Revised in 2019! This updated NACE International standard practice provides the most current technology and industry practices for material requirements and the use of tape coatings for external mainline coating, coating repair, coating rehabilitation, and coating weld joints on buried metal pipelines. The standard includes two tables that describe the prevailing tape and coating materials (Table 1) and accessories (Table 2), and seven tables (Tables 3-9) that list system material requirements for various types of tape applications. For quick reference, applicable test methods are included in the material requirements tables. The standard is applicable to underground metal pipelines in the oil and gas gathering, distribution, and transmission industries, as well as water and wastewater pipelines. This standard is intended for use by corrosion control personnel, design engineers, project managers, purchasing personnel, and construction engineers and managers.
Key words: adhesion test, bitumen-based tapes, bituminous tape, blast-cleaned, bond test, cathodic disbondment, cathodic protection, cigarette wrap, circumferential wrap, coal tar tape, coating materials, coating systems, cohesive separation, coil-splice welds, cold applied, cutback area, dielectric strength, elongation, field joint area, field welds, flammability, holiday inspection, hot applied, impact resistance, inner layer tape, laminate polymeric tape, liquid adhesive, longitudinal welds, maximum service temperature, mesh-backed polymeric tape, multilayer polymeric tape system, primer, pull tension, rockshield, single-layer tape system, spiral welds, spiral wrap, substrate, surface preparation, tensile strength, TG 251, STG 03, viscoelastic coating, viscoelastic tape, water/wastewater pipelines, water vapor transmission rate, wrap direction.