REPAIR/REPLACEMENT OF ELECTRIC POLES, CONDUCTORS, ETC AND OTHER EXTERNAL ELECTRIFICATION WORKS WITHIN THE MILITARY GARRISON AT KHUMBATHANG

Amount

Supply laying & testing in repair cable XLPE insulated screened PVC bedded, galvanized steel strip armoured, electric power cables (heavy duty) with stranded aluminium conductor, 11000 volts grade, earthed system of size 3 core 150 sq mm complete all as specified and directed by Engr-in-Charge.

Supply laying & testing in repair cable XLPE insulated screened PVC bedded, galvanized steel strip armoured, electric power cables (heavy duty) with stranded aluminium conductor, 11000 volts grade, earthed system of size 3 core 120 sq mm.

Excavation in trenches, not exceeding 1.5m wide and not exceeding 1.5m in depth; for laying of cable/pipe & getting out of hard/dense soil complete all as specified and directed by Engr-in-Charge.

Returning filling in including spreading, levelling, watering and well ramming in layers not exceeding 25cm thick in hard/dense soil complete all as specified and directed by Engr-in-Charge.

Removal of excavated soil to distance not exceeding 50m and depositing where directed at a level not exceeding 1.5m above the starting point complete all as specified and directed by Engr-in-Charge.

Sand cushioning with fine sand to under ground cables in trenches/ducts in layers of 8 cm deep before laying the cable and 15 cm deep after laying and stretching the cable as specified in clause 19.75 of SSR Part-I complete all as specified and directed by Engr-in-Charge. (Note:-Punned thickness shall be measured and paid)

Supplying and laying unreinforced precast concrete cable cover, class HV, type 1 flat of size 300mm x180mm x 40mm placed perpendicular of the cable complete all as specified and directed by Engr-in-Charge.

Supply and fix in repair GI Pipe Light grade with all connected accessories of sizes 100 mm dia completed as directed for cable protection complete all as specified and directed by Engr-in-Charge.

Cutting of existing road not exc 1.5 mtr in depth and not exceeding 0.45 mtr wide including black top sub base and WBM, well ramming in layers with watering after laying of GI pipe under road making good with PCC 1:2:4 type B-1 in all respect to match with the existing surface all as directed by Engr-in-charge.

S&F in repairs cable end joint 120 to 185 Sqmm 3 core XLPE 11KV HT Cable heat shrinkable indoor type complete all as specified and directed by Engr-in-Charge.

S&F in repairs cable end joint 120 to 185 Sqmm 3 core XLPE 11KV HT Cable heat shrinkable outdoor type complete all as specified and directed by Engr-in-Charge.

S&F in repairs cable straight through joint 120 to 185 Sqmm 3 core XLPE 11KV HT Cable heat shrinkable complete including necessary excavation and earth work complete all as specified and directed by Engr-in-Charge.

Re-laying of HT cable after rectification of the fault of size 120 to 185 sqmm complete all as specified and directed by Engr-in-Charge.

M&L for services for cable fault location for 11 KV, 3 core XLPE Cable 95 sqmm to 185 sqmm with the help of HT cable fault detector machine complete all as specified and directed by Engr-in-Charge.

Filtration of transformer oil to remove moisture, sludge, carbon particles and to achieve dielectric strength/rupturing capacity of oil and topping up of oil to the required level of the transformer indicator level complete all as specified and directed by Engr-in-Charge. (a) Oil topping up shall be measured and paid separately. (b) Filtration shall be done at site and on line. (c) BDV test shall be carried out before the filtration and after the filtration & results recorded in triplicate duly signed by the contractor, MES rep. and Engr-in-charge (d) Dielectric strength of the oil shall not be less than 50 KV after filtration & the rate quoted for the items shall be deemed to include the filtration till the desired dielectric strength is achieved.

Supply and fill new transformer oil topping up / change complete superior quality having di - electric strength not less than 60 KV and ISI marked of approved make complete all as specified and directed by Engr-in-Charge. Note:- Items rates deemed to include for (a) The transformer oil shall be ISI marked, and brought at site in sealed container only. (b) Collection of samples before and after topping up/changing including testing for dielectric strength.

