Construction of New 33 KV Sub Station at Ketu Hama Erection of 33 KV Line 4.5 Km SC with ACSR Dog conductor Erection of 11 KV Inter Connection 2.8 Km from 33 KV GSS Ketu Hama under AEN Sekhala on LRC 2025

PART 'A" Construction of New 33/11 KV Sub Station at Ketu Hama under O&M, Sub-Division Sekhala

Levelling of ground

Levelling of ground up to 30 cm.depth. with tractor and T&P required as per condition of ground including removal of rubbish plants from ground & marking of boundary with lime powder.(Including all lead & lifting)

Excavation of pit in ordinary rock which does not require blasting/murrad (In Jodhpur Discom) to erect various supports and stay sets including stacking of excavated muck from the edge of excavation/pit.

(A) Height of poles/R.S.Joist/M.S. Rail Size of pit

8 Mtr/R.S.Joist/M.S. Rail 1.2mx0.6mx1.35 m deep

9 Mtr/ 1.2mx0.6mx1.50 m deep

Earth work excavation and foundation of platfrom of transformers and brakers including dressing of sides and ramming of bottoms .Liftup to 1.5 Meter including taking 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.

Hard soil mixed with boulders

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.

Plaster on new surface on walls in cement ,sand mortar 1:6 including racking of joint etc. complete fine finsh 25 mm thick.

Cement concrete flooring grade 1:2:4 (1-cement :2- coarse sand :4-graded stone aggregate ) rounding off edges etc.but excluding cost of nosing of steps etc. complete

75 mm thick with 20 mm thick nominal size aggregate.

Masonry for foundation and plinth

Randon Rubble stone masonry for foundation and plinth in cement sand mortar 1:6(1 Cement : 6 Sand) including labour charges.

Safe carriage of PCC poles including loading / un-loading

a) 9 Mtr. Long-400 Kg /11 Mtr. PCC pole

With in 10 KM

b) 9 Mtr. Long PCC pole

With in 10 KM

Safe carriage of steel( fabricated 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 Nut & Bolts etc. and ACSR Conductor including loading and unloading and stacking in Nigam store /at work site

With in10 KM

Safe Carriage of insulator, hardware, cable etc.including loading/unloading and stacking in Nigam.stores etc.

With in10 KM

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 )

With in10 KM

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.

Fixing of all type of fabricated material on erected supports with nut & bolts as per approved design & drawing of sub-station.

Fixing of 11kv B&S/T&C type disc insulator for 33kv lines (each unit consiting of 3 nos .disc.& 1set of H/W) on terminal point including fixing of hardware andstrips.

Fixing of 33kv pin insulator with pins.

Assembly. Installation & commissioning of gang operated isolating switch on erected structure with setting for accurate operation including fixing of allied accessories completein all respect with post insulator and jumpering on 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 prevailing Discom store issue rates.

(B)G.O. switch . without earthing blade.

33kv G.O.switch

11kv G.O.switch

Assembly and installation of Horn Gap fuse set (set of 3nos)on erected structure as per design, complete in all respectwith post insulator including jumpering on both ends for connection with the system. The nuts & bolts will be supplied by the contractor for which payment will be made as per prevailing Discom store issue rates.

33 kv Horn Gap fuse set.

11 kv Horn Gap fuse set.

Installation of lightening arrestors on erected structure /support (set of 3 nos) including connection with earth by wire /strip as required and jumpering etc. The nuts & boltswill be supplied by the contractor for which payment will be made as per prevailing Discom store issue rates,

(A)sub-station type

33 KV L.A. set

11 KV L.A. set

Installation testing as per Nigams norm & commissioning of 11/0.4KV distribution transformer on erected supports including fixing of base channels 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 contractor for which payment will be made as per prevailing Discom store issue rates,

25 and 40 KVA

Fixing of PG clamp of Dog /Racoon Conductor

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:

Excavation of trench of 0.65Mtrs.depth and 0.5Mtr.width

Normal Soil

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.

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 includes coating of MS flat joint with molten bitumen and covering jointwith bitumen impregnated tape to protect from rust.

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:

Where drilling is not required

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.

Painting of exposed portion of MS flat/rod with two coats of red-oxide primer and two coats of green enamel paint.including material.

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.

