| Internal Tank Piping | External Tank Piping | | Plant Piping and Pipe Racks | Photos | Internal Tank Piping Inlet Diffusers Suction lines with Vortex Breakers Water Draw Off Lines with Bottom Sumps Floating Roof Pipe and Hose Drains Heating Coils External Tank Piping Modifications Elevation Adjustments Expansion Loops Pipe Headers and Manifolds Fire Foam Systems Plant Piping and Pipe Racks Piping Modifications Loading Rack Piping Pipe Racks and Supports Hot Taps Underground Pipe Testing Click to enlarge photos.