Military Engineer Services-MES has published Tender For Repair And Maintenance Of Transformer Stabilizer Ht Lt Over Head Lines Cables And Switchgears At Cijw School Vairengte Andlailapur Under Ge Silchar. Submission Date for this Tender is 18-02-2023. Transformer Supply Tenders in silchar Meghalaya. Bidders can get complete Tender details and download the document.
| Sr No | CorrigendumDate | Corrignedum | CorrigendumType | NewSubmissionDate |
| 1 | 24-Jan-2023 | Date Corrigendum | Date | 06-02-2023 |
| 2 | 24-Jan-2023 | BOQ and Tender documents | BOQ | 06-02-2023 |
| 3 | 06-Feb-2023 | Bid Auto Extn Corrigendum | Bid Auto Extn Corrigendum | 13-02-2023 |
| 4 | 13-Feb-2023 | Bid Auto Extn Corrigendum | Bid Auto Extn Corrigendum | 18-02-2023 |
| Sl. No. | Item Description |
| 1 | Excavation in trenches not exceeding 1.5 metre wide and not exceeding 1.5 metre depth for foundation of poles, laying of cables etc not exceeding 10 sqm on plan area and getting out in soft / loose soilcomplete all as specified and as directed. |
| 2 | Returning, filling in, of soil including spreading leveling, watering and well ramming in layers not exceeding 25 cm.thick complete all as specified and as directed . |
| 3 | Removing excavated material to a distance n.exc 50.00 metre and depositing/spreading where directed at a level n. exc 1.50 metre above the starting point complete all as specified and as directed . |
| 4 | Excavation in trenches not exceeding 1.5 metre wide and exceeding 1.50 metre but not exceeding 3.00 metre depth for foundation of poles, laying of cables etc not exceeding 10 sqm on plan area and getting out in soft / loose soilcomplete all as specified and as directed. |
| 5 | Materials and labour for PCC 1:2:4 type B2 using 20mm graded stone aggregate for copping the poles of any size complete all as specified and directedby Engr-in-Charge. |
| 6 | Materials and labour for PCC (1:2:4) type D2 (using 40mm graded stone as in PCC foundation complete all as specified and directedby Engr-in-Charge. |
| 7 | Materials and labour for PCC 1:3:6 type C2 (using 40mm graded stone as in PCC foundation complete all as specified and directedby Engr-in-Charge. |
| 8 | Dismantling of exsiting Uservicable/undersize ACSR or AAC conductors (of any size), jumper from overhead line removing unservisable material from site of work complete all as specified and directed by Engr-in-Charge |
| 9 | Materials and labour for Aluminium conductor steel reinforced (ACSR) conductor, as in overhead electric line and streching the same between two poles for required span with standared guage & size of ACSR and binding the conductore with pin/shackle insulator and jumper with alunimium binding wire not less than 2.00mm dia complete all as specified and directed by Engr-in-Charge |
| 10 | Restringing, tightening of loose/ broken ACSR conductor of any size and type for 3 phase 4wire system or Single phase 2 wire systemmaintaining standard sag including biding the conductor with pin/shackle insulator and jumper with aluminium binding wire not less than 2.00 mm dia for LT over head lines complete all as specified and directed. Note :(a) T&P required shall be arranged by contractor (b) Conductor between two poles shall be measured for each length |
| 11 | Material and labour for trimming of various sizes of tree branches which are touching / close to LT over head line at various place and clear the LT over head line upto 3.00 metre from conductorcomplete all as specified and directed.(Note: (a) All the safety equipments, cutting materials, ladder etc requirred for the work to be provided by the contractor.(b) The cutting shall be done two times during the contract period on as required basis. (c)Before and after photograph and video recording of the work will be done and kept on record.) |
| 12 | Dismantling old u/s RCC/Steel poles/struts of any size incl breaking up PCC foundation complete all as specified and directed by Engr-in-Charge. |
| 13 | Supply and fixing ofsteel tubular swaged poles complete with cast iron base plate, finial taper plug, bolts, nuts & screws as specified, type 410 SP-31 (Over all length 09 metres long) conforming to IS-2713. Pole shall be painted with one coat of red oxide primer throughout internally and externally up to 1.5 mtr length from bottom andthe remaining external portion shall be painted with two coats of aluminium paint over a coat of red oxide primer and numbering the pole with white paint alfa numeric letters on black patch complete all as specified and directed. (Note: Excavation, earth work and PCC shall be mersured and paid separatly) |
