Topic 2: Maintenance
Description
Maintenance ensures that all components of a drinking water supply system remain functional, safe, and reliable over their entire service life.
Effective maintenance prevents gradual performance losses, reduces unexpected failures, and supports stable operation of pumps, reservoirs, pipelines, and electrical systems. In most systems, preventive maintenance is significantly more cost-effective than emergency repairs after breakdowns occur.
How It Works
Maintenance activities are organized across all system components:
Pumps
- Vibration checks
- Bearing inspections
- Motor testing
- Performance verification
Reservoirs
- Structural inspections
- Chamber cleaning
- Ventilation checks
- Overflow inspections
Distribution Networks
- Leak detection
- Valve inspections
- Flushing operations
Electrical Systems
- Control panel inspections
- Generator testing
- Alarm system verification
Maintenance is typically planned in cycles and coordinated with operational conditions to minimize service disruptions.
Types of Maintenance
Preventive Maintenance
- Performed according to a fixed schedule
- Aims to prevent failures before they occur
- Based on time intervals or operating hours
Predictive Maintenance
- Based on condition monitoring and system performance data
- Uses trends, measurements, and diagnostics to predict failures
- Allows targeted intervention before breakdowns occur
Corrective Maintenance
- Performed after a failure has already occurred
- Focuses on restoring system functionality
- Often more costly and disruptive than planned maintenance
Advantages
- Reduced system downtime and service interruptions
- Lower long-term repair and replacement costs
- Extended asset lifespan of infrastructure and equipment
- Improved overall operational reliability
Disadvantages
- Requires structured planning and coordination
- Needs continuous allocation of staff and resources
- Can temporarily interrupt normal system operation
Typical Applications
- All drinking water supply systems, regardless of size or complexity