Dear,
Q.Few Plates & Pipes have few remaining marking.
A. You should ask your perchaser for MTC from vendor.
and secound option. mail to concerned directly for MTC .
the vendor may be give you MTC if you provide the detail of plate or pipe.
Hello Sir,
I have few Plates & Pipes which are in the open yard (Open to atmosphere condition) since last 10 years. Few Plates & Pipes have few remaining marking. MTCs are also not available. Shall we re-certify and use it after 10 years?
Is there any Provisions for Max.validity of Material Certification by Code, If i even retrieve all MTCs somehow for the materials which are still having marking on it?
Regards,
Hardik Desai
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
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
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
--
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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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
https://materials-welding.blogspot.com/
https://www.linkedin.com/groups/122787
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