REPAIR AND COMPREHENSIVE MAINT OF EARTHING INFRASTRUCTURE LIGHTENING ARRESTORS WATCH TOWER AUTOMATIC CLOCK ASSEMBLY AND ASSOCIATED CONNECTED ITEMS AT NDA KHADAKWASLA

Amount

Labour only for cleaning the vegetation/surplus soil around the earth pits upto 1.00 mtr all around the pit, cleaning the chamber of the earth pit, replacing the rusted earthing leads/funnel / mesh with new ones etc checking the results of the earthing using earth tester, re-activating the earth pit using suitable measures as required to bring the results within the limits of 5 ohm all as specified and directed. NOTE : a) All materials required for re-activation of earthing pit will be measured and paid separately under supplied & fixed only of respective item of schedule. b) The resistance test of earth pits to be carried out by contractor.

Supply only common salt suitable for re-activating of earth pits all as specified and as directed.

Supply only Back fill compound suitable for re-activating of earth pits complete all as specified and as directed.

Supply only Charcoal used for re-activating of earth pits complete all as specified and as directed.

S&F in replacement of air termination single pointed solid Aluminium rod 12mm dia, 300mm long mounted roof of building all as specified and directed.

S&F in replacement of GI Strip 25 x 4 mm with saddles and fixing screws etc for down conductor above ground including jointing with rivets/ brazing etc all as directed all as specified and directed.

S&F in replacement of copper strip 20 x 3 mm with saddles and fixing screws etc for roof/down conductor above ground including jointing with rivets/ brazing etc all as specified and directed.

S&F in replacement of test point terminal block made of gun metal / phosphorus bronze/copper of size 75x75x25mm drilled and screwed including 3 Nos 8mm dia 25mm long hexagonal head screw all as specified and directed.

S&F in replacement of aluminium strip 25 x 3 mm with saddles /insulators everry 1 mtr of interval and fixing screws etc for roof/down conductor above ground including joining with rivets, bolts, nuts, washers etc on the roof of Sqn buildings necessary scafolding work or protective arrangement made by contractor all as specified and as directed

M & L for scrapped down/peeled off old paint with abrasive paper and applying two coats of synthetic enamel paint of post office RED Colour on both side of board (size 1.5m x 1.5m) and re-writing the letters as "NO ADMISSION WITHOUT PERMISSION" with White paint according to existing size of letters and two coats of black paint on its border and two fixing supports of MS round pipe of height 2.5 mtr complete all as specified and directed. Note : This job shall be carried out through experienced Painter and decorator.

Supply and fixing in replacement of 35 Sqmm single core multistranded Copper Cable, 1100 Volts PVC insulated on wall / roof of building in conduit with clamps for connection of isolation trasformer to DB with copper lugs, SS nut bolts and washers accessories as per site requirement complete all as specified and directed

M&L in replacement of earthing complete with Copper earth plate electrode 90cmx60cm x 5 mm thick buried directly in ground vertically to depth not less than 2.25 mtr below ground level with top edge of earth plate at a depth not less than 1.5 mtr below normal ground level connected to and including Copper strip of 32x6mm as earth lead up to 7.5 mtr long fixed by means of bolts, nuts, check nuts and washers etc. of galvanised iron or steel including provn of GI protection pipe light grade of 40mm bore and connected to earth strip earthing test point all as shown in electrical plate No.5 of SSR Part-I 2009 and as specified or indicated and testing on completion including necessary excavation & earthwork in any type of soil, PCC (1:3:6) type C1 chamber, precast slab 50mm thick in cement concrete (1:2:4)type B1 (reinforced with welded steel wire fabric (XPM) of weight not less than 4kg/sqm) with frame, funnel with watering pipe of 15mm bore medium grade, wire mesh and lugs, test point including salt, Coal etc. complete all as specified and directed. . Note: Copper strip exceeding 7.5m long shall be measured & paid separately. The earth resistance value less than 1 ohm. Failing to achieve the value the contractor shall be re do the earthing without any extra cost.

S&F in replacement of air termination single pointed solid Copper rod 12mm dia, 300mm long mounted roof of building all as specified and directed.

