Re: [MW:31519] ASME Material Re-certification

You have to explain to the inspector that the physics of the metallurgy dont make any difference between plates and pipes. This is basic metallurgy

Στις Παρ, 25 Σεπ 2020 στις 1:58 μ.μ., ο/η Rejoy Thomas <rejoythomas90@gmail.com> έγραψε:

Thank you George for the precise information. However, whether the inspector accept SA-20(for plates) when we perform above mentioned activities on seamless pipes like SA-106, although the chemical elements are similar on pipes and plates.

Kind Regards

On Fri, 25 Sep 2020, 3:20 pm George Dilintas, <dilintas@gmail.com> wrote:

The answer is given in SA-20 - 8.3.2. If your Al content is 0,020% or higher you dont need to do any test

Στις Παρ, 25 Σεπ 2020 στις 7:13 π.μ., ο/η Rejoy Thomas <rejoythomas90@gmail.com> έγραψε:

Thank you George for your valuable advice. If you see PG 10.2.2.3, it requires the documentation of killed steel. How to document whether the steel is killed or not, except mentioning the Silicon/Aluminium content. Is it possible to perform some tests?

Best Regards

On Wed, 23 Sep 2020 at 17:20, George Dilintas <dilintas@gmail.com> wrote:

Since the Code is Sect I + B31.1 you have to use PG-10. The  approach is similar to UG-10.  Since you lack full identification  and If you know the spec of the materials then you implement PG-10.2 . If not then you implement PG-10.3. In both cases you have to perform chemical analysis and mechanical tests

Στις Τρί, 22 Σεπ 2020 στις 10:17 π.μ., ο/η Rejoy Thomas <rejoythomas90@gmail.com> έγραψε:

Dears,

         How can I recertify raw pipes, where the material certificates are missing/cannot be recovered..! The code of construction is ASME Sec I & B31.1. As per Sec viii UG-10, is it possible to recertify pipes that don't have certificates, by performing mechanical tests? Please share your knowledge with regard to this. Your reply would be highly appreciated.

Best Regards

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Ph.D in Mechanics of Solids - Computational Mechanics

A.I.S, A.N.I, IRCA Lead Auditor

Welding, Stress Analysis, Corrosion, QA/QC, Failure Analysis, Risk Analysis

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Dr. Georgios Dilintas,

Dipl. Ing. In Aeronautic and Space Engineering

Ph.D in Mechanics of Solids - Computational Mechanics

A.I.S, A.N.I, IRCA Lead Auditor

Welding, Stress Analysis, Corrosion, QA/QC, Failure Analysis, Risk Analysis

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