Repair and painting works of overhead tanks and associated structural members in booster pump house in Township of FACT Cochin Division, Ambalamedu, Kochi.

Repair and painting works of overhead tanks and associated structural members in booster pump house in Township of FACT Cochin Division, Ambalamedu, Kochi.

Providing staging/ scaffolding at all heights for beams, columns, slabs, tank body, MS structural members etc. as per site requirement for repairs and painting works in three overhead tanks in booster pump house

Painting with one coat of approved quality exterior primer to walls, columns, beams, slabs etc after neatly cleaning the surface by removing loose paint, dirt etc.by cleaning with water, scrapping etc. at all heights including cost of all materials, labour charges etc.complete as per instructions.

Painting with one coat of external emulsion of approved quality and colour over the priming coat already done and paid separately after cleaning with cotton waste including cost of all materials, labour charges etc complete at all heights as per departmental instructions

Painting with one coat to old surface/succeeding coat of external emulsion of approved quality and colour after cleaning with cotton waste including cost of all materials, labour charges etc complete at all heights as per departmental instructions

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.

Painting one priming coat on new/old iron work at all heights with approved quality zinc chromate yellow metal primer of approved brand & quality at all heights including cost of primer and materials, labour, scaffolding charges, cleaning the site etc. as per departmental instructions

Painting with synthetic enamel paint using approved quality paint as specified two coats in distinct colour at all heights (over a priming coat already done and paid separately) for iron work including cost of all materials, labour charges, scaffolding charges etc.complete as per deptl instructions.

Painting letters or figures 6.50 cm, 8 cm & 10 cm ht. Block, Roman, Italic or Indian with any kind of paint

Painting letters or figures above 10 cm & up to 20 cm ht. Block, Roman, Italic or Indian with any kind of paint

Supply of suitable mechanical injection packer Nozzle for PU grouting.Injection packers shall have check valve for preventing back flush of grout and capable of holding pressure up to 1050 psi (7 N/mm2).

Preventing leak from tanks using suitable PU injection grout of Fosroc Nitofill WS60, UR63 or SIKA INJECTION 101H, 201CE. Cost of mechanical injection packers with check valve is not included in this item. Work Involves: Study and determine leak pattern and establish leakage source. Drill injection ports at distance of 200 mm c/c or suitably to intercept the leak paths. The injection ports shall be drilled at a depth required. Check for positive interception of injection ports onto leak path by observing for leakage diversion through injection ports. If leak is not detected in the injection ports, change location or angle and re-drill. Once positive interception is confirmed, clean injection ports with water and install mechanical injection packers (supplied vide seperate item).Pump water through injection packers to flush out leak paths as well as saturate it with water (if necessary).Seal off honey comb area or larger cracks, which leak severely when pumped with water, with hydraulic cement (if necessary).Pump the water-reactive polyurethane grout through injection packers to a prescribed pressure. The mixing (if 2 pack) of the PU material must be strictly according to the supplier's recommendation. As the grouts expand during the reaction with water, it is necessary to return to previously grouted points to check that the prescribed backpressure is maintained before grout is fully cured. Remove injection packer after the grout has fully cured. The quoted rate shall be inclusive of cost of PU grout/ form, all labour involved in drilling, fixing packers, injecting, removing, sealing ,necessary dewatering charges from pits up to completion of work etc (Payment will be based on weight of PU grout/ form used in Kg)

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