneumatic testing of weld.

Please advise in this issue.

Regards

[pravean ashok]

Dear Manish 

As per ASME B31.3 para 345. 3.1 (d) is not allowed painting after Pneumatic testing is not accepted the purpose of the testing is to check the integrity of the weld joint to ensure the sound weld 

Regards 

Pravean

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[Alcindo Jardim]

No

You must take off the paint of the weld....

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[Mohammed Abdul Sayeed]

Dear 

Please refer as below.

Sent from my iPhone

On Apr 19, 2021, at 7:40 PM, Manish Kumar <mkmk...@gmail.com> wrote:



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[Kannayeram Gnanapandithan]

it is better to do it in black condition including base material to ensure no leakage.

THANKS & BEST REGARDS,

KG.PANDITHAN, BE, IWE,  CSWIP 3.1,

ISO 9712 Level 2 in VT,

ASNT-Level II in PT,MT,RT & UT,

LA ISO 9001-2015,

International Welding Engineer. 

CONSULTANT-WELDING & QUALITY

Mobile no: +919940739349

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[Vinoth Rajendran]

Hi,

ASME Section VIII Div. 1 UG-100

Unless permitted by the user or and his designated agent, pressure retaining welds painting not permitted before the pneumatic pressure test.

Thanks & Regards,

Vinoth. R

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[kingslygeo vargheese]

Hi,

If the test is as per ASME B31.3 the pneumatic leak test can be carried out with painting.

The standard straightly restricts insulation before testing as per 345.3.1 for all testing.

Painting before testing is not allowed for Sensitive leak tests which are described in 345.8.

The pneumatic Leak Test is covered in 345.5.

But many CLIENT SPEC RESTRICTS THE PAINTING BEFORE HYDRO TESTING.

Regards

V. Kingsly Geo

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