Disconnecting the transformer any type situated at various locations 11/ 0.433 KV of any make and transporting to workshop for repairs/ rewinding. Dismantling the transformer and accessories, draining out insulating oil, taking out the core assembly, defective winding, cleaning the transformer complete internally and externally, providing new insulation, sleeves for outlet connections, opening the complete core assembly, reassembling, including dehydration and filtration of transformer oil to achieve desired dielectric strength, carrying out routine test, re-installation and commissioning. The repair work also includes the routine tests i.e. IR value, High voltage test, Ratio test, Short circuit test & BD value of oil of the transformer to be carried out at workshop of capacity 100 KVA - 350 KVA transformer complete all as specified and directed by Engr-in-Charge. Note:- (i) Copper winding wire/strip will be measured and paid separately. (ii) Transformer oil for topping up will be measured and paid separately. (iii) Transportation of transformer for repair and re-installation in original position is deemed to be included in quoted rates. (iv) The repair and replacement of parts of transformer should be in the presence of GE/AGE and it's the contractor responsibility to intimate the schedule time and workshop detail of transformer repair.

All as per srl item No. 17 here-in-before but capacity of transformer 500 KVA/ 750 KVA complete all as specified and directed by Engr-in-Charge.

M&L for taking out of burnt HT coil winding and replacement of the same with new copper wire coil of same gauge and turns including necessary insulation materials like impregnated paper or super enamelled of transformers of capacity 250/500 KVA complete all as specified and directed by Engr-in-Charge.

M&L for taking out of burnt LT coil winding and replacement of the same with copper strips of same gauge and turns including necessary insulation materials of transformers of capacity 250/500 KVA complete all as specified and directed by Engr-in-Charge.

Disconnecting the transformer any type from HT/ LT system and opening carefully for rectifying the leakage by replacing the unserviceable spare parts of capacity 100 to 500 KVA transformer and complete assembling after repairs including testing for any oil leakages, proper functioning and connecting the HT/ LT system complete all as specified and directed by Engr-in-Charge. Note :- Defective parts replaced will be measured and paid separately

Supply only LT bushings with brass studs complete all as specified and directed by Engr-in-Charge.

Supply only top cover gasket set complete all as specified and directed by Engr-in-Charge.

Supply only radiator flanged gasket 6 mm thick complete all as specified and directed by Engr-in-Charge.

Supply only oil level indicator gasket set complete all as specified and directed by Engr-in-Charge.

Supply only HT bushing with brass studs 11 KV complete all as specified and directed by Engr-in-Charge.

Supply and fix in replacement of breather assembly transparent plastic body with top and bottom portion pressed with metallic cover, filled with silica gel blue in colour and suitable for fixing on existing pipe of size 15/20/25 mm dia with suitable reducers/connectors etc as per site requirement /capacity of transformer complete all as specified and directed by Engr-in-Charge.

S&F in repair lightning arrestor non linear resister type (Surge) suitable for 11000 volt grade conforming to IS-3070 Part-I with discharge capacity 65 kilo Amps including stranded coloured sleeved jumper connection with PG clamps mounted on steel mounting fabrication of MS clamps, bolts, nuts, washers etc complete all as specified and directed by Engr-in-Charge.

M & L for replacement of earthing continuity conductor or main earthing lead fixed to wall on batten or recess or chases or buried in ground or drawn in conduit/piope or fixed to poles or any other indicated situation for loop earting etc as required 32x6 mm galvanised iron strip complete all as specified and directed by Engr-in-Charge.

M&L for Earthing complete with galvanised steel earth plate electrode of size (600 x 600 x 6.3) mm thick buried directly into ground vertically to depth not less than 2.25 metre below normal ground level with top edge of earth plate at a depth not less than 1.5 metre below normal ground level, surrounded on all sides by alternate layers of 150 mm thick charcoal and common salt, connected to galvanized earth strip of size 32mmX6mm by means of lugs, bolts, nuts, washer, check nuts of galvanised iron or steel all as shown in Electrical plate No. 3, strip protected by dia 40 mm bore light grade GI Pipe laid in floor and fixed to wall with proper size of clamps and watering pipe of bore 20 mm dia GI light grade including wire mesh funnel, PCC, earth chamber pit with PCC 1:2:4 type B-1 using 20 mm grade stone aggregate including form work cement mortar including CI Pit cover with frame necessary excavation and earth work in any type of soil including testing on completion for desired result complete including taking out of existing earthing complete all as specified and directed by Engr-in-Charge.

