REPAIR MAINTENANCE OF COMPACT SUB-STATION AND CERTAIN OTHER MISC WORKS AT CERTAIN POWER HOUSE AT SUKNA MIL STATION UNDER GE SUKNA

Amount

S & F in repairs Steel Tubular Poles complete with and including cast iron base plate, finial taper plug, bolts , nuts & screws, type 410 SP-55(11 Metre long), also including painting to the external exposed surfaces with 2 coats of aluminium paint over 1 coat of red oxide primer and with 2 coats of black bituminous paint over 1 coat of red oxide primer to the external exposed surfaces of steel poles embedded in the ground / concrete after preparation of the surfaces, numbering to the poles, complete in all respect as specified and as directed. Note:- Excavation & Earth Work, concrete for foundation and coping shall only be measured and paid for separately.

Disconnection of HT/LT connection & earth connection, dismantling carefully of the under mentioned indoor/ pole mounted, outdoor/indoor type, Step Down Transformers of the under mentioned capacities from primary/ secondary side, transportation to workshop (particulars of the workshop shall be got approved by the contractor from the GE) by crane or any other mode for carrying out the repairs, opening of the transformer in the presence of Engineer-In-Charge and Contractor, preparing inventories for the serviceable & unserviceable parts/components, decanting transformer oil, storing the same in suitable container safely, opening the top cover, disconnection of the live parts, dismantling bushing, lifting core assembly, checking the winding slackness, winding burning, distortion of core, cleaning and drying the tank, core, varnishing, baking by oven heating, cleaning of tank, conservator, cooling tube and including necessary leak testing, lowering of complete core assembly inside the fully cleaned transformer after carrying out repairs, refilling of the tank with dehydrated Transformer oil, Topping up the tank with new transformer oil, testing in the presence of EIC & submission of the Test Report to meet the requisite parameters for satisfactory performance of the Transformer from WBSEB, Transportation back of the repaired Transformer to the original site, re-installation at the original position, making connections of cables on primary / secondary side, commissioning & again testing, complete all as specified and directed :- Notes:- (i) The quoted rates shall be deemed to include for all the repairs, replacements, other elements etc, to make the Transformers fully functional & serviceable to the entire satisfaction of the GE. However the payment for the items/materials/ works as included under items Nos. 3 to21 herein-after, to the extent required and as ordered shall only be paid for separately. (ii) The quoted rates shall also be deemed to include for providing necessary Temporary Standby Transformer (which will be made available by the Deptt. at AGE E/M Store Yard) for interrupted electric supply [at the location of the existing Transformer(s)] for the affected period for carrying out repairs to the existing Transformer(s). Cost of transportation of the Transformer from AGE E/M Store Yard to the site of Transformer to be repaired, material & labour for making electric connection of the standby Transformer, disconnection of the standby Transformer after arrival of the repaired Transformer, Transporting back of the standby Transformer to the AGE E/M Store Yard, shall be deemed to be included in the quoted rate of above item. (iii) The contractor must have own one dehydrated hot Vacuum Filtration Plant with minimum 1000 liter per hour capacity Transformer Oil Filtration plant with a provision of oil test set for immediate showing of result. The plant must have provision of on load filtration.

63KVA to 200KVA capacity, 11000/440 Volts.(Make: Crompton Greaves/Voltamps/ETE/Stanelec/IEAC/MARSONS /any other Make as existing)

250KVA to 350KVA capacity, 11000/440 Volts.(Make: Crompton Greaves/Voltamps/ETE/Stanelec/IEAC/MARSONS /any other Make as existing)

400 KVA to 750 KVA capacity, 11000/440 Volts .(Make: Crompton Greaves/Voltamps/ETE/Stanelec/IEAC/MARSONS /any other Make as existing)

M&L for carrying out the repairs to transformer, step down, 11/0.433 KV, 63 to 200 KVA capacity at existing position on pole and/or on platform after disconnection of HT/LT connection & earthing lead, opening of transformer cover plate, taking out of transformer oil to a level as required and kept in clean & dry container for re-use of the same, repairing/overhauling of the defective parts/components as directed including replacement of unserviceable items/components, making connections of the transformer after repairs, topping-up the tank with the same transformer oil, dehydrated old oil and with new oil as required/directed and testing the Transformer, all as specified and directed :- NOTES :- (i) The Transformers as catered for under this item are other than those included under item No 2.01 herein before. (ii) The quoted rates shall be deemed to include for all the repairs, replacements, other elements etc to make the Transformers fully functional & serviceable to the entire satisfication of the GE.

