Survey and Refurbishment of Borewells in H and K Wards under AE Maint WWWS South Division

Survey and Refurbishment of Borewells in H & K Wards under A.E. (Maint) W.W.W.S. South Division

Dismantling of the existing borewell assembly, including removal of all mechanical, electrical, and piping components; inspection and documentation of physical condition and preparation of a detailed conditional assessment report as per the attached technical specifications.

Carrying out the survey to determine the internal diameter, total depth, static water level and casing details of the existing borewells using suitable equipment and methods, as per the attached technical specifications.

Conducting a discharge test to measure the yield (litres per minute/hour) of each borewell by standard pumping test procedures and recording results as per the attached technical specifications.

Collection of water samples from each borewell and testing for physical, chemical, and bacteriological parameters through a NABL-approved laboratory, in accordance with the attached technical specifications.

Conducting hydrogeological assessment including site characterization, groundwater level monitoring, recharge potential and sustainability evaluation as per the attached technical specifications.

Preparation of GPS coordinates and digital mapping of each borewell location, assigning a unique identification code, and submission of location data in GIS-compatible format as per the attached technical specifications.

Supply and installation of new head assembly suitable for the existing borewell model, including all necessary hardware and alignment adjustments.

Replacement of worn-out handle assembly with new unit, including provision of bolts, nuts, and bearings as required for smooth operation.

Supply and installation of new cylinder assembly of suitable size and make, ensuring compatibility with existing system.

Replacement of existing chain assembly with new galvanised chain of equivalent specification to restore smooth functionality.

Supply and installation of new bearing (Type 6204) with proper seating, lubrication, and alignment.

Replacement of connecting rod with 12 mm diameter galvanised steel rod, properly threaded, aligned, and fastened with nuts and washers.

Supply and fixing of galvanised mild steel bolts of size 12 mm diameter and 35 mm length with corresponding nuts and washers.

Supply and fixing of galvanised mild steel bolts of size 9 mm diameter and 40 mm length with corresponding nuts and washers.

Supply and replacement of 80 mm diameter cylindrical upper valve, ensuring leak-proof fitting and smooth operation.

Supply and replacement of 150 mm internal diameter upper valve with compatible components as per technical requirements.

Supply and fixing of galvanised iron delivery pipes of 32 mm diameter and 3 metres length each with proper threading, coupling and sealing.

Overhauling of the electrical starter panel including cleaning, rewiring, replacement of damaged switches, MCBs, and terminals to ensure safe and reliable operation.

Supply & Installation of suitable Mutli stage Submersible water pump of approved make having proporationate discharge of borewell yield

Supply and installation of 2000 litre capacity PVC overhead water storage tank on an existing or new platform including necessary fittings, supports and connection works.

Execution of all related civil works including foundation, platform repair, chamber construction, grouting, masonry, and finishing as required for proper installation and operation of the borewell system