| 14 | Supply and fixing ofsteel tubular swaged poles complete with cast iron base plate, finial taper plug, bolts, nuts & screws as specified, type 410 SP-55 (Over all length 11 metres long) conforming to IS-2713.Pole shall be painted with one coat of red oxide primer throughout internally and externally up to 1.9 mtr length from bottom andthe remaining externalportion shall be painted with two coats of aluminium paint over a coat of red oxide primer and numbering the pole with white paint alfa numeric letters on black patch complete all as specified and directed. (Note: Excavation, earth work and PCC shall be mersured and paid separatly) |
| 15 | Dismantling of corroded/ rusted/ defective cross-arms of MS. Channel or angle of any sections complete all as specified and directed |
| 16 | Material and labour for cross arm bracing, support, clamps and back plate fabrication from structural steel section including nuts., bolts, washers welding bending cold or hot drilling holes in any shape or size as indicated or directed by Engr-in-Charge and incltwo coats of aluminium paint over a coat of zinc chrome primer complete all as specifiedand directed. |
| 17 | Refixing only for cross arm bracing, support, clamps and back plateincluding nuts., bolts, washers welding bending cold or hot drilling holes in any shape or size as indicated or directed and incl of one coat of aluminium paint over existing treatment complete all as specifiedand directedby Engr-in-Charge.(Note: Old servicable material obtained from item No. 14 here in before shall be reused under this item) |
| 18 | Dismantling of old unserviceable insulator, any type / size complete all as specified and directed. |
| 19 | Supply and fixing Pin type insulator, porcelain, vitreous, white, brown or green insulator including one galvanised mild steel spindle, two galvanised iron washers and one galvanised iron nut, 100mm height, 65mm dia for 1100 volts grade confirming to IS-2486 complete all as specified and as directed. |
| 20 | Supply and fixingShackle type insulator, porcelain, vitreous, white, brown or green insulatorof size 75mm height 90mm diaincluding MS strips 31x3mm washer, insulator bolts 12mm dia & nut suitable for working pressure 1100 volts grade complete all as specified and directed by Engr-in-Charge |
| 21 | Supply and fixingPin type insulator, porcelain, vitreous, white, brown or green insulator including one galvanised mild steel spindle, two galvanised iron washers and one galvanised iron nut, 150mm height, 150mm dia for 11000 volts grade complete all as specified and directed by Engr-in-Charge |
| 22 | Supply and fixing Disc type insulator, porcelain, vitreous 145mm high and 255mm dia ball and socket type, white, brown or green, Single disc assembly incl nuts and bolts of working pressure 11000 volts grade complete all as specified and directed by Engr-in-Charge |
| 23 | Dismantling of old unserviceable damaged stay assembly embedded in concrete including demolition of PCC complete all as specified and directed. |
| 24 | Supply and fixing stay assemblyusing 16 mm diameter of stay rod complete with accessories as shown in electrical plate No. 1 of SSR part -Iall as specified and directed.(Note: loop type insulator, stay strand with stay clamps, excavation and concrete shall be measured and paidseparately) |
| 25 | Materials and labour for loop type insulator porcelain, vitreous, white, brown or green large size with overall dimentions 90x1400mm clearance of hole 25.5mm complete all as specified and directed by Engr-in-Charge |
| 26 | Materials and labour for galvanized stay strand of size 7/4mm incl securing with LT pole clamp and stay clamp complete all as specified and directed by Engr-in-Charge |
| 27 | Dismantling old earth wire/ craddle/stay/ service distribution feeder complete all as specified and directed |
| 28 | Materials and labour for Cradle guard, hexagoanal/rectrangular or as existing shop fabricated with galvanized steel wire of 4mm dia incl binding the guards with cradle supporting GI wire and setting aside complete all as specified and directed |
| 29 | Material and labour for PVC phase separator for OH LT line 4 wire system complete all as specified and directed . |
| 30 | Material and labour for PVC phase separator for OH LT line 2 wire system complete all as specified and directed . |
| 31 | Dismantling old unserviceble air break gang operated switches vertical/horizontal mounted incl insulators and operating mechanism complete all as specified and directed . |
