ASTM G96-90(2018)
Standard Guide for Online Monitoring of Corrosion in Plant Equipment (Electrical and Electrochemical Methods)

Standard No.

ASTM G96-90(2018)

Release Date

2018

Published By

American Society for Testing and Materials (ASTM)

Latest

ASTM G96-90(2018)

Scope

1.1 This guide covers the procedure for conducting online corrosion monitoring of metals in plant equipment under operating conditions by the use of electrical or electrochemical methods. Within the limitations described, these test methods can be used to determine cumulative metal loss or instantaneous corrosion rate, intermittently or on a continuous basis, without removal of the monitoring probes from the plant. 1.2 The following test methods are included: Test Method A for electrical resistance, and Test Method B for polarization resistance. 1.2.1 Test Method A provides information on cumulative metal loss, and corrosion rate is inferred. This test method responds to the remaining metal thickness except as described in Section 5. 1.2.2 Test Method B is based on electrochemical measurements for determination of instantaneous corrosion rate but may require calibration with other techniques to obtain true corrosion rates. Its primary value is the rapid detection of changes in the corrosion rate that may be indicative of undesirable changes in the process environment. 1.3 The values stated in SI units are to be considered standard. The values in parentheses are for information only. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Specific precautionary statements are given in 5.6. 1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

ASTM G96-90(2018) Referenced Document

• ASTM D1125 Standard Test Methods for Electrical Conductivity and Resistivity of Water
• ASTM G1 Standard Practice for Preparing, Cleaning, and Evaluating Corrosion Test Specimens
• ASTM G102 Standard Practice for Calculation of Corrosion Rates and Related Information from Electrochemical Measurements
• ASTM G15 Standard Terminology Relating to Corrosion and Corrosion Testing
• ASTM G3 Standard Practice for Conventions Applicable to Electrochemical Measurements in Corrosion Testing
• ASTM G4 Standard Guide for Conducting Corrosion Coupon Tests in Field Applications
• ASTM G59 Standard Test Method for Conducting Potentiodynamic Polarization Resistance Measurements

ASTM G96-90(2018) history

• 2018 ASTM G96-90(2018) Standard Guide for Online Monitoring of Corrosion in Plant Equipment (Electrical and Electrochemical Methods)
• 1990 ASTM G96-90(2013) Standard Guide for Online Monitoring of Corrosion in Plant Equipment (Electrical and Electrochemical Methods)
• 1990 ASTM G96-90(2008) Standard Guide for Online Monitoring of Corrosion in Plant Equipment (Electrical and Electrochemical Methods)
• 1990 ASTM G96-90(2001)e1 Standard Guide for On-Line Monitoring of Corrosion in Plant Equipment (Electrical and Electrochemical Methods)
• 1990 ASTM G96-90(1996)E1 Standard Guide for On-Line Monitoring of Corrosion in Plant Equipment (Electrical and Electrochemical Methods)