PROVISION OF BOREWELL FOR NEW MODEL CSD DEPOT AT PALLAVARAM AND REPLACEMENT OF BER TRANSFORMERS UNDER GE CHENNAI

Amount

REVISED BOQ UPLOADED ON 07 FEB 2024

SCH "A" PART-I (BOREWELL AND ALLIED WORKS)

Drilling bore hole vertically by using high speed reverse rotary fast rig machinery or any other approved method of size 250mm dia with PVC plain pipe of dia 250mm, heavy duty 6 kg / sqcm pressure rating, ISI marked in lengths of 3m to 6m, complete including jointing of casing pipe with adhesive material and galvanised screws to secure the pipes firmly in position conforming to IS specifications including all tools and plant and equipment required (Pipe shall be as approved by the GE) through any type of soil / rock strata such as hard / dense soil, soft / loose soil, sandy clay, red clay, moorum , weathered rock, hard rock, slightly fracturered rock, pebbeled rock or any other geologoical formation at given location by ground water survey experts complete all as per IS-2800 for a depth not exceeding 6.00Mtr below ground level complete all as specified and as directed.

All as per Item No 3.00 above but depth of bore hole from 6.00 Mtr to 20.00 Mtr depth with 220 mm bore and including lowering of PVC Casing pipe of 180mm dia complete all as specified and as directed.

All as per Item No 3.00 above but depth of bore hole from 20.00 Mtr to 100.00 Mtr depth with 165 mm bore and including lowering of PVC Casing pipe of 165mm dia complete all as specified and as directed.

Notes for Item No 3 to 5 :- (i) Borewell location will be as shown by the Engineer in charge. (ii) Strata chart to be submitted by the contractor to the department as per strata obtained during drilling. (iii) Cost of Electro logging test (01 No) for water bearing zone identification including all tools and equipment complete is also deemed to be included in the rates quoted by the contractor.

Supplying lowering, jointing, connecting and fixing of PVC Casing Pipes 140mm dia from Ground Level to bottom level of bore hole fully slotted including provision of suitable size of bore plugs, testing accessories like pipe clamp, Nut bolts, bottom lowering plate, column pipe clamp, borewell cover made up of MS sheet 3 mm thick split type on both ends (i.e. top and bottom) suitable for 140mm bore PVC pipe, locking arrangement and making 50mm to 65mm hole for insertion of column pipe in centre of the borewell including necessary welding required at site and cover shall be suitable for 140mm dia PVC bore well etc complete all as directed.

Supply and packing with pea gravel of size (5 to10)mm of approved quality, free from other foreign material packed between casing pipe and slotted pipe in borewell complete all as specified and directed.

Developing / drilling / reaming of bore well drilled under BOQ Sl Item No 3 to 5 here-in-before for enlargement of dia of bore hole of 165mm dia to 250mm dia vertically by using high speed reverse rotary fast rig machinery or any other approved method through any type of soil / rock strata such as hard / dense soil, soft / loose soil, sandy clay, red clay, moorum , weathered rock, hard rock, slightly fracturered rock, pebbeled rock or any other geologoical formation at given location by ground water survey experts all as per IS-2800 (Amd upto date) for a depth not exceeding 100m below ground level complete all as specified and as directed.

Notes for BOQ Item No 8:-

(a) Borewells to be dugged in Pallavaram area as directed by the Eng-in-Charge

(b) The unit rate quoted is deemed to be inclusive of collection of soil samples and strata, removal of mud and slurry from the site, hiring charges of rig, Tools & Plants, machinery, fuel charges, labour, consumables, transportation. drilling and operation including use and waste of all necessary appliances and materials complete in all respects to the entire satisfaction of Engineer-in-Charge.

(c) GE shall ensure that the work is carried our as per the recommendation of CGWB report in respect of location and depth before commencement of work.

(d) ERW / MS pipe, MS cap and PCC as required shall be measured and paid separately.

(e) The hydrogeological investigation by CGWB is available in the office of GE Chennai. The tenderer shall refer the same before quoting for the items.

