D102-97: AWWA Standard for Coating Steel Water-Storage Tanks

This standard covers coating systems for coating and recoating the inside and outside surfaces of steel tanks used for potable water storage in water supply service. Coating systems for new bolted steel tanks are not covered by this standard (see ANSI/AWWA D103). Section 1 covers scope, purpose and application. Sections 2 and 3 list references and definitions. Section 4 discusses requirements including data to be furnished by the constructor, outside coating systems, inside coating systems, coating materials, surface preparation, application, and safety precautions. Section 5 includes inspection and testing and also the first anniversary inspection. Section 6 covers delivery including marking, shipping and affidavit of compliance. Appendices include a bibliography, selection and use of coating systems, and environmental concerns. A listing of the major revisions in this edition of ANSI/AWWA D102-97 follows. All coating systems included in this standard have been selected to eliminate products that contain red-lead or zinc-chromate. A new alphanumeric identification system has been used in this standard for both inside and outside coating systems to distinguish the coating systems in this revised standard from those in the previous edition. In this standard, the interior and exterior systems are referred to as coating systems instead of painting systems. In addition, some of the previous systems have been rearranged so that similar coating systems are adjacent to each other. Several changes have been made to the inside and outside coating systems. There are many coating systems that are suitable for coating the interior and exterior of tanks, but this standard includes only those systems that are widely used. Outside Coating Systems No.5 (epoxy-urethane) and No. 6 (zinc-rich epoxy-urethane) have been included in this standard. Former Inside Paint Systems No. 2 (five-coat vinyl) and No. 3 (chlorinated rubber) and former Outside Paint System No. 5 (chlorinated rubber-alkyd) have not been included in this standard. Former Inside Paint System No. 7 (metallic-sprayed zinc coating) has not been included in this standard. AWWA is developing a new standard to include this and other similar systems. Former Inside Paint System No. 1 (two- or three-coat epoxy) has been changed to only a two-coat system and identified as Inside Coating System No. 1. Inside Coating System No. 2, three-coat two-component epoxy, and No. 3, zinc-rich primer with intermediate and finish coats of two-component epoxy, have been included in this standard.