Storage Tanks

Atmospheric and pressure storage vessels for chemicals, water, fuels, and process intermediates. Every tank is custom-designed for the stored medium — material selection, wall thickness, and internals are driven by the specific application.

Vertical Tanks — Cone or flat bottom on concrete ring foundation. Higher capacity per unit footprint — standard for large-volume storage. Cone bottoms for complete drainage of viscous or settled materials.

Horizontal Tanks — Saddle-supported on steel or concrete cradles. Lower profile for height-restricted installations. Convenient for mobile or skid-mounted applications and where bottom access is needed.

Material Selection

Material choice is driven by the stored medium:

• Mild steel with epoxy lining for water, fuel oil, and non-corrosive chemicals
• SS 304 for food-grade, pharmaceutical, and mildly corrosive service
• SS 316 for chloride-containing chemicals, seawater, and aggressive media
• Rubber or FRP lining for acid storage in mild steel shells

Wall thickness calculated per ASME or API code for the design pressure, temperature, and corrosion allowance.

Internals & Accessories

• Agitator mounts — reinforced nozzles with bearing pads for top-entry mixers
• Heating jackets — half-pipe or dimple jacket for maintaining product temperature
• Baffles — vertical plates to improve mixing efficiency and prevent vortex formation
• Level instrumentation — sight glass, float gauge, or ultrasonic level transmitter
• Manways — 500mm or 600mm diameter for internal inspection access

Fabrication & Testing

Tanks are fabricated in-shop where possible and transported as complete units. Larger tanks are site-fabricated from rolled plate with field welding.

All tanks undergo:

• Radiographic examination of critical welds (per code requirements)
• Hydrostatic pressure test at 1.5x design pressure
• Leak test on all nozzle connections
• Surface preparation and coating before dispatch

Foundation Design

Foundation recommendations provided with each tank — ring wall for vertical tanks, saddle piers for horizontal. Proper foundation prevents shell distortion that causes premature failure and leak paths.