Page 643 - Corrosion Engineering Principles and Practice
P. 643
602 C h a p t e r 1 4 P r o t e c t i v e C o a t i n g s 603
SW 14 8 6 11 15 18
FW 17 9 8 12 17 20
PW — 12 10 15 20 24
DFT 4.1 2.0 1.5 2.5 2.3 3.3
Number of Coats 2 2 2 3 2 3
Surface Preparation Blast Blast Blast Blast Blast Blast Estimated Service Life for Practical Maintenance Coating Systems for Immersion Service (in Years before First
Coating Systems for Immersion Service (primer/midcoat/topcoat) Coal tar epoxy Epoxy/epoxy Epoxy/epoxy Epoxy/epoxy/epoxy Zinc metallizing/epoxy Zinc metallizing/epoxy/epoxy All estimates (in years) are for the “Practical” life of the system. Practical life is considered to be the time until 5 to 10% coa
Type Epoxy Epoxy Epoxy Epoxy Metallizing Metallizing Notes: 1. Service Life Estimates: 3. DFT is the dry film thickness in mm. 4. Service Life Environment Definitions: 5. Typical Maintenance Painting Sequence: Maintenance Repaint occurs at “P” Life + 33% (“P” × 1.33) TABLE 14.3 Maintenance Paintin
