• Melbourne Water

    Eastern Treatment Plant Tertiary Upgrade

    Melbourne, Australia

Project Summary

Melbourne Water’s Eastern Treatment Plant in Melbourne, Australia, is the largest activated sludge wastewater treatment plant in the country and treats sewage from 1.5 million people. This AUD 418 million upgrade will add an advanced tertiary treatment plant to produce 708 megaliters per day of high-quality recycled water for non-potable applications. The plant will also improve treated effluent quality at the ocean discharge outfall and so will benefit the marine environment.

Specialist team members on four continents worked concurrently to create 175 civil, structural, electrical, mechanical, and piping models that could be referenced in a single view and coordinated by the on-site design team. Creating intelligent P&IDs using AutoPLANT P&ID, integrated structural design using ProSteel, and 3D modeling of yard services in a single model optimized layouts, minimized clashes, and allowed design interfaces to be managed in a common environment.

Use of 3D modeling ensured that each of the treatment plant options, including new processes and technologies, could be clearly visualized by stakeholders. Using optioneering, the preferred option could be selected, for a fast-track approach with design, procurement, and construction progressing in parallel, ensuring that the short delivery timeframe was met. The models enabled accurate communication of concerns, reducing the need for rework and providing significant cost savings.

An early challenge was to develop sufficiently detailed concept design options for a detailed multi-criteria selection process. To facilitate this, 3D modeling and intelligent P&IDs were used extensively. To ensure optioneering could take place, AutoPLANT P&ID allowed detailed equipment, valve, and instrument lists to be quickly generated for each process option. This enabled the effective bill of materials take-off of key assets and supported cost estimation requirements. AutoPLANT P&ID was also essential to producing and managing procurement schedules.
  • The resulting intelligent models for the wastewater treatment plant are also available for ongoing operations and maintenance.
  • Automated piping isometrics alone saved about 8,000 man-hours.
  • Effective communication was promoted through coordination of the 3D models, which enabled operators, site engineers, and designers to review for constructability, safety, layout, and clashes.