[MW:13623] RE: 13610] Applicability of Impact testing for Non pressure parts welded on non pressure parts (inside the vessel)

Hi

Impact  test is required for materials such as shell, head, flanges and fittings, stiffener plate or any attachment, if welded to pressure retaining parts, whether internal or external, used for structural integrity, shall be impact tested.

In your case, if SP1 is used in design for structural integrity, then it requires to be impact tested at the same governing MDMT. Please check with your designer. But however, SP2 does not require impact test, since, it is not welded to pressure retaining part. (ref UCS.66)

BR

M.Vijayan

 

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Aly
Sent: Saturday, February 04, 2012 9:05 AM
To: materials-welding@googlegroups.com
Subject: [MW:13610] Applicability of Impact testing for Non pressure parts welded on non pressure parts (inside the vessel)

 

Dear Expert,   Kindly advise on following;   Suppose I have a vessel with MDMT minus 48deg C, we have support plate (SP1) (inside the vessel) welded with vessels, on which I am going to weld another support plate (Sp2),   My question is whether this (SP1 & SP2) required to have impact tested to minus 46deg C or only SP1?   Similarly would saddle supports of this vessel require matl with impact testing.   Thank you in advance..   Ali Mhaskar UAE

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