procurement of closed drain tank and sump pump , supply of closed drain tank & sump pump at madhuban (duliajan) , supply of horizontal, cylindrical, underground inside pit, saddle mounted closed drain tank of capacity 27.5 m3 with inlet size of 6” nb, ansi rating 150#, with blind/mounted flanges for nozzles as required as per tender specification, attached p&id, data sheets and technical specifications etc. , gaskets for all flange joints as mandatory spares , fasteners for all flange joints as mandatory spares 20% (min. 04 nos. of each size & type) , gaskets for all flange joints as pre-commissioning & commissioning spares , fasteners for all flange joints as pre-commissioning & commissioning spares 10% (min. 02 nos. of each size & type) , design, engineering, manufacture, procurement of materials and bought out components including, assembly at shop, inspection, testing at manufacturers works, packing & delivery, supply of vertical submersible (type vs4) sump pump with design flowrate of 6 m3/hr as per data sheet, p&id and technical specifications including supply of all commissioning spares, special tools and tackles , supervision of erection and commissioning of item no.1 & 2 (with per diem rate).