NACE TM21420-2018

NEW NACE Standard Test Method for 2018! This NACE International test method describes a reliable methodology for determining the peel strength of polyolefin-based multilayer pipeline coating systems, generally for coating thickness less than 12 mm (0.47 in). This standard provides a method to measure the peel strength of polyolefin-based multilayer coating systems, such as 2-layer polyethylene coating [2LPE], 3-layer polyethylene [3LPE], 3-layer polypropylene [3LPP], and heat shrink sleeve[HSS] field joint coating.

It provides essential information on the quality of the applied coating. This is particularly important for field-applied coatings, of which the application process is significantly impacted by the environmental conditions and the skill set of the field applicators. This test method is intended for use by pipeline operating companies, pipeline owners, pipeline contractors, pipeline inspection services companies, and pipeline coating mills.