Tender For Construction Of 33/11Kv S/S, Bamooliya Urban With Erectionof 33Kv Line At 33/11 Kv S/S 11Kv Line Interconnection At Location Bamooliya Under Aen(A-I) Jpd Baran On Labour Rate Of Arc-2023 Basis Under (24-25) In The Jurisdiction Of Baran Circle, Part-1: Erection of 33 KV line Bamooliya.Part-2: Construction of 33/11 KV Urban Grid Sub Station at Bambuliya, Urban in S/D Baran A-1.Part-3: Interconnection of 11 KV Line. Sl. No. Item Description 1 Part-1 2 Excavation of pit in hard soil which does not require blasting to erect various support and stay sets including stacking of excavated muck from the edge of excavation/pit 3 (A) Height of poles/R.S.Joist/M.S. Rail Size of pit 4 (B) Lattice Tower /Size of pit (for AB & AB1 STRUCTURE) 5 11.4/10.8 Mtr/ 1.5mx1.5m x1.80 m deep 6 (C)Stay set/Depth of pit 7 8x 3/4 -0.75x0.5x1.6 m 8 Safe carriage ofsteel(fabrication and unfabricated) I.e.M.S. Rails,R.s. joists,M.S. channels,M.S.Angles,M.S. Flat,G.I.Stay Sets ,G.I. Stay wire,G.I. wire Nuts and bolts etc. and ACSR Conductor including loading and unloading and stackingin Nigam Store /at work Site. 9 Within 10 Kms. 10 Safe Carriage of insulator,hardware,Cable etc. including loading / unloading and stackingin Nigam Store etc. 11 Within 10 Kms. 12 safe carriage of fabricated lattice tower structures and sub stationbstructures type AB, AB beams, isolaters structures etc. including loading/unloading and stacking in the nigam.stores/at work site 13 Within 10 Kms. 14 Erection of all type of steel supports in the excavated pit in alignment after checking the same with plumb line including fixing of cross arms and top hamper before erecting the supports. The support should be grouted and muffed in cement concrete of ratio 1:3:6 as per item No. 5.7 the remaining portion of the pit will be back filled with soil. The nuts & bolts will be provided by the contractor as per Nigams specification for which payment will be made at the prevailing store issue rates. The cost muffing and grouting will be paid extra. 15 Lattice Structure 16 Erection & fixing of G.I. Stay sets with anchor plates in excavated pit in required positions and back filling with soil with proper ramming.The work includes fixing of stay clamps,Stay insulators with stay wire at both ends with proper tention. Size of stay set/Stay wire. 17 8x3/4 with 7/8 SWG Stay wire 18 Providing and laying of cement concrete in ratio 1:3:6 using 43 grade cement river sand and 12 mm to 20 mm graded blast cruster broken in pit /foundation according to the size/type of supports/stay set including compaction/curing for 21 days in steel plates shuttering/ framer base. 19 Supplying and laying of randum rubble stone boulder having weight not less than 20 kgs.( Note:- If the stay required to be grouted in cement then the rates as indicated in this item will be applicable & paid in addition to above rates and the charges for back filling with soil will be deducted @ 10.00 per cum.) 20 Fixing and assembly of disc.point channel pair with pilot plates&clamps on erected double pole structure as per design. The nuts &bolts are to be provided by the contractor as per Nigams specification for which payment will be made as perprevailing Discom store issue rates. 21 Fixing of 11 KV B&S/T&C type disc insulator of 33 KV lines(each unit consiting of 3 nos. disc & 1 set of H/W ) on terminal point including fixing of hardware and strips. 22 Fixing of 33 KV pin insulatorswith pins 23 Assembly,Installation & commissioning of gang operated isolating switch on erected structurewith setting for accurate operation includingfixing of allied accessories completein all respect with post insulators and jumperingon both ends for connection with the system. The nuts and bolts will be supplied by the contractor for which payment will be made as per prevsilingDiscom store issue rates. 24 (A)G.O. switch with earthing blade. 