Digging of 10.5 ft. deep pit of 4 ' dia ( approx 132 cu.ft)

Supply of 2" G.I pipe with cap(including fabrication of 30 holes in the periphery of pipe)

Making chamber for water pouring including cast iron manhole cover

Supply cost of 200 kg bentonite compound with making slurry

Supply of black cotton soil approx 80 cu.ft.

Connecting electrode with Mesh Earthing

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 for muffing will be paid extra as per chapter code no 5.7 The nuts & bolts will be supplied by the contractor for which payment will be made at the prevailing store issue rates.

(B) IN RURAL AREA

PCC Poles 9 Mtr. Long

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 Yconnections at bus bar jumpering point as per the direction of engineer in-charge.

ACSR DOG/RABBIT

Painting with priming coats or ready mixed red-oxide paint 2 coats of approved make on steel works after cleaning with wire brush / sand paper.(including cost of red oxide)

On new surface

Painting with aluminium paint of approved brand and manufacturer to give an even surface.(including cost aluminium paint)

On new works with two coats.

Fabrication of steel structures of M.S angle ,M.S.channel & M.S.Flat including cutting ,drilling and continunous welding joint as per design and drawing.

Other steel items

Supplyof M.S. Nuts and bolts 5/8 inch dia assorted size.

PART "B" Erection of 33 KV Line for Connection new Sub Station at Hapasar under O&M, Sub-Division Sekhala

Conducting route survey as per approved route map and pegging of route with section point/ double pole location.

Trimming of tree branches/plants and preparing route approchases for proposed line.

Excavation of pit in Hard Soil

(A) Height of poles/R.S.Joist/M.S. Rail Size of pit

9 Mtr/ 1.2mx0.6mx1.50 m deep

(B) Lattice Tower /Size of pit

11.4/10.8 Mtr/ 1.5mx1.5m x1.80 m deep

(C)Stay set/Depth of pit

Safe carriage of PCC poles including loading / un-loading

a) 9 Mtr. Long-400 Kg /11 Mtr. PCC pole

With in 10 KM

Safe carriage of steel( fabricated 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 Nut & Bolts etc. and ACSR Conductor including loading and unloading and stacking in Nigam store /at work site

With in10 KM

Safe Carriage of insulator, hardware, cable etc.including loading/unloading and stacking in Nigam.stores etc.

With in10 KM

Safe carriage of fabricated lattice towers structures and sub-station structures type AB, AB beams, isolators structures etc. including loading/unloading and stacking in the Nigam. Stores / at work site.

With in10 KM

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 Nigam's specification for which payment will be made at the prevailing store issue rates. The cost muffing and grouting will be paid extra.

Lattice Structure

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 Nigam's specification for which the payment will be made at the prevailing Discom store issue rates.

(B) IN RURAL AREA

PCC Poles 9 Mtr. Long (400 Kg)

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.

PCC Poles 9 Mtr. Long(400 Kg.)/11Mtr.long

Erection & fixing of G.I.Stay sets with anchor plates in excavated pit in required position and back filling with soil with proper ramming.The work includes fixing of stay clamps.Stay insulator with stay wire at both ends with proper tension.Size of stay set/stay wire.

8'x3/4" with 7/8 SWG stay wire

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.

Fixing of all type of fabricated material on erected supports with nut & bolts as per approved design & drawing of sub-station.

Fixing of 11kv B&S/T&C type disc insulator for 33kv lines (each unit consiting of 3 nos .disc.& 1set of H/W) on terminal point including fixing of hardware andstrips.

Fixing of 11kv B&S/T&C type disc insulator of 11kv lines (each unit consiting of 1nos.disc.& 1set of H/W) on terminal point including fixing of hardware and strips.

Fixing of 33kv pin insulator with pins.

Fixing of PG clamp of Dog /Racoon Conductor

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.

(B) IN RURAL AREA

ACSR DOG

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 the contractor for which payment will be made as per prevailing Discom store issue rates.

