Military Engineer Services-MES has published Tender For Repair Maintenance Of Ht Network Including Vcb, Transformers And Other Connected Items At Ins Mandovi. Submission Date for this Tender is 13-04-2024. Transformer Supply Tenders in vasco Goa. Bidders can get complete Tender details and download the document.
| Sr No | CorrigendumDate | Corrignedum | CorrigendumType | NewSubmissionDate |
| 1 | 06-Apr-2024 | Bid Auto Extn Corrigendum | Bid Auto Extn Corrigendum | 13-04-2024 |
| Sl. No. | Item Description |
| 1 | Excavation in trenches n.exc 1.5M wide & n.exc 1.5m in depth for laying & removingof cable of any sizes and getting outsoft disintegreted rock/soil/ laterite rock all as specified and directed. |
| 2 | Returning filling excavated earth work including spreading, levelling, watering and well ramming in layers n.exc 25cm thick in any strata all as specified and directed. |
| 3 | Removing excavated disintegarted rock/soil to a distance n.exc 50m, depositing where directedat a level n.exc 1.5M above the starting point all as specified and directed. |
| 4 | Supply/ Lay dry river sand /m -sand in trenches for cable protection all as directed all as specified and directed. Note : Punned thickness only will be measured & Paid |
| 5 | Supply and lay un-reinforced precast concrete ISI marked cable covers, class HVP , type- I with peak, size 300mm x 180mm x 40mm, all as specified and directed. |
| 6 | Supply and fix in trench/on wall in repairs GItubing light grade for road crossing and cable protevtion of the following sizes |
| 7 | (a) 80 mm dia |
| 8 | (b)100 mm dia |
| 9 | M & L for PCC 1:4:8 type D-2 using 40 mm graded stone aggregate including use and waste of form work of concrete for pole and stay foundation all as specified and directed. |
| 10 | M & L for PCC 1:3:6 type C-1 using 20 mm graded stone aggregate including use and waste of form work for pole coping/ any description all as specified and directed. |
| 11 | Earthing complete with galvanised steel earth plate electrode of size 60cm x 60cm x 6.0 mm thick as per IS 3043 of 1987 buried directly in to the ground ( earthpit not less than 2.25 m deep below the ground level) with top edge of the plate not less than1.5 meters below normal ground level, connected to the galvanised earth lead by means of bolts , nuts check nuts and washers of galnanised iron or steel using GI strip32 x 6 mmas earthing lead as shown in electric plate No -5 of SSR- Part-1 connected to earth test point all as specifed or indicated including testing on completion and necessary excavation and earth work in soft/loose soil, returning filling, disposal of surplus soil, earth pit in PCC 1 :3:6 type C-1 using 20 mm graded stone aggregate, pit, funnel, 15 mm diia meduim grade watering pipe, 40 mm dia GI light grade earth lead protection pipe, CI frame and cover , wire copper lugs etc mesh, charcoal and common salt in alternate layer complete all as specified and directed by Engineer In Charge. |
| 12 | S & F in repairs Galvanaised Iron cross arms channel, bracing, support, clamps etc fabricated structured steel, sections, including nuts, bolts, washers etc and cutting to required length beat to any shape drilling holes, fixed on poles or jointed by means of elect welding complete incl painting with 2 coats of aluminum paint over a coat of red oxide primer after preparation of surfaces incl taking down / dismantling the old items complete all as directed. |
| 13 | S & F in repairs Disc type porcelain vitreous, brown or white insulator suitable for 11 KV HT working Pressure of size 145 mm height, 255 mm dia , including. one galvanised mild steel spindle, two galvanised iron washer and one GI nut complete all as directed. |
| 14 | S & F in repairs Pin type porcelain vitreous,brown of white insulator suitable for 11 KV HT of working pressure of size 150mm height, 150mm dia, including one galvanised mild steel spindle, two galvanished iron washer and one GI nut complete all as directed. |
| 15 | S & F in repairs incl testing of swing out explusion fuse isolated assembly with fuse carrier out door type 11 KV supply 200 Amp( DO Fuse ) all as specified and directed. |
| 16 | S & F transmission class type droup out fuses 11000 volts rating 25-50 amps,outdoor type all as specified and directed. |
| 17 | Supply & Replacement of switch air break gang operated out door type (conforming to IS specifications) 11 KV, 200 Amps capacity triple pole mechanically operated suitable for operation from ground level and for vertical mounting complete with HT insulator 12 Nos, channel, GI pipe light grade/ operating rod with pad lock arrangement and out door drop-out expulsion fuse assembly with fuse carrier fitting all as specified and directed . |
| 18 | S & F in repairs lightning arresters expulsion type complete with all fittings transmission class, discharge capacity 65 kilo amps, suitable for 11 KV all as direcetd. |
| 19 | Supply and fix cable jointing kit for 11KV grade cable for Outdoor termination heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured Aluminium conductor cable of size upto 120 sqmm all as specified and directed. |
| 20 | Supply and fix cable jointing kit for 11KV grade cable for Indoor termination heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured Aluminium conductor cable of size up to 95 sqmm all as specified and directed. |
