SPECIAL REPAIRS TO REPLACEMENT OF BOREWEL AGAINST BER AT PUMP HOUSE NO. 8 IN JORHAT MIL STATION JOB NO 41SASRMES052023-24 UNDER GE JORHAT

Amount

Mobilisation of accessories/ tools/ plants/ equipment as per IS 2800: 2019 for construction of borewell of 550 mm dia bore hole using Rotary Drilling Method (Direct Circulation Method) with all minor accessories at site complete all as specified and directed. Note: The quoted rate shall be inclusive of shifting the accessories/ tools/ plants/ equipment from one site to other for subsequent boring.

Drilling pilot bore hole of 250 mm dia by Reverse Rotary Drilling Method as described in IS 2800: 2019 in any kind of soil strata including hard stone/ boulder upto 120 metre depth and beyond 60 metre depth below ground level, including compound/ powder like valmite, bentonite solution, local silty clay etc. to be required as per the site condition including collecting samples from different strata, preparing and submitting strata chart/ bore log, complete all as specified and directed.

Drilling pilot bore hole of 250 mm dia by Reverse Rotary Drilling Method as described in IS 2800: 2019 in any kind of soil strata including hard stone/ boulder beyond 120 metre depth below ground level, including compound/ powder like valmite, bentonite solution, local silty clay etc. to be required as per the site condition including collecting samples from different strata, preparing and submitting strata chart/ bore log all complete all as specified and directed.

Resistivity variation studies in bore hole drilled by electric logging of pilot bores by expert of Geology division to know the potential and temperature probes of drinking water by approved agency duly collaborated with strata chart/ bore log, complete all as specified and as directed.

Reaming 250 mm dia pilot bore to 550 mm dia bore upto 60 metre depth below ground level, complete all as specified and as directed.

Reaming 250 mm dia pilot bore to 550 mm dia bore upto 120 metre depth and beyond 60 metre depth below ground level, complete all as specified and directed.

Reaming 250 mm dia pilot bore to 550 mm dia bore beyond 120 metre depth below ground level, complete all as specified and directed.

Supply, assembling, jointing and lowering PVC casing pipe (CM) for water wells, plain ended, 250 mm nominal bore of pipe, min 12.5 mm wall thickness, unplasticized type, PVC pipe conforming to IS 12818 : 2010 and fixed in position in different depth as directed, with male and female threads allowing to be fitted with other pipe in well, complete all as specified and as directed.

Supply, assembling, jointing and lowering PVC casing pipe (CM) for water wells, plain ended, 150 mm nominal bore of pipe, min 7.5 mm wall thickness, unplasticized type, PVC pipe conforming to IS 12818 : 2010 and fixed in position in different depth as directed, with male and female threads allowing to be fitted with other pipe in well, complete all as specified and directed.

Supply, assembling, jointing and lowering, PVC ribbed filter screen pipe for water wells, 150 mm nominal bore of pipe, min 9.5 mm wall thickness, unplasticized type, PVC pipe conforming to IS 12818 : 2010 and fixed in position in different depth as directed, with male and female threads allowing to be fitted with other pipe in well, complete all as specified and directed.

Supply and fix for, reducer, 150 mm X 250 mm size, made of material as per IS 4270: 2001, conforming to IS 2800: 2019, complete all as specified and as directed.

Development of tube well in accordance with IS 2800: 2019 and IS:11189 with compressed air method (open well method), to establish maximum rate of usable water yield without sand content (beyond permissible limit), with required capacity air compressor, running the compressor for required time till well is fully developed, measuring yield of well by “V” notch method or any other approved method, measuring static level and draw down etc. by step draw down method, collecting water samples and getting tested in approved laboratory, including disinfection of tube well, all complete, including hire and labour charges of air compressor, tools and accessories etc., all as per requirement, complete all as specified and directed.

Material and labour for, yield testing of tube well by continuous run with suitable equipment all as per IS-2800 part-II of 1979 including complete testing of water suitable for drinking purpose as per IS-10500 of 1991 from DRL (Defence Research Lab) testing Laboratory approved by GE and report shall be submitted to GE. The well shall be tested 24 hours continuous after development of the well to ascertain the yield. The air compressure/ higher capacity pump required for the development of the well by means of over pumping shall be arranged by the contractor at his own arrangement without claiming any extra payment from the Deptt.

Supply and lowering of column pipe 80 mm bore both end flanged made out of GI tubing, medium grade, welded at end of column pipe cutting of groove to house submersible cable 3 core length of each column pipe, complete all as specified and as directed.

Supply and fix for, clamp for column pipe, made of flat iron of hot rolled medium and high tensile structural steel of grade E 250 quality C conforming to IS 2062: 2011 and as per IS 2800: 2019 including necessary bolts and nuts of required size, complete all as specified and directed.

Supplying, designing, packing gravel (hard, insoluble and roughly rounded) of particle size ranges (2 mm to 3.35 mm, 3.35 mm to 4.75 mm, 4.75 mm to 6.3 mm, 6.3 mm to 8 mm, 8 mm to 12.5 mm) to the tube well in accordance with IS: 4097 as per the site requirement, complete all as specified and directed.

Supply and fix for, well cap to the top of bore well, made of flat iron of hot rolled medium and high tensile structural steel of grade E 250 quality C conforming to IS 2062: 2011 and as per IS 2800: 2019 including necessary bolts and nuts of required size, complete all as specified and directed.

Carrying out testing of water sample of untreated water for all parameters mentioned in Table 1 to Table 6 of IS 10500: 2012 from NEIST Jorhat/ DRL Tezpur or any approved Lab as approved by the GE, complete all as specified and directed.

Disinfection of bore well as per IS 2800: 2019 using 200 milligrams of powdered chlorine compound per litre of water present in the well and left in the well for at least 8-12 hours to ensure elimination of any bacteria, complete all as specified and directed.

Supply and fix for, mild steel chain made of 6 mm dia rod of size 20 mm X 38 mm for holding submersible pump set/ column pipe including pipe including necessary holding mild steel clamp nuts, bolts etc., complete all as specified and directed.

Supply and laying or fixing or passing through pipe PVC insulated cable for working voltages of 1100 volts, PVC sheathed, 3 core, nominal cross sectional area of main conductor 6 sqmm, solid aluminium conductor, ISI marked as per IS 1554(Part-I): 1988 including cable glands, lugs etc. to suit the cable size in service connections, complete all as specified and directed.

Supply, installation, testing and commissioning of stainless steel 12.5 HP submersible pump, electric driven 415 volts, TP suitable for 250 mm dia bore well ( Casing pipe size 250 mm), flow rate 600 -1800 litres/min, head range 22-49 metre, complete all as specified and directed. Make :Crompton

Supply and fix for, bail plug/ bottom plug with hook, 150 mm size, made of PVC, complete all as specified and directed.

Supplying, laying , jointing, testing and commissioning PVC insulated cable for working voltages of 1100 V, PVC sheathed, armoured, 3 core with reduced neutral conductors (3½ core), nominal cross sectional area of main conductor 25 sqmm, stranded aluminium conductor, ISI marked as per IS 7098(Part-I): 1988 including cable glands, lugs etc. to suit the cable size and to be laid in trenches, fixed along pole, under floors, through GI pipe laid under floors/roads, through concealed GI pipe along wall etc. complete all as specified and as directed.

Material and labour for construction of brick masonry valve pit chamber of size 60cm x 60cm x 60cm depth (internal dimension) with sub class 'B' brick, old size brick with one brick thick wall in CM (1:4) on 100 mm thick PCC (1:4:8) type D2 (using 40mm graded stone crushed aggregate) as in foundation, 15mm thick rendering cement plaster in CM (1:4) internally and externally up to 150 mm below ground level, provision of valve pit cover made out of 4mm thick MS plate welded with 40 x 5mm thick FI frame all round including provision of hinges, handle, locking arrangement, ISA 40 x 40 x 5mm thick frame, fixed on top of valve pit by means of hold fast 150mm long, embedded in PCC (1:2:4) type B1 (Block size 230 x 200 x 100mm) and applying two coats of synthetic enamel paint over a coat of red oxide zinc chrome primer to all steel surfaces and three coats of white wash on all plastered surfaces of valve chambers including preparation of surfaces, necessary earth work in soft/ loose soil, complete all as specified and as directed.

Material and labour for, earthing complete with galvanised steel earth plate electrode 600mm x 600mm x 6mm thick buried directly in ground vertically to a depth not less than 2.25 meter deep below ground level with top edge earth plate at a depth not less than 1.50 metre below normal ground level connected to galvanised steel earth lead strip 32 x 6mm by means of bolts, nuts, check nuts and washers of galvanised steel and connected to main switch board or main control board as directed and including provision of concrete earth pit in PCC (1:3:6) type C1, 50mm thick pre-cast RCC (1:2:4) type B1 (using 20mm graded crushed stone aggregate) cover slab (Reinforced with 8mm dia TMT bar @15cm centre to centre bothways and suitable handle made of 10mm dia), provision of funnel, wire mesh, 20mm bore galvanised steel tubing (medium grade) for watering, charcoal or coke and salt in alternate layers of 15cm (compacted thickness), 40mm bore galvanised steel tubing (light grade) for protection of earth lead connection, necessary excavation and earth work in any type of soil complete all as specified and indicated on electrical plate No.3 of SSR Part-I (2009) including testing on completion. (Note: GI earth wire and protection pipe upto 7.5metres shall be deemed to be included in the unit quoted rate).