Supply only porcelain bushing on HT side with Brass/copper stud assembly as per the existng duly threaded at both ends with and including oil seal, heavy gauge brass/copper nuts, washers suitable for the following capacity of transformers, complete all as specified and as directed.

63KVA to 200KVA capacity, 11000/440 Volts (11000 volts grade bushing).

250 KVA to 350 KVA capacity, 11000/440 Volts (11000 volts grade bushing).

400 KVA to 750 KVA capacity, 11000/440 Volts (11000 volts grade bushing).

Supply only porcelain bushing on LT side, 1100 Volts grade with brass stud assembly as per the existing duly threaded at both ends with and including oil seal, heavy gauge brass nuts, washers suitable for the following capacity of transformers, complete all as specified and as directed.

63KVA to 200KVA capacity, 11000/440 Volts.

250 KVA to 350 KVA capacity, 11000/440 Volts.

400 KVA to 750 KVA capacity, 11000/440 Volts.

Supply only of breather assembly having transparent MS body with top and bottom portion pressed with mettalic cover, suitable for fixing on existing pipe of size 15/20/25 mm bore as per site requirement and for transformers of 63 KVA to 200 KVA (11kv/0.433kv) capacity, complete all as specified and as directed. Note for Item Nos 6 to 8 : Cost for provision of silica gel not included in the scope of above items.

Supply only of breather assembly having transparent MS body with top and bottom portion pressed with mettalic cover, suitable for fixing on existing pipe of size 15/20/25 mm bore as per site requirement and for transformers of 250 KVA to 350 KVA (11kv/0.433kv) capacity, complete all as specified and as directed.

Supply only of breather assembly having transparent MS body with top and bottom portion pressed with mettalic cover, suitable for fixing on existing pipe of size 15/20/25 mm bore as per site requirement and for transformers of 400 KVA to 750 KVA (11kv/0.433kv) capacity, complete all as specified and as directed.

Supply only silica gel of superior quality of 5 to 10 mm grade, complete all as specified and directed.

Supply only 6mm thick synthetic bonded rubberized cork gasket sheet for top cover and primary / secondary bushes for the following capacities of transformers, complete all as specified and as directed.

63 KVA to 200 KVA capacity, 11000/440 Volts

250 KVA to 350 KVA capacity, 11000/440 Volts

400 KVA to 750 KVA capacity, 11000/440 Volts

Supply only transformer Oil conforming to IS-335 for toping up /oil change of Transformers of any capacity at different locations, complete all as specified and as directed. Notes:- (i) The dielectric strenght of the transfomer oil shall not be less than 50 KV in 2.5mm gap electrode. (ii) Quoated rate shall also be deemed to include for testing of transformer oil from CPRI / Govt. approved lab as per relevant IS and submission of necessary test reports.

Vaccume dihydration with hot filteration plant of old transformer oil at different locations, after filteration, Di electric strength shall not be less than 50 KV in 2.5 mm gap electrode, complete all as specified and as directed. The contractor shall submit necessary Test Report for Di electric strength before dehyderation as well as after dehyderation from CPRI /Govt approved Lab as per relevant IS. The contractor's quoted rates shall also be declered to include for this element. Note:- Transformer Oil after dehyderation shall be measured and considered for the payment under the above item.

M&L for winding with & including new proper size DPC Copper wire duly provided with high quality paper insulation (TPI) suitable for HV (11 KV) coils for 11/0.433 KV Transformers, complete all as specified and as directed., complete all as specified and as directed. Note for Item Nos . 13 to16 : Gauge and quality of copper wire shall be as per existing and got approved from GE before incorporation.