| 32 | Supply and fixingtriple pole mechanically operated air break isolator (GOD), vertical mounting, rotating type, mounted on insulators and steel frame with operating mechanism worked from ground level complete in all respect such as gun metal moving contacts and spring loaded gun metal fixed jaws, knife copper jumper strip etc, suitable for 1100 Volts grade, with 9 insulators of rating upto 200 Amps complete all as specified and as directed. |
| 33 | Dismantling Drop Out expulsion fuse single pole complete all as specified and directed . |
| 34 | Supply and fixing Drop Out expulsion fuse unit suitable for 11KV of capacity up to 100Amps mounted on MS channels complete with two post insulator 11KV including required hard ware like clamps nut bolts washers synthetic bonded fuse barrels etc all as specified and directed. |
| 35 | Taking Out existing old / Unserviceable LT UG, PVC XLPE Insulated strip/wire armored multistranded aluminium conductor cable from trench/duct/pipe etc incl GI pipe of any size complete all as specified and directed. |
| 36 | Materials and labour for sand filling around the cable with approved quality coarse sand for sand cushioning of under ground cableincludingspreading and punning down complete all as specified and as directed. Note:- Punned down thickness shall be measured. |
| 37 | Materials and labour for brick protection cover to underground cables with sub class ‘B’ over burnt brick of size 23 X 11.5 X 7.5 cm, (locally available), laid dry and flat abutting each other with gaps not exceeding 10mm complete all as specified and as directed. |
| 38 | Laying onlyold serviceable bricks retrived from above item No-35 for mechanical protection to cables all as specified and directed by Engr-in-charge. |
| 39 | Taking down unserviceable /damaged XLPE HT cable of any size and any type from trenches /poles/wall etc after necessary electrical disconnectin complete all as specified and directed. |
| 40 | Supplying, Laying connecting & testing XLPE insulated, PVC sheathed, armoured HT electric power UG cable (heavy duty with stranded aluminum conductor)of size 95 Sqmm, 3 core, 11000 Volts(Earthed) grade, with FRLS PVCouter sheathed, conforming to IS-7098 (Part-II) laid through duct/ pipe / in trench etc. with cable glands and including suitable size of aluminium lugs complete all as specified and as directed. Note : Earth work, brick protection and sand cushioning and GI Pipe Shall be measured and paid separately under respective item. |
| 41 | Supplying, Laying connecting & testing XLPE insulated, PVC sheathed, armoured LT electric power UG cable (heavy duty with stranded aluminum conductor)of size 95 Sqmm, 3.5 core, 1100 Volts(Earthed) grade,with FRLS PVCouter sheathed, conforming to IS-7098 (Part-II) laid through duct/ pipe / in trench etc. with cable glands and including suitable size of aluminium lugs complete all as specified and as directed. Note : Earth work, brick protection and sand cushioning and GI Pipe Shall be measured and paid separately under respective item. |
| 42 | Ditto all as per item ser No 41 here-in-above but of capacity 70 Sqmm, 3.5 core. |
| 43 | Ditto all as per item ser No 41 here-in-above but of capacity 50 Sqmm, 3.5 core. |
| 44 | Ditto all as per item ser No 41 here-in-above but of capacity 35 Sqmm, 3.5 core. |
| 45 | Ditto all as per item ser No 41 here-in-above but of capacity 25 Sqmm, 3.5 core. |
| 46 | Ditto all as per item ser No 41 here-in-above but of capacity 16 Sqmm, 3.5 core. |
| 47 | Ditto all as per item ser No 41 here-in-above but of capacity 10 Sqmm, 3.5 core. |
| 48 | Relaying of existing LT cable of any size in the trenches/duct/pipe etc incl cable lugs, cable glands etc complete all as specified and directed |
| 49 | Supply and fixing end termination joint kit for HT cable, heat shrinkable, outdoor type with jointing material & accessories suitable for voltage 11 kV (Earthed), 3 core95 sqmm complete all as directed by Engr-in-charge. |
| 50 | Supply and fixingstraight through joints heat shrinkable type including joint kits and labour complete for making joints suitable for UG cables of the following sizes incl taking down old damage cable and taking up loop and testing complete all as directed by Engr-in-charge. |
| 51 | Ditto all as per item ser No 50 here-in-above but of capacity 150 Sqmm, 3.5 core. |
| 52 | Ditto all as per item ser No 50 here-in-above but of capacity 120 Sqmm, 3.5 core. |
| 53 | Ditto all as per item ser No 50 here-in-above but of capacity 95 Sqmm, 3.5 core. |