Material and labour for, hard surface cutting as in PCC, foundation, pavement, etc. for laying of cables, pipe etc of any size up to a approximate width 30 cm and depth 15 cm and making good to surfaces with PCC (1:3:6) type C2 (40mm graded crushed stone aggregate), complete after laying of cable, pipe or repair of foundation etc., complete all as specified and directd.

Supply ,installation, testing and commissioning of factory made LT panel outdoor type (CPRI approved) of suitable size to accomodate all compartment and MCCBs, fabricated with 3.15 mm thick CRCA sheet steel front openable vertical cubical type, installed over wall suitablily grouted by fastnuts, etc. with 300 Amp Aluminium bus bar, phase indicator lamps and internal wiring including the following accessories: - (a) INCOMING: (i) MCCB 50 Amps, 4 pole, 415 V, 30 kA - 1 No. Make L & T, Cat No. CM90518OOGO (ii) Digital multifunction meter - 1No make L & T, Cat No. 4410 series, Cat No. WL404010OOOO (iii) LED phase indicator lamp (RYB) - 1 Set (b) OUTGOING: (i) MCCB 50 Amps, 3 pole, 415 V, 18 kA make Havells, Cat No. CM90517OOGO (ii) MCB 6-32 Amps, 2 pole, 10 kA - 02 Nos Make L & T, Cat No. BB20320C (iii) Automatic Star delta Starter and Motor Protection Relay, make L& T, Cat No. MPR 300- 01 Nos (iv) Spare compartment - 02 Nos.

Supply and fix for, centralizer (centring guides), made of flat iron and bar of hot rolled medium and high tensile structural steel of grade E 250 quality C conforming to IS 2062: 2011 and as per IS:2800 (Part 1): 1991 including necessary bolts & nuts and welding of required size, complete all as specified and directed.

Material and labour for, rising stem type CI sluice valves (ISI marked) having double flanged SS spindle for connections of nominal pressure (PN 1.6) as per IS 14846: 2000 (Reaffirmed 2010) of preferred materials, nominal size 100 mm including nuts, bolts, packing sheets, a pair of rubber gasket ISI marked, complete all as specified and directed.

Material and labour for, rising stem type CI sluice valves (ISI marked) having double flanged SS spindle for connections of nominal pressure (PN 1.6) as per IS 14846: 2000 (Reaffirmed 2010) of preferred materials, nominal size 80 mm dia including nuts, bolts, packing sheets, a pair of rubber gasket ISI marked, complete all as specified and directed.

Material and labour for, flanged reflux valves (ISI marked) of single door, swing check type (non return valves) of nominal pressure (PN 1.6) as per IS 5312 (Part 1): 2004, nominal size 80 mm including nuts, bolts, packing sheets etc., complete all as specified and directed.

Material and labour for, flanged reflux valves (ISI marked) of single door, swing check type (non return valves) of nominal pressure (PN 1.6) as per IS 5312 (Part 1): 2004, nominal size 100 mm dia including nuts, bolts, packing sheets etc., complete all as specified and as directed.

Supply and laying in trenches, 80 mm nominal bore, medium grade, galvanised coated steel tube conforming to IS 1239 (Part-1): 2004 including all fittings conforming to IS 1239 (Part-2): 2011, complete all as specified and directed.

Excavation in trenches, not exc. 1.5 m wide and not exc. 1.5 m in depth; for foundation, etc. or for shafts, wells, cesspits, manholes, pier holes, locating the fault of UG cable/ pole foundation/ laying pipe, cable, stays etc. n exc 10 sqm on plan and not exc. 1.5 m in depth and getting out in soft/ loose soil, complete all as specified and directed.

Returning filling in soft/ loose soil, including spreading, levelling, watering and well ramming in layers not exc. 25 cm, complete all as specified and directed.

Removing excavated soils to a distance not exceeding 50 metres and depositing where directed at a level not exc. 1.5 m above the starting point, complete all as specified and directed.

Material and labour for, sand cushioning (dry) in trenches for protection of UG cables (below, above and around the UG cable laid in trenches) of 230mm spread thickness and consolidated (punned) upto 180mm thickness, complete all as specified and directed. (NOTE : For the purpose of payment, punned thickness of sand cushioning only shall be measured and paid for).

Material and labour for, sub class 'B' brick, well burnt, old size, flat, laid breadth-wise along the axis of cable laid in trenches over sand cushion laid for UG cable protection, complete all as specified and directed.

M/S D J ENTERPRISE (BID ID -3493939)

M/S DILIP GOSWAMI (BID ID -3493923)