Carrying Out Routine & Preventive Maintenance Works Of 400Kv-220 Kv Switchyard Equipments, Muss And Their Illumination, Power & Switchyard Auxiliary Transformers Of Units 1, 2 And 3Gts, Sts, Icts, Uts Including Deweeding Works At Switchyard & Muss, At Btps For A Period Of 1 Year