25 33kv G.O.switch 26 Laying ,jointing , stringing, tensioning and clamping of conductor with proper sag as directed , using bolted type hardware including binding on pin insulators,jumpering on section points with binding wire / P.G.clamps.Aluminium jointing sleeves will be used for jointing the conductor.The line must stand at proper voltage on charging.The contractor will be provide P.G.clamps for which payment will be made as per prevailing Discom issue rate. 27 (A) IN URBAN AREA 28 ACSR DOG 29 Part-2 30 Levelling of ground 31 Levelling of ground up to 30 cm. to 90 cm depth. with tractor and T&P required as per condition of ground including removal of rubbish plantsfrom ground & marking of boundary with lime powder.(Including alllead & lifting) 32 Excavation of pit in hard soil which does not require blasting to erect various support and stay sets including stacking of excavated muck from the edge of excavation/pit 33 (A) Height of poles/R.S.Joist/M.S. Rail Size of pit 34 9 Mtr/ 1.2mx0.6mx1.50 m deep 35 (B) Lattice Tower /Size of pit (for AB & AB1 STRUCTURE) 36 11.4/10.8 Mtr/ 1.5mx1.5m x1.80 m deep 37 (C)Stay set/Depth of pit 38 8x 3/4 -0.75x0.5x1.6 m 39 Earth workexcavation and foundation of platfrom of transformers and brakers including dressing of sides and ramming of bottoms .Liftup to 1.5 Meter includingtaking out the excavated soil and depositing and refilling of jhiri, watering and ramming and disposal of surplus excavated soil as directed with in a lead of 50 Meter. 40 Hard /dense soil 41 Providing and laying cement concrete including compaction etc, complete using stone aggregate 40 mm nominal size (hand broken ) in foundation plinth excluding the cost of shuttering using 1 cement:5 sand:10 aggregate mix. 42 Note 43 The rates are all lead of cement,lime,ballast, sand,surkhi and grit etc.at site of work. 44 For all concrete work coarse sand shall be used no extrawill be paid . 45 Concrete mix prepared by power driven mechanical mixer shall be used . 46 Under exceptional coditions, where mechanical mixer and vibrator are not used(with the approval of Engineer Incharge reduced by 3% for mechanical mixer and 2% for Vibrator 47 Thickness of the cement concrete should not exceeed 100 mm. 48 Plaster on new surface on walls in cement ,sand mortar 1:6 including racking of joint etc. complete fine finsh 25 mm thick. 49 Note 50 The rates for complete work including racking of joints,curing,grinding,mixing and finishing T&P and scaffolding material and cost of material with all lead and lift. 51 The rates cover protection of all place and things,requiring protection and cleaing such places and thing of all droppings and splashes of mortar etc. 52 Masonryfor foundation and plinth 53 Randon Rubble stone masonry for foundation and plinth in cement sand mortar 1:6(1 Cement : 6 Sand) including labour charges. 54 Brick masonry for foundation and plinth in Cement sand mortar 1:6( 1 Cement : 6 Sand ) including labour charges. 55 Safe carriage of PCC poles including loading /un-loading 56 C) 9 Mtr. Long -400 kg 57 Within 10 Kms. 58 Safe carriage ofsteel(fabrication and unfabricated) I.e.M.S. Rails,R.s. joists,M.S. channels,M.S.Angles,M.S. Flat,G.I.Stay Sets ,G.I. Stay wire,G.I. wire Nuts and bolts etc. and ACSR Conductor including loading and unloading and stackingin Nigam Store /at work Site. 59 Within 10 Kms. 60 Safe Carriage of insulator,hardware,Cable etc. including loading / unloading and stackingin Nigam Store etc. 61 Within 10 Kms. 62 safe carriage of fabricated lattice tower structures and sub stationbstructures type AB, AB beams, isolaters structures etc. including loading/unloading and stacking in the nigam.stores/at work site 63 Within 10 Kms. 64 Safe carriage of 11/.4 KV 3 Phase distribution transformer including loading/unloading.from store to site (These charges will be 1.5 times for both sides ) 65 b)25 & 40 KVA 66 Within10 Kms. 67 Safe Carriage of 33/11 KV Power Transformer 68 b)5.0 MVA 69 Within 10 Kms 70 Safe carriage of breakers/kiosks etc. including loading/ unloading and stacking in Nigam stores 71 Within 10 KMs. 72 Erection & fixing of G.I. Stay sets with anchor plates in excavated pit in required positions and back filling with soil with proper ramming.The work includes fixing of stay clamps,Stay insulators with stay wire at both ends with proper tention. Size of stay set/Stay wire. 73 8x3/4 with 7/8 SWG Stay wire 74 Fixing of all type of fabricated material on erectedSupports with nuts & bolts as per approved design & drawing of sub-station. 