Welding of stainless steel pipes 1

• Nov 21, 2019

• #2

kingnero

Mechanical

Aug 15, 2009

1,783

BE

This should be defined in the standards or the tech specs.

 

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• Nov 21, 2019

• #3

DVWE

Petroleum

Apr 5, 2007

2,373

US

Or the code of construction that you are fabricating the stainless pipes to.

The devil is in the details; she also wears prada.

 

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• Nov 21, 2019

1
• #4

moltenmetal

Chemical

Jun 5, 2003

5,504

CA

The answer is no, it is unlikely that 100% radiography is mandatory. It is POSSIBLE that somebody has required this though, as a result of relying on 100% joint efficiency in a calculation, or because of the nature of the service.

 

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• Nov 22, 2019

• #5

weldstan

Materials

Jun 24, 2011

2,806

US

In general it is not mandatory in most ASME Piping Codes but is for specific applications like severe cyclic service under ASME B31.3. I think in your case, as stated by moltenmetal, that your contract specification requires it.

 

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• Nov 24, 2019

• #6

Dhurjati Sen

Materials

Dec 14, 2017

1,005

IN

Dear saraycad,

If it is in the client's spec, you need to carry it out. This is not as per any piping code.

I give you an example for better understanding. Suppose CS piping is upgraded to SS and the service is rich amine. Well, the client removes PWHT however retaining the RT.

Regards.

DHURJATI SEN
Kolkata, India

 

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• Nov 26, 2019

• Thread starter
• #7

saraycad

Mechanical

Jul 29, 2001

27

BA

Thank you guys, appreciate your effort.
Got a main picture - it is stated in Contract - must be 100%.
Thnx.
Best regards

 

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