(B) IN RURAL AREA

G.I.Earth wire 6 SWG

Earthing of line for all type of supports as per REC construction standards using Stay wire/GI wire with one pcs.of M.S.rod20mm 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 Discomstore issue rates.(In case of PCC poles earthing must be connected with earthwire already available on PCC pole at bottom)

Painting with priming coats or ready mixed red-oxide paint 2 coats of approved make on steel works after cleaning with wire brush / sand paper.(including cost of red oxide)

On new surface

Painting with aluminium paint of approved brand and manufacturer to give an even surface.(including cost aluminium paint)

On new works with two coats.

Fabrication of steel structures of M.S angle ,M.S.channel & M.S.Flat including cutting ,drilling and continunous welding joint as per design and drawing.

Other steel items

Supplyof M.S. Nuts and bolts 5/8 inch dia assorted size.

Part 'C' Erection of 11 KV Inter Connection from 33/11 KV GSS Hapasar under O&M, Sub-Division Sekhala

Conducting route survey as per approved route map and pegging of route with section point/ double pole location.

Trimming of tree branches/plants and preparing route approchases for proposed line.

Excavation of pit in ordinary rock which does not require blasting/murrad (In Jodhpur Discom) to erect various supports and stay sets including stacking of excavated muck from the edge of excavation/pit.

(A) Height of poles/R.S.Joist/M.S. Rail Size of pit

9 Mtr/ 1.2mx0.6mx1.50 m deep

(C)Stay set/Depth of pit

Safe carriage of PCC poles including loading / un-loading

a) 9 Mtr. Long-200 Kg /11 Mtr. PCC pole

With in 10 KM

Safe carriage of steel( fabricated 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 Nut & Bolts etc. and ACSR Conductor including loading and unloading and stacking in Nigam store /at work site

With in10 KM

Safe Carriage of insulator, hardware, cable etc.including loading/unloading and stacking in Nigam.stores etc.

With in10 KM

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 Nigam's specification for which the payment will be made at the prevailing Discom store issue rates.

(B) IN RURAL AREA

PCC Poles 9 Mtr. Long (200 Kg)

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 Nigam specification for which the payment will be made at the prevailing Discom store issue rates

PCC Poles 9 Mtr Long (200 Kg.)

Erection & fixing of G.I.Stay sets with anchor plates in excavated pit in required position and back filling with soil with proper ramming.The work includes fixing of stay clamps.Stay insulator with stay wire at both ends with proper tension.Size of stay set/stay wire.

6'x5/8" with 7/10 SWG stay wire

Fixing of all type of fabricated material on erected supports with nut & bolts as per approved design & drawing of sub-station.

Fixing of 11kv B&S/T&C type disc insulator of 11kv lines (each unit consiting of 1nos.disc.& 1set of H/W) on terminal point including fixing of hardware and strips.

Fixing of 11 kv pin insulator with pins.

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.

(B) IN RURAL AREA

ACSR RABBIT CONDUCTOR

Earthing of line for all type of supports as per REC construction standards using Stay wire/GI wire with one pcs.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)

Fabrication of steel structures of M.S angle ,M.S.channel & M.S.Flat including cutting ,drilling and continunous welding joint as per design and drawing.

Other steel items

Fixing of M.S. Nuts and bolts 5/8 inch dia assorted size.

Note-1.Dismentaling, if any: Dismentaling charges for all the items will be 60% of item rates of erection charges. However, charges for transportation of the material from works site in the Nigam/sub division store shall be paid as item rate of that material(Chapter-III, Transportation of material). The payment will be made after issuance of certificate by Engineer In Charge that all the dismentaled material has been safely received in the Nigam/sub division store Note-2. The nut & bolts will be provided/supplied by the contractor which will confirm to relevant ISS & payment will be made as per prevailing Discom store issue rate. Note-3. The quality of material supplied by the contractor be got checked & approved by the circle SE. Note-4. In case of pole upper end of the GI wire provided for earthing shall be bolted with cross arm. Note-5. The qty mentioned for normal soil/ordinary rock. Hard soil which does not required drilling and Hard Rock/ CC road which required drilling are tentative & shall be payble as per actual site condition and due verification by Engineer In Charge. Note-6. Safe Carriage of PCC poles/other material including Loading/un-loading as per actual distance of work-site from place of lifting & shall be payble as per actual distance and due verification by Engineer In Charge. Note-7. Unit rates are inclusive of GST and shall be paid if applicable. Note-8. The work should be carried out as per specification and standard measurement of Jodhpur Discom.