Understanding Heat Exchanger Reading 03- Part 2 of 2 The ARAMCO Std.

9 Fabrication
9.1 Shells
9.1.1 All longitudinal and circumferential welds of shells for other than kettletype
heat exchangers shall be finished flush with the inner contour for ease of
tube-bundle insertion and withdrawal. For kettle-type heat exchangers, this
requirement shall not apply to welds in the enlarged section if they are not in
the bottom quadrant of the shell.
Charlie Chong/ Fion Zhang
Bottom
Quadrant