Repairs or replaces plumbing fixtures such as sinks, commodes, water heaters and hot water tanks: mends or replaces burst or leaky pipes: tests joints and pipe systems for leaks: opens clogged drains: measures, cuts, threads, bends, reams, and installs pipe and pipe fittings. Installs and maintains various facility piping systems including but not limited to fire protection, process and building heating systems, steam heating systems, potable water, compressed air, process gases and domestic water systems.