Asset register update to GRAP compliance and Strategic Asset Management Plan development for a regional South African water utility — incorporating a Digital Twin model to forecast cost and availability scenarios across the supply network.
The utility needed to establish the revised economic life of water supply system components and determine upgrade requirements and cost implications. A key driver was operating at 75 Ml/day against a design capacity of 55 Ml/day — significantly above the planned throughput. The existing asset register was not GRAP-compliant and lacked the condition data needed to support investment planning and regulatory reporting.
Optimal collaborated with a specialist engineering consultancy to deliver the programme across three workstreams: a physical condition assessment of assets across the supply network; a comprehensive review and update of the asset register to bring it into GRAP compliance; and development of a Strategic Asset Management Plan spanning a 10-year horizon. An Enterprise Digital Twin model was developed and used to run scenario analysis — demonstrating the cost and availability impact of different maintenance, replacement and redundancy strategies.
The utility gained a GRAP-compliant asset register and a structured 10-year SAMP providing the foundation for capital planning and regulatory compliance. The Digital Twin model gave leadership a quantified basis for investment decisions — demonstrating the value of proactive condition assessment and targeted replacement over reactive management.