Installs, modifies, overhauls, fabricates, calibrates, repairs and tests new and existing high-pressure piping systems and equipment such as fire suppression systems, chemical concentrate pumps and storage tanks, strainers, pressure tanks, hydraulic, alarm sensing valves, deluge pumps and tanks, circulating pumps, traps, thermostats, high pressure water pumps, high-pressure booster pumps, expansion tanks and centrifugal fire pumps. Plans and lays out installation, repair, modification and testing of high-pressure fire protection piping systems, high pressure fire fighting pumps and backflow prevention device assemblies from mechanical and electrical block diagrams, schematics, blueprints, technical orders, manufactures isntructions, National Fire Protection, Texas Commission on Environmental Quality and Uified Facilities Criteria 3-600-02 guidelines.