| 21 | S&Fin replacement of cable jointing kit for 11 KV (earthed) grade cable for straight through heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 95 sqmm.complete all as specified and as directed. |
| 22 | Detecting of fault of HT UG cable of any size and core with help of vehicle mounted cable fault locator device including detecting exact location of cable fault for rectification complete all as specifiedand as directed. Note:- Cable fault locator machine shall be arranged by the contractor under his own arrangement as per direction of Engineer-in-Charge. |
| 23 | Supply & Laying in replacement , testing and commissioning XLPE cable , PVC insulated, screened PVC bedded galvanised steel strip or wire armoured electric power cable, heavy duty with aluminium conductor 11000 Volts grade (earthed), 3 core 95 sqmm laid in trenches / floor / duct / fixed on poles / through GI tubing in different locations / areasincluding taking out old HT cable complete all as specified and directed by Engr in Charge. |
| 24 | S & F in repairs post insulator suitable for 11 KV HT working pressure in GOD / DO arrangements of any description all as directed. |
| 25 | Repairing / Servicing the Air break isolating switch HT 11 KV 200/400 Amps by replacingthe defective major spares including provn of minor bolts nuts etc all as specified. Note :- Major spare will be measured & priced seperately under relevant item of Sch"A" item No. 31 |
| 26 | Supply only 11 KV Airbreak switch spares all as directed. |
| 27 | (a) Male contact/moving Contact Blade |
| 28 | (b) Female contact/Fix Contact Jaw |
| 29 | (c) Tinned copper Flexible jumper 200A/400 A |
| 30 | (d) MS jumper carrier |
| 31 | (e) Back Connector plate |
| 32 | (f)Petroleum Jelly |
| 33 | Supply & replace All aluminium conductor and cutting to required length for fixing as jumpers at 4/6/8 pole structures/ substations along with suitable lugs, nut & bolts of suitable size complete all as specified and as direcetd. |
| 34 | Supply & fix non metalic PVC rigid conduit pipe over All Aluminium conductor specified in item no 25 above all as directed by Engineer-in-charge. |
| 35 | Dehydration / filteration of transformer oil by means of centrifugal filteration plant to achieve the specified dielectric strength upto 50 KV at 2.5 mm gap in existing position of transformer of any capacity at various sub station complete all as specified and as directed. Note:- Cetrifuging machine shall be arranged by the contractor under his own arrangement as per requirement decided by Engineer-in-Charge. |
| 36 | Supply and topup transformer oil of approved quality as per IS No : 335-1993 low viscosity type having dielectric strenght of 50 KV in 2.5 mm gap for toping up complete all as specified anddirected. |
| 37 | M & L for preparation of old cement coated surface, cleaning the surface of the RCC pole (HT) 11 Mtr long in pole structures above theground level incl coping area with 2 coats of ACC exterior Emulsion paint over a coat of cementprimer after preparation of surface including 12 cm black paint around the polenumbers/letters in white columns all as directed. |
| 38 | S & F in replacement Breather unit with superior quality blue colour silica jel,to maintain the exact value ofgrade for transformer of capacity 100 KVA to 250 KVA, including taking down unserviceable complete all as specified. |
| 39 | Allas per item No 30 abovebut above 250 to 400KVA Transformer |
| 40 | S&F in replacement of 11 KV HT ceramic bushing of transformer 11 KV/433 volt indoor or outdoor of various capacities as per site requirement including testing complete all as specified and as directed. |
| 41 | S&F in replacement ofceramic bushing LT side of transformer 11 KV/433 volt indoor or outdoor of various capacities ie upto and including 160 KVAincluding testing complete all as specified and as directed . |
| 42 | S&Fin replacement of ceramic bushing LT side of transformer 11 KV/433 volt indoor or outdoor of various capacities ie above 160 KVAincluding testing complete all as specified and as directed. |
| 43 | S&F in replacement of11 KV HT bushing rod only of brass studs both ends threaded including nut, check nut and washer of transformer 11 KV/433 Volt indoor or outdoor of various capacity including porcelain insulators,gaskets including testing complete all as specified and as directed. |
| 44 | M&L applyingtwo coat of aluminium paint over a coat of redoxide paint includingpreparation ofold steel surfacesofsteel structure frame for 33 KV Isolator, DO fuse, TCs, VCBs, PTs, LA , gantry , main bus supports at 33/11 KV yard substation at INS Mandovi complete all as specified and as directed. |
| 45 | Supply and fill new silica jel of require quantity superior quality in the breather unit of transformer upto 400KVA transformer incl taking out the old unserviceable one all as directed |
| 46 | M&Lfor anti-climbing device spike type fabricated out of MS bar ( round"squar and flat) including nuts, bolts, washers and welding in two halves made toshape to suit the cross section of the pole HT/LT |
| 47 | M&L for Danger notice plate of 1.6mm thick mild steel sheet vitreous enamelled white with letters figures and conventional skull and bones in signal red colour and fixed with MS clamps, bolts and nuts of approved size for HT,25X20X20mm size all as specified and directed. |