| 54 | Ditto all as per item ser No 50 here-in-above but of capacity 70 Sqmm, 3.5 core. |
| 55 | Ditto all as per item ser No 50 here-in-above but of capacity 50 Sqmm, 3.5 core. |
| 56 | Supply and fixing end termination joint kit heat shrinkable type suitable for UG cable including joint kits for making joint suitable for aluminium conductor of size 70 to 120 sqmm 3.5 including preparation of damaged cable and taking up loop and testing complete all as directed by Engr-in-charge. |
| 57 | Supply and Laying 50mm bore GI tubing light grade with all fitting for passing of cable under road, on wall or on pole with and incl clams, nuts, bolts etc incl taking down old unserviceable GI tubing of any size incl cutting, chases to wall/ floor and making good surface complete all as directed by Engr-in-charge. |
| 58 | Supply and Laying 80mm bore GI tubing light grade with all fitting for passing of cable under road, on wall or on pole with and incl clams, nuts, bolts etc incl taking down old unserviceable GI tubing of any size incl cutting, chases to wall/ floor and making good surface complete all as directed by Engr-in-charge. |
| 59 | Disconnecting, taking down distribution transformer outdoor type 11 kV /415 volts having capacity 63 kVA, 100 kVA, 315kVA and 500 kVA, transportation to the workshop for repairs including opening of transformers cover, draining of oil, de-tanking of core and coil assembly, cleaning, washing of dust and dirt from all parts including core, tank and cooling tubes radiators etc., joint inspection for estimate, replacement of defective parts, assembly, stage inspection, re-tanking, oil filtration/ dehydration, filling of dehydrated oil and fresh oil and testing the repaired transformers for all the routine tests as per IS 2026 (Part 1): 2011 with latest amendments complete all as specified and directedby Engr-in-charge. Note: - (a) Transformer oil shall be drained out by the contractor in suitable capacity mild steel drums to be arranged by the contractor. The said drained out transformer oil shall be refilled in the transformer duly dehydrated after repair and the cost thereof shall be included in unit rate quoted against the respective item of this schedule. Dehydration of oil shall be measured and paid separetely. (b) Rewinding of both HT & LT coil shall be measured and paid for separately under respective item of this schedule. (c) Transportation charges for transportation of transformer from site to workshop and after repair, workshop to site shall be borne by the contractor and cost thereof shall be deemed to be included in the unit rate quoted for this item. (e) The said transformer shall be repaired in reputed workshop as approved by the GE. (f) Testing of transformer after repair shall be carried out as per IS 2026 (Part 1): 2011 and the cost of testing shall be deemed to be included in unit rate quoted against this item. (g) The IR value of the dried winding before inserting the core in the shell shall be measured and recorded. |
| 60 | Supply and fixing of porcelain HT bushing vitreous, brown colour, 11 KV grade along with a set of oil seals & copper alloy stud, nuts, washers etc. including dismantling existing HT bushing with copper alloy rod and disconnection of electrical connection, of suitable size for primary side (HT side ) of outdoor type 11 KV for 63 kVA upto and including 500 kVA distribution transformer of any make complete all as specified and directedby Engr-in-charge. |
| 61 | Supply and fixing of porcelain LT bushing vitreous, brown colour, 440 V grade along with a set of oil seals & copper alloy stud, nuts, washers etc. including dismantling existing LT bushing with copper alloy rod and disconnection of electrical connection, of suitable size for Secondary side (LT side ) of outdoor type 440V for 63 kVA upto and including 500 kVA distribution transformer of any make complete all as specified and directedby Engr-in-charge. |
| 62 | Supply and fixing for replacement of gasket including arresting leakage oftransformer oil by after draining out of transformer oil and refilling after replacement including disconnecting power supply complete all as specified and as directed for distribution transformer outdoor type 11 kV /415 volts having capacity upto 500 kVA complete all as specified and as directed by Engr-in-charge. |
| 63 | Supply only HT coils made out of super enamelled HT copper, winding wire of transformers all as per munufacture, design & no of turns and guage of wire for transformer having capacity 63 to 500 kVA all as specified and directed. Note :- Coil to be replaced shall have same number of turns, gauge insulation value matching with manufacturer"s design by Engr-in-charge. |
