PiggyBack™ Tank Bottom Anode System (PBT)

PiggyBack™ Tank Bottom Anode System (PBT)

1. CerAnode’s PBT PiggyBack™ Tank Bottom system is a continuous MMO mixed-metal-oxide linear anode solution engineered specifically for soil-side protection of Above-Ground Storage Tank (AST) bottoms.
2. The system comes pre-assembled in concentric loops, factory-connected, and delivered ready-to-lay, eliminating field splices and simplifying installation.

• Designed for use under new tanks, during tank-bottom replacement, or in “double-bottom” or secondary containment applications, the PBT accommodates even tight clearance conditions
  1. Design & Materials:
     1. Continuous MMO Anode Wire: Utilizes durable MMO-coated titanium wire for consistent, long-lasting ICCP performance.
     2. Concentric Loop Configuration: Factory-arranged in multiple concentric loops (arcs) to follow tank-bottom symmetry and optimize current distribution.
     3. Redundant Leads: Each loop includes individual redundant header leads to ensure reliability and simplify troubleshooting.
  2. Performance & Efficiency:
     1. Optimized Current Distribution: The loop geometry and spacing are computer-designed to provide near-isometric current across the tank bottom with minimal attenuation.
     2. Low Groundbed Resistance: High total anode wire length and properly designed loops reduce groundbed resistance, improving cathodic protection (CP) efficiency.
     3. Power-Efficient: Engineered for lower rectifier load and better power utilization compared to discrete anode systems.

• Durability & Environment:
  1. Long Design Life: Custom-designed for a 50-year service life, minimizing need for replacement.
  2. Environmentally Safe Components: Materials used are inert and benign; the system can include a “green” coke-sock backfill option if needed.
  3. Minimal Interference Risk: Close-proximity design reduces stray current effects on adjacent structures.

1. Installation & Maintenance:
   1. Factory Ready: Arrives onsite with full factory connections—no field splices required.
   2. Easy Layout: Concentric loops are laid directly under the tank footprint.

Optional Mesh Protection: Available with a plastic mesh sleeve to prevent shorts when wire is buried very close to the tank bottom