Civil Works & HV Cable Laying for Substations and Lines

Civil and cable works set the foundations for everything else. Poor trench, duct or pulling practice damages cables and delays electrical works.

• Foundations and cable trenches
• Duct bank and pit installation
• Cable pulling with tension monitoring
• Cleating and support systems
• Reinstatement and as-built surveys

• Civil and cable route drawings
• Geotechnical and services data
• Cable pulling calculations
• Permits and traffic management

• Pulling tension records
• Inspection records
• As-built survey drawings
• Reinstatement records

1. Stage 1

   Survey

   Locate services and confirm route.

2. Stage 2

   Civil works

   Excavate, duct and backfill.

3. Stage 3

   Cable laying

   Pull and cleat cables.

4. Stage 4

   Reinstatement

   Restore and record as-built.

1. 1.Supervisor checks work
2. 2.Engineer reviews pulling records
3. 3.Client accepts as-built

• DNSP connection and design standards (e.g. Ausgrid, Endeavour, Essential, Energex/Ergon, Powercor, SA Power Networks)
• TNSP requirements (e.g. Transgrid, Powerlink, AusNet, ElectraNet, TasNetworks)
• AEMO / National Electricity Rules Chapter 5 connection obligations
• Network operator access, switching and permit-to-work rules

• ITP for excavation, ducting and pulling
• Duct proving records
• Survey checks

• Safety in Design (SiD) workshops and hazard register
• HV access, isolation and permit-to-work compliance
• Safe Work Method Statements for high-risk construction work
• Exclusion zones, step/touch potential and induced voltage controls
• Excavation and underground-services controls
• Traffic management

• Material efficiency and reduced site rework
• Waste segregation and recycling on site
• Embodied-carbon awareness in equipment selection
• Spoil management and erosion controls

• Design decisions recorded against asset life-cycle cost (ISO 55001)
• Asset data and as-built records handed over in client asset-register format
• Maintainability and spares strategy considered at design stage

• Substation designers
• Cable termination teams
• Councils and road authorities

Indicative only — actual programme depends on scope, approvals and outage windows.

Case studies for this service are being prepared.