Checklist 4: Distribution Network
1. Pressure Management
☐ Pressure zones defined
The distribution system must be divided into appropriate pressure zones to ensure stable operating conditions across all service areas and to avoid excessive pressure differences.
2. Network Layout
☐ Looped system planned
A looped network design must be implemented wherever possible to increase reliability, improve flow flexibility, and ensure continued supply during pipe failures or maintenance.
3. Material Selection
☐ Pipe materials selected
Suitable pipe materials must be chosen based on pressure requirements, soil conditions, durability, and long-term operational performance of the distribution system.
4. Pressure Control
☐ Pressure range verified
Operating pressure must be checked and maintained within the recommended range to prevent pipe damage, leakage, and customer-side pressure issues.
5. Water Quality Protection
☐ Stagnation avoided
The network must be designed to prevent low-flow or dead-end sections where water age increases and hygienic water quality may deteriorate.
6. System Expansion
☐ Future expansion considered
The design must include provisions for future demand growth, additional connections, and potential network extensions without major redesign.
7. Valves and Fittings
☐ Valves and fittings included
All necessary valves, hydrants, and fittings must be integrated into the design to ensure operational control, isolation capability, and maintenance flexibility.
8. Documentation
☐ Documentation completed
Accurate and up-to-date documentation of the distribution network must be maintained, including maps, asset data, and operational records for long-term management.