painting of equipments, pipe lines and structures of exchange unit areas in main plant of hwpm; 1 external cleaning & painting of structures, tanks, pipelines, equipment & vessels at all elevations upto 45 mtrs including scaffolding arrangement as per the enclosed technical specification 2 letter writing with height of letter ranging from 50 mm to 100 mm 3 letter writing with height of letter ranging from 100 mm to 150 mm 4 letter writing with height of letters 300 mm 5 painting of arrows indicating flow direction of length ranging from 80-150mm and width 25mm 6 dismantling of pipe support clamps for painting folowed by assembly after painting.