Installation and commissioning of Alternate power source at MRS, Nalco Mines, Damanjodi.

Amount

Transportation of 3000 KVA, 33KV/ 415 V power transformer from Mines central store to MRS sub station (500 m distance), Installation of transformer inside transformer room, laying of GI earth flat and connection of all earth points with nearest earth pit, laying of separate earth flat from transformer neutral bushing to two separate earth pits, laying of separate earth flat from transformer body to two separate earth pits filteration of transformer oil, filling and top up of transformer oil. Cleaning of the transformer with wire brushes, application of red oxide anti rust metal primer & then spray Painting with 2 coats of smoke grey enamel paint, Loading of transformer and its accessories, shifting from Central store and unloading at MRS with party's own arrangement of suitable capacity articulated crane and truck ,tools tackles including all service support (weight-10 ton approx) and as per the direction the E-I-C. The transformer oil filtration machine & BDV test kit shall be issued by NALCO from MRS s/s but its operation shall be done by vendor as per the directions of E-I-C till the BDV value of oil reaches a stable value above 50 KV.

Transportation and installation of 2000/4000 Amp, 3 phase neutral, 415 volt, PCC panel [Dimension-L( 4380mm)xH(2300mm)xD(1754mm)approx. 5 MT. Panel will be in 3pieces of length&wt (1630mm,wt.1885kg),(1050mm,1150kg),(1700mm,1910kg) ] from Mines central store to MRS sub-station,Physical inspection of all panels and breakers,all terminal tightness checking ,laying of GI earth flat and connection of all earth points with nearest earth pit ,leveling and fabrication of base frame ,making support for LT cable entry etc .Loading, unloading and transportation from central stores to SMCP with partys own arrangement of hydra , truck ,tools tackles including service support fixing & tightning of all nut bolts, bus bars & panel coupling plates, cleaning of panels, testing of the panel, glanding & connection of control cables and as per the direction the E-I-C.

Earth work excavation by mechanical means or manual in foundation, earth pits, pole foundation,stay foundation,diversion of drain,cable trenches and other Misc. earth work in all type of soil including dressing of soil and disposal of surplus excavated soil with a lead distance of 50 mtr (blasting probhibited) and as per direction of E-I-C.

Laying of HT cables of different sizes up to 185 sqmm and voltage grade up to 33 kv in ready trays/trenches/supported on structure/pull through pipes with suitable clamp, supply and fixing of aluminium strip number tags, supply and fixing of G.I clamps, hardware etc including issue & transportation of cable from Mines store/yard to site at the place of installation, unpacking, dismantling of old cabeles etc,all labour and materials, as per specifications of this tender and directions of Enginer-in-Charge.

Laying of LT cables of different sizes above 185 sq. mm. up to 300 sqmm and voltage grade up to 1.1 kv in ready trays/trenches/supported on structure/pull through pipes with suitable clamp , supply and fixing of aluminium strip number tags, supply and fixing of G.I clamps, hardware etc and refiling of trench with sand cushioning and protective cover in case of under ground laying, including issue & transportation of cable from Mines store/yard to site at the place of installation, unpacking,all labour and materials, as per specfications of this tender and directions of Enginer-in-Charge.

Installing of GI cable trays of different sizes (up to 450 mm width x 100 mm) in convenient section ,joined with connectors, clamped with suitable supports ,including transportation from Mines store/yard to site at the place of installation, unpacking,welding if required and with all labour and materials, as per specfications of this tender and directions of Enginer-in-Charge.

Supply, installation and testing of pipe in pipe chemical earthing system by Excavation of earth pit in hard soil of size 10 ft. X 2 ft. X 2 ft, Transportation of all earthing materials and hardwares to site, preparation of chemical or ground enhancement materials (graphite based) Acceptable makes Erico/ Ashlok/ Truepower/ABB/Dehn make, Minimum 50 kg per pit (bentonite base not acceptable) with proper ratio and filling the chemical into the earth pit with positioning of High conductive Galvanized pipe in pipe earth electrode suitable for 50 KA peak fault level at the center of the pit , resurfacing with black cotton soil, connection of electrode with supply of ss or copper clamp with GI strip between earth pit and equipment,complete with brick chamber and RCC cover as per IS 3043 latest amendment. Party has to carry out the Numbering of the earth pit painted with synthetic enamel on the top cover of the pit with yellow body and black letter. Supply of earth enhancement chemicals, earth electrode, GI earth flat 120 x 10 mm (10 meter each), all Earthing materials clamps, bolts etc shall under the scope of the vendor.

