ATA 2025- Repair of eastern cell of cooling tower in Phosphoric Acid Plant of FACT CD, Cochin Division, Ambalamedu, Kochi.

ATA 2025- Repair of eastern cell of cooling tower in Phosphoric Acid Plant of FACT CD, Cochin Division, Ambalamedu, Kochi.

Cleaning the structural/other surface neatly at all heights, manually with suitable tools or with high pressure water jet spray (using suitable mechanical means), and scraping if required, to remove the whole accumulated dust, rust, dirt etc as per departmental instructions.

Taking out and cleaning the existing PVC fills from cooling Tower and placing in position inside the cooling tower including re-arranging the wooden joists for accomodating the PVC fills if required at all heights including all labour charges, scaffolding charges etc. complete as per departmental instructions.

Removal of existing wooden grids from the the tower for repair works of damaged columns/ beams and stacking the same at the site followed by placing the same in the actual location prior to removal

Supplying good quality Maruthu’ wood wrought and put up for joists, planks & grids of specified size to suit at site as per departmental instructions.

Labour charges for conveying from site store and fixing in position the Maruthu wood wrought and put up joists, planks,runners etc including labour charges for fixing nails if required and providing gooves & cutting at edges etc. as per site conditions, after removing the damaged members,at all heights as per departmental instructions

Chipping & removing portions of existing RCC works carefullly without damaging the remaining structure& removing the debris as per directions within a distance of 150m

Chipping & removing old cement plastered surface including racking out joints & clearing the surface for replastering & disposal of the debris as per directions within a distance of 150 m.

Applying one coat of epoxy high build finish paint of approved brand & colour at all levels including cost of paint and materials, scaffolding charges (if required), labour charges and all other incidental charges etc. complete as per deptl. instructions.

Painting with one coat of zinc chromate yellow metal primer and two coats of synthetic enamel paint using approved brand & quality at all heights after cleaning the surface by using waterjet spray/ manually including cost of all paint and materials, labour charges, etc.complete as per deptl instructions

Centering and shuttering including strutting, propping etc. and removal of form for :Lintels, beams, plinth beams, girders, bressumers and cantilevers

Centering and shuttering including strutting, propping etc. and removal of form for :Columns, Pillars, Piers, Abutments, Posts and Struts

Steel reinforcement for R.C.C. work including straightening, cutting, bending, placing in position and binding all complete above plinth level Thermo Mechanically Treated bars of grade Fe-500D or more.

Rust Removal: Providing and applying approved alkaline chemical rust remover with paint brush after cleaning the surface thoroghly and removing loose particles after 24 hours of its application

Anticorrosive Treatment to Steel: Providing and applying single coat of zinc rich anti corrosive coating such as nitozinc primer in 40 micron thickness to the exposed reinforcing bars after application of alkaline rust remover on main and lateral links all complete as directed by EIC

Providing and applying bond coat on the prepared surface to receive new polymer mortar/ polymer modified concrete, with two componentsepoxy based bonding coat Concresive1414 of BASF/Nitobond EP of Fosroc orequivalent material in one full coat. Laying of reinstatement polymer mortaror micro concrete shall be completedwithin the overlay time of bonding coat.This bond coat act as bonding agentbetween old and new concrete. Item rateinclusive of all materials, labours,supervision, tools, tackles, transportation, fixing etc., complete as per specification and as directed

Relnforced cement concrete 1:1.5:3 (l cement : 1.5 coarse sand (zone-II1) : 3 graded stone aggregate 20 mm nominal size) work at all- levels, excluding cost of centering, shuttering, finishing and reinforcement & including admixtures in recommended proportions as per IS: 9103 to accelerate, retard setting of concrete, improve workability without impairing strength and Curabillty as per direction of Enqineer in-charge.

Providing and laying of polymer modified micro- concrete like Emaco S46 T of BASF/Renderoc RG (S)of Fosroc/ReCon MC 40 of Conmix or equivalent material blended with washed, saturated surface-dry (SSD), graded, low absorption, high density aggregates of size 8 mm & below up to 30% by weight of micro-concrete and water at 4 lit. per 25 kg bag and pouring into the form work using suitable pumping device for uniform flow of concrete. The side shuttering can be removed after 3 days and the bottom shuttering after 7 days ensuring proper bond between the micro concrete and existing concrete substrate. Item rate inclusive of all materials, labours, supervision, tools, tackles, transportation, curing, etc., complete as per specification and as directed.

Providing and laying 25 mm (incl.+5mm) average thick polymer modified latex mortar like "RENDROC SP40" of M/S FOSROC chemicals or equivalent with poly propylene fibers as per the manufacturers specification over the concrete surface roughened by chipping followed by water jetting including filling the crevices/ undulations flushing with adjacent surface curing etc., concrete at all heights including all material and labour charges and all as directed by EIC

Cement plastering with CM 1:4,15 mm thick one coat floated hard and trowelled smooth at all levels including cost of cement

Supplying, # CONBEXTRA GP 2” or equivalent epoxy grout for grouting works.

K.M.Joy (BID ID -3167386)

Sabu John A (BID ID -3166944)

JOSHY GEORGE (BID ID -3164529)

BRIJEESH K.N (BID ID -3167239)