Maintaining and upkeeping of Radial Gates and stop log gates of Bisalpur Dam

Painting of Spillway gates, sluice gates, canal gates (both vertical or radial),stop log gates, exposed embedded parts and all un machined ferrous surface (hoist cylinders, cylinder heads, hydraulic piping, pipe fittings, bonnet covers), exposed to water as per IS 14177,for which surface preparation by blast cleaning of class "B" primer coat (one coat) of inorganic zinc silicate (preferably airless spray)or alternatively, two coats of zinc rich primer(containing not less than 85% zinc on dry film) to give dry film thickness of 70 ± 5 micron and finish coat (two coats) of solvent less coal tar epoxy paint using airless spray to provide dry film thickness of 150±5 micron per coats. Thus, total dry film thickness of all the coats, including primer coating, should not be less than 350 microns, this will be include expenses on mobilisation and demobilisation of equipments. For maintenance painting the surface preparation shall be done by appropriate hand and power tool cleaning, prior to hand power tool cleaning. Any heavy layer of rust should be removed by chipping visible oil, grease, dirt and other foreign material be cleaned using solvents like clean mineral spirits, xylol or white gasoline. After hand and power tool cleaning the surface should be cleaned of loose dust and debris and/or blast cleaned as laid down in para 7.0 of IS code 14177. After the surface preparation the primer and finishing coats shall be carried out as provided above for painting etc. complete.Up to 1.5m height

Cleaning gates/hoists/embedded parts forre painting by removing rust,oil,paint,grease etc.,by using wire brush,scrubber,rust remover and applyinga coat of rust inhibitive compound etc., complete.

Providing and applying one coat of Zin rich epoxy primer paint (zinc content 85%) of approved quality 40 micron dry film thickness to gates / embedded parts/ hois components including cost of all materials ,labour, removing rust cleaning surface, scaffolding with all lead and all lifts etc. complete.