REPAIR / MAINTANANCE OF HT / LT UNDERGROUND CABLE NETWORK AND CONNECTED ITEMS AT AF STN CARNICOBAR

Amount

Excavation in trenches not exc. 1.5 m wide and not exc 1.5 m deep in soft / loose soil for laying of cables or GI pipe and getting out including levelling of bottom suface to required level complete all as specified and directed

Returning filling in including spreading, levelling, watering and well ramming soil in layers not exceeding 25 cm thick all as specified and directed.

Removing excavated material (ie soil) from site to a distance n. exc 50 m away and depositing where directed at a level n. exc. 1.5 m above the starting point complete all as specified and directed

Re-Adjustment, Cleaning of Contact, greasing and testing of out door type Air break switch 11 KV, current rating upto 400 Amps for desired alignment to smooth operation from ground level and replacement of unserviceable parts in position. Note : Replacement of unserviceable parts shall be measured and paid separately under relevant items, complete all as specified and directed

Testing of earth resistance value monthly / quarterly / half yearly for any type of earth pits in any location with qualified electrician with helper including earh resistance testing equipment and record the value of earth resistance as per format given by Engr-in-charge and submit the test report complete all as specified and as directed. Note:- (i) the earth testing equipment shall be provided by the contractor at his own expense and charges for it shall be icluded in the quoted rate. (ii) The stationary required for record the values is deemed to include the quoted rate. (iii) The watering arrangement for curing in earth pits for enhancing the value to be included in the quoted rate

Supplying, laying, testing and connecting in replacement XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured, electric power cable (heavy duty) with multistranded aluminum conductors, 11 KV grade, IS 7098 marked, suitable for HT 11 KV(E) system, laid in trenches / ducts / encased in GI pipe / fixed to pole, including jointing & testing complete all as specified and directed of size 95 sqmm 3 core.

All as per item No 6.00 above but of size 120 sqmm 3 core.

M/L for Demolition of path /concrete in ground floors and pavings n exc 15 cm thickness (below or above ground level) complete all as specified and as directed.

M/L for cement concrete type B-2, 1:2:4 (40mm graded aggregate) 150mm thick complete all as specified and as directed.

Material and labour for cement concrete in foundations for pole coping or any other work type B2 1:2:4 with 40mm graded aggregate complete all as specified and as directed.

Supply and fix in replacement air break switch gang operated triple pole mechanically operated mechanism, mounted on 15 Nos insulator and steel frame with operating rod of 25 mm bore GI Pipe and locking arrangements worked from ground level for current rating 200 Amps, HT 11 KV grade including drop out fuses and necessary silver copper coating jumpers and making all electrical connections complete.

Supply and fixing lightning arrestor zinc oxide distribution class 65 KA RMS suitable for 11 KV system pole mounting type conforming to IS-3070 Part -III, 1993. including bolts, nuts and washers and electric connection complete all as specided and directed by Engr in charge.

S&F in replacement 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 one primer coat, one under coat and one finishing coat of aluminium paint on 2/4/6 pole 11 KV HT structure

Material and labour for spreading of stone aggregate of nominal size not more than 63 / 40mm under 2 / 4 / 6 pole HT structure / surrounding area manually without damaging any equipments, cable or parts , spreading & levelling of finished gravel uniformly in layers and rammed to true surface all as specified and directed.

S&F in replacement disc type insulator, porecelain, viterous 145mm high and 255mm dia ball and socket type , brown tow in series assembly for tension with tension clamps for conductors, working presseue 11000 volts complete all as specified and directed.

S&F in replacement pin type, porcelain, vitreous, white, brown or green insulator including one galvanised mild steel spindle, two galvanised iron washers,nut size 150 mm height 150mm dia, 11000 volts grade complete all as specified and directed.