M&L winding with & including proper size DPC Copper wire duly provided with high quality paper insulation (TPI) suitable for LV (1.1 KV) coils for 11 /0.433 KV Transformers, complete all as specified and as directed., complete all as specified and as directed.

M&L for winding with & including proper size DPC Copper wire duly provided with high quality paper insulation (TPI) suitable for LV (1.1 KV) coils for 11 /0.433 KV Transformers, complete all as specified and as directed., complete all as specified and as directed.

M&L for winding with & including proper size DPC aluminium wire duly provided with high quality paper insulation (TPI) suitable for LV(1.1 KV) coils for 11 /0.433 KV Transformers, complete all as specified and as directed, complete all as specified and as directed.

M&L for Rewinding and re-insulation of old serviceable retrieved super enamel copper wire (DPC) for H.V. (11 KV) coils for 11/0.433 KV Transformers and including provision of new high quality paper insulation (TPI), complete all as specified and as directed. .

M&L for Rewinding and re-insulation of old serviceable retrieved super enamel copper wire (DPC) for L.V. (1.1 KV) coils for 11/0.433 KV Transformers and including provision of new high quality paper insulation (TPI), complete all as specified and as directed.

Supply only insulating materials like Nomax Paper, Amp Tube, Bakelite Tube, Glass Tape, Precompress Pan Card, Cotton Tape etc (other than insulating materials as included in the items for winding/rewinding of transformers) for assembly of the following capacities of transformers, complete all as specified and as directed.

63 KVA to 200 KVA capacity, 11000/440 Volts

250 KVA to 350 KVA capacity, 11000/440 Volts

400 KVA to 750 KVA capacity, 11000/440 Volts

Supply only externally operated tape changer switch HT, 11 KV of 7 point, off load type complete for transformer of capacity 63 to 200 KVA (11kv/0.433kv) to match with the existing and as approved by GE all as specified and as directed.

Supply only externally operated tape changer switch HT, 11 KV of 7 point, off load type complete for transformer of capacity 250 to 350 KVA (11kv/0.433kv) to match with the existing and as approved by GE all as specified and as directed.

Supply only externally operated tape changer switch HT, 11 KV of 7 point, off load type complete for transformer of capacity 400 to 750 KVA (11kv/0.433kv) to match with the existing and as approved by GE all as specified and as directed.

M&L for spray painting for the following capacity of transformers by preparing the old painted and applying one coat of approved colour synthetic enamel paint, complete all as specified and as directed .

63 KVA to 200 KVA, 11 KV / 0.433 KV.

200 KVA to 350 KVA, 11 KV / 0.433 KV

400 KVA to 750 KVA, 11 KV/ 0.433 KV

2 MVA to 3.15MVA 33 KV / 11 KV.

Supply only oil temperature indicator with two micro switch, 3 metre capillary length, range 0-150 degree centigrade, alarm and trip mechanism, make : Precimeasure controls or of existing make as approved by the GE, complete all as specified and as directed.

Supply only winding temperature indicator with two micro switch, 3 metre capillary length, range 0-150 degree centigrade alarm and trip mechanism of make : Precimeasure controls or of existing make as approved by the GE, complete all as specified and as directed.

M&L for finding fault in the existing route of HT cable with Fault Locator Machine, complete all as specified and as directed. Note : The quoted rates shall also be deemed to include for arranging of the Fault Locator Machine (and inclusive of its hire charges) by the contractor under his own arrangement.

Cuttting / trimming of tree branches in close proximity to over head lines to maintain a clearance of 1.50 metres from the over head line to nearby trees, complete all as specified and as directed. Note:- Only effected Length of over head conductor (length of only one conductor for the effected area) shall be measured as per Running Meter for payment purpose .

