Central Coalfields Limited has published Tender For Supply Of 2X 5 Mva, 33/6.6 Kv Sub Station At Konar Ocp. Submission Date for this Tender is 05-12-2022. Substation Tenders in Bokaro Jharkhand. Bidders can get complete Tender details and download the document.
| Sr No | CorrigendumDate | Corrignedum | CorrigendumType | NewSubmissionDate |
| 1 | 25-Nov-2022 | Date Extension Corrigendum | Date | 05-12-2022 |
| Sl. No. | Item Description |
| 1 | A. WORK & SERVICES |
| 2 | a.) Detailed survey of the area, within the battery limits & submission of reports (Complete work as per Tender document)b.) Sub soil exploration, field and laboratory testing of samples & submission of reports (Complete work as per Tender document) |
| 3 | B. DESIGN & ENGINEERING COST |
| 4 | a). Preparation and submission of system engineering drawings as per system requirements b). GA & detail engineering designs and drawings of all civil and structurals included in the system and scope of works (Complete details of the system) c). G.A. & detailed engineering designs and drawings including working and maintenance manuals of (Complete details of the system) : i)all individual equipment ( Electricals) ii) Fire-Fighting System iii) Earthing system & Lightening protection system iv) Cabling System v)Illumination system & Elerical Wiring Drawingof sub-station building vi) Single Line Diagram & GA Drawing of the switchyard vii)Any other system/unit to matchthe scope of work& requirementd).Documentation as per tender specification, complete as per scope of works |
| 5 | C. CIVIL & STRUCTURAL WORKS |
| 6 | a). Earthwork in cutting in all types of soil and rockb). Earthwork in fillingc). Sand filling d). PCC (M 10 and higer grade) at all levels as per system requirement e). RCC (excluding reinforcement) at all levels as per system requirement (M20 grade and above) f). Supply, bending, binding and placing of Tor steel in positiong).Supply, fabrication and erection of structural steel at all levels as per system requirementh). Liners as per tender documenti).Masonary work J)Pavement in substation |
| 7 | Developmental work and infra-structure as per tender document |
| 8 | a). Site development:- earthwork in excavation and banking for leveling & dressingb). Gravel packing in switchyard c).Roads and Culvertsd). Water supply for industrial, drinking and firefighting puposes including provision for deep bore-well, pipelines, ground water tank, pumps & pump houses with all electricals.e). Dwarf Wallf). Substation buildingg).Security Post h). Drainage arrangementi). Boundary wall with barbed wire & gate J). Cable Trenchesk). Lighting and Lightning Towers l).RCC foundation for Steel Structures and transformers in outer switchyardm). PCC foundation for Lightening and lighting towers n).Retaining wallo).Chain linked fencing & Gate p). Anti-weed treatment q). Soak Pit for transformersr).Sewerage s). Miscellaneous |
| 9 | D. PLANT & MACHINERY ( SUPPLY) |
| 10 | 33 kV side comprising of following: i. 33 kV, 630 A,25 kA, 3 pole, outdoor type, gang operated double break isolator with earthing switchand suitable for outdoor installation- 2 Setii. 33 kV, 630 A,25 kA, 3 pole, outdoor type, gang operated double break isolator suitable for outdoor installation, structure mounted-08 Set. iii. 33 kV off-load isolator with D.O. switch suitable for outdoor installation, structure mounted and current rating of 630 Amps-04 Set.iv. 30 kV grade, 10 kA lightning arrestor, station class, metal oxide, suitable for 33 kV system in outdoor switch yard of substation, in set of three-6 Set vi. Current transformers,33 kV out door type, accuracy class-1.0, suitable for installation on structures for metering and protection with CT ratio - 100-50/1-1-1A - 5 Setvii. Potential transformers, 33 kV /110V, outdoor type, oil immersed, burden 100 VA, suitable for installation on structures for metering and protection - 2 Set.viii.Vacuum circuit breakers, 33 kV, 400 Amps, 750 MVA symmetrical breaking capacity with indoor type remote control panel as per specification-5 Nos. ix. Transformer, outdoor type, Cu wound, 5 MVA, 3 Phase, 50 Hz, Primary Voltage: 33000 V Secondary Voltage: 6600 V, Connection: DYn11-2 Nos. x. 33 kV/0.230 kV(L-L), 100 kVA, Outdoor, lighting transformer (Cu) ,50 Hz, DY11- 1No.xi. 33 kV/0.415 kV, 160 kVA, outdoor, station transformer (Cu)-1 No. |
