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ASTM International - ASTM G62-87(1998)

Standard Test Methods for Holiday Detection in Pipeline Coatings

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Organization: ASTM International
Publication Date: 10 July 1998
Status: inactive
Page Count: 3
scope:

1.1 These test methods cover the apparatus and procedure for detecting holidays in pipeline type coatings.

1.2 Method A is designed to detect holidays such as pinholes and voids in thin-film coatings from 0.0254 to 0.254 mm (1 to 10 mils) in thickness using ordinary tap water and an applied voltage of less than 100 V d-c. It is effective on films up to 0.508 mm (20 mils) thickness if a wetting agent is used with the water. It should be noted, however, that this method will not detect thin spots in the coating, even those as thin as 0.635 mm (0.025 mils). This may be considered to be a nondestructive test because of the relatively low voltage.

1.3 Method B is designed to detect holidays such as pinholes and voids in pipeline coatings; but because of the higher applied voltages, it can also be used to detect thin spots in the coating. This method can be used on any thickness of pipeline coating and utilizes applied voltages between 900 and 20 000 V d-c. This method is considered destructive because the high voltages involved generally destroy the coating at thin spots.

1.4 The values stated in SI units to three significant decimals are to be regarded as the standard.

1.5 This standard does not purport to address all of the safety problems, 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.

Document History

October 1, 2023
Standard Test Methods for Holiday Detection of Coatings used to Protect Pipelines
5.1 Method A—Low voltage holiday detection is used to locate holidays and pinholes in thin-film coatings (up to 0.508?mm (20?mils) using a sponge wetted with tap water (and a wetting agent for...
August 15, 2022
Standard Test Methods for Holiday Detection in Pipeline Coatings
1.1 These test methods cover the apparatus and procedure for detecting holidays in pipeline type coatings. 1.2 Method A is designed to detect holidays such as pinholes and voids in thin-film...
July 1, 2014
Standard Test Methods for Holiday Detection in Pipeline Coatings
1.1 These test methods cover the apparatus and procedure for detecting holidays in pipeline type coatings. 1.2 Method A is designed to detect holidays such as pinholes and voids in thin-film...
June 1, 2013
Standard Test Methods for Holiday Detection in Pipeline Coatings
1.1 These test methods cover the apparatus and procedure for detecting holidays in pipeline type coatings. 1.2 Method A is designed to detect holidays such as pinholes and voids in thin-film...
July 1, 2007
Standard Test Methods for Holiday Detection in Pipeline Coatings
1.1 These test methods cover the apparatus and procedure for detecting holidays in pipeline type coatings. 1.2 Method A is designed to detect holidays such as pinholes and voids in thin-film coatings...
ASTM G62-87(1998)
July 10, 1998
Standard Test Methods for Holiday Detection in Pipeline Coatings
1.1 These test methods cover the apparatus and procedure for detecting holidays in pipeline type coatings. 1.2 Method A is designed to detect holidays such as pinholes and voids in thin-film...
September 25, 1987
Standard Test Methods for Holiday Detection in Pipeline Coatings (Withdrawn 2007)
1.1 These test methods cover the apparatus and procedure for detecting holidays in pipeline type coatings. 1.2 Method A is designed to detect holidays such as pinholes and voids in thin-film...
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