Fire sprinkler systems are expected to perform reliably over the design life of the protected facilities. Several failures have led to two large recalls of sprinkler heads and revisions to industry standards. In this paper we are presenting case histories of four different fire protection systems where corrosion resulted in premature discharge/leakage causing significant property damage or facilities downtime. One case involves tuberculation of galvanized piping in a nominally dry system. Two cases involve dealloying (dezincification) corrosion of brass sprinkler heads. Another case involves microbiologically induced corrosion (MIC) corrosion of flexible, corrugated, stainless steel feed tubes.
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