Sacrificial anodes for cathodic protection for production vessels, storage vessels and other steel structures

A vessel and vessel corrosion protection apparatus, comprising:

• a) a vessel having a vessel wall surrounding a vessel interior;
• b) a wall opening through the vessel wall;
• c) a section of pipe connected to the vessel wall at the wall opening, said section of pipe having inner and outer end portions and a pipe section inner surface surrounding a pipe section bore;
• d) an anode, including a cylindrical part, the anode mounted to said pipe section and occupying all or part of said pipe section bore;
• e) the anode having an inner end portion that extends into said vessel interior;
• f) the anode having an outer end portion that occupies the pipe section bore in between said inner and outer pipe end portions;
• and
• g) wherein the anode is formed of an anodic material that includes an outer end portion having a plurality of radially extending projections that are cast with the cylindrical part of the anodic material and that are shaped to engage the pipe section inner surface.

A vessel corrosion protection apparatus for a vessel having a vessel wall surrounding a vessel interior, a wall opening through the vessel wall, a section of pipe connected to the vessel wall at the wall opening, said section of pipe having inner and outer end portions and a pipe section inner surface surrounding a pipe section bore, the apparatus comprising:

• a) an anode of anodic material mountable to said pipe section and occupying all or part of said pipe section bore when so mounted;
• b) the anode having an inner end portion that extends into said vessel interior when mounted to said pipe section;
• c) the anode having an outer end portion that occupies the pipe section bore in between said inner and outer pipe end portions when mounted to said pipe section;
• and
• d) wherein said anode outer end portion includes a plurality of radially extending projections that are part of said anodic material and that engage the pipe section inner surface when the anode outer end portion is mounted to said pipe section bore.