history
The first known application of corrosion protection in the United States occurred in 1960 on the exterior surfaces of small-diameter pipes used for gas distribution. Since then, applications have expanded to larger pipe sizes as internal and external coatings for gas, oil, water and wastewater applications. Customization applied to accessory fittings, pumps, valves, couplers, flow meters and various other parameters is also possible.
Materials are applied via electrostatic spray, air spray (Hocking) or fluid bed, usually in a controlled plant environment. However, equipment is available that allows internal or external application of pipe joints in the field. The first edition of the standard was approved in 1979; the 1985 revision incorporated changes to reflect fusion bonded epoxy technology, which was current at the time. In the 1985 revision, the Fhe primer provision was removed; 2001 Revisions in 2007 and 2007 incorporated the latest technology and requirements at the time. The Ulis version was approved on January 24, 2015.
In May 1985, the U.S. Environmental Protection Agency (USEPA) entered into a cooperative agreement with a consortium led by NSF International (NSF) to develop voluntary third-party consensus standards and certification programs for direct and indirect drinking water additives. Other members of the original consortium include the Water Research Foundation (formerly the Australian Water Foundation) and the National Conference of Health and Environmental Managers.
The American Water Works Association (AWWA) and the Association of State Drinking Water Administrators (ASDWA) later joined. In the United States, authority to regulate drinking water use or products that come into contact with drinking water rests with the states, and local agencies may choose to impose requirements that are more stringent than national requirements.
