corrigendum - ntpc farakka stage i rcc chimney of height 190m rehabilitation including painting stage -i rcc chimney ( of height 190m ) rehabilitation including painting with temporary arrangement of schaffolding ( including approved design and drawing of schaffolding for fixing and removing of same ) and arrangement of aviation warning lights an , stage-i rcc chimney rehabilitation fkk , making scaffolding for rain water pipes , designing , arranging and erecting safe , chipping of rcc cncrte&expose reinfrcmnt , surface preparation/chipping , providing&applying epoxy resin bond coat , repair of cracks by applying joint , drilling holes-100mm depth on cncrte , reinforcement for rcc work&binding , concrete surface corrosion inhibitor , applying epoxy based painting upto 50 . 0m , applying epoxy based painting , p/f lighting conductor of 25 mm , wiring for aviation obstruction light , system controller-design , engineering , s , photo electric controller-design , engine , bricksoling of 125mmthickof cementmorter