Operation And Maintenance Of 11Kv Sub-Station Equipment, 320Kva Dg Sets, Internal Electrical Installations, Water Supply Pump Sets, Addressable Fire Alarm System, Fire Fighting System And Lifts At Nirvachan Sadan, New Delhi For The Fy - 2025-26. Sh- Annual Prive And Periodical Maintenance Of 83 Hp Fire Pump Dg Sets Including B Check.