Safety Alert
Storage tank external floating roof: the importance of inspection and maintenance to retain buoyancy of the roof structure
Storage tank external floating roof: the importance of inspection and maintenance to retain buoyancy of the roof structure
- HSE
- Safety Alert
- HID3-2014
- Inspection and MaintenanceStructural and Asset Integrity
- ExplosionLoss of containmentStructural and asset integrity
- Inspection and maintenance
- Storage tanks
- Alarm managementManagement of changePreventive maintenance
Summary
This alert addresses buoyancy and integrity of external floating roofs on hydrocarbon storage tanks. It explains pontoon flooding, rainwater accumulation, fluid specific gravity and repair defects, and recommends design calculations, in-service and out-of-service examinations, logged operator checks and, where reasonably practicable, roof–liquid deviation alarms.
Classifications: Explosion; explosive atmospheres.
Classifications: Loss of containment; containment loss.
Classifications: Structural and asset integrity; asset integrity; structural integrity.
Classifications: Inspection and maintenance; asset inspection; equipment maintenance.
Classifications: Storage tanks; atmospheric tanks.
Classifications: Alarm management.
Classifications: Management of change; MOC; change management.
Classifications: Preventive maintenance; preventative maintenance; planned maintenance.
Summary
The alert stresses inspection and maintenance needed to preserve the buoyancy of external floating tank roofs.
HID3-2014. Themes: inspection and maintenance, structural and asset integrity.