Problem

  • Soil Side Bottom (SSB) corrosion of a tank that is out of service and has a foundation consisting of an annular plate (chime), compacted sand fill, HDPE lining and concrete ring wall.

Details

  • Large oil terminal management client; double bottom tank with sand and liner
  • Bottom plates are removed, slots are cut and tank is readied for the Zerust installation
  • Perforated pipes are installed on the HDPE liner; ER probes are positioned on the base as well
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DETAILS CONT.

  • The Underside Drip Tube system of perforated PVC pipes is installed prior to sand fill
  • Once bottom plates are welded in place, Zerion FVS – B-15 inhibitor mixed with water is gravitiy fed into tank SSB space via the drip tubes
  • ER probe readings are taken periodically to verify/validate system performance