This NACE standard test method was prepared as a guide for evaluating the application of polymeric coatings of 250 to 760 μm (1 O to 30 mils) to the internal surfaces of metallic tubular goods used in the oil and gas industry. It is not intended as a means of predicting the service life or service performance of these coatings. This test method is based on the current technology and experience of the petroleum production industry. NACE Standard TM03841 addresses holiday detection of internal tubular coatings of less than 250 μm ( 10 mils) dry-film thickness. This standard is intended for end users, manufacturers, applicators, corrosion engineers, and quality inspectors.

This NACE standard was originally prepared by Task Group T-1G-9 on Holiday Testing of Plastic Linings, a component of Unit Committee T-1 G on Protective Coatings, Elastomers, and other Nonmetallic Materials for Oilfield Use, and was reaffirmed by T-1 G in 1989 and 1994. It was reaffirmed in 2002 by Specific Technology Group (STG) 33 on Oil and Gas Production Nonmetallics and Wear Coatings (Metallics). This STG is comprised of representatives from the oil and gas industry including consumers, producers, and interested individuals. This standard is issued by NACE International under the auspices of STG 33.

1.1 This NACE standard provides a nondestructive test method for the detection of holidays in a nonconductive coating film that has been applied to the inner wall (bore) of oilfield tubular goods. The apparatus and the recommended procedure for conducting the test are described, as are methods of reporting the test data.

1 .2 The test method applies to coatings that have a specified dry-film thickness of 250 to 760 μm (10 to 30 mils). It is valid only for coatings that have not been in service or previously tested with a salt solution. When holiday testing is performed on coatings that have been in service or that have been previously tested for holidays with a salt solution.

Historical Document 2002