scope:

General

This standard presents guidelines for establishing minimum requirements for material selection, surface preparation, proper application, inspection, and to ensure long-term coating performance of liquid-epoxy coatings applied to external pipe surfaces for coating repair, rehabilitation, or field joints.

The function of such coatings is to prevent corrosion when used in conjunction with cathodic protection.

This standard provides guidelines for proper surface preparation and coating application and identifies inspection and repair techniques to ensure long-term coating performance.

The material for external coating shall be approved by the owner. Once a coating formulation is accepted by the owner, it shall not be changed unless the owner is notified in writing.

The owner shall ensure that work is conducted in accordance with this standard and that quality is assured by qualified personnel such as NACE Coating Inspectors or equivalent (trained coating inspectors). The inspector shall have an excellent knowledge of the application procedures and techniques generally used for high-performance coatings whether applied by brush, roller, or spray. The coating inspector should know the characteristics of air- and airless-spray plural components, and shall be familiar with the procedures used to apply coatings properly with such equipment.

The coating inspector (company representative) shall have access at all times to the work performed, in accordance with the company specifications, and shall have the right to inspect such work and all material furnished by the applicator.

For surface preparation and coating applications the applicator shall use coating personnel, equipment, and procedures that have been prequalified by the manufacturer and approved by the owner.

Users of this standard shall be responsible for specifying applicable safety, health, and environmental practices to ensure compliance with all applicable regulations, including compliance with insurance requirements and directives.