Irrigation and Waterways Department - West Bengal

34770525 procurement of electrical materials for running maintenance of electrical installations water supply system at teesta administrative building teesta prakalpa bhawan teesta colony at tinbatti 1 routine maintenance of 850 2200 va ( make: microtek / luminious / v guard / amaron etc. ) inverters and batteries includingcleaning, periodic checking and attending day to day complaints and supply & pouring of distilled water, replacement of defective parts like fuse, battery thimble, wire and other parts as requireds 2 comprehensive annual maintenance and servicing of air conditioning machine : 3 1.5 ton split type ( teesta prakalapa bhawan =10 nos., teesta administrative building = 6 nos., total = 16 nos. ) 4 supplying and fixing 240 / 415 v mcb of breakingcapacity 10ka & c characteristics on din rail ofexisting dbs and necessary connection.6 32a, dp, make legrand 5 supplying of following xlpe insulated aluminum conductor armored cables of 1.1kv grade as per is 7098 ( part 1 ) 1988 with up to dateamendments. ( rate in rs. per mtr ) 3.5core 35sq. mm. 6 supplying of following xlpe insulated aluminum conductor armored cables of 1.1kv grade as per is 7098 ( part 1 ) 1988 with up to dateamendments. ( rate in rs. per mtr ) 2core 10sq. mm. 7 laying of one no. cable upto 35 sqmm in underground trench 460 mm wide x 760 mm average depth, with brick protection on thetop of the cable with 8 ( eight ) nos. bricks per metre, including filling the space between the brick & cable and also the trench with shifted soil, leveling up and restoring surface duly rammed. 8 laying of cable as below, after cutting floor / pavement / wall / and making holes incl., embedding the cable at an average depth as below and mending good the damages to original finish incl. removing the rubbish 9 from 2.5 sqmm to 35 sqmm at an average depth of 75 mm in floor / pavement / wall etc 10 supplying and fixing compression type gland complete with brass gland, brass ring & rubber ring for dust & moisture proof entry of xlpe / pvc armoured cables as below : 11 for 2 core upto 10 sq.mm 12 for 4 core upto 35 sq.mm 13 distribution wiring in 1.1 kv single core stranded frpvc insulated & unsheathed copper wire ( brand approved by eic ) in 20mm size pvc rigid conduit fr ( precision make ) incl. necy. fittings as required 14 2 x 84 / 0.3 ( 6 sqmm ) + 1 x 56 / 0.3 ( 4 sqmm ) ecc 15 supplying & fixing sheet metal ( 16 swg ) iron clad busbar chambers on angle iron frame on wall, incl. earthing attachment and painting as required – ( as per drawing no. 470 of pwd specification book – may 1991 ) , 4 bars, 415 v, 125 a, dimension of al. bars [ 85mm long ] 4 x 25x5mm, dimension of sheet metal box 500x150mm. 16 supplying and fixing sheet steel main switches on flat iron frame on wall 17 415v tpn with fuse on l&n, 60 / 63 a, make : standard / hpl 18 16a kit kat rewireable fuse. 19 supplying swaged and welded steel tubular pole of followingspecifications as per is 2317: 1980 ) 9m length, 164kg, 410 sp 33 20 erection of single steel tubular pole of length as given below with / without sole plate & cap etc. in cc foundation ( proportion and dimension indicated below ) , having 600x600x1, 50 mm thick cc ( 4:2:1 ) base block below sole plate / pole with hard jhama metal including cc ( 6:3:1 ) muffing 0.30 mts. dia and 0.30 mts. above ground level including 3 mm thick neat cemented finish and gl earth bolt after making drilled holes etc. on pole & carriage of pole upto 1.6 km from store to work site including filling up the excavated earth pit with shifted soil and ramming properly, upto 9.0 mtr. size 0.6x0.6x1.70 mts 21 supplying and erection of galv. stay set complete with 7 / 12 swg gi ( hot dip ) stranded stay wire ( 45 ton quality ) , 1.8 mtr.x 16 mm dia galv. stay rod 100 mmx100 mm x6 mm thick galv. ms anchor plate, 356 mmx13 mm dia galv. bow ( with ratchet type nut ) , thimble, galv. box type stay clamp in cc foundation ( 6:3:1 ) having hard jhama metal incl. providing earth connection 22 supplying & erection of galv. ‘d’ iron complete with suitable pole clamp 75mm x 88mm porcelain shackle insulator & 15 mm dia galv. bolts & nuts. incl. painting 23 supplying & erection of 75x88 mm porcelain shackle insulator complete with 190x30x5 mm galv. ( hot dip ) strips with 15.88 mm dia galv. bolts, nuts, etc. for conductor upto 7 / 3.10 mm, 32 sqmm of aac / equivalent size of acsr 24 extra on items 1& 2 above, for providing cc ( 6:3:1 ) base block ( around the pole ) dimension 0.45x0.45x0.60 mt. above ground level, neatly cemented finish ( 3 mm thick ) , at the base pole ( in lieu of cc muffing ) incl. drilled hole in pole suitable for alkathene / polythene pipe entry, for street light wiring, without loop box 25 re straining upto 6 / 1 / .166 acsr conductor including s & f binding wire with 9 swg soft al. wire [ 35 mtrs x 3 span x 5 nos. = 525 mtrs ] 26 dismantling steel tubular / rail / strut embedded in cc foundationincl. excavation, filling of holes, restoring surface, loading at siteand delivering, unloading, sorting, stacking properly at any placeas per direction upto a lead of 1.6 km. 27 dismantling of oh line comprising of copper / aac / acsr conductor, cross arms / ‘d’ iron clamps / brackets / ‘v’ bracketsetc. insulators, earthwire, cradle guard, safety devices, staywire etc., incl. sorting out, rolling the conductors, stacking, loading at site and delivering, unloading , measuring the conductors, sorting, stacking properly at any place as per direction upto a lead of 1.6 km : oh line comprising of 3 phase, neutral, street light phase & earth wire [ pwd / sor / elect / i 2 / 15.b ] 28 re straining 8 swg to 6 swg gi continuous earth wire without earth clamp ( 35 mtr x 3 span=105mtr ) 29 painting of steel tubular pole of lengths and no. of coats of paint, as given below with ready mixed paint / primer of approved make, and brand incl. preparation of surface by sand paper / emery paper, cleaning etc. for receiving fresh coat of paint. a ) upto 9 mtr long pole 30 one coat of red lead / zinc chromate priming 31 1st coat of synthetic enamel paint over the primer 32 2nd coat of synthetic enamel paint over the 1st coat 33 supply & delivery of 3 ph 415v 50hz 4 pole 50ka with adjustable overload setting & thermal magnetic release mccb, 400a, make : l&t / havells / abb 34 fixing only tpn switch fuse units in sheetsteel enclosure with hrc fuses on angle ironframe on wall for 32a to 400a 35 supplying of approved make high speed ceiling fan ( isi marked ) of following sizes having double ball bearing complete with standard down rod, canopy, hanging shackle, aluminium blades, without regulator, a.c. 230 250 volts. make crompton / bajaj / havels, / usha or equivalent ( approved by eic ) 1200mm 36 supply & delivery of step type electronics fan regulator. 37 supplying of different types of led lamps ( 12w ) make : philips, 12.0 watt, base b22 / e27, 1200 lm 38 supply and fixing of smart bright essential street light ( 70 watt ) complete withall accessories to be fixed / projected from the wall of the building or on pole incl.making holes / providing clamping arrangement & necy. gi reducer as required.s&f 40 mm gi pipe ( isi medium ) quality 1.5 mts. average length havingsuitable bend s&f necy. length of 1.5 sqmm pvc insulated single corestranded annealed copper wire and making connections as required andmending good damages to wall incl. painting etc.make : crompton, 72 watt 39 supply and fixing of smart bright street light ( 36 watt ) complete with allaccessories to be fixed / projected from the wall of the building or on pole incl.making holes / providing clamping arrangement & necy. gi reducer as required.s&f 40 mm gi pipe ( isi medium ) quality 1.5 mts. average length havingsuitable bend s&f necy. length of 1.5 sqmm pvc insulated single core strandedannealed copper wire and making connections as required and mending gooddamages to wall incl. painting etc.make : crompton, 36 watt 40 supply and fixing of led bollard ( 10watt ) complete with all accessories.make : crompton, 10 watt 41 supply philips led tube model no mas led tube 1200mm 18w865 t8i 2100lm 42 housing for double polycarbonate diffuser. ( make havells, model regal batten for led tube, code regalbattent 8upto2x22wssbswh / philips ) 43 supply & delivery of housing for single polycarbonate diffuser, ( make: havells, model : regal batten for led tube, code: regalbatten t8upto1x22wssbswh / philips ) 44 supply & delivery of suface mounted 21 watt led down lighter with white powder coated aluminium housing with intregrated electronic drives. make havells, model enduraneohesurfacedl21wled857s 45 supplying & delivery of electronic copper ballast ( chock ) for fluorescent tubelight ( volatge : 230v, frq : 50hz, pf : >0.9 ) , make : crompton / philips 46 supply & delivery of 24 / 0.20mm twin twisted tinned copper flexible wire 47 supply & delivery of 6a modular type switch. 48 supply & delivery of 16a modular type switch. 49 supply & delivery of 6a modular type 5 pin plug socket. 50 supply & delivery of 16a modular type 6 pin plug socket. 51 supply & delivery of modular soket type 2 module regulator. 52 supply & delivery of 5 a, piano key type switch. 53 supply & delivery of 15a piano key type switch. 54 supply & delivery of 5 a, 3 pin piano flush type socket. 55 supply & delivery of 15a flushed type 3 pin plug socket. 56 supply & delivery of angular batten holder ( anchor ) . 57 supply & delivery of mcb enclosure 2 way. 58 supply & delivery of mcb enclosure 4 way. 59 supply & fixing 240 v, 25 a, modular type starter ( brand approved by eic ) with 25a modular switch type dp mcb ( c curve ) and 4 module gi modular type switch board with 4 module top cover plate flushed in wall incl. s&f switch board and cover plate and making necy. connections with pvc cu wire and earth continuity wire etc. 60 supplying of following xlpe insulated aluminum conductor unarmored cables of 1.1kv grade as per is 7098 ( part 1 ) 1988 with up to dateamendments. ( rate in rs. per mtr ) 2core 6sq.mm. 61 supplying of following xlpe insulated aluminum conductor armored cables of 1.1kv grade as per is 7098 ( part 1 ) 1988 with up to dateamendments. ( rate in rs. per mtr ) 2core 16 sq.mm 62 supplying and fixing 240 / 415 v mcb isolator ondin rail of existing dbs and necessary connection.40a, dp, make lgrand. 63 supplying and fixing 240 / 415 v mcb isolator ondin rail of existing dbs and necessary connection.63a, dp, make lgrand. 64 supplying and fixing 240 / 415 v mcb of breakingcapacity 10ka & c characteristics on din rail ofexisting dbs and necessary connection.6 32a, sp, make legrand 65 supplying & fixing medium gauge gi pipe ( isi medium ) protection with necessary fittings and jointing metarials as required: 40 mm dia. [ pwd / sor / elec. / k 3 / 124 ] 66 supply & delivery of pvc insulation tape, 19mmmake : steelgrip 67 supply & delivery of fully automatic star delta starter for submersible pump, 15hp / 11kw, ac 3 duty, 415v, 50 hz, 3 phase, relay range: 13 22 a, type mug15, cat no.cs94091, make : l&t 68 supply & delivery of 3 ph 415v 50hz direct on line starter, size : 3.7kw / 6hp, relay range : 6 10a, coil voltage: 400 / 440v, make : l&t, type : mk1, cat ref : ss96210povo...

