Case Study: Rehabilitation of a Preaction Fire Protection System affected by internal corrosion South-Tek Systems, LLC 2940 Orville Wright Way, Suite 600 Wilmington, NC 28405 Tel: (888) 526-6284 E-mail: info@southteksystems.com www.southteksystems.com Case Study: Rehabilitation of a Preaction Fire Protection System affected by internal corrosion 2 Executive Summary The purpose of this case study is to examine the effect that the use of 98%+ pure Supervisory Nitrogen has had on internal corrosion of a Preaction Fire Protection System in a mission-critical facility. This facility was commissioned in 2005 with a compressed air supervised, Preaction sprinkler system comprised of schedule 40 galvanized steel. Within 2

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