| 64 | Supply only and fixing LT coils made out of super enamelled LT copper, winding wire of transformers all as per munufacture, design & no of turns and guage of wire for transformer having capacity 63 to 500 kVA all as specified and directed. Note :- Coil to be replaced shall have same number of turns, gauge insulation value matching with manufacturer"s design by Engr-in-charge. |
| 65 | Supply only and fixing HT coils made out of super enamelled HT Alunimium winding wire of transformers all as per munufacture design & no of turns and guage of wire for transformerhaving capacity 63 to 500 kVA all as specified and directed. Note :- Coil to be replaced shall have same number of turns, gauge insulation value matching with manufacturer"s designby Engr-in-charge. |
| 66 | Supply only LT coils made out of super enamelled LT Alunimium winding wire of transformers all as per munufacture design & no of turns and guage of wire for transformerhaving capacity 63 to 500 kVA all as specified and directed. Note :- Coil to be replaced shall have same number of turns, gauge insulation value matching with manufacturer"s designby Engr-in-charge. |
| 67 | Materials and labour for spray painting of transformers (any type power or distribution)) of capacity upto and including 500 kVA ( in situ ) outdoor type, installed and located at different sites in scattered area under the AGE E/M Vairengte including the following: - (a) preparation of old surfaces by cleaning, scrapping, rubbing/ polishing etc. complete. (b) painting with two coats of Duco paint (Grey) paint of approved make / quality all as directed at site. (c) Writing the SM MES No of transformer on MS body of transformer all as directed . |
| 68 | Dehydration and filtration of existing transformer/Servo Stablizer oil of transformer at different location with filtration machine and heating system to get the minimum di-electric strength of oil 50 kV minimum without disturbing the power supply system and refilling/ topping up /replacement of unserviceable transformer oil conforming IS-335-1993 complete all as specified and as directedby Engr-in-charge. Note: (a)Transformer oil required extra for filling/topping up shall be measured and paid separately under the relevant items of this schedule (b) cost of oil testing shall be deemed to be included in the unit rate quoted for this item and T&P Shall be aranged by contractor. |
| 69 | Supply only new transformer oil of dielectric strength notless than 60 kV and conforming to IS-335 of 1993 for filling/ topping up oil of transformer up to desired level complete all as specified and directed. |
| 70 | Supply and fixing breather including silica gel, indicating type, 4 to 6 mm standard size of the particle, blue colour for transformer of capacity from 63 to 500 kVA incl removing of old breather complete all as specified and directed. |
| 71 | Supply and fixing as in repair HT lightening arrestor as in repair, expulsion type with all fittings, transmmission class discharge capacity 65 kilo Amps suitable for 11 KV complete all as specified and directed . |
| 72 | Materials and labour in repair for replacing danger notice plate of 1.6 mm thick mild steel sheet, vitreous enamelled white, with letters, figures and conventional skull and bones in signal red colour and fixed with mild steel clamps, bolts and nuts of approved size, for HT 11000 Volts, 250 mm X 200 mm complete all as specified and as directedby Engr-in-charge. |
| 73 | Materials and labour in repair for replacing for danger notice plate of 1.6 mm thick mild steel sheet, vitreous enamelled white, with letters, figures and conventional skull and bones in signal red colour and fixed with mild steel clamps, bolts and nuts of approved size, for LT 1100 Volts, 200 mm X 150 mm complete all as specified and as directed . |
