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ASTM-G189:2007 Edition

ASTM-G189:2007 Edition

$44.96

G189-07 Standard Guide for Laboratory Simulation of Corrosion Under Insulation

Published By Publication Date Number of Pages
ASTM 2007 11
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1.1 This guide covers the simulation of corrosion under insulation (CUI), including both general and localized attack, on insulated specimens cut from pipe sections exposed to a corrosive environment usually at elevated temperature. It describes a CUI exposure apparatus (hereinafter referred to as a CUI-Cell), preparation of specimens, simulation procedures for isothermal or cyclic temperature, or both, and wet/dry conditions, which are parameters that need to be monitored during the simulation and the classification of simulation type.

1.2 The application of this guide is broad and can incorporate a range of materials, environments and conditions that are beyond the scope of a single test method. The apparatus and procedures contained herein are principally directed at establishing acceptable procedures for CUI simulation for the purposes of evaluating the corrosivity of CUI environments on carbon and low alloy pipe steels, and may possibly be applicable to other materials as well. However, the same or similar procedures can also be utilized for the evaluation of (1) CUI on other metals or alloys, (2) anti-corrosive treatments on metal surfaces, and (3) the potential contribution of thermal insulation and its constituents on CUI. The only requirements are that they can be machined, formed or incorporated into the CUI-Cell pipe configuration as described herein.

1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

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 and health practices and determine the applicability of regulatory limitations prior to use.

PDF Catalog

PDF Pages PDF Title
1 Scope
Referenced Documents
Terminology
2 Summary of Guide
Significance and Use
FIG. 1
3 Apparatus
4 FIG. 2
FIG. 3
5 Specimens
FIG. 4
6 FIG. 5
7 Environment
Simulation of CUI Using Mass Loss and Localized Corrosion
FIG. 6
8 TABLE 1
9 Simulation of CUI Using Potentiodynamic Polarization Resistance
Reporting
Keywords
10 X1. DATA FROM CUI-CELL
X1.1
X1.2
FIG. X1.1
11 FIG. X1.2

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