Damodar Valley Corporation - West Bengal

33342335 rehabilitation of location no 393 of dc line dtps jamuria ( l 99 nd 100 ) to an adjacent location including foundation, erection of tower and dismantling and re stringing of conductor ( one circuit at a time ) , earthwire or opgw, accessories etc...

Damodar Valley Corporation - West Bengal

28706818 procurement of emergency restoration system ( ers ) for maintain power supply through transmission line under exigency situation procurement of emergency restoration system ( ers ) for maintain power supply through transmission line under exigency situation , complete ers system including articulated base ( gimbal ) , mast sections, box sections, guy plates / swivels, bolts & nuts, lock washers, foundation / base plate, guy & guy hardwares, anchor assemblies for normal soil, weak soil, marshy soil, rocky soil along with anchor installer kit, all types of composite insulator strings of long rod, line post, for suspension and tension towers, pilot insulators, along with all hardware fittings, guy strain insulators with hardware fittings, conductor and earthwire / opgw hardware and fittings like suspension and tension clamps, vibration dampers etc. with all necessary erection and stringing equipments, tools and tackles, adequate numbers of storage containers etc. all complete as per requirement and above specifications. each set shall comprise of the following type of ers tower structures: , a ) ers suspension / running angle towers ( 0° 20° ) 2 nos. , b ) ers tension / dead end towers ( upto 60° ) 4 nos. , c ) ers tension / dead end towers ( upto 90° ) 1 no. , software , i ) plscadd standard software ( including tower spotting ) complete with technical support & update for 5 years. , ii ) pls tower software complete with technical support & update for 5 years. , iii ) pls mast / pole software complete with technical support & update for 5 years. , iv ) software for ers...