Structural Fabrication and installation of MS base frames, supports for swithgear and brackets for miscellaneous electrical equipments, and cable tray supports out of rolled MS section, pipes,plates etc., including transportation,welding, bolting, rivetting, supply of necessary anchor bolts and grouting etc., supply of paint and applying one coat of anti-rust primer and two finished coats of approved synthetic enamel paint including breaking walls, floors, etc. for structures as required , including all labour and materials including transportation. as per specfications of this tender and directions of Enginer-in-Charge.,Nalco shall issue structural steels as free issue material.

Providing and laying plain cement concrete for all depths below and up to a plinth level in foundations including tamping,ramming,vibrating,curing, shuttering etc.all as specified in any shape,position,thickness and finishing the top surface rough or smooth as specified and directed, including supply of all materials and all complete for concrete of 1:3:6 grade with 20mm and lower size 6 graded crushed stone aggregates & course sand including all labour and materials, as per approved drawing, specfications of this tender and directions of Engineer-in-Charge. (Cement under scope of Nalco for free issue)

Supply, making and termination of heat shrinkable indoor end termination kit suitable for high voltage, 3 core aluminium XLPE cable (185 sq mm) up to 33 kv to obtain sufficient length to connect end equipment,withstand thermomechanical stresses under short circuit condition, protect against ingress of moisture and enclose to prevent mechanical damage of the termination kit (Raychem make only).as per the specification of the tender and direction of E-I-C.

Supply, making and termination of heat shrinkable out door jointing kit suitable for high voltage, 3 core, Aluminium XLPE cable (185 sq mm) up to 33 kv to obtain sufficient length to connect end equipment,withstand thermomechanical stresses under short circuit condition,protect against ingress of moisture and enclose to prevent mechanical damage of the termination kit (Raychem make only).as per the specification of the tender and direction of E-I-C.

Supplying & making of end termination with brass compression gland & aluminium lugs for size of cables upto 3.5 core 300 sq mm of PVC insulated & PVC sheathed/XLPE aluminium conductor cable of 1.1kv grade as required.

Breaking of RCC concrete foundation including cutting of rods etc, plinth, floor area for cable trench, fixing of panel and making of oil soak pit for transformer with surface finish & disposal of debris in the areas within 50 meter lead.

Preparation of documents, drawings, completions reports, test reports as per CEA regulations & liasoning with DMS (Electrical), Ranchi & coordination till inspection till recept of the permission to charge the installation. Only statutaory expenses shall be paid by NALCO as per actuals.

Supply & installation of GI earth stripsof size 75*10mm along the cable trench, cable tray, to ground eart flats with welding at joints, providing anti corrosive enamel, clamping of earth strips etc.

Shifting of cables from Central store to site Laying of cables along the cable trays,pipes,saddling or fixing the cables firmly on to the cable trays as per the directions of the Engineering-In-charge.NALCO shall issue cables only as free issue items. Control cables upto 24core,2.5Sqmm copper or aluminium and Power cables upto 4 Core, 25 Sqmm.

Dismantling of control cables upto 24CX2.5sqmm copper or aluminium armoured cable upto 95sqmm from cable trays as per direction of E-I-C.

Shifting from central store and Erection of belt weigher system in acceleration conveyor of cable belt system. Dismantling of old idler and stands. All local cable laying,all local JB and panel fixing on mounting and termination in JBs.Making of frames and mounting for JB&belt weigher panel is in scope of contractor.One run signal cable laying from MRS to acceleration conveyor JB inside existing GI pipe is in scope of contractor. All works to be done as per direction of E-I-C.MS Angles/channels required shall be issued as free issue material from NALCO.

RRR PERESTROIKA

SUSHANTA ENGINEERS