INTAKE & SEDIMENT MANAGEMENT
REVENUE KILLER: TRASH & DEBRIS
Logic: Every leaf, branch, or plastic bag on the rack creates flow resistance.
Head Loss = Lost Power. A 1-meter drop due to a blocked rack is pure financial loss.
A clean intake is the first line of defense. If trash passes the rack, it destroys MIV seals and blocks guide vanes.
CLEANING TRIGGER
The intake rack is the lungs of the hydro system. It must breathe freely.
Differential Pressure (dP) Analysis
Initiate Cleaning
Automatic / Manual Raking
SEDIMENT THREAT & FLUSHING
Synergistic Threat Logic
Sand strips the oxide layer off the runner/guide vanes.
Provides a rough surface for bubble formation.
Flushing Procedure
- 01 Check silt level weekly (daily during high water).
- 02 Open bottom outlets to flush accumulated sediment back to river.
- 03 Ensure flushing tunnel is clear and flow returns only when water is clear.
OPERATOR MISSION TASKS
Check Rack Differential. Clean if > 20cm.
Flush Settling Basin (Sand Trap).
Emergency Rack Inspect due to heavy debris.