Kolkata Municipal Corporation - West Bengal

23225904 improvement of bustee lighting arrangement at beerpara , hatath colony , rosogolla colony and other bustee in ward no 03 , maintenance and management of indoor / outdoor elcetrical installations removing of luminaries with lamp from the pole / column and keeping them ready for dispatch as per direction of eic: h . p . m . v . / h . p . s . v . luminaries / mh / led street light fittings , schedule of rates for overhead line installation repair 15 . dismantling of oh line comprising of copper / aac / acsr conductor , cross arms / `d . . . iron clamps / brackets / `v . . . brackets etc . insulators , earthwire , cradle guard , safety devices , staywire etc . , incl . sorting out , rolling the conductors , stacking , loading at site and delivering , unloading , measuring the conductors , sorting , stacking properly at any place as per direction upto a lead of 1 . 6 km ( b ) oh line comprising of 3 phase , neutral , street light phase & earth wire , schedule of rates for overhead line installation repair 14 . dismantling steel tubular / rail / strut embedded in cc foundation incl . excavation , filling of holes , restoring surface , loading at site and delivering , unloading , sorting , stacking properly at any place as per direction upto a lead of 1 . 6 km , outdoor lighting installation , steel tubular pole , m . s . pipe , g . i . pipe , pole cap etc supplying of swaged steel tubular pole as per is 2713 , pt . ii , 1980 for following designation and of following dimensions . ( outside dia & thickness are given in annexture 1 ) 410 sp 24 ; 8 . 5 mtr . , 158 . 00 kg . , outdoor lighting installation , steel tubular pole , m . s . pipe , g . i . pipe , pole cap etc . supply of 80 mm dia m . s . pipe [ thickness 3 . 20mm ] conforming is 1239 ( part 1 ) 2004 ] 3 . 25 m long ( approx ) in c . c . foundation 0 . 46 m x 0 . 4 m x 0 . 9 m depth of 1:2:4 mixture with hard stone metal and supplying and fixing base plate including muffing of 300 mm x 300 mm painting with 2 coats of aluminum paint over a coat of red oxide and numbering and supply & fixing earth bolt , cable entry socket etc , outdoor lighting installation , steel tubular pole , m . s . pipe , g . i . pipe , pole cap etc . supply & fixing arm bracket of 50 mm bore tubular pipe ( m . s . ) of 1 . 5 m length for fixing on 75 mm / 100 mm dia pole top including supply & fixing 6 mm thick m . s . plate welded with bolts , nuts & clamps , etc . as required with fabrication work including painting the same with one coat of red oxide primer and two coats of aluminium paints . , outdoor lighting installation , steel tubular pole , m . s . pipe , g . i . pipe , pole cap etc . supply & fixing single arm projected lamp bracket ( single pipe bending ) of 50 mm dia g . i . pipe ( tata medium ) 3 . 65 mm thick of 2 . 1 mtr ( 150 mm approx ) long having 105 degree curvature with reducing socket to be fitted at the top of the pole with bolts , nuts , clamps etc . as required and painting the set with aluminium paint . , schedule of rates for oh line installation ( lt distribution ) . erection of poles . erection of single steel tubular pole of length as given below with / without sole plate & cap etc . in cc foundation ( proportion and dimension indicated below ) , having 600x600x150 mm thick cc ( 4:2:1 ) base block below sole plate / pole with hard jhama metal including cc ( 6:3:1 ) muffing 0 . 30 mts . dia and 0 . 30 mts . above ground level including 3 mm thick neat cemented finish and gi earth bolt after making drilled holes etc . on pole & carriage of pole upto 1 . 6 km from store to work ( site including filling up the excavated earth pit with shifted soil and ramming properlyupto 9 . 0 mtr . size 0 . 6x0 . 6x1 . 70 mts , schedule of rates for earthing installations . earthing installation . . . with pipe electrode . earthing with 50 mm dia gi pipe 3 . 