We publish the link to an interesting article (Corrosion Process Inside Steel Fire Sprinkler Piping, by Bruce W. Christ, Ph.D) published on the Fire Protection Engineering website, based on a review of the engineering and scientific literature pertaining to biological and nonbiological metal corrosion processes.
The review indicates that several metal corrosion processes can occur inside pressurized, water-based, metal fire sprinkler piping. The scientific literature of electrochemistry is rich with examples of corrosion processes other than MIC that can deteriorate metals. For example, “oxygen corrosion” is a nonbiological process that can corrode certain metals. Moreover, “acid-oxygen corrosion” is a nonbiological process that can corrode certain metals even faster than oxygen corrosion.
The article discusses also nonbiological corrosion processes that are spontaneous under the conditions of temperature and pressure that prevail in pressurized, water-based, metal fire sprinkler piping systems: