Construction of Tube Well along with Water Tank at Lethpora.

Amount

Drilling of the hand pump well by air rotary drilling rig unit suitable for lowering MS casing of 125mm diameter in suitably drilled bore hole as per specifications laid down in IS 2800 (Part-I) with upto date amendments. The job is to be done in all kinds of soils, boulder, rocks, collapsible strata, saturated soils, artisan conditions by ODEX/DTH attachments including the cost of all consumables like fuel, lubricants and other accessories complete in all respects whole in consolidated/semi-consolidated/ boulder formation upto desired depth. The job also includes the cost of pipe materials (MS 125mm) and lowering of casing assembly and its subsequent welding after every 10 feet upto the drilled/desired depth. The casing is to be slotted as per the site requirement. The job includes following activities and the items Collection of soil samples Power supply arrangement required during drilling etc. P/F of well cap as per IS code 2800 with latest/upto date amendments till the bore hole well is hammered. Recording the strata details in the drilling job card. Development of tube well with backwash method with air compressor of minimum capacity 1000 CFM (300 PSI air delivery system) with suitable arrangements till well is thoroughly developed in all respects as per the directions of site engineer.

Providing, fitting, installation and commissioning of 01 HP solar based water pumping unit all other allied accessories like HDPE tank, solar panel etc. having following specifications: 1. Light weight stainless steel pump and body submersible pump as per the guidelines issued by Department of MNRE 2. Suitable for bore of min 125mm dia. 3. Pump and motor construction: SS-304 4. Outer dia. Should not be more than 100mm 5. Discharge dia of the pump should be 25-32mm 6. Dry run protection 7. Over and under voltage protection 8. Overload protection 9. Over temperature protection Solar pump controller specifications: 1. Having MPPT function which can optimize the performance of the pump 2. Having DC-AC VFD suitable for inputs from the photo voltaic arrays 3. Having certified IP 54 enclosure having DC switches and surge suppressor. 4. Compiles with requirements of international standards like IEC 61683 ad IEC 60058-2 as well as MNRE guidelines. PV Modules specifications: The PV module shall contain mono/multi crystalline silicon solar cells: Power of a single module :330 W ± 5% Open circuit voltage: 44-46V Voltage at max. power : 35-38 V Current at max. power : 8-9 A Series fuse ratings : 20A Application class ratings: Class A Fire ratings: Class-C The PV module shall be as per IEC 61215 revised specifications. Installation Depth of submersible pump: 30-60 mtrs Total head of the pump: 50-80 mtrs Daily yield of the solar pump: 25000-30000 LPD @ 8hrs/day Providing and fitting of Power cable: 2-core×2.5 sq mm cable as per IS694 as required (Havells/Polycab/Standard Make) PVC pipe ¾ inch for covering cable for concealment as required A good MCCB (Havells/L&T/Standard make) is to be provided between the solar cells and the controller. Providing and fitting of Protection devices: Adequate protection shall be incorporated against dry operation of motor pump set, protection against lightening, hails and storms. Full protection against open circuit, accidental short circuit and reverse polarity is provided. A good reliable MCB (Havells, L&T, standard make) is to be provided with the motor pump set. Sufficient size and length of cable should be provided for interconnection between the PV array and the motor pump set. Providing and fitting of Steel Structure: Hot dip galvanized steel structure (size 5050×4.8mm) designed to cater to min 150 Km/hr wind speed and/or to bear the weight of min 1m high snow on solid foundation made of reinforced cement concrete being enough to hold the weight of structure (to be developed separately. Height of the panelholding structure upto 10 ft from the surface of the foundation block. Running length of ISA to be used for structure specified above should not be less than 150 ft. Providing and fitting of HDPE Tank: 5000 ltr HDPE (double insulated) water storage tank to be kept on concrete structure constructed, laying and fixing of rising main of 25m dia pipes with all fitting including all materials, labours and T&P etc. required for proper completion of work. Outlet with 03 No taps to be provided for use of water by the public. Providing and fitting of Lightening arrestor and earthing: Lightening arrestor kit has to be installed should be electrode based with proper chemical mixing. Also proper earthing has to be provided at the pump controller enclosure. Warranty: Make: Grundfos or equivalent NOTE: 1. The PV module shall be warranted for a minimum period of 10 yrs from the date of supply and the complete solar pumping system will be warranted for minimum period of five years from the date of installation. 2. Required spares for trouble free operation during the warranty period shall have to be supplied by the firm free of cost. All the components of the solar system shall have to be covered under comprehensive maintenance contract (CMC) for 5 years, the cost of which is included.

Civil Works for Platform as enunciated below.

Earth work in excavation by manual means in trenches for foundation, drains pipes, cables etc. not exceeding 1.5 m width and for shafts, wells cesspits and like not exceeding 10 sqm on plan, depth upto 1.5m including disposal of excavated earth upto 1m from cutting edge, disposed earth to be leveled and neatly dressed in all kinds of soil.

Providing and laying of boulder fittings of size upto 225mm laid in layers and then packing and ramming. The job includes cost of carriage by mechanical means or by manual labour up-to actual site of work with all leads and lifts.

Providing and laying in position the specified grade cement concrete excluding shuttering. All work up-to plith level in M7.5 mix (1:4:8)

Providing and laying in position cement concrete in M15 mix of specified grade including the cost of centering and shuttering

M/S AH TUBE WELLS