75 Fixing of 11 KV B&S/T&C type disc insulator of 33 KV lines(each unit consiting of 3 nos. disc & 1 set of H/W ) on terminal point including fixing of hardware and strips. 76 Fixing of 11 KV pin insulatorswith pins 77 Assembly,Installation & commissioning of gang operated isolating switch on erected structurewith setting for accurate operation includingfixing of allied accessories completein all respect with post insulators and jumperingon both ends for connection with the system. The nuts and bolts will be supplied by the contractor for which payment will be made as per prevsilingDiscom store issue rates. 78 (A)G.O. switch with earthing blade. 79 33kv G.O.switch 80 (B) G.O. Switch without earthing blade 81 33 KV G.O. switch 82 11 KV G.O. switch 83 Assembly and installation of Horn Gap fuse set (set of 3nos)on erected structure as per design, complete in all respectwith post insulator includingjumperingonbothendsforconnection with the system. The nuts & bolts will be supplied by the contractorfor which payment will be made as per prevailing Discom store issue rates. 84 33kv Horn Gap fuse set. 85 11kv Horn Gap fuse set. 86 Installation testing as per Nigams norm & commissioning of 11/0.4KV distribution transformer on erected supports including fixing of steel structure set for sub-station as per requirment jumpering on HV&LV side, crimping of lugs/ clamping earth connections of body and neutral of transformer with wire /strip (as already provided with earthing ) complete in all respect. The PG clamps nuts & bolts will be supplied by the contractorforwhich payment will be made as perprevailing Discom store issue rates, 87 25 and 40 KVA 88 Drawing of overhead ABC conductor (Areal bunched cable)on existing erected pole/support including laying. Jointing,stringing complete in all respect. 89 1cX25 + 25 Sq mm 90 Earthing of 11/0.4 KV distribution transformer /sub-station with 3-pieces of M.S. Rod 20mm dia each 3 meter long and driving them into earth by mechanical means at a distance as per approved design & drawing & specification.The work includes flattening of top ends M.S. rod drilling a hole of 9/16 dia at flattened top and tightening of M.S. Flat 50x6mm (having 3 hole 2ends and 1mm middle ) with nuts and bolts with M.S.rods top end hole.The flat will also be welded with M.S.rod.The end will be connected to equipment as under in sequence. 91 Mesh earthing for 33/11 kv sub-station as per approved map &design usingMS flat 50X6mm/MS road 20mm dia includinglaying of flat/rod at the depth of 0.65 Mtrs.,welding & jointing at joints , structures & equipments etc.asunder: 92 Excavation of trench of 0.65Mtrs.depth and 0.5Mtr.width 93 Hard Soil 94 Laying of MS flat /MS rod in 0.65Mtr.deep excavated trench and welding of MS flat/rod continuosly with 100 mm overlaping for straight joint including coating of MS flat joints with molten bitumen and covering joint with bitumen impregnated tape to protect from rust. 95 Shaping of MS flat for connecting the equipments with earthmesh .The work includes the welding of MS flat with equipments/structure and also with earth mesh.The work also includescoating of MS flat joint with molten bitumen and covering jointwith bitumen impregnated tape to protect from rust. 96 Preparation of spikes made of M.S Rod of 20 mm dia and 3 Mtr.length as per design and requirment to be driven in earth by mechanical means and Providing & .fastening of suitable clampswith the M.S. Rod, connection of earth wire/stay wire/MS flat in clamp depending on type of soil: 97 Where drilling is not required 98 Filling of trench with available excavated muck in layers of 20cm (Max.)consolidating each deposited layer by ramming & watering with lead up to 50 Mtr, and lift up to 1.5 Mtr. 99 Painting of exposed portion of MS flat/rod with two coats of red-oxide primer and two coats of green enamel paint.including material. 