| 74 | Dismantling of upper cover of servo Voltage stabilizer of capacity 100 KVA after disconnecting all electrical connections for repair, re-winding of R-phase boosting transformer after dismantling defective copper conductor from core and re-wind the same with fresh copper conductor, insulate with "F" class insulator, replacement of worn out parts suitable for 100 KVA servo satablizer cleaning of dust and replacement with new complete wiring with FRLS copper conductor of suitable size in proper layout and tight with tie, and re-assemble the same with core complete all as specified and directed by Engr-in-charge (Note : (a)New parts will be measured and paid separately under relevant items except replacement of old wiring which is deemed to be included in the quoted rate of item (b) Oil shall be drained out by the contractor in suitable capacity mild steel drums to be arranged by the contractor. The said drained out oil shall be refilled in the stablizer duly dehydrated after repair and the cost thereof shall be included in unit rate quoted against the respective item of this schedule. Dehydration of oil shall be measured and paid separetely. (c) Transportation charges for transportation of transformer from site to workshop and after repair, workshop to site shall be borne by the contractor and cost thereof shall be deemed to be included in the unit rate quoted for this item. (e) The Servo satblizer shall be tested at workshop at presence of Engr-in-Charge or person detail by Engr-in-Charge/GE also the testing shall be done at site before commissioing of Servo Satblizer. (e) The said Servo stablizer shall be repaired in reputed workshop as approved by GE. |
| 75 | Supply onlydimmerstate (Variac) suitable for servo voltage stabilizers of capacity 100 KVA with proper alingement complete all as specified and directed. Make- Vintec /Sinetrac/ ITE Gurgaun/ Powerworks/M/S Sai electricals/volina. |
| 76 | Supply onlyservo motor 20 Kg Torque suitable for servo voltage stablizer of capacity 100 KVA complete all as specified and directed. |
| 77 | Supply onlyof Servo controller and complete modification, control device, control protection etc (inclElectronic sensing card ( PCB), Electronic Sensing transformer, RC Network, Box for RC network etc) suitable for 100 KVA servo voltage stabilizers complete all as specified and directed. |
| 78 | Supply onlyvoltmeter 0-300V suitable for 100KVA to600KVA servo voltage stabilizer complete all as specified and directed. |
| 79 | Supply onlyCarbon bush of suitable size upto the capacity of 100 KVA complete all as specified and as directed by Engr-in-charge. |
| 80 | Supply only Indicators of RYB of suitable size upto the capacity of 100 KVA and 600 KVA voltage stabilizer complete all as specified and as directed by Engr-in-charge. |
| 81 | Materials and labour for Painting of Servo stablizer after cleaning the body surface by rubbing with emery Paper to remove oil stains, dust etc andapplying two coat and of synthetic enamel paint by spray paint incl writing SM No/MES No , capacity of Stablizer of 600 KVAcapacity all as directed by Engr-in-Charge |
| 82 | Materials and labour for earthing complete with galvanised iron earth plate electrode 600 mm x 600 mm x 6 mm thick, burried directly and preferably vertically in ground, earth pit not less than 2.25 Mtr deep below ground level with top edge of the plate not less than 1.5 m below ground level connetced to earthing lead of 32mm x 6mm galvanised mild steel strip by means of nuts, bolts, check nuts and washers made of galvanised iron or steel earthing lead to be protected by galvanised iron pipe of 40mm bore (light grade) and other end connected to earthing test point or lightening arrestor or main controlling switch as directed including providing funnel with 20mm bore galvanised iron pipe (medium grade), wire mesh, charcoal or coke and common salt in alternate layer of 15cm (compacted thickness) all round the earth electrode, concrete earth pit in PCC (1:3:6) type C-1 (with 20mm graded aggregate), 50mm thick precast RCC (1:2:4) cover slab (re-inforced with 8mm dia TMT bar @ 15 cm C/C bothways and suitable handle made of 10mm dia) including necessary earth work in excavation, returning filling and removal of surplus earth upto a distance not exceeding 50 m etc all as shown on electrical plate No. 3 of MES Schedule Part-I(2009) complete including testing on completion including taking out unserviceable earthing plate and accessoriesall as specified and as directed. (Note: Earth lead upto a length of 7.50 m from earthplate shall be deemed to be included in quoted rate.) |
| 83 | Supply and fixing of Aluminium strip 25 mm x 3.15 mm for earthing complete with saddles and fixing screws for fitting the strip for earth continuty conductor up to test points complete all as specified and directed by Engr-in-charge. |
| 84 | Supply and fixing of copper strip 20 mm x 3.15 mm for chemical earthing complete with saddles and fixing screws for fitting the strip for earth continuty conductor up to test points complete all as specified and directed by Engr-in-charge. |
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