(f) Cost of developing and flushing the bore well with high pressure compressed air and thereafter by pumping muddy water with 25% extra capacity pump till clear water flows out completely is deemed to be included in the rates quoted by the Contractor.

(g). Developing period shall be 12 hours (Min) or till clear water flows whichever is later. Yield Test to be submitted by the contractor in last two hours of development by using "V" Notch method and the same is deemed to be included in the rates quoted by the Contractor.

(h) Verticality test to ensure the verticality of the borewell as per IS-2800 (latest edition) is also deemed to be included in the rates quoted by the contractor.

GI pipe 65mm dia heavy weight (class-C) and lowering in bore well in 3.00mtr lengths with heavy grade flanges as per the IS :1239 Part I with latest amenment complete all as specified and directed by the Eng-in-Charge.

Supply, installation, testing and commissioning of vertical submersible pump set electric driven suitable for discharge 2.6 LPS, at 120.00 Mtr head 415V, 50HZ suitable from 165mm dia bore well complete all as specified and as directed by the Eng-in-Charge

Stainless Steel Grade, SS 304 wire rope 8mm dia complete all as IS-2266 : 2002 specified and directed.

Flat PVC Insulated and PVC sheathed industrial submersible water proof cable for submersible pump motors 1100 volts grade, 3 core, cross sectional area 6 sqmm connected with necessary ferrules / water proof joint complete all as specified and as directed.

Collection of water sample for testing of water in the approved Lab/testing kit as per the directions of Engr-in-Charge and submission of original test reports for the following tests: Water sample- (i) Testing of Physical and Chemical parameters for domestic/non-domestic purpose (viz Apperance, colour, odour, turbidity, E.C, TDS, pH, alkalinty, hardness, Ca. Mg, (ii) E Coil Count (iii) Residual Chlorine (iv) Total suspended solids.

Supply, Fabricate, install, connect, test and commissior, LT Feeder Pillar Box outdoor type totally enclosed, compartmentalised for each switch gear, powder coated, weather and vemedy weather proof, 1100 volts, 50HZ, AC supply, factory made fully compartmentalised made out of 3.15mm thick CRCA sheet stell for load enlcosure IP 54 as per IS 8823 complete including suitable angle iron/flat iron frame work/supports, base support MS channel ISMC 75 etc, as required with and including the following fupplied fitted and connected internally complete, 3 phase, 4 wire, 415/500V, 50HZ, bottom with detachable plates, front and rear with hinged type door and locking arrangements, chamber for copper bus bars, chamber for cable on both side, louvers and air vent for natural air flow, holes drilled for connections, separate chamber for metering equipment and each switch gears complete suitable for mounting following switch gear items internally connected with suitable capacity aluminium strip/rods insulated, complete mounted on MS channel ISMC 75 complete all as specified and comprising of the followings:- (a) 4 Nos busbar of equal size of copper conductor with PVC coloured heat shankable type sleeves contineous rating of 100 Amps mounted on fibre reinforced insluator with suitable rating CTs-01 set. (b) Digital type multifunction meter-01 No. (c) LED indiction lamps on incoming side-01 set of three.

INCOMING:- (i) MCCB thermal magnetic release type of capacity 63 amps, 4 pole, 415 Volts, 50 HZ, LCU : 15 KA-01 Nos. OUTGOING:- (i) MCCB thermal magnetic release type of capacity 63 amps, 4 pole, 415 Volts, 50 HZ, LCU : 15 KA-01 Nos. (ii) Inbuilt submersible pump starter comprising of the following items:- Submersible pump starter, star delta, fully automatic suitable for submersible pumpser having relay range 8.9 to 13.5 amps, contactor rating-18Am, Volts-380-415V, ON/OFF push button with indicator. (iii) LED indicating lamps-01 set. (iv) Digital type ammeter Make : L&T/Legrand/ABB-01 No (v) Digital type Voltmeter Make : L&T/Legrand/ABB-01 No

