1. Scope

1.1 These test methods cover accelerated procedures for simultaneously determining comparative characteristics of insulating coating systems applied to steel pipe exterior for the purpose of preventing or mitigating corrosion that may occur in underground service where the pipe will be in contact with inland soils and may or may not receive cathodic protection. They are intended for use with samples of coated pipe taken from commercial production and are applicable to such samples when the coating is characterized by function as an electrical barrier.

1.2 This test method is intended for testing coatings submerged or immersed in the test solution at room temperature. When it is impractical to submerge or immerse the test specimen, Test Method G95 may be considered where the test cell is cemented to the surface of the coated pipe specimen. If higher temperatures are required, see Test Method G42. If a specific test method is required with no options, see Test Method G80.

1.3 The values stated in SI units to 3 significant decimals are to be regarded as the standard. The values given 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 and health practices and determine the applicability of regulatory limitations prior to use.

2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

G12 Test Method for Nondestructive Measurement of Film Thickness of Pipeline Coatings on Steel

G42 Test Method for Cathodic Disbonding of Pipeline Coatings Subjected to Elevated Temperatures

G80 Test Method for Specific Cathodic Disbonding of Pipeline Coatings

G95 Test Method for Cathodic Disbondment Test of Pipeline Coatings (Attached Cell Method)

Keywords

ambient bonding; cathodic disbonding; pipeline coatings; Accelerated aging/testing--pipeline coatings; Breaks; Conductance and conductivity (electrical); Corrosion--electrodeposited coatings; Corrosion--pipeline coatings; Disbonding--cathodic; Electrical measurements--coating applications; Electrical stress; Holiday detection; Impressed current system; Instrumental measurement--paints/related coatings/materials; Insulating coating systems; Magnesium anodes; Pipeline coatings; Underground environments; Visual examination--pipeline coatings;

ICS Code

ICS Number Code 23.040.99 (Other pipeline components)

DOI: 10.1520/G0008-96

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