Flag ICP wear-metal concentrations against typical trending limits - a step change of >2× baseline is the classic CBM alert.
Formula
$$ \text{Alert} = \text{ppm} > 2\times \text{baseline or fleet 95}^\text{th} $$Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| $Fe$ | Iron - liners, pistons, gears | ppm | ICP-OES |
| $Cu$ | Copper - bronze bushings / cooler tubes | ppm | ICP-OES |
| $Pb$ | Lead - white-metal bearings | ppm | ICP-OES |
| $Si$ | Silicon - catalyst fines / dust | ppm | ICP-OES |
Sources
- ASTM D5185 - ICP-OES wear metals.
See also
Related wiki articles: