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Example of coating system ranking

Epoxy based specifications

Specifications

Coat

Resin

Inhibitor

Thickness/microns

Primer

Epoxy

Zinc Rich

75

Barrier (1)

Epoxy

MIO

125

Barrier (2)

Epoxy

MIO

125

Finish

Polyurethane

50

The ranking value for this specification would be:

Primer

Barrier (1)

Finish

Epoxy = 2

Epoxy = 2

Polyurethane = 3

Zinc Rich = 3

MIO = 2

Thickness = 2

Thickness = 3

Thickness = 3

Sub total = 8

Sub total = 7

Sub total = 5

Giving an overall ranking of 20

Note that in this specification although 2 barriers are specified it is treated as a single coat of 250 microns to avoid double counting the resin and MIO.

This document was revised on 17 November 2000 by Graham Gedge