SCH "A" PART-II (EXTERNAL ELECTRIFICATION)

Supply, installation, testing and commissioning of Transformer, platform/plinth mounted of capacity 400KVA step down, BEE Star rating 2 and above (energy efficiency level 2 and above, total losses @ 50% of full load is 1150W and total losses @ 100% of full load is 3330W), indoor type, copper wound vector group DYN 11, 11/0.433 KV, AC, 3 phase, 50 Hz on secondary side double wounded, oil immersssed, naturally air cooled with external cooling tubes/radiator having tapping at (+/-)2.5%, (+/-)5%, (+/-)7% changed by hand operated off load tap changing gear the maximum temp rise not exceed 40 Deg in oil and 45 Deg in HV/LV winding when measured by the resistance method after continous full load run in ambient temperature of 50 Deg and the transformer with ISI mark and confirming to IS 1180 (part-I) 2014 amended up to date and comprising of the following accessories :

(a) Cable box on HV side (01 No) consisting of 3 Nos porcelain HV bushings suitable for 11KV complete with bushing rods, nuts and washers etc. (b) Cable box on LV side (01 No) consisting of 4 Nos porcelain bushing with bushing rods washers with cable gand of suitable size of reception of cable. (c) Oil conservator tank with filter type drain valve. (d) Dehydarting breather assembly with first filling of silica gel. (e) Explosive vent with double diaphram & sight glass. (f) Two earthing terminals on transformer body to facilitate of 32X6 mm GI strip. (g) Thermometer dial type, vapour pressure type (01 No) having range 0-120 Deg. (h) Rating and terminal making plate. (i) Oil level gauge as per manufacturers Instructions and IS Code (j) Oil filling port on top cover with plate. (k) Lifting lugs (4 Nos). (l) Plain solid cast steel detchable rollers (04 Nos) (m) Extra bushing for neutral, outside the cable box for providing independent earthing. (n) First filling of new transformer oil conforming to relevent is and tested up to 60 KV dielectric strength at 2.5 mm gap. (o) Cooling valves. (p) Filter valves.

Supply, installation, testing and commissioning of Transformer suitable for trailor mounting of capacity 400KVA step down, BEE Star rating 2 and above (energy efficiency level 2 and above, total losses @ 50% of full load is 1150W and total losses @ 100% of full load is 3330W), Outdoor type, copper wound vector group DYN11, 11/0.433 KV, AC, 3 phase, 50 Hz on secondary side double wounded, oil immersssed, naturally air cooled with external cooling tubes/radiator having tapping at (+/-)2.5%, (+/-)5%, (+/-)7% changed by hand operated off load tap changing gear the maximum temp rise not exceed 40 Deg in oil and 45 Deg in HV/LV winding when measured by the resistance method after continous full load run in ambient temperature of 50 Deg and the transformer with ISI mark and confirming to IS 1180 (part-I) 2014 amended up to date and comprising of the following accessories :

(a) Cable box on HV side (01 No) consisting of 3 Nos porcelain HV bushings suitable for 11KV complete with bushing rods, nuts and washers etc. (b) Cable box on LV side (01 No) consisting of 4 Nos porcelain bushing with bushing rods washers with cable gand of suitable size of reception of cable. (c) Oil conservator tank with filter type drain valve. (d) Dehydarting breather assembly with first filling of silica gel. (e) Explosive vent with double diaphram & sight glass. (f) Two earthing terminals on transformer body to facilitate of 32X6 mm GI strip. (g) Thermometer dial type, vapour pressure (01 No) type having range 0-120 Deg. (h) Rating and terminal making plate. (i) Oil level gauge. (j) Oil filling port on top cover with plate. (k) Lifting lugs (4 Nos). (l) Plain solid cast steel detchable rollers (04 Nos) (m) Extra bushing for neutral, outside the cable box for providing independent earthing. (n) First filling of new transformer oil conforming to relevent is and tested up to 60 KV dielectric strength at 2.5 mm gap. (o) Cooling valves. (p) Filter valves.

