NACE MR0175/ISO 15156 SSC for CS weldments 1

[Mateeng]

Hello Mates,
I have seen and it is quite crystal clear that SSC may be applicable to Materials and well described in NACE/ISO. Any idea under which circumstances it may required for weldments and forced us to do for PQR in Sour Services. Any reference to NACE Clause is appreciated.
Thanks

 

[SJones]

Did you not see

Part 2 - 7.3.1
Part 2 - 7.3.3
Part 3 - 6.2.2

amongst other clauses?

Steve Jones
Corrosion Management Consultant

http://www.linkedin.com/pub/8/83b/b04

All answers are personal opinions only and are in no way connected with any employer.

 

[Mateeng]

Hi Steve,
Thanks for your reply. Actually I have to rephrase my question.
The SSC test may be applicable to CS and low alloy base metals. The SSC test is not applicable to CS and LAS weldments as long as they met the hardness requirements as per clauses 7.3.1 and 3. Is that correct understanding?
Thanks

 

[SJones]

Yes, and the nickel content is correct, and so long as the end user has not specified a requirement for such a test.

Steve Jones
Corrosion Management Consultant

http://www.linkedin.com/pub/8/83b/b04

All answers are personal opinions only and are in no way connected with any employer.

 

[EdStainless]

In many cases the test is required, users won't accept just the hardness and chemistry.

= = = = = = = = = = = = = = = = = = = =
P.E. Metallurgy, Plymouth Tube

 

[Mateeng]

Steve, Edstainless,
Under which circumstances we may or dictate to ask for SSC for weldments based on your experiences.
Thanks

 

[SJones]

If you are the specifier, you can dictate anything you like so long as you are prepared to pay for it and a supplier can provide it.

Your question boils down to: can you trust ISO 15156 as it stands, or are you so uncomfortable with it that you require some alternative form of material performance verification? We can't advise on how to feel about it. It's a philosophical question about how much compliance is enough.

Steve Jones
Corrosion Management Consultant

http://www.linkedin.com/pub/8/83b/b04

All answers are personal opinions only and are in no way connected with any employer.

 

[EdStainless]

Some users specify how they want the validation of chemistry and hardness done.
Chemistry is fairly straight forward, but hardness testing not so much. How many tests, done where,and by what method. If you are sticking with chem and hardness (which has been shown to work) then you might want a little more support data supplied.

= = = = = = = = = = = = = = = = = = = =
P.E. Metallurgy, Plymouth Tube

 

[Mateeng]

Thanks all.