bids are invited for custom bid for services - hiring of annual rate contract for miscellaneous maintenance work at cpf gandhar for a period of 03 years.; 1 preparation of chemical solution including lifting, shifting of chemical bags / barrels (a) upto 50 ltrs/kg (b) upto 200 ltrs/kg 2 decontamination of empty barrels / containers / filter element. (a) upto 50 ltrs/kg (b) upto 200 ltrs/kg (c) filter elements 3 dismantling, lifting, shifting, loading & unloading of equipment m/c etc. 4 servicing of valves including stem & gear box, by greasing & tightening of glands / bonnet gaskets. (grease shall be provided by ongc) (a) upto 1 1/2 (b) 2 to 4 (c) 6 to 8 (d) 10 to 12 (e) 14 to 18 (f) 20 to 24 5 arresting of leakages from flanges by replacing gaskets. (gaskets shall be provided by ongc) (a) upto 1 1/2 all class (b) 2 to 4 all class (c) 6 to 8 all class (d) 10 to 12 all class (e) 14 to 18 all class (f) 20 to 24 all class (g) above 24 all class 6 cleaning of strainers (a) upto 2 (b) 2 to 10 (c) 10 to 14 7 blinding/de-blinding of vessels, equipment, nozzles, man-holes & pipes. (a) upto 1 1/2, all class (b) 2 to 4, upto 600# (c) 2 to 4, upto 2500# (d) 6 to 8, upto 600# (e) 6 to 8, upto 2500# (f) 10 to 14, 150# (g) 10 to 14, upto 600# (h) 16 to 20, 150# (i) 16 to 20, upto 600# (j) 22 to 24, 150# (k) 22 to 24, upto 600# 8 cleaning / flushing / de-choking of ows system of strainers (a) ows pipe (b) ows funnels (c) ows pits 9 oil cleaning and restoration of spilled area in plant 10 oil cleaning and restoration of spilled oil in saraswani t-point 11 line leakage repair by fixing repair clamps ( clamps shall be provided by ongc) (for underground lines) (a) 2 to 6 (b) 8 to 12 (c) 14 to 16 12 cleaning of booster pumps suction header, (quarterly) 13 cleaning of plant units floor (twice in a month) 14 cleaning of admin building aquarium of size 820*380*770 mm (once a month)