Kerala State Electricity Board Tender

:Replacing Rubber seals including cutting and removing all existing rubber seals from the gate, supplying and fixing new Teflon cladded rubber seal of approved make and good quality after getting the approval of departmental officers having the same dimensions as that of the existing one including making holes in the seals at par with steel stem replacing all nuts and bolts with SS nuts (12mm diameter and 100mm length - paid separately) and CSK bolts and greasing the moving parts, replacing of worn out parts including cost of rubber seal, epoxy coal tar painting of replaced parts, etc complete as directed by the departmental officers at site. (For 1 gate)

Suplying and fixing SS CSK bolts and nuts, washer for fixing rubber seal (12mm diameter and 100mm length)

Finishing with Epoxy paint (two coats) of approved make at all locations prepared and applied as per manufacturer's specifications and including appropriate priming coat with zinc rich primer of approved make, preparation of surface, etc. complete. 13.52.1 On steel work

Providing & fixing Poly carbonate multi wall plain sheet 6 mm thick as approved by the Engineer in charge and should be supplied in a single length of 12 M or as decided by the Engineer in charge. The sheets shall be fixed using self drilling/ self tapping screw of size ( 5.5x55mm) with EPDM seal complete upto any pitch in horizontal /vertical / curved surface, but excluding the cost of purlins, rafters, trusses, and including cutting to size and shapes where ever required.

Wall painting with plastic emulsion paint of approved brand and manufacture to give an even shade including priming coat etc complete as per the direction of departmental of officers.

Painting the control shaft gate after surface preparation through copper slag blasting process as per IS 1477 Part I -1971 the average surface roughness after copper blast should not exceed 40 microns) the copper blast surface should be cleaned from loose dust and debris through air blast with the help of blower, to the class B specififation ie., at least 95% of surface of steel should be cleared to base metal except some tightly bonded residue in the form of mill scale/rust only. Then apply two coats of zinc rich primer (containing not less than 85% of zinc on dry film) to give a total dry film thickness of 70+5 microns within a time gap of 6 hours, after surface preparation. Then apply two coats of solvent less coal tar epoxy paint at an interval of 24 hours (150 microns each) including the cost of epoxy paint, primer, copper slag, compressed air, labour et., complete as per the guide lines of IS 14177-1994 (reaffirmed 2019) and as per the directions of departmental officers