1. Clarification of Interstitial Space Function
- Safety buffer zone – not a storage compartment, designed for continuous leak detection.
- Maintained under vacuum or filled with specialized monitoring fluid.
- Does not accumulate fuel residues or sludge, so no routine internal cleaning is required.
2. Continuous Monitoring & Fluid Management
- Primary maintenance – regular inspection of leak detection system and sensors.
- Frequently check monitoring fluid for proper function.
- If liquid‑filled, test fluid periodically to verify purity and detect potential inner tank contamination.
3. Professional Intervention for Contamination
- If breach detected – professional cleaning and purging required.
- Specialized equipment and trained personnel needed for safe removal of hazardous chemicals.
- After clearing, interstice must be dried or refilled with fresh monitoring fluid before resuming operation.
4. Routine External Maintenance Requirements
- Strict maintenance schedule – weekly sump inspections for spilled fuel.
- Monthly checks of valves and overfill prevention equipment.
- Annual visual inspections for rust, structural damage, and external component integrity.