100 Pipe Earthing for Power Transformer at 33 / 11 KV S/S:-Supply & erection of earthing electrode shall consist of G.I. Pipe 100 mm,of 3 Mtr Length. The electrode shall be buried as far as practicable3 meters below ground level. Wherever possible, earth electrodes shall be located as near the water tap, water drain or near down take pipe. Earth electrodes shall not be installed in proximity to a metal fence. It shall be kept clear of the buildings foundations and in no case it shall be nearer than 2 meters from the outer face of the wall. The electrode shall be surrounded withlayer of charcoal dust and salt mixture through out the length. The 100 mm GI pipe shall be provided with holes of 12 mm dia. drilled at 75 mm interval upto 2.5 meters length from bottom. The top of the pipe shall be provided with a G.I. threaded cap for watering the earth through a pipe. AClamp with Pati of 12 of M.S. Flat of size 50X6 mm shall be fixed (Bolted) on the top edge of the pipewhich in turn shall be connected to Neutral / Body of the Power Transformer through M.S. Flat size 50X6 mm. The G.I. cap over the GI pipe shall be housed in a masonry chamber, approximately 300 mm x 300 mm x 300 mm deep. The masonry chamber shall be provided with a RCC inspection cover resting over a RCC frame, embedded in masonry. 101 Erection ofsteel supports in the excavated pit in alignment after checking then same with plumb line as per approved design and drawing of 33/11KV Sub- station.The support should be grouted and muffed in cement concreteratio 1:3:6 as per chapter -5 code No.5.7.Theremaining portion of the pit will be back filled with soil.The charges for grouting & muffing will be paid by extra as per chapter code no 5.7 The nuts & bolts will be supplied by the contractorfor which payment will be made as per prevailing Store issue rates. 102 Fabricated structure AB type 103 Fabricated structure AB-1 type 104 Providing and laying of cement concrete in ratio 1:3:6 using 43 grade cement,river sand and 12 mm to 20 mm graded blast crusher broken in pit/foundation according to the size/type of supports/stay set including compaction/curing for 21days in steel plates shuttering /farmer base. 105 Supplying and laying of randum rubble stone boulder having weight not less than 20 kgs.( Note:- If the stay required to be grouted in cement then the rates as indicated in this item will be applicable & paid in addition to above rates and the charges for back filling with soil will be deducted @ 10.00 per cum.) 106 Erection of PCC poles in excavated pit in alignment after checking the same with plumb line as per approved design & drawing of 33/11kv sub-station.The pit should be back filled with the soil with proper ramming below 30cm ground level and then muffed above 15cm average ground level with cement concrete ratio1:3:6.The charges formuffing will bepaid extra as per chapter code no 5.7 The nuts & bolts will be supplied by the contractorfor which payment will be made at the prevailing store issue rates. 107 (A) IN URBAN AREA 108 PCC Poles 9 Mtr. Long 109 Laying / stringing of bus bar with ACSR Dog & jumper connection using tie rod ,33KV /11KV insulator strings,required hardware,P.G.clamps/T clamps etc.as per requirement including Y-connections at bus bar jumpering point as per the direction of engineer in-charge. 110 ACSR DOG/RABBIT 111 Erection of OCB/Kiosk/VCB complete with accessories including use of special tools & conducting all pre-commissioning test before energization,filling oil etc. complete in all respect with erection & grouting of structure (excluding civil works). The relays will be tested by Discom. 112 33 KV VCB (Outdoor ) 113 11 KV VCB (Outdoor ) 114 Laying, testing termination of control cable 1100 volts PVC insulated including supply and installation of ferrules to designate various cores of control cables by terminal Nos. of identification including utilization of cable gland. The control cable should be clearly arranged in trenches avoiding crossings including clamping of control cable at regular interval and providing identify tags. 115 2x2.5 Sq.mm. 116 Installation of metering points on 11 KV Out going feeder at 33/11 KV S/S. 117 The installation work to be carried out as perdrawing/design, under the supervision of concerned Assistant Engineer 118 (a) Mounting structure 119 The requisite steel members will be supplied by contractor including the hardware. Contractorshall joint/weld the members to form the mounting structure as per drawing. Necessary tools, welding, machines, lifting devices etc. shall be arranged by contractor. 