Supply and fix Danger notice plate of 1.6mm thick mild steel sheet vitreous enamelled white, with letters, fingures and conventional skull and bones in signal red colour and fixed with MS clamps bolts and nuts of approximate size for LT 20x15 cm size complete all as specified and as directed

All as per item no. 17.00 above but for HT 25x20 cm size

Supply and fix mild steel / GI plates plain or chequered 5 mm thick or over in thick ness in required size for duct covers complete all as specified and as directed

Earthing complete with galvanized steel earth plate electrode of size 60cmx60cmx6 mm thick, buried directly in ground (earth pit not less than 2.25 m below normal ground level) with top edge of earth plate not less than 1.5m below normal ground level, connected to GI strip of size 32 x 6mm by means of bolts, nuts, check nuts and washers of galvanised iron or steel as shown in electrical plate No 3 of SSR Part I, connected to earth test point and the equipment on the other nuts and washers of galvanised ironside complete all as specified, including testing and commissioning complete all as directed. Note : (a) The unit rates quoted against this item shall be deemed to include the cost of excavation and earth work in any type of soil, common salt & charcoal dust in alternate layers, PCC 1:3:6 as in pit, precast RCC 1:2:4 type B-1 with necessary reinforcement as in cover & frame for pit, funnel, watering pipe 20 mm bore GI pipe light grade, protection pipe 40 mm bore GI pipe medium grade etc. (b) The quoted rates shall also deemed to include the cost of earth test point and earth strip and protection pipe upto 7.5 meter beyond the earth plates electrode.

M & L for Stranded Aluminium Conductor cable Servic wire in replacement PVC sheathed 1100 Volts, flat twin core of size 16 sqmm

Supply and fix Cable jointing kit for 11 KV (Earthed) 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 50 Sqmm to 95 Sqmm.

All as per item No 22.00 above but of size 120 Sqmm to 185 Sqmm, 3 core.

Supply and fix Cable jointing kit for 11 KV (Earthed) 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 50 Sqmm to 95 Sqmm.

All as per item No 24.00 above but of size 120 Sqmm to 185 Sqmm, 3 core.

Supply and fix 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 50 Sqmm to 95 Sqmm.

All as per item No 26.00 above but of size 120 Sqmm to 185 Sqmm, 3 core.

Supply, laying, jointing and commissioning in replacment LT underground cables XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured, electric power cables (heavy duty) with multistranded aluminium conductors, 1100 volts grade cross sectional area 300 Sqmm 3.5 core including taking down unserviceable cable, laid in trenches complete all as specified and directed. Note: Excavation, earth work ,cable protection , sand fillings shall be measured and paid separately.

All as per srl item No 28.00 here-in-before but of size 120 Sqmm 3.5 core

All as per srl item No 28.00 here-in-before but of size 95 Sqmm 3.5 core

All as per srl item No 28.00 here-in-before but of size 70 Sqmm 3.5 core

All as per srl item No 28.00 here-in-before but of size 50 Sqmm 3.5 core.

All as per srl item No 28.00 here-in-before but of size 35 Sqmm 3.5 core.

All as per srl item No 28.00 here-in-before but of size 16 Sqmm 4 core.

All as per srl item No 28.00 here-in-before but of size 10 Sqmm 4 core.

Supply and laying double wall corrugated pipe (DWC) conforming to IS 19430 Part - I of size 50mm outer dia and 38 mm inner dia complete all as specified and as directed

All as per srl item No 36.00 but 63 mm outer dia and 50 mm inner dia.

All as per srl item No 36.00 but 110 mm outer dia and 95 mm inner dia.

All as per srl item No 36.00 but 120 mm outer dia and 103.5 mm inner dia.

Supply, laying, jointing and commissioning in replacment LT underground cables XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured, electric power cables (heavy duty) with multistranded aluminium conductors, 1100 volts grade cross sectional area 630 Sqmm single core including taking down unserviceable cable, laid in trenches complete all as specified and directed. Note Excavation, earth work ,cable protection , sand fillings shall be measured and paid separately.

All as per srl item No 42 here-in-before but of size 400 Sqmm single core

Material & Labour for replacement of jumper / bus bar made of ACSR conductor of existing size on HT two / four / six pole structure including bus bar with PVC sleeve , lugs , nut bolts and washers complete all as directed.

M & L for cutting and removing grass, vegetation bushes etc from surrounding 2 pole /4 pole HT structure , outside area of HT installation and removing all rubbish to a distance not exceeding 50 m as directed.

Suplying and laying as replacement in sub station fixing 11 KV electrical insulation mat of size 1 mtr x 2 mtr x 19 mm thick specification as per IS 15652 2006

Supplying and fixing in replacement male contact / moving contact for gang operated air break device 11 KV complete all as directed at site by Engr-in-charge.

