In-Place Pipe Lining of Pre-Action Fire Suppression System at Fort McPherson, GA

摘要

A pre-action fire suppression system was installed in a portion of the U.S. Army Reserve Component Headquarters at Fort McPherson, GA, when the structure was constructed in 1995. This system, which is normally kept at a standard internal air pressure using air compressors in the basement electrical- mechanical room, is designed to remain dry, and have water in it only in the event of a fire. The Pre-action Fire Suppression System has developed pinhole leaks due to what appears to be galvanic corrosion. The U.S. Army Corps of Engineers Engineer Research and Development Center, Construction Engineering Research Laboratory proposed installing an in-place epoxy lining of the system using a process developed by American Pipe Lining, Inc. The in-place epoxy lining was installed in the pre-action system and the effectiveness of the coating process documented. The work included restoration and lining of all interior pre-action piping mains, risers, branch laterals, and service piping to individual sprinkler head locations installing new 1/2-inch sprinkler heads on pre-action system and pre-action system recertification. This report describes the in-place epoxy lining process and the effectiveness of the coating system to eliminate the pinhole leak problem.