API 653 Data Sheets-Dimensions Group 1

Linings- Typically anchor profile of steel surface required for the installation of a tank bottom lining   652:  7.5

Welds- Maximum undercut of a vertical weld & nozzle weld   650:  8.5.2.b

Welds- Maximum undercut of a horizontal weld 650:  8.5.2.b

Welds- Maximum diameter of a surface porosity cluster   650:  8.5.2.c

Weld Qualification- Max allowed discontinuity in a bend test  IX:  QW-163

Nameplates- Minimum size of name plate letters   650:  10.1.1 &  653:  13.1.1.1

Bottoms- Minimum external projection of bottom plate on an existing tank (from toe of shell-to-bottom FW)  653:  4.4.5.7

Reconstruction- Max amount of peaking allowed in vertical welds  653:  10.5.4

Shell Calcs- When calculating tmin for shell LTA, minimum distance away from a weld where "E" is always 1.0   653:  4.3.3.1 (definitions)

Shell Patch- Minimum overlap of shell lap-patch used to cover a hole (edge of hole to edge of patch)   653:  9.3.2.3

NDE- When performing a PT examination, minimum distance to clean beyond the area to be examined     V: T-642.b

NDE- When performing a MT examination, minimum distance to clean beyond the area to be examined   V:  T-741.1.b

Reconstruction- Maximum amount of banding allowed in a horizontal weld   653:  10.5.5

Bottoms- Minimum overlap required for single-welded lap joints   650:  5.1.3.5

Bottoms- Minimum external projection of bottom plate on a new tank   650:  5.4.2

Vacuum Box- Minimum overlap of previously test surfaces when using a vacuum box650:  8.6.5

Bottom Patch- Minimum overlap of bottom lap-patch fillet weld to the nearest existing bottom weld   653:  Fig. 9.13

Bottom Patch- Minimum distance bottom lap-patch fillet weld to the nearest existing bottom weld   653:  Fig. 9.13

Shell Patch- Minimum radius of a shell lap-patch   653:  9.3.1.4

Reconstruction- If reusing bottom plates, minimum distance to cut from existing bottom welds (if plates are not deseamed) 653:  10.3.2.1