Maximum Plate Thickness Allowed per API 650
Maximum Plate Thickness Allowed per API 650
(OP)
Section 2 of API-650 states the maximum plate thickness allowable for each different material and grade. For most materials it is allowed to use thicker plate for inserts, however for A573-70 (2.2.2(g)) it states that 1.5 inches is the maximum period. I was wondering if anyone knows why and also if anyone knows any way of getting around this in order to use a thickened insert. Thanks.





RE: Maximum Plate Thickness Allowed per API 650
Steve Braune
Tank Industry Consultants
www.tankindustry.com
RE: Maximum Plate Thickness Allowed per API 650
RE: Maximum Plate Thickness Allowed per API 650
RE: Maximum Plate Thickness Allowed per API 650
I think your coworker is wrong about the thickness limits. The general limits apply to all plates whether a shell plate, insert plate, thickened insert plate, etc. On a few grades of material, the Standard allows thicker plates for inserts and flanges.
Regarding dual certs, once a material grade is selected, ALL of the rules are applied based on the grade selected as basis of design, fab and erect. It was not inteneded to mix-and-match requirements based on both material grades.
Steve Braune
Tank Industry Consultants
www.tankindustry.com
RE: Maximum Plate Thickness Allowed per API 650
RE: Maximum Plate Thickness Allowed per API 650