This is primarily accomplished through the use of corrosion coupons, which are installed in a system and removed after a period of time (typically 30, 60 or 90 days), to determine general corrosion rates.

Another method of measuring rates is with a linear polarization resistance (LPR) monitor which can be a useful tool in providing instantaneous information for specific applications. Corrosion monitoring data supplies information which establishes a baseline for tracking

performance compared with industry standards. HPE follows the guidelines set forth by AWT standards.