M&L in replacement of earthing complete with galvanised steel earth plate electrode 60cmx60cm x 6 mm thick buried directly in ground vertically to depth not less than 2.25 mtr below ground level with top edge of earth plate at a depth not less than 1.5 mtr below normal ground level connected to and including GI strip of 25x4mm as earth lead up to 7.5 mtr long fixed by means of bolts, nuts, check nuts and washers etc. of galvanised iron or steel including provn of HDPE/GI protection pipe light grade of 32/40mm bore and connected to earth strip earthing test point all as shown in electrical plate No.5 of SSR Part-I 2009 and as specified or indicated and testing on completion including necessary excavation & earthwork in any type of soil, PCC (1:3:6) type C1 chamber, precast slab 50mm thick in cement concrete (1:2:4)type B1 (reinforced with welded steel wire fabric (XPM) of weight not less than 4kg/sqm) with frame, funnel with watering pipe of 15 mm bore , wire mesh and lugs, test point etc. complete. Note: G I strip exceeding 7.5m long shall be measured & paid seperately.

M&L in replacement of maintenance free grounding Solution set earthing comprising of 17.2 mm pure copper earthing rod, 3m long, Copper terminal size of 100x48x6mm with 2 Nos holes for termination. Electrode must be tested for a short circuit test of minimum 40 KA at CPRI/NABL. The earthing electrode will be placed in the ground after a bore is drilled to the depth of 3.5 Mtr. The bore drilling will be done with the help of a Pneumatic boring machine, 50 Kgs BFC will be placed in the bore to cover the earthing rod from all sides. BFC will be poured in Slurry form in a properly mixed condition. The Earth pit cover Square 300x300x240 mm to be provided to cover the Earth Pit and shall be made of reinforced FRP and should be capable of carrying the weight of 5 Tons. Make : "U-PROTEC" or equivalent in Ashlok earthings/JEF technology NOTE :- (a) Rates of boring 3.5 Mtr for earth electrode, copper strip 25x3 mm upto 7.5 Mtr from earth electrode is deemed to be included in the quoted rate. (b) On testing, after completion, if the earth resistance <3 ohms is not obtained, earthing will be rejuvenated at no extra cost till the desired earth resistance is obtained. (c ) Test certificate from the OEM has to be produced by the contractor for the material used in earthing.

S&F in replacement of flood light fitting with LED 150 watts, white in colour, LM6 aluminium or higher grade powder coated, water proof pressure die cast aluminium enclosure, with in built electronic drivers, IP 66 protection, single phase, fixing in MS chanel by drilling hole of suitable size, using nut, bolts and washers including fixing arrangements on top of building complete all as specified and as directed.

M&L in replacement of earthing complete with galvanised steel earth plate electrode 60cmx60cm x 6 mm thick buried directly in ground vertically to depth not less than 2.25 mtr below ground level with top edge of earth plate at a depth not less than 1.5 mtr below normal ground level connected to and including GI wire 4 mm as earth lead up to 7.5 mtr long fixed by means of bolts, nuts, check nuts and washers etc. of galvanised iron or steel including provn of GI protection pipe light grade of 40mm bore and connected to earth strip earthing test point all as shown in electrical plate No.5 of SSR Part-I 2009 and as specified or indicated and testing on completion including necessary excavation & earthwork in any type of soil, PCC (1:3:6) type C1 chamber, precast slab 50mm thick in cement concrete (1:2:4)type B1 (reinforced with welded steel wire fabric (XPM) of weight not less than 4kg/sqm) with frame, funnel with watering pipe of 15mm bore , wire mesh and lugs, test point etc. all as specified and directed. Note: G I earth wire exceeding 7.5m long shall be measured & paid seperately.

S&F in replacement of 70 Sqmm single core multistranded Copper Cable, 1100 Volts PVC insulated on wall / roof of building with clamps for connection of lightening arrestor to earthing terminal with copper lugs, SS nut bolts and washers accessories as per site requirement complete all as specified and directed.