Supply of 3 Ton capacity trailor suitable size for mounting 400KVA Outdoor type Transformer alongwith and including the following accessories. (a) Pneumetic tyres ( 4 Nos + 1 No for Spare). (b) Parking brake. (c) Spring loaded draw bar. (d) Leef spring based Suspension system. (e) Idling screw jack 4 Nos. (f) 250x25x5mm size copper strip(tin coated) for bus bar arrangment of body earthing, including drilling, clamping on the trailer floor including necessary SMC insulator for supporting etc all as required - 2 Nos. (g) Fire extinguiser 4.5Kg capacity CO-2 with suitable mounting provision-01 No. (h) HT&LT danger boards of size 200mmX150mm made of MS sheet in signal red with white base at all sides of the trailer. (i) Suitable provison for fixing LT main control unit. (j) Suitable mounting provison for HT U/G cable 120sqmm of length 50 RM (k) Suitable mounting provison for LT U/G cable 240sqmm of length 75 RM. Note : (1) Transformer, LT & HT U/G cables will be measured and paid seperately under relevant item. (2) Rate quoted is deemed to be inclusive of two coats of Synthetic enamel painting to complete trailer unit including and with provison of One spare wheel as approved by the GE with suitable towing arrangment.

PCC type C1, 1:3:6 using 20mm graded stone aggregate for Transformer plinth complete all as specified and directed by Engr-in-Charge.

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 120 Sqmm complete.

Supply & Laying XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured, electric power HT Cables (heavy duty) with aluminum conductor, 11000 volts Earthed, grade cross sectional area 120 sqmm 3 core complete all as specified.

Suply & Laying in trenches or fixed on wall or passing through pipes/in floors connecting up testing and commissioning of XLPE insulated armoured LT UG electric cable with aluminum conductor 1100V grade of size 240 sqmm 3.5 core complete all as specified.

Shifting of Transformer of capcity 250KVA (approx wt- 1000 Kgs) after disconnecting the existing cable terminations and transporting safely for MES STORE YARD. (utpo a distance of 4 KM).

Shifting of transformer of capacity 100KVA (approx wt- 600 Kgs) after disconnecting the existing HT/LT cables and transporting safely to new location and installing the same transformer on the existing platform and connecting the existing LT/HT cables, testing complete all as specified. (utpo a distance of 4 KM).

Fabricate, supply and install LT junction box made of powder coated sheet with suitable angle iron support of adequate size to accommodate 630 Amps MCCB (01 No), 4 Pole and mounted on trolley with suitable fixing arrangment complete with the following accessories :- Notes :- (i) LT danger notice with conventional skull bones indication written with english and local language. (ii) LED indicating lamps for main supply indicating R' Y' B' - 01 Set of 3. (iii) Multi function meter (Voltmeter, ammeter, PF meter, frequency meter etc). (iv) MCCB 630 Amps 36KA 4 Pole thermal magnetic setting complete - 01 No.

Earthing complete with galvanised steel earth plate electrode of size 60cmX60cmX6mm thick burried directly in ground (earth pit not less than 2.25M deep below the normal ground level) with top edge of the plate not less than 1.5M below normal GL connected to GI earth strip of size 32X6 mm by means of bolts, nuts, check uts washers of GI or steel all as shown in electrical plate No-5 of SSR Part-I connected to machanery/equipments installed power house/sub station all as specified including testing on completion. Note :- (i) the Unit rate is inclusive of excavation in any type of soil, PCC (1:3:6) type C1 for pit, RCC 1:2:4 type B-1 cover reinforced with 8 mm dia CTD bars @150mm C/C both ways funnel with 15mm bore GI watering pipe 20mm dia bore GI protection pipe wire mesh and copper lugs complete in addition to item No 1(a) to (e) of preamble under sub heading earthing specified on Sl Page No 389 of SSR Part-II 2020. (ii) Marking the earth chamber with date of test, name of machine and earth value.

SHRE GURMUKHDAS CONTRACTOR PVT. LTD.