Tender For Repair And Maintenance Of Ht Installations And Connected Works At Jorhat Mil Stn.; 1 Specific Notes:(a)One HS Electrician and one helper should be available for attendingday to day complaints on all days including/Sunday and holiday from 09.00 hrs to 15.00 hrs . (b) Indls should be in possession of all required tools for rectification of complaints . (c)Labour charges and cost of required tools is deemed to be included in thequoted rate..(d) Work shall be executed by the authorised service mechanic/Electrician of manufacturer,After satisfactorily completion of servicing of HT Transformer/equipmentIf any fault occurs upto completion of contract period should be attended by concerned rep within stripulated time frame without any failure , quoted rates is deemed to be included all such charges.(e) Item no 1 to 67If any above HT Equipment and connected items become breakdown, the contractor shall locate the problem/fault at site within 12 hours on intimation by JE/Engineer-In-Charge and ensure that the fault and rectified within 48 Hours , failing which an amount of Rs 200 /- per hour will be recovered as penal recovery from any payment due to contractor after expiry of 48 hours.) 2 Dismantling insulators of any type and any size from HT 2/4 pole structures/poleafter taking proper electric shut down from Engg in Charge complete all as specified and as directed. 3 S & F Pin type, porcelain, vitreous, white, brown or green insulator including one 19 mm dia galvanized mild steel spindle, two galvanized iron washers and one galvanized iron nut, 150mm height, 150mm dia with top groove suitable for 11000 volts grade after taking proper electric shut down from Engg in Charge and restored electric supply after completion of each job and maintaining their recordcomplete all as specified and directed. 4 S & F Disc type insulator, porcelain, vitreous 145mm high and 255mm dia ball and socket type, white, brown or green,two in seriesassembly for tension with tension GI clamps, Nuts, Bolts and washer etc suitable for working pressure 11000 volts grade after taking proper electric shut down from Engg in Charge and restored electric supply after completion of each job and maintaining their record complete all as specified and directed. 5 Dismantling cross arms of mild steelchannel or angle sections etc. complete and removing unserviceable materials fromsite(s) complete all as specified and directed. 6 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 including two coats of aluminium paint over a coat of red oxide zinc chrome primer including preparation of surfaces complete all as specified & as directed. 7 Dismantling of ACSRor AAC conductor from poles of any size & capacity and unserviceable materials removing from site(s) complete all as specified and as directed 8 M&L for Aluminium conductor steel reinforced (ACSR) of size as per existingfor making connection at transformer, LAs, CT , PT, GOD,s & Drop out fuses etccomplete all as specified and directed. 9 M & L for Stay assemblyhaving stay rod dia 20 mm complete with all accessories such as mild steel galvanized flat iron stay clamp, all as shown in electrical plate No 1 of SSR Part-I complete all as specified andas directed.[Note : Excavation, earthwork and cement concrete work shall be measured and paid separately under relevant Items of this schedule]. 10 Loop Insulator for stay assembly Overall dimensions 90 x 140 mm & clearance of hole 25.5 mm, 11 7/4 mild steel galvanized stay Strand 12 M&L in replacement for Danger notice plate of 1.6mm thick mild steel sheet, vitreous enameled white in 11000 volts, 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, 25 x 20 cm size complete all as specified and directed. 13 M & L in replacement for switches air break switch, gang operated, triple pole, 11000 Volts grade and current rating up to 400 Amps, mechanically operated, mounted on insulator of size 150 mm dia and 150 mm hight and steel frame with operating mechanism worked from ground level having 3 Nos 11KV Post Insulators per phase with locking arrangements etc. and equipment shall be confirming to IS 9921 (Part I to V) including necessary electrical connections after taking down the old unserviceable GOD switches with all parts complete all as specified and as directed. 14 M&L in replacement forHT drop out expulsion fuse unit suitable for 100 Amps Capacity at 11 KV ,single pole (two post insulators per pole) with HT barrel fuse with holder including necessary connection to ACSR conductor of suitable size after taking down the old unserviceable drop out switches complete all as specified and as directed. 15 M&L for Two coats of Aluminium paint over a coat of red oxide zinc chrome primer including preparation of surfacesby spray painting external surfaces ofsteel tubular poles (HT/LT)/GI pipes /Panels at various Sub stations with approved colour code complete all as specified and as directed.Note:Colour code of eqpt/substation VCBs /Panels area for painting atshall got approved by GE 16 M&L for weather coat overincluding preparation of surfacesby spray painting external surfaces ofPCC poles (HT/LT) at various Sub stations with approved colour code complete all as specified and as directed.Note:Colour code of polesfor painting atshall got approved by ENgr-in-charge. 