| 48 | M&L for Minor welding work/patch work for any type and any capacity of transformer including drain out and refilling oil,and painting with two coats of synthetic enamel paint to all surfaces of the transformer over a coat ofprimer to welding/patch work portions for transformer of capacity up to 400 KVA all as specified and directed. |
| 49 | M & L for painting of transformer outside of body completely, including cleaning the body scrubbing thoroughly and applying one coat of synthetic enamel existing shade of paint to transformer of capacity up to 400 KVA all as specified and directed. |
| 50 | M & L for fixing of lugs (3 P + N) on LT cable to connecting on LT side bushing by removing old lugs fixed on LT busing complete for 300 to 400 Sqmm 3.5 core cable all as specified and directed. |
| 51 | Supply and fixing in repair Temp guage 0-300 degree centigradeall as specified and directed. |
| 52 | M & L for graded coarse aggregate (broken stone or boulders) of size 40 mm in sub - station yard/GOD/ Sub Stn for layingall as directed and specified. |
| 53 | Servicing and repairing/carrying out for maintenance of 11 KV/440V transformer including the following works for transformer upto 400 KVA capacity as details here under including the following complete all as specified and directed by Engr in Charge:- (a)Removing from platform and disconnecting electrical connection from HT and LT side including transporting the transformer to workshop including loading and unloading complete or to be repaired at site as per requirement. (b)Dismantling the transformer, drain out transformer oil, lift the top coper by opening all nuts, bolts with the help of T&P Chain pully , tepoy at site or in workshop as required for carrying out the following repair/replacement works :- (i)Replacing HV/LV insulator with studs nuts & washers (ii) Replacing HT & LT side bushing porcelain insulator (iii)Brass studs with nuts and washer of HT or LT bushing |
| 54 | (iv)For detection of fault inside the transformer in concern to winding defect, any short etc and intimation to JE/ Engr in Charge for further direction. (c)Re-assembling all dismantled parts including porvision of new gaskets, nuts, bolts washers etc , refilling with drained out transformer oil and transporting back to original location including electrical connection, testing and commissioning all as directed Notes : (a)Oil filteration, supply of new oil will be measured and paid separately. (b)All petty parts including nuts, bolts, gasket, minor welding, oil for cleaning, greasing etc any other minor works and material (other than listed separately)required for reassembling all dismantled parts are deemed to be included in the rates. (c)The rates for transport and lifting of transformer by Crane shall be deemed to be included in this rates. |
| 55 | Rewinding of unserviceable HT/ LT winding with ISI marked new double paper covered copper wire/strip wound coils of capacity up to 400 KVA transformerwith suitable size/gaugeto match with existing working capacity of the transformer and all as per manufactures design/specifications including provision of Class ‘E’ insulation and fixing the coils in core assembly complete all as specified and directed. |
| 56 | Supply & Replacement of cork sheet gasket 6 mm thick superior quality on top cover plate of the transformer capacity 100 to 400 KVA Transformers |
| 57 | Supply & Replacement of LT bush assembly brass studs complete with double check nuts, washers and oil seal all accessories with bushing insulators suitable for transformer capacity 100 KVA to 160 KVA. |
| 58 | Supply & Replacement of LT bush assembly brass studs complete with check nuts, washers oil seal etc all accessories with bushing insulators for transformer capacity 200 KVA to 400 KVA. |
| 59 | M & L for cutting the grass &trimming of bushes around the GOD, two pole structure, Four pole structure, LT Panel etc removing the retrieved material out of MoD land all as directed by the Eng-in-Charge. |
| 60 | Material and labour for perodical servicing ,repairing & testing of11 KV indoor VCB including relay and control panelof capacity 800/400 Amps andrating 36 KVcomplete as details mentioned as under:- (a) Details of periodical servicing of breaker :- (i) Checking of Closing/Tripping coil assembly (ii) Adjustment of mechanism if required. (iii) Clean the circuit breaker to remove dust and dirt. The envelope of the vacuum interrupter and insulating materials shall be wiped with a clean cloth. (iv) Checking the contact for wear. Replace if the contact piece has worn out. (v) Apply a small amount of oil to rotary sections, sliding surfaces, pins, coupling section, etc.use grease for the operating shaft and bearings, and machine oil for other parts. |
| 61 | (vi) Check for rust and wear. (vii) Checking of spring charge mechanism (viii) Visual check for rust and deformation. (ix) Check for loosened bolts and nuts, broken spring washers and snap pins etc. (x) Check for loosened connections, rust, damaged lead wires. (xi) Checking of control circuit & tighten the connections if any. (xii) Check close & trip coil. (xiii) Replacement of Dashpot/shock absorbers . (xiv) Replacement ofcarbon brush of spring charging motor (xv)Cleaning ofporcelain bushing (xvi)Checking of limit switch |
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