M&L for removing HT/LT over head conductor from the insulator where ever required and re-stretching the same without any kink/bend upto permissible sag, binding it on insulator by means of binding wire and testing the HT overhead line after completion complete all as specified and directed by Engr-in-Charge. (Note: Three/four runs of HT/LT overhead conductor for three phases and neutral shall be measured and paid as one length.)

Supply and erection in replacement truely vertical position steel tubular swaged poles, type 410 SP-31 (9.00 meters long) with cast iron base frame, finial taper plug, bolts, nuts and screws all as specified including factory painted with two coats of black bituminous paint internally through out and externally for embedded portion and making 30 cms wide strips with yellow and black paint at alternatively upto 1.50 metre height and applying two coats of aluminium paint over a coat of red oxide primer on remaining exposed surface after erection ,complete all as specified and directed by the Engr-in-Charge. Note:-Excavation & PCC work shall be measured and paid separately.

M&L for Cement concrete 1:2:4 type B-1 using 20 mm graded crushed stone aggregate in coping pedestal to poles including provision of necessary form work finishing the exposed surface even and smooth complete all as specified and directed by Engr-in-Charge.

M&L for Cement concrete 1:3:6 type C-2 using 40 mm graded crushed stone aggregate in foundation filling & mass concrete for poles/struts/stays assembly including provision of necessary form work finishing the exposed surface even and smooth in cement mortar 1:3 complete all as specified and directed by Engr-in-Charge.

M&L for Plain cement concrete 1:4:8 type D-2 (using 40 mm graded crushed stone aggregate) as in foundation filling and mass concrete including form work, complete all as specified and directed by the Engr-in-Charge.

S&F in repair Aluminium conductor, steel reinforced, of size 6/211 to 6/3010 mm (Squirrel to Ferret) straching properly on insulators and binding with aluminium binding wires, jumpers including fixing on insulators on each poles in span and tightening with permissible sag in between span etc complete all as specified and as directed by Engineer-in-charge. Note:-3% for sag shall be added in measurement

S&F in repair 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, bent to any shape or size as directed and inclusive of one primer coat of red oxide, one under coat of zinc oxide and one finishing coat of aluminium paint complete all as specified and directed by Engr-in-Charge.

S&F in repair pin type porcelain vitreous white, brown insulator 150 mm height and 150 mm dia for working pressure 11000 volts complete all as specified and directed by Engr-in-Charge.

M&L for disc type insulator, porcelain, vitreous 145 mm high and 255 mm dia ball and socket type,white.brown or green two in series assembly for tension clamps for conductors for working pressure 11000 volts grade, including taking out existing unserviceable insulator of any type/description etc complete all as specified and directed by Engr-in-Charge.

S&F in repair Stay assembly complete with GI stay rod 16 mm dia 1800 mm long, MS plate 230x230x6 mm, stay bow, loop insulator, PCC 1:3:6, connecting bracket of suitable MS flat and nut bolt washers etc complete all as specified in electrical plate No 1 of SSR Part-1 including taking out old stay assembly complete all as specified and directed by Engr-in-Charge. (Note;-excavation and PCC measured and paid separately)

Taking down defective unserviceable GOD from pole and supply and fix gang operated air break switches 12 insulators mounted on MS Channel with operating mechanism worked from ground level suitable for 11000 volts, 200 Amps including GI pipe handle clamps bolts, nuts, jumper wire connecting with stranded conductors complete with locking arrangements complete all as specified and directed by Engr-in-Charge.

S&F in repair danger notice plate made out of 1.6 mm thick mild steel sheet, vitreous enamelled white with letters, figures and conventional skul and bones in signal red colour and fixed with MS clamps,bolts and nuts of approved size,for HT,25x20 cm in size complete all as specified and directed by Engr-in-Charge.

Note:-The accepted amount will be arrived after deducting the Sch of credit i.e. Rs 85,035.00 and any other reduction if any from quoted amount.

M/s B R Constructions

SUMEET TRADING CORPORATION

EVERGREEN GROUP OF INDUSTRIES

RND ENGINEERS & CONTRACTORS

M/S Web Company

M/S ZTECH