Supply & Laying in repairs in trenches or fixing on wall/floor/ceiling GI tubing "Medium Grade" 15 mm bore with all standard fittings such as suitable size of MS clamps, screws, hooks, Elbow, bends, tees etc complete all as specified and directed

S & F in repairs of Bronze/Gun Metal Gate Valves (Hexagonal type) 15 mm bore with iron wheel head, screwed both ends for iron pipe and fixed complete all as specified and directed

S & F in repairs of Bib tap /Stop Cock of PTMT any colour, 15 mm dia, screwed for pipes high pressure (minimum weight 90 gms) complete all as specified and directed

Cutting of existing steel tubing for alterations or addition in position without taking down and screwing for addition of Tee, etc for 20 mm bore connection complete all as specified and directed. Note :- The cost of excavation , earthwork and fitting of pipe line required at site shall be deemed to be included in unit rate quoted by the tenderer

M&L for provn of earth chamber of size 38x38x30 cm, with PCC 1:3:6 type C1 (using 20mm size graded stone aggregates) chamber, precast slab 50mm thick in cement concrete (1:2:4) type B1 (reinforced with welded steel wire fabric (XPM) of weight not less than 4kg/sqm) with frame including dismantling of existing all as specified and directed.

M & L for Dismantling and taking out carefully existing one face of tower clock completely and servicing, repairing and overhauling of the Clock Hands, GPS synchronized time server master control units (MCU) with GPS Antena , GPS synchronizing circuit and one units with high torque stepper motors and its driving gears and spindles etc of the clock hands of 9' diameter tower clock. The work includes checking of all electrical connection of one face of Tower clock and LED based illumination of the hands and indices complete as per site requirement complete all as specified and directed. Note : -(i) The rates quoted against the Item is deemed to be included for cost of labour, minor parts for repair. (iii) Any damage to Parts of Tower Clock during the execution of Item and while in the custody of the contractor shall be made good at no extra cost to govt.

M &L for The synchronizing of all one face with GPS real timing to reset / correct the time on resumption of the contact with satellite time, if it finds any deviation. The Auto Re-set Indexing System shall be capable of bringing back the clock hands to 12:00 clock position and then start counting time and give required pulses to move the clock-hands to the actual time of the day without any manual setting and also automatically re-set the time on resumption of power after a power-break. The items require for functionalling to be included in it complete all as specified and as directed.

M & L in repalcement of Clock hands (Hours and Minute hands) made up of lightweight , corrosion-resistant aluminium, LED illuminated for outdoor durability complete all as specified and as directed

S & F in replacement of Tower clock controller for GPS synchronisation with power supply arrangement complete all as specified and as directed.

M & L in replacement of back up system of 12 Volts 9 AH capacity dry type suitable to existing tower clock system complete all as specified and directed.

M&L for brought out high raising over head crane/boom at site for doing external repair work for replacement of unserviceable parts on the facia of tower and carry out servicing and maintenance of tower clock all as specified and as directed

S & F installation and commissioning in replacement of tower clock assembly having electro mechanical, waterproof feature , high -precision components made from rust-resistant stainless steel and brass key components include the center shaft, worm wheel, center wheel, canon pinion, hour and minute hand wheels, arm bushes, and bearing for seamless, long term operation in outdoor condition supported dial size up to 9 feet dial diameter and GPS fixing time less than 1 minute including its accessories as per existing sample complete all as specified and as directed.

M & L in repalcement of LED Illumination, colour as directed of one face of 9' dials (Indices & clock hands) LED lighting :- Each face of the 9' dia tower clock shall be provided with LED lighting arrangment of reputed brand suitable for outdoor lighting complete all as specified and as directed. Note - Necessary working platform / scaffolding for fixing the LED illumination system on the external face of the tower (clock) at MP Block (approx height of Clock 40 Mtr from ground lavel) shall be arranged by the vendor / contractor and the unit rate quoted is deemed to be included the cost of it.

M & L in replacement of 110- 240 V +15% AC, 50 Hz input and 12V DC, 30 Amp output SMPS suitable to existing system of tower clock LED illumination of the dial (indices) complete all as specified and directed.

Supply and Installation in replacement of Conventional Lightening Arrester Pure Copper with base plate 14 mm Dia and 1 Mtr in length cylindrical type 4 spike (solid) with proper foundation on the roof of buildings necessary scafolding work or protective arrangement made by contractor for execution of work complete all as specified and as directed.