| 11 | 6.6kV side comprising of following: i.6.6 kV off-load isolator suitable for outdoor installation, structure mounted 800 Amps- 8 Setii. 6 kV grade, 10 kA lightning arrestor, station class, metal oxide, suitable for 6.6 kV system in outdoor switch yard of substation in set of 3 nos-8 Set iii. Vacuum circuit breakers, 6.6 kV, indoor type, 1250 Amps, 250 MVA symmetrical breaking capacity with built in CT and PT and control panel as per specification-3 Nos. iv.Vacuum circuit breakers, 6.6 kV, indoor type, 800 Amps, 250 MVA symmetrical breaking capacity with built in CT and PT andcontrol panel as per specification- 10 Nos. v. Capacitor bank, indoor type, 6.6 kV, of required (req.kVAr complete with indoor automatic power factor correction relay panel -2 Set |
| 12 | Substation Outdoor Yard:i. 33 kV Aluminum Tubular Bus, 50 mm (min) for bus and connection between equipment .Insulators with clamps and connectors etc. for 33kV incoming, transformer bays and other equipment- 1 Lotii. ACSR/AAA conductor and suitable insulators for making jumper connections and interconnections between different equipment on 33 kV side - 1 Lot (For details please refer Vol-II of NIT) |
| 13 | Earthing System:i.Earthing system (Safe Earth Electrode type) including earth pits, required galvanised strips/flats for inter connection etc.-1 Lotii.Earthing of boundary fencing consisting of earth pits, electrodes, grid conductors (Galvanised steel flats), saddles, required hardware (washers, nuts, bolts), earthing conductors etc-1 Lot iii. Earth pits, electrodes, conductors, saddles, required hardware etc including neutral grounding resistor for 5 MVA 33/6.6 kV 2 nos power transformers of rating 76 Ohm, 50 Amps for controlling neutral current complete with all accessories and relays, for Earthing of Transformer neutrals- 1 Lot iv. Required earth pits, electrodes, Galvanised steel flats, saddles, required hardware etc. for earthing of Lightning arrestors- 1 Lot v. Earthing arrangement consisting of earth pits, electrodes, grid conductors (Galvanized steel flats), saddles etc. for the earthing of equipment of substation building- 1 Lot vi. Required pipe line (at least 13 mm dia.), pipe fittings, valves, overhead tank etc. for arranging watering arrangement at earth pits-1 Lot |
| 14 | Lightning protection system:i.Lightning protection system consisting of spikes, earth pits, galvanised strips /flats, shield conductors etc.-1 lot ii. Lightning protection system including a) Galvanized Iron wire of size 7/12 SWG for shielding wire b) Galvanised steel structure tower 15M height/ Lightning protection mast-1 Lot c) Spikes, interconnecting galvanized steel flats etc for protection of the total switchyard area against lightning stroke - 1 lot iii. Lightning protection system for substation building consisting of suitable number of spikes, interconnecting galvanized steel flats, down earth conductors, earth pits, electrodes, earth pit interconnecting galvanized flats, saddles, hardware etc - 1 lot |
| 15 | Firefighting system : i. Automatic fire protection system for main transformers(Nitrogen Injection Type). as per requirement of DGMS norms and TAC guidelines and specification-1 Lot ii. Fire extinguishers of different types, sand buckets, etc. as per specification complete with mounting arrangement-1 lot iii. Fire hydrant system for outdoor yard including Hose Pipe,hoses,hydrant pipe ,valves etc - CO2 & Dry type extinguishers , sand buckets with stand - 1 lot |
| 16 | Illumination system & Fans: i) Supply of distribution boards, luminaries, ceiling fans, exhaust fans etc. including junction boxes, conduits, switches sockets etc. for indoor illumination as follows: A) For control room 1)The illumination system must be designed to ensure minimum illumination lux level of 100 Horizontal and 50 Vertical inside the substation building (Control room). 2) Ceiling fan, 48" sweep-8 Nos B) For other rooms & utility areas 1)The illumination system must be designed to ensure minimum illumination lux level of 100 Horizontal and 50 Vertical inside the substation building 2) Ceiling fan, 48" sweep-10 Nos. C) Exhaust Fan Battery room- 2 no 12" sweep Toilet - 1 no 9" sweep |
