One year of specialized experience in the installation, test, diagnosis, maintenance, and repair of a range of plumbing and piping equipment and systems such as, but not limited to, fire protection, domestic water, natural gas, sanitary and storm sewage systems, and fuel distribution systems; pipelines from 1/4 to 72 inches, fire protection sprinklers, fire hydrants, valves, pumps, pressure regulators, joints and fixtures, and related equipment. Inspects, maintains, repairs, installs and modifies plumbing and distribution piping systems which may include fire suppression, domestic water, natural gas, storm water, sanitary sewage systems, industrial waste, compressed air, steam, High Temp Hot Water, Hot Water and Chilled Water systems.