64 mm thick x 3 . 04 mts . long and 1 x 4 swg gi ( hot dip ) wire ( 4 mts . long ) , 13 mm dia x 80 mm long gi bolts , double nuts , double washers incl . s & f 15 mm dia gi pipe protection ( 1 mts . long ) to be filled with bitumen partly under the ground level and partly above ground level driven to an average depth of 3 . 65 mts . below the ground level as below: ( a ) by isi medium gi pipe . , schedule of rates for overhead line installation repair 11 . providing cc ( 6:3:1 ) muffing 0 . 3 mtr dia upto the height of 0 . 3 mtr . above the ground level around the pole base complete with 3 mm thick neatly finished cement plaster all round after dismantling the unserviceable muffing if necessary , erection of galv . ( hot dip ) cross arms / `d . . . iron clamp7 ) . supplying & erection of galv . `d . . . iron complete with suitable pole clamp 75mmx88mm porcelain shackle insulator & 15 mm dia galv . bolts & nuts . incl . painting , schedule of rates for overhead line installation repair 5 . replacing galv . ( hot dip ) ms earth clamp 380x25x3 mm size complete with bolts and nuts etc . as required on pole ( as per specification ) for fastening earth wire incl . painting , outdoor lighting installation , steel tubular pole , m . s . pipe , g . i . pipe , pole cap etc . supply & fixing straining screws of ( 300 mm x 16 mm dia ) with 2 nos . 200 mm long angle iron / pole clamp to be fixed on wall / pole for catenary system of wiring . , laying on wall / surface with saddles / clamps . ( a ) laying of cable upto 2 core 25 sqmm on wall / surface incl . s & f ms saddles with earthing attachment in 10 swg gi ( hot dip ) wire , making holes etc . as necy . mending good damages and painting , laying through rcc / hume / gi pipe . ( a ) laying only cable upto 50 sqmm through existing rcc / hume / gi pipe / open masonary trench for single , 2 , 3 , 3 . . . & 4 core , laying through underground trech . ( a ) laying of one no . cable upto 35 sqmm in underground trench 460 mm wide x 760 mm average depth , with brick protection on the top of the cable with 8 ( eight ) nos . bricks per metre , including filling the space between the brick & cable and also the trench with shifted soil , leveling up and restoring surface duly rammed , 90 . supply of pvc insulated unarmoured sheath aluminium conductor cable ( 1 . 1kvgrade ) ( gloster / incab / mescab / polycab / havells / finolex ) . d ) 10sqmm x 4core , 90 . supply of pvc insulated unarmoured sheath aluminium conductor cable ( 1 . 1kvgrade ) ( gloster / incab / mescab / polycab / havells / finolex ) . c ) 10sqmm x 2core , 90 . supply of pvc insulated unarmoured sheath aluminium conductor cable ( 1 . 1kvgrade ) ( gloster / incab / mescab / polycab / havells / finolex ) . b ) 6sqmm x 2core , 90 . supply of pvc insulated unarmoured sheath aluminium conductor cable ( 1 . 1kvgrade ) ( gloster / incab / mescab / polycab / havells / finolex ) . a ) 4sqmm x 2core , supply and / or fixing item supplying of 1 . 1 kv . grade pvc insulated armored aluminum conductor of following cables ( make: polycab / gloster / havells / finolex ) : size in sq . mm 6 no & dia . of wire in mm 1 / 2 . 80 no of core 2 , outdoor lighting installation , steel tubular pole , m . s . pipe , g . i . pipe , pole cap etc . supply and drawing of 7 / 14 swg galvanised stranded wire for drawing unarmored cable ( supply of cable is not included in the scope ) by catenary system of wiring with 3nos . reel insulator per mtr . and binding with binding wires etc , as reqd . for drawing , outdoor lighting installation , steel tubular pole , m . s . pipe , g . i . pipe , pole cap etc . drawing of unarmored cable of suitable size ( supply of cable is not included in the scope ) on existing galvanized stranded wire for centenary system with reel insulators and binding wires . , outdoor lighting installation , steel tubular pole , m . s . pipe , g . i . pipe , pole cap e...

