1. Core Function & Definition
- Aboveground or underground storage tank for used oil, waste lubricants, and other waste fluids.
- Inner primary tank for storage and outer secondary containment wall.
- If inner tank leaks, outer wall captures the spill.
- Prevents contamination of soil, groundwater, or drainage systems.
2. Typical Stored Media
- Waste engine oil, waste hydraulic oil, waste gear oil.
- Waste coolant, antifreeze, solvents, and other oily wastewater.
- Common sources: workshops, vehicle maintenance centers, industrial plants, and recycling facilities.
- Inner tank holds the waste fluid; interstitial space allows leak monitoring before contamination spreads.
3. Environmental Compliance & Secondary Containment
- Helps users meet secondary containment requirements without a separate bund in many cases.
- Outer wall typically provides containment capacity around 110% of primary tank volume.
- Captures spills, overfills, or inner tank leaks within the tank structure.
- Reduces environmental risk and simplifies site layout.
4. Leak Detection & Operational Safety
- Includes leak detection port, interstitial monitor, level gauge, vent, and emergency vent.
- Allows early detection of inner tank leakage.
- Enables timely waste oil collection and prevents uncontrolled discharge.
- For international buyers, confirm UL 142, EPA secondary containment rules, or local fire and environmental codes before purchase.