Items - Design, supply, erection, testing and commissioning of Supervisory Control and Data Acquisition (SCADA) Systems (as per RDSO specification no. TI/SPC/RCC/SCADA/0134 or latest) for TSS/SP/SSPs including modification of existing SCADA system in RCC at New Delhi and Lucknow in connection with 2x25 KV AT feeding system in New Delhi to Palwal and Kanpur to Lucknow sections of Northern Railway