Supplying and fixing in replacement female contact /fix contact jaw for gang operated air break device 11 KV complete all as directed at site by Engr-in-charge.

Supplying and fixing in replacement tinned copper flexible jumper 200 Amp / 400 Amp for gang operated air break device 11 KV complete all as directed at site by Engr-in-charge.

Supplying and fixing in replacement MS jumper carrier for gang operated air break device 11 KV complete all as directed at site by Engr-in-charge.

Supplying and fixing in replacement back connector plate for gang operated air break device 11 KV complete all as directed at site by Engr-in-charge.

Supplying and fixing in replacement porcelain post insulator for gang operated air break device 11 KV complete all as directed at site by Engr-in-charge.

Supplying and fixing in replacement drop out fuse element 5 to 25 Amp complete all as directed at site by Engr-in-charge.

Supplying and fixing in replacement drop out fuse element 50 Amp complete all as directed at site by Engr-in-charge.

Cable route indicator comprising of CI wiser of size 100mm dia embossed as HT / LT power cable fixed to MS angle iron of size 50x50x6mm graded stone aggregate of block size 300x300x450mm including two coats of aluminium paint over a coat of aluminium red oxide primer and neceessay earth work complete all as specified and directed.

M&L for copper sulphate for enhance the conductivity of soil including pouring water as required in any loaction and necessary excavation and earth work if necessary be included in quoted rate complete all as specified and as directed.

M&L for comman salt for enhance the conductivity of soil complete all as specified and as directed. Note for Srl item no. 54.00 & 55.00: The contractor shall submit purchase vouchers before claiming payment through RAR / FB.

Supply, fixing and testing straight through joint heat shrinkable type with jointing kit suitable for cable PVC / XLPE insulated armoured heavy duty aluminium conductor 1100 Volts grade complete all as directed for the following sizes :- 10 to 16 Sqmm x 3.5 core/ 4 core

All as per item No 56 but size 25 to 50 Sqmm x 3.5 core/ 4 core

All as per item No 56 but size 70 to 150 Sqmm x 3.5 core

All as per item No 56 but size 185 to 240 Sqmm x 3.5 core

M & L for 2 coat of aluminium painting over a coat of red oxide to steel surfaces of HT 2 pole sturcture (Angle Iron / MS channel /MS clamp etc) including preparation of old surface complete all as specified.

All as per Serial item No 60.00 here-in-before but 4 pole structure

Arranging fault locating machine to locate the fault in underground electric power cables of any length and any type of 11000 Volts grade HT cable disconnecting faulty 11 KV HT cables from both ends, removal of Fault to pin point the fault and testing of the cable after locating fault and cutting the cable at fault to check healthness of cable before and after fixing the joint including excavation and earth work in any type of soil complete. Note : (a) Cable joints and cable shall be measured and paid separately under respective item of Sch 'A'. (b) 11 KV HT cable & joints shall be measured and paid for seperately under respective items of schedule. (c) Retrieved old serviceable cable cover / bricks will be laid in trenches for cable protection. If extra PCC cover / bricks and sand required at site shall be measured and paid separately under respective items of BOQs. (c) The breakdown shall be rectified and electricity restored within 06 hours of contractor's coming to the site of breakdown. In case the breakdown is not rectified within this period, a penalty of Rs 1,000/- per hour per breakdown shall be imposed.

All as per item Ser No 62.00 above but 1100 Volt LT cables

Taking out faulty underground HT / LT cable of any sizes by excavation and removing DWC pipe / bricks of any size and relaying in the same trenches or re-routing after rectification of fault or replacing faulty portion of cable with new cable and removing of surplus soil complete all as directed by Engineer in Charge . Note: (a) HT / LT cable & joints shall be measured and paid for seperately . (b) Retrieved old serviceable bricks/DWC pipe will be laid in trenches for cable protection. (c) The rates quoted is deemed to be included the cost of Excavation, Returning filling and, earth work labour charges etc.

Tropical Refrigeration

SKY GROUP

MGP Enterprises

Chandra Construction Enterprises

M/s Karbhagam Sales Agency

Ravi Enterprises