dismantling, lifting and lowering of submersible pump sets and allied accessories of maintenance work for various tube wells under malviya nagar area ( ac-43 ) . , lowering & lifting of sub / sets from bore by taking out double flanged gi pipes, submersible p / set, cable, cutting of rusted nuts and bolts etc and replacement of damaged d / f gi pipes, cable, defective pump set etc as per site requirement and lowering of sub p / set, sub cable, gi pipe etc as required, jointing of cable from sub p / set along with holding of cable with pipes and jointing of d / f pipes etc with nuts bolts and rubber packing etc. the job includes hiring of all t & p, tripod stand, chain pulley block and other material handling equipment’s, safety gadgets and required and consumable material ( rubber packing and nuts bolts ) will be arranged by the firm as per site requirement. the other material required during execution will be provided by department. up to the depth of 250 feet. approved rate djb code no 27.1.2 staff to be engaged in each shift.unskilled-04 nos., semi-skilled staff-02 nos.