Aliah University - West Bengal

10344850 electrical works in the laboratories of computer sc. & engineering department at new town campus of aliah university. supply & installation of 16sq.mm 4 core copper pvc cable , supply & installation of 4sq.mm 4 core copper pvc cable , earthwire 4 sq.mm insolate solid sulfar proof single core , 2.5 sq.mm single core copper wire tpn db to plug board for computer wiring , 1.00 sq.mm single core copper wire for earthing , computer board 168 nos. for each board , 16 way spn db ( door type ) , 12 way spn db ( door type ) , 16 / 20 sp mcb , 63a isolator , 63a isolator , 25 pull cord switch ¾ & 50 pull cord switch 2” casin, fiexible pipe 1 ½” 4 bundle wooden goli size 5 pkt pvc tape30 pcs. 1” screw 5 pkt. etc , wire platform , floor laying conduit ( aluminium )...

West Bengal State Electrictiy Trasnmission Company Limited - West Bengal

6845628 pkg z for supply of materials, conductor, opgw earthwire, hardware materials and accessories, construction of tower foundations, erection of towers, stringing, testing and successful commissioning of 132 kv d/c and 220 kv d/c tr.line as per boq, ce(p)/wbsetcl/linepkgz/14 15/20 dt 10.12.14...

West Bengal State Electrictiy Trasnmission Company Limited - West Bengal

5762719 supply of materials, conductor, underground cable, earthwire(opgw), hardware materials and accessories, testing & construction of tower, tower foundations & pile foundations, erection, stringing, testing and successful commissioning of 132 kv d/c & m/c transmission lines as detailed below: line 1: 132 kv d/c line from nazirpur 132kv sub station to domkal 132 kv sub station and associated work with opgw including lay of xlpe cable of route length 30 km. approx. and 1.5 km. cable route respectively. line 2: 132 kv d/c line from gokarno 132kv sub station to bhadrapur 132 kv sub station and associated work with opgw of route length 34 km. approx...

West Bengal State Electrictiy Trasnmission Company Limited - West Bengal

4538695 construction of foundations, erection of towers and stringing, sagging of 2 phase conductor and earthwire and other allid job including commissioning for 132kv single circuit line on double circuit towers and fabrication, galvanizing, testing, supply and delivery 132kv transmission tower structures including g i nuts, bolts and washers of different sizes. ...

West Bengal State Electrictiy Trasnmission Company Limited - West Bengal

4193660 turnkey basis through domestic competitive bidding foi design & testing of double circuit towers with quadruple moose) and tower foundation, supply of tower materials, conductor, earthwire. opgw. hardware materials and accessories, erection, stringing, testing and successful commissioning of 400 kv dc. ...

West Bengal State Electrictiy Trasnmission Company Limited - West Bengal

4093365 supply of tower materials d/c & mic). zebra conductor aaac panther being wbsetcls supply), earthwire 24f opgw & gsw). insulator, hardware materials and accessories, dismantling of d/c line, design and construction of tower foundation, erection, stringing, testing and commissioning of 220 kv m/c & d / c and 132 kv d/c transmission lines. ...

West Bengal State Electrictiy Trasnmission Company Limited - West Bengal

3648815 supply of tower materials, conductor acsr zebra), earthwire gsw & 24f opgw), hardware materials and accessories, dismantling of s/c & d/c lines with accessories and design & construction of tower foundation, erection, stringing, testing and commissioning of 132 kv & 220 kv transmission lines. ...

West Bengal State Electrictiy Trasnmission Company Limited - West Bengal

3648152 supply of tower materials, conductor, earthwire, hardware materials and accessories, dismantling of s/c and d/c lines with accessories and design and construction of tower foundation, erection, stringing, testing and commissioning of 132kv and 220 kv transmission line from krishnanagar 220kv sub station to proposed gokarmo 220 kv sub station ...

State Electricity Transmission Co Ltd - West Bengal

1734335 design of multi circuit towers and its foundation, supply of tower materials (d/c & m/c), conductors, earthwire, hardwire materials and assessories, dismantling of s/c line, design and construction of tower with its foundation, erection, stringing, testing and commissioning on turnkey basis...