17 Taking up carefully defective HT UG cable of cross sectional area 95/120 Sqmm 3core from existing HT pole/HT panels/trenches/along wall/pipes/across drain/roof etc.after disconnecting elect supply, from both endomplete all as specified and directed. 18 Laying only/Re-rootingof old taking downHT underground cable from trenches / pole etc, aluminium conductor of size 95/120 sqmm 3 core all as specified and directed. 19 Laying only PCC cable cover for HT UG cable, of any description , all as specified and directed by Engr-in-Charge. 20 Laying only Bricks for HT UG cable, of any description , all as specified and directed by Engr-in-Charge. 21 Supply ,laying, jointing, commissioning & testing HT UG cable of size 95 Sqmm 3 core, 11000 volts (earthed), aluminium conductor, XLPE insulated, earthed, screened, PVC bedded, armoured heavy duty electric cable conforming to IS-7098 (Part -II) 1985 with latest amendments drawn through pipe or laid in trenches, fixed on poles etc. including taking out the old unserviceable ones and stored as and where directed complete all as specified and as directed. 22 M&L for fixing in replacement of lightening arrestersset ( Set of 03 nos), non linear 12 KV, metal oxide type, distribution class 5 KA rupturing capacityfor outdoor usewith conforming to IS : 15086 PT- I of 2001, completeand suitable for 11KV supply system including taking down the old unserviceable ones complete all as specified and as directed. 23 Supply, jointing and testing in replacement of HT heat shrinkable jointing kit straight through type for 11000 Volt grade 3 core XLPE insulated Earthed cableoutdoor type complete with jointing material and accessories of size95 Sqmm including taking down old unserviceable jointing kit complete all as specified and directed. 24 Supply, jointing and testing in replacement of HT cable end jointing kit for 11000 Volt grade cable cold shrinkable outdoor type complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable (Earthed) of size95Sqmm including taking down old unserviceable ones complete all as specified and directed. 25 Supply, jointing and testing in replacement of HT cable end jointing kit for 11000 Volt grade cable cold shrinkable indoor type complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable (Earthed) of size95 Sqmm including taking down old unserviceable jointing kit complete all as specified and directed. 26 Supply and laying in replacement of synthetic Rubber insulated mats 2.5 mm thick for voltage upto 11 kv for electrical purpose as per IS 15652-2006, (superseding IS 5424) suitable for electrical shock safety of sizes 2m x 1m 27 Supply and laying in replacement of synthetic Rubber insulated mats 3 mm thick for voltage upto 33 kv for electrical purpose as per IS 15652-2006, (superseding IS 5424) suitable for electrical shock safety of sizes 2m x 1m 28 Excavation in trenches, for foundation of poles, stays or for laying of cables, not exceeding 1.5 mtr wide and not exceeding 1.5 mtr in depth and getting out as in soft / loose soil complete all as specified & directed. 29 Returning, filling in, including spreading, leveling, watering and well ramming in layers not exceeding 25 cm thick in soft/loose soil completer all as specified and directed. 30 Removing excavated material(soil) not exceeding 50m and depositing where directed at a level not exceeding 1.5m above the starting point complete all as specified and directed 31 M & L of Supplying and laying reinforced precast concrete cable cover, class EHV, type 1 with peak, size 300mm x 230mm x 40 mm over burnt bricks laid dry and flat across the axis of cable, abutting each other with gaps between adjacent bricks not exceeding 10mm complete all as specified & as directed. 32 M&L for sand cushioning to underground cable in trencheswith clean dry river sand for protection of cable complete all as specified and directed.( punned thickness will be measured). 33 M&L for boring /drilling by machines/manual horizontallyunder the road in any type of soil without cutting /disturbing the existing road and inserting GI pipe of any size for drawing the cable. complete all as specified & as directed.(GI Pipe shall be measured and paid separately). 34 M&L for cutting the road/ hard standing to a size not exceeding 30 cm in width not exceeding 75 cm in depth for laying/ removal of HT/ LT UG cable or cable protection pipe of any size including making good the disturbed surfaces by using PCC(1:4:8) type D2 (using 40 mm graded aggregates) for 100 mm thick on top including fair finishing complete all as specified and directed. 35 M & L in replacement for 40 mm dia GI pipe ‘light grade’ with all fittings for protection of cable laid on road crossing, drain crossing, laid in floor or fixed to iron structures /poles complete all as specified and directed. 