120 (b) Civil works 121 Erection of lattices in alignment including excavation and concreting of structure foundation including cement, sand and grit 20 mm size (crusher broken) having ratio 1:3:6 and grit 40 mm size for ratio 1:5:10and curing for period as required (21 days). Area of concreting will be as per the drawing. 122 ( c ) Metering Equipments: 123 The requisite metering equipments (CTPT set, meter,meter box & suitable conductors for jumpers), will be provided by the concerned Assistant Engineer in healthy condition at site. The cables from CTPT set to meter box laid down in 50 mm GI pipe with suitable bends & nipples, shall be provided by contractoralongwith the consumable items such as PVC tapes, petroleum jelly etc. The cable should be PVC multi strand copper 4 core 2.5/4 Sq. mm ISI marked and firm & tight connections shall be made by suitable connectore.g. at CTPT sets by using clamps and atmeter/TTB by suitable lugs etc. The CTPT sets soinstalled shall be earthed by means of the MS Flat (size 50x6 mm) by joining it with the nearest earthing available at the sub-station. Requisite earthing materialshall be made available by the contractor. 124 (d) Meter: 125 Meters should be fixed firmly inside the tamper proof box, as per drawing. All the meter fixture will be provided by contractor including all consumables. 126 (e) Meter Box 127 The meter box shall be provided by the concernedAssistant Engineer. However, hardware or any other items required to fix the meter inside the meter box will be provided by contractor. The meter box will be fixed firmly with sufficient strength at a place as perdrawing. The test terminal block(TTB) link type shall be provided by contractor in the meter box. 128 (f) Painting: 129 All surfaces interior and exterior of lattice structure shall be white aluminum painted. 130 (g) Commissioning of Metering Equipments: 131 Installed meters inside the box and metering equipments duly mounted on the mounting structure will be powered up by connecting load in the presence of the concerned Assistant Engineer who will arrange the necessary shut down. Thecompletion certificate shall be furnised by contractor.be filled accordingly. Since the work involves higher A.C. voltage level, the contractor shall take full careregarding safety norms, so as to avoid any accidental hazards. 132 Fabrication of steel structures of M.S. angle ,M.S. channel & M.S. Flat including cutting, drillingand continunous welding joint as per design and drawing. 133 Other steel items 134 Laying of 11 KV, XLPE, Cable (Aluminium conductor) underground as per relevant IS/JVVNL standards including excavation of 30 cm x 120 cm deep trench in Kaccha land 25 cm thick under layer of sand. A class bricks covering refilling soil in the remaining(Including fixing of G.I.Pipe of required size at both end with 3 Mtr projected above the ground surface & 0.3 Mtr. below ground level) 135 b) 3x240 Sq mm to 3x400 Sq mm 136 Installation of cable termination / straight through joints on 11KV Aluminium conductor XLPE Cable with outdoor/ indoor termination end and /or straight through joint including required excavation / remoral/ fixing / refixing/ testing etc. as required 137 (A) Outdoor end Terminal (ii) 3x240 Sq mm to 3x400 Sq mm 138 Part-3 139 Conducting route survey as per approved route map and pegging of route with tee off point section point & double pole locations. 140 Excavation of pit in ordinary rock which does not require blasting/murrad to erect various supports and stay sets including stacking of excavated muck from the edge of excavation/pit. 141 (A) Height of poles/R.S. Joist/m.s.rail Size of pit 142 9 Mtr/ 1.2mx0.6mx1.50m deep 143 (B) Lattice TOWER /Size of Pit 144 11.4/10.8 Mtr/1.5m*1.80 m deep 145 ©Stay set/Depth of Pit 146 6x 5/8 -0.75x0.5x1.35 m 147 Safe carriage of PCC poles including loading /un-loading 148 C) 9 Mtr. Long -200 kg 149 Within 10 Kms. 150 Safe carriage ofsteel(fabrication and unfabricated) I.e.M.S. Rails,R.s. joists,M.S. channels,M.S.Angles,M.S. Flat,G.I.Stay Sets ,G.I. Stay wire,G.I. wire Nuts and bolts etc. and ACSR Conductor including loading and unloading and stackingin Nigam Store /at work Site. 151 Within 10 Kms. 152 Safe Carriage of insulator,hardware,Cable etc. including loading / unloading and stackingin Nigam Store etc. 153 Within 