Materials & Welding

Dear All. Does any body know which standard or even specification of oil and gas company said about minimum Longitudinal distance of corrosion probe and corrosion coupon? Regards. -- https://materials-welding.blogspot.com/ https://www.linkedin.com/groups/122787 --- You received this message because you are subscribed to the Google Groups "Materials & Welding" group. To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com . To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/7c263a5d-1891-4532-8322-256e85082b91n%40googlegroups.com .

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. On Sat, Sep 26, 2020 at 11:50 PM hardik desai < hvdesai1284@gmail.com > wrote: 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   On Sun, Sep 27, 2020 at 11:09 AM George Dilintas < dilintas@gmail.com > wrote: You have to explain to the inspector that the physics of the metallurgy dont make any difference between plates ...

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 On Tuesday, 29 September, 2020, 04:32:23 pm GMT+7, GMT <gmt.lah@gmail.com> wrote: Dear, Q.Few Plates ...

Try ASME Sec-IIA   SA-530. Thanks & Regards J.Gerald Jayakumar On Sunday, 27 September, 2020, 06:22:25 pm GMT+7, Sourav Bohrays <souravbohrays@gmail.com> wrote: 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 On Sun, 27 Sep 2020, 11:52 am Sourav Bohrays, < souravbohrays@gmail.com > wrote: for this case firstly raise NCR than go for mechanical n chemical testing than recertify to specification nd edition you required. On Sun, 27 Sep 2020, 10:50 am hardik desai, < hvdesai1284@gmail.com > wrote: Hello Sir,                I have few Plates & Pipes which are in the open yard (Open to atmosphere condition) since last 10 years. Few Plates ...

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 On Sun, 27 Sep 2020, 11:52 am Sourav Bohrays, < souravbohrays@gmail.com > wrote: for this case firstly raise NCR than go for mechanical n chemical testing than recertify to specification nd edition you required. On Sun, 27 Sep 2020, 10:50 am hardik desai, < hvdesai1284@gmail.com > wrote: 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   On Sun, Sep 27, 2020 at 11:09 AM George Dilintas < dilin...

for this case firstly raise NCR than go for mechanical n chemical testing than recertify to specification nd edition you required. On Sun, 27 Sep 2020, 10:50 am hardik desai, < hvdesai1284@gmail.com > wrote: 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   On Sun, Sep 27, 2020 at 11:09 AM George Dilintas < dilintas@gmail.com > wrote: 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...

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   On Sun, Sep 27, 2020 at 11:09 AM George Dilintas < dilintas@gmail.com > wrote: 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 el...