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SP0178-2007 <br /> Inside of Tank or <br /> Vessel Grind Smooth <br /> i <br /> DO <br /> Inside of Tank or <br /> Vessel <br /> Rough <br /> Pinhole <br /> Undercut <br /> Cillti)\ <br /> DON'T <br /> FIGURE A2 <br /> All joints shall be continuous full-penetration porosity-free welds. In tanks and vessels that require a 100%holiday-free lining,all <br /> welds must be smooth with no holes, high spots, lumps, or pockets. Grinding is required to eliminate sharp edges and high <br /> spots. Weld metal shall be used to fill in undercut or pits. <br /> Inside of Tank <br /> or Vessel <br /> 4:27.. <br /> Elk AM <br /> DO DON'T <br /> FIGURE A3 <br /> All weld spatter shall be removed. <br /> 6 NACE International <br /> 189 <br />