1. Routine Inspection & Leak Monitoring
- Frequent visual checks of tank shell, roof, bottom, foundation, and surrounding bund.
- Look for corrosion, coating damage, weld cracks, settlement, and leaks around valves, flanges, and piping.
- Monthly leak inspections commonly required for gasoline service equipment.
- Any detected leak must be recorded, investigated, and repaired promptly.
2. Vent, Valve & Safety Device Care
- Breathing valves, pressure vacuum relief valves, flame arresters, gauges, and emergency vents must remain clean and sound.
- Verify valve discs move freely, screens are free of debris, and gaskets are intact.
- Instruments must show accurate readings.
- In cold weather, vents and drains need extra attention to prevent freezing or icing.
3. Water, Sludge & Corrosion Control
- Water accumulation at tank bottom accelerates corrosion, promotes microbial growth, and degrades fuel quality.
- Drain free water safely, monitor for sediment, and schedule periodic cleaning when sludge builds up.
- Inspect external coatings, cathodic protection systems, grounding connections, and bonding jumpers.
- Controls corrosion and reduces static ignition risks.
4. Periodic Testing, Cleaning & Record Keeping
- Major activities: tank out of service, safe isolation, gas‑free certification, cleaning, internal inspection.
- Thickness measurement and defect repair as required.
- Follow recognized standards: API 653, API 2015, NFPA 30, and NFPA 326.
- Document all inspections, repairs, calibration results, and leak findings for compliance and asset management.