| 17 | Outdoor Lighting :i. Flood light luminaries with LED lamps of suitable wattage and efficiency, control gear bracket etc. for outdoor yard lighting for installation in 15 M high lightning towers to maintain min. LUX level of 50 H in switchyardii.11 m high steel tubular poles along withLED street light luminaries of suitable wattage and efficiency along with control gear, brackets etc for yard lighting to be installed in the periphery/internal roads of the yard to maintain min. LUX level of 50 H in switchyard - As per design iii.LED flood light luminaries of suitable wattage and efficiency along with control gear, brackets etc. for periphery lighting to be installed in the four sides of substation building/ control roomiv.Post top lantern of suitable rating with lighting switch boards, luminaries and cables on each entry gate of the substation area for outdoor illumination- 4 Nos.v.Inverter cum battery charger along with battery for emergency lighting suitable for operation at 230V AC inside substation building - 2 Lotvi.Lighting distribution board 3 ph, 230V with MCCB/MCBs for control and distribution to lighting load of the substation-1 Lotvii. Emergency illumination including distribution board, cable, switches, luminaries etc - 1 Lot (For details please refer Vol-II of NIT) |
| 18 | Auxiliary Power supply system: i. Power distribution board, 415V, 3 ph and neutral with MCCB/MCB’s for control and distribution of auxiliary loads including firefighting system of the substation except lighting load-1 Set ii. 110V rechargeable sealed maintenance free battery (SMF), lead acid type (220 AH. capacity) complete with two float cum boost charger (one working and one standby), wooden rack etc along with DC Power distribution board, 110V, with all protections for supplying power to various installations- 1 Set |
| 19 | Cables and accessories: i. LT Power cable, 1100V grade, PVCSWA, 10 sq. mm.(minimum),3/4 core copper stranded conductors - 1 Lot ii.Outdoor Lighting cable, 1100V, PVCSWA , 2 cores, 10 sq mm (minimum) stranded copper conductors - 1 Lot iii.Outdoor Control cables, 1100V grade, PVCSWA, for 33kV side copper conductors of with required number of cores and required sizes- 1 Lot iv. Wires for internal wiring of 1.5 sq mm and 6 sq mm size, PVC insulated copper conductor cable of 1100V grade- 1 Lot v. Cables for internal control wiring of illumination, ceiling fans, power sockets etc. 1.5 sq mm and 6 sq mm size, PVC insulated copper conductor of 1100V grade- 1 Lotvi.Cable trays, cable racks, binding materials, cable glands/lugs, cablejointing kit, bolts, nuts, washers, termination kit etc.- 1 Lot vii. 3.5 Core, 6.6 kV XLPE aluminium cables for outgoing feeders-1 Lot |
| 20 | Incomer Bus-Ducti. 6.6 kV Aluminum 3 Phase, Phase Segregated Busduct of Required size for 6.6 kV switchboard main incomer with all accessories- 1 Lot |
| 21 | SCADA System & AutomationSCADA System and Energy Management System as per specification |
| 22 | Miscellaneous Equipment comprising of the follwing :i. Water cooler with water purifier - 1 No.ii. Portable temperature recorder with thermostat- 1 No.iii. Submersible pump with electricals & cables- 1 No. iv. Air conditioners 1.5 Ton Capacity - lot |
| 23 | E. ERECTION, INSTALLATION & COMMISSIONING |
| 24 | Erection of electrical and other equipment |
| 25 | Commissioning of the Substation |
| 26 | F . OTHERS ITEM |
| 27 | Any other item left out for completion of the project |
| 28 | G . OPERATION,MAINTENANCE AND TRAINING |
| 29 | Operation and Maintenance of the substation for five year after commissiong |
| 30 | Training of the employerpersonnel as per tender document |
| 31 | Total impact of GST for the purpose of CTC |
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