Understanding API ICP653 Reading 7-Worksheet-04 Part1

10.3.3.2 Shell stiffeners, wind girders and top angles may be left attached to
shell or cut at attachment welds. If temporary attachments are removed, grind
area smooth.
10.3.3.3 Cut shell from bottom plate along line B-B (see Fig. 10-1). The
existing shell-to-bottom weld connection shall not be reused unless the
entire bottom is to be salvaged intact.
10.3.4 Roofs
10.3.4.1 Cut roof by lapweld deseaming or alongside (a minimum of 2" from)
the remaining welds.
10.3.4.2 Roof structure
Remove bolts or deseaming at structural welds.
Charlie Chong/ Fion Zhang