36 M & L in replacement for 50 mm dia GI pipe ‘light grade’ with all fittings for protection of cable laid on road crossing, drain crossing, laid in floor or fixed to iron structures /poles complete all as specified and directed. 37 M & L in replacement for 80 mm dia GI pipe ‘light grade’ with all fittings for protection of cable laid on road crossing, drain crossing, laid in floor or fixed to iron structures /poles complete all as specified and directed. 38 M & L in replacement for 100 mm dia GI pipe ‘light grade’ with all fittings for protection of cable laid on road crossing, drain crossing, laid in floor or fixed to iron structures /poles complete all as specified and directed. 39 M&L in replacement for Earthing complete with copper plate 60×60cm ×3.15mm thick electrode thick, buried directly in ground (earth pit not less than 2.25 metres deep below ground level) with top edge of the plate not lessthan 1.5 metres below normal ground level, connected to 20×3mm copper strip as earthing leaddia by means of bolts, nuts, check nuts and washers of galvanised iron or steel all as shown in electrical plate No. 3 connected to earthing test point all as specified or indicated including testing on completion all as per ssr part-I specifed and directed by engineer in charge 40 M&L in replacement for Earthing complete with galvanized steel earth plate electrode 600x600x6mm thick buried directly in ground vertically to a depth not less than 2.25mtr deep below ground level with top edge of the earth plate not less than 1.5mtr deep below normal ground level, connected with & including galvanized iron strip 32 x 6 mm earthing lead connected to main test point as directed as earthing lead by means of nuts, bolts and washers of galvanized iron protected by 40 mm dia (light grade) GI tubing, funnel, wire mesh, 20mm bore GI tubing (light grade) watering pipe , including concrete pit in PCC (1:3:6) type C-1, precast RCC (1:2:4) type B-1 cover slab of size 54 x 54 x 5 cm reinforced with 8mm dia TMT bars @ 15cm c/c in both ways and 10mm dia MS handle (01 No) of suitable size for lifting of cover slab, charcoal and salt in alternate layers including necessary excavation and earth work in soft/loose soil all as shown in Electric plate No. 3 of SSR part-I and testing on completion including taking out the old unserviceable earthing materials complete all as specified and as directed. 41 M&L in replacement for Earth continuity conductor or main earthing lead fixed to wall on batten or recess or chases or buried in ground or drawn in conduit/pipe or fixed to poles or any other indicated situation for loop earthing etc. as required20x3mm copper strip. 42 Supply and fix in replacement of galvanised iron strip of size 25 x4 mmas earth continuity conductor or main earth lead fixed to wall on batten or recess or chases/roof of bldg or buried in groud or drawn in conduit/pipe or fixed to pole or any other indicated situation for loop earthing etc above ground all as specified. 43 Supply and fix in replacement of galvanised iron strip of size 32 x6 mmas earth continuity conductor or main earth lead fixed to wall on batten or recess or chases/roof of bldg or buried in groud or drawn in conduit/pipe or fixed to pole or any other indicated situation for loop earthing etc above ground all as specified. 44 Supply and fix in replacement of aluminiumstrip of size 25 x4 mmas earth continuity conductor or main earth lead fixed to wall on batten or recess or chases/roof of bldg or buried in groud or drawn in conduit/pipe or fixed to pole or any other indicated situation for loop earthing etc above ground all as specified. 45 M&L for preparation of old painted steel or iron surfaces of transformer of 100 KVA to 315 KVA capacity by scrapping with steel wire brush/ emery paper etc and applying one coat of synthetic enamel paint smoke grey colourusing spray painting machine complete including writing of SM No. , MES No etc. all as directed with black synthetic enamel paint on white backgroundcomplete all as specified and directed.( Necessary shut down of power supply be obtained from Engr- in -Charge before the work and supply shall be restored immediately on completion of work. 46 M&L for preparation of old painted steel or iron surfaces of transformer of 25 KVA to 75 KVA capacity by scrapping with steel wire brush/ emery paper etc and applying one coat of synthetic enamel paint smoke grey colourusing spray painting machine complete including writing of SM No. , MES No etc. all as directed with black synthetic enamel paint on white backgroundcomplete all as specified and directed.( Necessary shut down of power supply be obtained from Engr- in -Charge before the work and supply shall be restored immediately on completion of work. 47 M & L of 4 pole/2 pole structure of 11 KV Gang operated devices Servicing, greezing,tightning of connections of conductors/HT cables,nut bolt etc,insluators(pin/disc) checking and cleaning the surfaces with CRC,aligniment of tripole gang with existing pins,jumpering,replacement of GI pipe for gang operations handle(medium garde,appx lenght 06 mtr) including clamps etc complete all as specified and directed. 