Re-routing and re-laying of LT UG cable in trenches with necessary connections and disconnections for re-distribution of load of 11/ 0.433 KVA distribution transformer including taking out of existing cable, necessary extension of cable (if required), complete in all respects, as specified and directed. Notes:- (i) Excavation and earth work, sand cushioning, protection covers shall be measured and paid for separately. (ii) Additional cable in case required and provided shall also be measured and paid separately.

Supply, laying and testing cable XLPE insulated, screened PVC bedded, galvanised steel strip or wire armoured electric power cables (hevy duty) with aluminium conductor 11000 volts grade (Earthed) of size 95 sqmm 3 core, including taking out of existing cable, complete all as specified and directed. Note:- Excavatioin and earth work, sand cushioning, protection covers, protection pipes and jointing kits Iincluding jointing materials shall be measured and paid for separately.

Excavation in trenches, not exceding 1.5 m wide and not exceeding 1.5 m in depth for foundation, laying of cable, pipe etc and n. exc 10 Sqm on plan and n exc 1.5 m in depth for shafts, wells, manholes etc and getting out in soft/ loose soil, complete all as specified and directed.

All as per Item No 30 above but depth exceeding 1.5 metre and not exceeding 3.00 metre

Returning, filling in, with approved earth after removal of grass, vegetation etc including spreading, levelling, watering and well ramming in layers not exceeding 25 cm, complete all as specified and directed.

Removing excavated material not exceeding 50 m and depositing where directed at a level not exceeding 1.5 m above the staring point, complete all as specified and directed.

M& L for Sand cushioning in trenches for cushioning of underground cable including spreading, levelling, well ramming in layers not exceeding 25cm in thickness, complete all as specified and directed.

Supplying and laying factory made (Make as approved by the GE) pre cast unreinforced concrete cable cover of class HV, type 1, flat, size 300mm x 180 mm x 40 mm for cable protection in trenches, complete all as specified and directed.

Supply and fixing GI tubing, light grade, 80mm bore for protection of cable under road crossing, across drain, along electric pole or floor /wall etc, complete all as specified and directed. Note for Item No. 36: Excavation & Earthwork/Boring/ Drilling shall be measured & paid for separately. However the cost for provision of clamps made from mild steel flat of required size, bolts, nuts, washers etc (including painting of mild steel surfaces with 2 coats of aluminium paint over 1 coat of red oxide primer) for fixing of G.I. pipes with poles etc shall be deemed to be included in the quoted rate of above item.

Boring (horizontally) using ultrasound technique and necessary machine for passing 80mm bore pipe for protection of the cable at approx 2 metre depth in soil below existing road, pavement, hard standing etc without damaging the existing surfaces, getting out & disposal of soil to a distance not exceeding 50 metre from the site of work, complete all as specified and directed. Note : Cost for provision of pipes & cable not included in the scope of above item.

M & L for cement concrete type C-2(1:3:6) (using 40mm graded stone aggrgate) for pole foundation including provision of necessary form work, complete all as specified and directed.

M & L for cement concrete (1:2:4) type B-1 (Using 20mm graded stone aggregates) for coping of pole etc including provison of necessary form work, complete all as specified and directed.

Surface dressing averaging 15 cm deep in soft/ loose soil, including site clearance, cutting of green vegetation, grass, subsequent to above spreading thin layer of anti-vegetation chemical as per the manufacturer instructions (make of chemical shall be as approved by the GE) near the 2/4 pole structures, GODs and various unmanned electric sub stations inside and outside of premises, also including disposal of all spoil, grass, green-vegetation etc outside of the premises, complete all as specified and as directed. Note :- The surface dressing shall normally be done once in three months for the Sub-Stations etc as ordered. Payment for each time shall be made for separately as per the actual work done at site.

M & L for cross arms, bracings, supports, clamps and back plates fabricated from structural steel sections including nuts, bolts, washers, welding, bending cold or hot, drilling holes for bolts, in any shape or size as indicated or directed and inclusive of preparation of exposed surfaces, application of one coat of red oxide primer and thereafter 2 coats of alluminiuam paint including dismantling of old one, complete all as specified and directed.

