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AWWA C213 Fusion-Bonded Epoxy Coatings and Linings

The AWWA C213 standard serves as a comprehensive guide for the application of fusion-bonded epoxy (FBE) coatings and linings on steel water pipes and fittings, offering detailed specifications to ensure effective corrosion protection and the preservation of water quality. Here's a more detailed description:

1. Materials: AWWA C213 outlines requirements for the materials used in fusion-bonded epoxy coatings and linings, including the composition of the epoxy resin, curing agents, and additives. These materials are chosen for their compatibility with steel substrates, resistance to corrosion, and ability to withstand the environmental conditions encountered in water distribution systems.
2. Application Methods: The standard specifies approved methods for applying fusion-bonded epoxy coatings and linings to steel surfaces, such as electrostatic spray, fluidized bed, or powder flocking. Proper application methods are essential for achieving uniform coverage, optimal adhesion, and the desired coating thickness.
3. Thickness Requirements: AWWA C213 defines minimum and maximum thickness requirements for fusion-bonded epoxy coatings and linings, ensuring sufficient protection against corrosion while avoiding excessive buildup that could lead to handling difficulties or reduced flexibility. These thickness requirements are tailored to the specific operating conditions and service life expectations of the water distribution system.
4. Surface Preparation: The standard includes guidelines for surface preparation prior to applying fusion-bonded epoxy coatings and linings, such as cleaning, degreasing, and abrasive blasting to remove rust, scale, and other contaminants. Proper surface preparation is crucial for promoting adhesion and maximizing the effectiveness and longevity of the coating system.
5. Quality Control Measures: AWWA C213 outlines quality control measures to ensure the integrity and reliability of fusion-bonded epoxy coatings and linings, including requirements for batch testing of coating materials, inspection of applied coatings for defects or irregularities, and adherence to specified performance criteria. These measures help verify compliance with the standard's requirements and ensure consistent coating performance.
6. Field Repair: The standard may include provisions for field repair of fusion-bonded epoxy coatings and linings, outlining procedures for addressing damage or defects that occur after initial application. Proper repair methods help maintain the integrity of the coating system and extend the service life of steel water pipes and fittings.
7. Health and Safety: AWWA C213 emphasizes the importance of health and safety considerations during the application of fusion-bonded epoxy coatings and linings, including guidelines for handling, storage, and disposal of coating materials, as well as measures to protect workers from potential hazards associated with coating application.

Overall, adherence to AWWA C213 ensures the effective application of fusion-bonded epoxy coatings and linings on steel water pipes and fittings, providing robust corrosion protection and preserving water quality in water distribution systems.