Design & Construction Works – PTC Critical Infrastructure Upgrade - Electrical Supply Upgrade (ESU4)

Summary and scope

The Public Transport Centre (PTC), constructed in 1977, is a critical operational hub for the Public Transport Authority (PTA). Now approaching 48 years of service, the facility continues to rely heavily on its original electrical infrastructure, giving rise to increasing reliability, safety, and regulatory compliance risks that threaten the continuity of PTA operations. Independent reliability, design, and electrical load assessments conducted since 2014 have identified significant deficiencies within the existing electrical system, including: The Basement Main Switchboard (BMSB) operating at full capacity, with no provision for future expansion;Obsolete and ageing electrical assets presenting elevated reliability and maintenance risks; andSingle points of failure that have the potential to result in unplanned power outages impacting critical operations. The Project “Work Package – Electrical Supply Upgrade” (ESU4) has been developed as part of the broader PTC Critical Infrastructure program to mitigate these risks and to provide a safe, reliable, resilient, and standards?compliant electrical supply for current and future operational requirements. Radio Systems Replacement (RSR) - Upgrade of Communication Room PTA’s existing analogue radio system dates from the early 1990s and is approaching the end of its operational life. The system provides voice?only communications and lacks data capability, which limits PTA’s ability to adopt modern rail operational technologies. As the system continues to age, reliability is diminishing, directly impacting rail operations. The Australian Communications and Media Authority (ACMA) has mandated a nationwide reduction in the use of the 400 MHz radio spectrum, requiring PTA to transition to a more efficient, modern radio system. The Radio Systems Replacement (RSR) program has been established to: Achieve compliance with ACMA regulatory requirements;Maintain and enhance the safety and reliability of rail operations;Enable increased train frequencies through the deployment of Automatic Train Control (ATC) systems operating on a data?capable radio network; andSupport the deployment of additional onboard and network applications to improve passenger safety, security, and service outcomes. As part of the RSR program, existing facilities across the PTA network require upgrading to accommodate new radio equipment. One such facility is the Communications Room located in the basement of the PTC building. The upgrade of this room forms a discrete scope that may be delivered as part of this contract.