48 Supply and fixing in replacement forLT bush insulator as per existing size , shape and make for 100 to 300 KVA capacity transformer. 49 Supply and fixing in replacement for LT bush insulator as per existing size , shape and make for 25 to75 KVA capacity transformer. 50 Supply and fixing in replacement for LTbrass/copper stud as per existing size , shape and make for 100 to 300 KVAcapacity transformer. 51 Supply and fixing in replacement for LTbrass/copper stud as per existing size , shape and make for 25 to 75 KVAcapacity transformer. 52 Supply and fixing in replacement for gasket ( Set of four) for LT bushing as per existing size and shape for 100 to 300KVA capacity transformer. 53 Supply and fixing in replacement for gasket ( Set of four) for LT bushing as per existing size and shape for 25 to 75KVA capacity transformer. 54 Supply and fixing in replacement for top cover cork gasket setas per existing size and shape for 100 to 300 KVA capacity transformer. 55 Supply and fixing in replacement for top cover cork gasket setas per existing size and shape for 25 to 75 KVA capacity transformer. 56 Supply and fixing in replacement for HV bushing with brass terminal with nuts and washers and sheet gasketas per existing size and shape for 25 to 75 KVA capacity transformer. 57 Supply and fixing in replacement for HV bushing with brass terminal with nuts and washers and sheet gasketas per existing size and shape for 100 to 300 KVA capacity transformer. 58 Supply and fixing in replacement for breather assembly including silica gel of required quantity for 11/0.433 KV transformer for up to 300 KVA capacity . 59 Supply, filling and topping up new transformer oil conforming to IS-335 of 1993 for filling/ topping up oil of transformer up to desired level complete all as directed. ( Dielectric strength of oil shall not be less than 40KV ) Make: GULF/POWER OIL or equivalent as approved by GE. 60 Dehydration and filtration of existing transformer oil of transformer at different location in site with filtration machine and heating system to get Di-electric strength of oil 40KV/cm minimum without disturbing the power supply system complete all as specified and as directed. 61 M & L in replacement for rewinding of HV / LV limb of transformer / Stabilizer of any capacity by dismantling and removing the burnt out copper winding cleaning of limb thoroughly and rewinding the same with supper enameled proper size copper DPC wire having class F insulationas per existing sizeof the same gauge and turn with proper class of insulation impregnated & baking, assembling and testing completesuitable for HTcoil of 11/.433 KV transformer complete all as specified and directed Engineer-in-Charge (dry type/oil type) Note: Transpotation to & fro to local/company workshop is deemed to be above quoted rates. 62 M/L for cleaning of conservator oil tank of capacity 25 to 315 KVA transformers including refixing of rubber cork gasket as per existing size complete all as specified and directed. 63 Deployment of manpower and cable fault locator machine duly mounted on vehicle for detection of HT UG cable fault of any size & make by applying upto 15 KV supply to locate the faultand any necessary arrangements required contractor should be provided Note: Payment is only applicable if req of contractor is able to traceout the fault. 64 Overhauling of up to 100 KVA capacity transformer/Isolation TR, 11 KV / 433 V, by disconnecting LT / HT connections, cleaning complete for making it carbon free, checking for any loose bushings & making it rectified if found &reconnecting withLT / HT connections, testing and commissioning on load complete all as specified & directed by Engr-in-Charge for the following transformers. Note:-(i) Filtration of transformer oil if required will be measured & paid separately.(ii) Topping up with new transformer oil if required will be measured & paid separately(iii) Any spare Part & rewinding if found unserviceable will be measured & paid separately as supply & fix in repair. 65 All as per item No 64 above but160 to 315 KVA capacity transformer 11 KV / 433 V. 66 Cutting, trimming and prunning of trees/tree branches/creepers/climbers ofall around existing Sub Stn area up to fencing/boundry wall including cleaning the disturbed area beneath and removing the tree branches and debris from site and depositing 67 Supply and spreading 40 mm size graded stone aggregate on ground of sub station, average spreading levelling complete, all as specified and directed by Engg-in-Charge Note: Measurement shall be carried out for nit finished area of work executed. 68 Supply and fixing Polymer type disc insulator 11KV grey colour, GI end fitting high durability and reliable performance all as specified and directed by Engr-in-chrg.
