ASTM-G96 2008

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G96-90(2008) Standard Guide for Online Monitoring of Corrosion in Plant Equipment (Electrical and Electrochemical Methods)

Published By	Publication Date	Number of Pages
ASTM	2008	10

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Description

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 .

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.

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 and health practices and determine the applicability of regulatory limitations prior to use. Specific precautionary statements are given in 5.6.

PDF Catalog

PDF Pages	PDF Title
1	Scope Referenced Documents Terminology Summary of Guide
2	FIG. 1
3	Significance and Use FIG. 2
4	Limitations and Interferences Apparatus
5	Probe Preparation Probe Installation Procedure Interpretation of Results Limitations and Interferences
6	FIG. 3
7	Apparatus Probe Preparation Probe Installation Procedure Interpretation of Results
8	Keywords X1. DERIVATIONS AND EXAMPLES OF OPERATING LIMITS GIVEN ON X1.1 Corrosion Rate and Solution Resistance Calculation TABLE X1.1
9	REFERENCES

Additional information

Standard Title	G96-90(2008) Standard Guide for Online Monitoring of Corrosion in Plant Equipment (Electrical and Electrochemical Methods)
Published Code	ASTM
Publication Date	2008
Pages Count	10

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ASTM-G96 2008

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