Materials Performance Magazine • March 2023 • AMPP Publishes New and Revised Standards

Standards Committee (SC) 11, Electric Power, has recently published AMPP SP21460-2022, Corrosion Control of Pilings in Non-Marine Applications.

This document discusses the issues to be taken into consideration with respect to accounting for corrosion on steel piles in non-marine applications. The rate of corrosion, design life, and methods of corrosion control are discussed in a manner to provide the reader with guidance as to how to proceed with determining these factors. This standard is applicable to pipe piles, sheet piles, H piles, and other steel piles.

The document project manager (DPM) was Darby Howard. The standard is available in the AMPP Store at store.ampp.org

SC 03, External Coatings—Buried and Immersed, announces the publication of NACE TM0174-2022, Laboratory Test Methods for the Evaluation of Protective Coatings and Lining Materials on Metallic Substrates in Immersion Service.

This standard provides two separate test methods for evaluating protective coatings on any metallic substrate, such as steel, copper, aluminum, etc., so that the factors of both chemical resistance and permeability can be considered. The results obtained should give a good indication of what would happen on exposure to similar service conditions.

Protective coatings, as referred to in this standard, may be applied in liquid form (solution, dispersion, etc.); or dry form (powders); using spray, dip, roller, brush, trowel, or other appropriate application techniques.

The DPM was Amal Al-Borno. The standard is available in the AMPP Store at store.ampp.org.

SC 17, Rail and Land Transportation, announces the reaffirmation of NACE TR43114-2022, Nonvisible Contaminants on Railcar Surfaces.

The purpose of this technical committee report is to increase railcar industry awareness of nonvisible surface contamination (NVSC), its impact, and its removal before coating application to the railcar. For the purpose of this report, NVSC is defined as any substance that may affect coating performance and does not leave a visible deposit on a bare or previously coated carbon steel surface. This report discusses how NVSC may have a harmful effect on the performance and lifespan of a coating system. This report also identifies types of NVSC and methods for its removal.

SC 17 also announces the revision of NACE SP0302-2022, Selection and Application of a Coating System to Interior Surfaces of New and Used Rail Tank Cars in Molten Sulfur Service.

This standard practice addresses the need for quality application of coatings to the interior surfaces of steel rail tank cars transporting molten sulfur. It covers surface preparation; selection and application of coating materials; inspection of the completed coating system; and testing using adequate, readily available instruments. This standard provides guidelines to the builder, owner, shipper, and all those involved in the production and use of rail tank cars intended for the transport of molten sulfur.

The DPM for both of these projects was Tim Schaffer. The standards are available in the AMPP Store at store.ampp.org.

SC 15, Pipelines and Tanks, has revised NACE SP0575-2022, Internal Cathodic Protection (CP) Systems in Oil-Treating Vessels. This standard provides a general guide for the application of effective CP to all types of oil-treating vessels containing a free water phase (the electrolyte). It is intended to be used by facility owners, contractors, inspectors, vessels equipment specialists, CP system designers, manufacturers, and others concerned with corrosion mitigation by using CP systems. The procedures in this standard may best be applied under the direction of a corrosion engineer and by persons with experience and knowledge of the design, installation, operation, maintenance, and control of corrosion protection in the oil-treating vessels containing the electrolyte.

Coatings and materials are discussed in this document in conjunction with the CP design, as the coating is a major factor when designing a CP system.

The DPM was Jeff Didas. The revised standard is available in the AMPP Store at store.ampp.org.