Details: checking and tightening of jumpers replacement of damaged disc insulators tension string suspension string repairing of power conductor when lowering of conductor is necessary. complete job including laying of conductor, making of compression joint, if any, rough sagging tensioning of conductor, fixing dead end assembly etc. upto span of 500 meter tension repairing damaged conductor by using harical sleve or bolted or by shorting methode with out lowering. the conductor repairing of earthwire when lowering of earthwire is necessary (complete job) including compression joint if required. laying of earthwire, tensioning, dead end assembly etc. upto span length 500 meter tension to tension point. tightening of nuts and bolts of tower superstructures replacement of missing ones. a) tower weight more than 4 tonnes to 7.5 tonnes b) tower weight more than 7.5 tonnes c) tower weight more than 7.5 tonnes checking / tightening of tower footing earthing bolts and measuring tower footing resi