10 Kms. 154 safe carriage of fabricated lattice tower structures and sub stationbstructures type AB, AB beams, isolaters structures etc. including loading/unloading and stacking in the nigam.stores/at work site 155 Within 10 Kms. 156 Erection of all type of steel supports in the excavated pit in alignment after checking the same with plumb line including fixing of cross arms and top hamper before erecting the supports. The support should be grouted and muffed in cement concrete of ratio 1:3:6 as per item No. 5.7 the remaining portion of the pit will be back filled with soil. The nuts & bolts will be provided by the contractor as per Nigams specification for which payment will be made at the prevailing store issue rates. The cost muffing and grouting will be paid extra. 157 Lattice Structure 158 Erection of PCC poles in excavated pit with fixing of brackets,cross arms & top hampers as required in alignment after checking the same with plumb line. The support is to be back filled with soil with proper ramming. The nuts & bolts are to be provided by the contractor as per Nigams specification for which the payment will be made at the prevailing Discom store issue rates. 159 (A) IN URBAN AREA 160 PCC Poles 9 Mtr. Long (200Kg) 161 Erection &assembly of 2 Pole structures of steel supports or PCC poles in excavated pit in alignment after checking the same with plumb line.Including fixing of complete steel structure for line D.P.The support is to be back filled with soil with proper ramming.The nuts &bolts are to be provided by the contractor as per Nigams specfication for which the payment will be made at the prevailing Discom store issue rates. 162 PCC Poles 9 Mtr. Long(200 Kg.) 163 Erection & fixing of G.I. Stay sets with anchor plates in excavated pit in required positions and back filling with soil with proper ramming.The work includes fixing of stay clamps,Stay insulators with stay wire at both ends with proper tention. Size of stay set/Stay wire. 164 6x5/8 with 7/10 SWG Stay wire 165 Providing and laying of cement concrete in ratio 1:3:6 using 43 grade cement river sand and 12 mm to 20 mm graded blast cruster broken in pit /foundation according to the size/type of supports/stay set including compaction/curing for 21 days in steel plates shuttering/ framer base. 166 Supplying and laying of randum rubble stone boulder having weight not less than 20 kgs.( Note:- If the stay required to be grouted in cement then the rates as indicated in this item will be applicable & paid in addition to above rates and the charges for back filling with soil will be deducted @ 10.00 per cum.) 167 Fixing of 11 KV B&S/T&C type disc insulator of 11 KV lines(each unit consiting of 1 nos. disc & 1 set of H/W ) on terminal point including fixing of hardware and strips. 168 Fixing of 11 KV pin insulatorswith pins 169 Laying ,jointing , stringing, tensioning and clamping of conductor with proper sag as directed , using bolted type hardware including binding on pin insulators,jumpering on section points with binding wire / P.G.clamps.Aluminium jointing sleeves will be used for jointing the conductor.The line must stand at proper voltage on charging.The contractor will be provide P.G.clamps for which payment will be made as per prevailing Discom issue rate. 170 (A) IN URBAN AREA 171 ACSR WEASAL 172 Laying , jointing,stringing,tensioning and clamping of G.I.Earthwire continuosly on single/double pole by using earth clamps /nuts & bolts with washers and earth reel etc.including proper binding at each end.The nuts and bolts will be supplied by thecontractor for which payment will be made as per prevailing Discom store issue rates. 173 (A) IN URBEN AREA 174 G.I.Earth wire 6 SWG 175 Earthing of line for all type of supports as per REC construction standards using Stay wire/GI wire with onepcs.of M.S.rod 20mm dia each 3 meter long and driving into earth by mechanical means as per approved design.Drawing &specification.All material except MS rod,MS flat & stay wirewill be supplied by the contractor.If material is supplied by the contractor ,the payment will be made as per prevailing Discom store issue rates.(In case of PCC poles earthing must be connected with earthwire already available on PCC pole at bottom)