S&F in repair, 11 KV, 400 Amps, out door, tilting type, gang operated, air break off load disconnecting switch, triple pole, each consists of galvanized channel base HT insulator,non - ferrous knife and spring loaded contacts, arcing horn of adequate section to break magnetizing current of the transformer, horizontal GI pipe of adequate length for phase separation and for operation from ground level and operating handle, complete with locking arrangement on both ON and OFF position, all ferrous parts shall be hot dipped galvanized and non ferrous parts heavily tinned to withstand weather suitable for vertical mounting and conforming to IS 1818-1961, complete all as specified and as directed.

S&F in repairs, for HT Horn gap fuse unit suitable for 100 A capacity, 11KV, single pole (Two post insulators per pole) with and including HT barrel fuse with holder and also including necessary connection to ACSR conductors, complete all as specified and directed.

Supply, jointing and testing in repairs cable jointing kit for 11 KV (Earthed) grade cable for outdoor termination, heat shrink type joint complete with and including jointing materials and accessories suitable for 11KV XLPE insulated armoured aluminium cable of size 95Sqmm 3 core, complete all as specified and as directed.

Supply, jointing and testing in repairs straight through cable jointing kit (Heat shrinkable type) for 11 KV (Earthed) grade cable complete with and including jointing materials and including accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 95 Sqmm and including provision of aluminium thimbles, complete all as specified and as directed.

Supply, jointing and testing in repairs cable jointing kit for 11 KV (Earthed) grade cable for indoor termination, heat shrink type joint complete with and including jointing materials and accessories suitable for 11KV XLPE insulated armoured aluminium cable of size 95Sqmm 3 core, complete all as specified and as directed.

M&L earthing complete with galvanised steel earth plate electrode of size 600 x 600 x 6 mm thick buried directly in ground in vertical position (earth pit not less than 2.25 m deep below the normal ground level) with top edge of the earth plate not less than 1.5 m below normal ground level, connected to galvanised earth lead of GI strip 32x6 mm by means of bolts, nuts, check nuts and washers of galvanised iron or steel, complete all as shown in Electrical Plate No. 3 of SSR Part-1 and connected to earthing test point and including dismantling of old one, complete all as specified and directed. Note: The unit rate shall also include for earth work in any type of soil, PCC 1:3:6 type C-1 chamber, RCC 1:1.5:3, type A1 cover slab, 50 mm thick reinforced with 8 mm dia TMT bar @ 140 mm C/C both ways, 10 mm dia plain bar lifting handle embedded in cover slab, 20 mm bore medium grade GI watering pipe, 15 mm bore GI light grade earth lead rotection pipe, funnel, wire mesh, copper lugs, charcoal and common salt in alternate layer etc.

M&L earthing complete with copper earth plate electrode of size 600 x 600 x3.15 mm thick buried directly in ground in vertical position (earth pit not less than 2.25 m deep below the normal ground level) with top edge of the earth plate not less than 1.5 m below normal ground level, connected to copper earth lead of size 20x3 mm by means of bolts, nuts, check nuts and washers of copper, complete all as shown in Electrical Plate No. 3 of SSR Part-1 and connected to earthing test point and including dismantling of old one, complete all as specified and directed. Note: The unit rate shall also include for earth work in any type of soil, PCC 1:3:6 type C-1 chamber, RCC 1:1.5:3, type A1 cover slab, 50 mm thick reinforced with 8 mm dia TMT bar @ 140 mm C/C both ways, 10 mm dia plain bar lifting handle embedded in cover slab, 20 mm bore medium grade GI watering pipe, 15 mm bore GI light grade earth lead rotection pipe, funnel, wire mesh, copper lugs, charcoal and common salt in alternate layer etc.

GEETA CONSTRUCTION

MS ORIENT ENGINEERING WORKS

M/S DAWN ELECTRICAL INDUSTRIES

M/s B. K. Ghosh and Co.

R N SAH N CO

Bidder Name

Janata Enterprises

GEETA CONSTRUCTION