Metal Tank End Inspection

A multi-coat paint system with a zinc-rich primer protects the metal tank. Inspect and recoat chips in the paint as follows:

Level 1 Chips

• Level 1 chips are chips or abrasions in the coating that do not penetrate the black top coat.
• Level 1 chips do not expose the gray zinc-rich primer.
• Level 1 chips do not require resurfacing.

Level 2 Chips

• Level 2 chips are chips or abrasions that penetrate the black top coat.
• Recoat Level 2 chips or abrasions in order to prevent corrosion.
• The following 2 repair methods are recommended depending on whether the zinc-rich primer is still intact:

  Method 1

  1. Recoat the chip using commercial room temperature cure 2-component epoxy resin Loctite(R) P/N 14600 only if the chip has not penetrated the zinc-rich primer.
  2. This is the same material used to repair Level 2 tank wrap damage.
• The following procedure is recommended if the chip has penetrated the zinc-rich primer and exposed the bare metal:

  Method 2

  1. Sand the damaged area in order to remove any rust and to rough-up the surrounding coating.
  2. Clean the damaged area with commercial prepaint cleaning solvent Dupont(R) Prep Sol.
  3. Apply zinc-rich cold galvanizing primer LPS(R) P/N 00516 or equivalent.
  4. Coat the area after the primer has cured using room temperature cure 2-component epoxy resin Loctite(R) P/N 14600.

Dents

• Replace tanks with dents to the metal edges greater than 0.060" (1.52 mm) deep.

Gouges

• Replace tanks with sharp gouges penetrating the paint and the metal.