(B) The frequency of piping porosity in fillet weld shall not exceed one in each 4 in [100mm] of weld length and
the maximum diameter shall not exceed 3/32 in [2.5mm]. Exception : for fillet welds connecting stiffeners to web,
the sum of the diameters of piping porosity shall not exceed 3/8 in [10mm] in any linear inch of weld and shall not
exceed 3/4 in [20mm] in any 12 in [300mm] length of weld.