M-Coat

Microbiologically Influenced Corrosion (MIC) is more complicated than other types of corrosion because of its rapid growth rate and reoccurrence if left untreated. In the past it was thought that MIC was remedied by replacing the infected pipe… but this is not the case.

MIC is a corrosion process influenced by microorganisms and is a major cause of tuberculation, pitting and pipe failure in fire sprinkler systems, including carbon steel, copper and galvanized pipe systems.

Fire sprinkler systems provide a favorable environment for the growth and development of bacteria resulting in MIC failures, as recognized by members of the AFSA, NFPA, NFSA, NACE, sprinkler manufacturers, end users and fire protection service/mechanical contractors working within the industry.

MIC-related bacteria include aerobes (i.e., thrive in oxygen) and anaerobes (inhibited or die when exposed to oxygen). Aerobic microorganisms and their secretions on wetted pipe surfaces lead to the formation of bio-films, which frequently become embedded with iron, scale, oil, dirt, and other debris. This bio-film adheres to metal surfaces and forms a mass around bacterial deposits creating differential oxygen cell corrosion and other types of corrosion.

Allied Tube & Conduit, a brand of Atkore International, has developed M-COAT, the latest technological advancement for fire sprinkler pipe. This new coating is FBC™ System Compatible for use in hybrid fire sprinkler systems that combine M-COAT steel pipe with BlazeMaster® CPVC pipe and fittings. It is also FM Approved, representing a highly engineered pipe suited for the broadest range of fire sprinkler installations.
 
M-COAT meets the standards established by The Lubrizol Corporation for compatibility for use with BlazeMaster® pipes and fittings. The FBC™ System Compatible Program is designed to test and monitor ancillary products on an ongoing basis to ensure chemical compatibility with FlowGuard Gold®, BlazeMaster® and Corzan® CPVC piping systems. All designated products qualify for the program by undergoing rigorous testing, which assures the product is acceptable for use with the specified CPVC pipe manufactured by Lubrizol’s licensees.