ASME Material Re-certification

[Rejoy Thomas]

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

[GMT]

Dear Rejoy,

You should prepare the sample for the mechanical & Chemical test for material identification.

my previous experience with ASME Inspector, when i lose MTC and not identification on Raw material,  told perform Mechanical and Physical test as per material specification.

Best regards

GMT

QA&QC Engineer

FAUZ Engineering Pvt.Ltd.

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[Rejoy Thomas]

Hi,

    Appreciate your email. Could you please refer the code clause regarding this?

Best Regards

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[GMT]

Dear Rejoy,

as per above email you can follow ASME Section VIII-Div 1 UG10.

compulsory UG10 (c).

On Wed, Sep 23, 2020 at 4:56 PM GMT <gmt...@gmail.com> wrote:

Dear Rejoy,

as per above email you can follow ASME Section VIII-Div 1 UG10.

compulsory 

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[George Dilintas]

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

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

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

[Rejoy Thomas]

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

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[George Dilintas]

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

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[Rejoy Thomas]

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

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[Sourav Bohrays]

if marking is available than very good.simply go for mechanical and chemical test.you should ensure all chemical element should be reported in report given in spec chemical table. 

if in qcp final document is MTC may be NCR raise for this.

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[Kannayeram Gnanapandithan]

Based on chemistry of silicon in the material, u can specify killed or not

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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[Rejoy Thomas]

Dear Mr Kannayeram,

                                     Yeah, we could say whether the steel is killed based on the Silicon / Aluminium percentage. The question is about code clause, so that the inspector would be convinced.

Best Regards 

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[George Dilintas]

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

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[hardik desai]

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  

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[Sourav Bohrays]

for this case firstly raise NCR than go for mechanical n chemical testing than recertify to specification nd edition you required.

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[Sourav Bohrays]

sa20 and sa106 are different spec diff manufacturing process how you can comply on basis of other spec this is unacceptable recertify only basis of related specification

[james gerald]

Try ASME Sec-IIA   SA-530.

Thanks & Regards

J.Gerald Jayakumar

https://groups.google.com/d/msgid/materials-welding/CAOWr6k_iBGoRgTAifYbk33KuzdeLD1uaFRbar6PyW0ZaEiCaEw%40mail.gmail.com

.

[GMT]

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.

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[james gerald]

1. I suppose you need to examine the conditions of Plate and Pipe before it is being used.

2. Plate and Pipe may be subjected to Atmospheric corrosion and observed with Pits. So you need to check whether the minimum thickness Tolerance as given in SA-20 for Plates & Sa-530 for Pipes is complied.

3, MTC is not an issue, if Traceability is Available then you can check with the Mill/stockist for MTC else you can create an identification and do the tests as recommended by Material standard.

4. 10 years is quite a long period, no restriction in code some clients like Tatweer Bahrain put restriction on Year of manufacturing to 5 years and hence check the specification.

Thanks & Regards

J.Gerald Jayakumar

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