Re: [MW:4678] ER70S-3 for low temperature application

Better u Test ER70-S3 with GTAW separately at minus 46 c and u can be sure on this eventhough code does not call

On Sat, Apr 3, 2010 at 12:31 AM, Natarajan Devan <devan1961@gmail.com> wrote:

yes you can apply PQR.

Once proven record is available. i think your PQR is LTC ( A333)material.

regards

N.Devan

 

On 4/1/10, Muhammed Ibrahim <ibratech@gmail.com> wrote:

Hi members,

 

Please provide a suggestion for the following query.

 

I have qualified a PQR for GTAW+SMAW with ER70S-3 & E7018-1. The PQR is impact tested at - 46 deg C at root(GTAW) and filling (SMAW) and passed (Min. 50J energy obtained).

 

As per ASME Sec.II part C, E7018-1 will support up to - 46 Deg C, but ER70S-3 will support up to - 20 Deg.C only.

 

Since I have proven the toughness through PQR, can I use this PQR for job with impact test requirement of - 46 Deg C, even ER70S-3 does not support for this temperature as per Sec.IIC?.

 
Thanks & Regards
Muhammed Ibrahim PK
 

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Natarajan.Devan
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Al Furat Petroleum Co-Syria
Syria Shell Petroleum Development
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