S & F in replacement of digital timer switch, suitable for working between 110 to 240 V, AC, 50 Hz and capable for setup of 25 programs or suitable/compatible to existing tower clock system and also for siren complete all as specified and directed.

S&F in replacement of GI Strip 32 x 6 mm with saddles and fixing screws etc for down conductor above ground including jointing with rivets/ brazing etc all as directed complete complete all as specified and directed.

S&F in replacement of 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 required 4 mm dia galvanised iron or steel wire including jointing with rivets/ brazing etc complete all as specified and directed

M&L for PCC (1:3:6) type C1 (Using 20mm graded coarse aggregate) for coping of poles/ pathways including fair finishing the exposed surfaces even and smooth without using extra cement including necessary formwork complete all as specified and as directed

S&F in replacement of flood light fitting with LED 250 watts, white in colour, LM6 aluminium or higher grade powder coated, water proof pressure die cast aluminium enclosure, with in built electronic drivers, IP 66 protection, single phase, fixing in MS chanel by drilling hole of suitable size, using nut, bolts and washers including fixing arrangements on top of building complete all as specified and as directed.

M&L for earthing complete with Copper earth plate electrode 60cmx60cmx3.15mm thick buried directly in ground vertically to depth not less than 2.25 mtr below ground level with top edge of earth plate at a depth not less than 1.5mtr below normal ground level connected to and including copper strip of 20x3mm as earth lead upto 7.5mtr long fixed by means of bolts, nuts, check nuts and washers etc. of brass including provn of GI protection pipe light grade of 32/40mm bore and connected to earth strip earthing test point all as shown in electrical plate No.3 of SSR Part-I 2009 and as specified or indicated and testing on completion including necessary excavation & earthwork in any type of soil, PCC (1:3:6) type C1 chamber, precast slab 50mm thick in cement concrete (1:2:4) type B1 (reinforced with welded steel wire fabric (XPM) of weight not less than 4kg/sqm) with frame, funnel with watering pipe of 15mm bore, wire mesh and lugs, test point etc. complete all as specified and directed. Note: copper strip exceeding 7.5m long shall be measured & paid separately.

Material and labour for repairs, servicing, cleaning and testing of mechanical chimney, electrically operated 3 phase 4 wire system of the kitchen by removing the hood and cleaning, duct removing and cleaning , cloth changing , replacing of its all unserviceable parts such as electric motor servicing /rewinding, starter, dampers of exhaust, exhaust opening pipe, bearings, shafts etc of suitable size including its connected items required at site and make it serviceable complete all as specified and directed.

Material and labour in replacement of impeller suitable for electric chimney including alignment and its connected items required at site and make it serviceable complete all as specified and as directed.

S&F in replacement 4 Sqmm 4 core multistranded Copper Cable, 1100 Volts PVC insulated on wall / roof of building with clamps for connection of electric chimney from motor to starter panel with copper lugs, SS nut bolts and washers accessories as per site requirement complete all as specified and directed

Excavation in trenches, n.exc 1.5m wide and n. exc 1.5 m depth and getting out in for foundation of pole, stay, laying of cable and pipe line etc through soft/loose soil all as specified and as directed.

Returning and filling in, including spreading and well ramming in layers n exc 25 cm all as specified and directed.

Removing excavated material a distance n. exc 50 m & depositing where directed at a level n. exc 1.5 m above the starting point complete all as specified and as directed.

M&L in replacement of earthing complete with galvanised steel earth plate electrode 60cmx60cm x 6 mm thick buried directly in ground vertically to depth not less than 2.25 mtr below ground level with top edge of earth plate at a depth not less than 1.5 mtr below normal ground level connected to and including GI strip of 32x6mm as earth lead up to 7.5 mtr long fixed by means of bolts, nuts, check nuts and washers etc. of galvanised iron or steel including provn of HDPE/GI protection pipe light grade of 32/40mm bore and connected to earth strip earthing test point all as shown in electrical plate No.5 of SSR Part-I 2009 and as specified or indicated and testing on completion including necessary excavation & earthwork in any type of soil, PCC (1:3:6) type C1 chamber, precast slab 50mm thick in cement concrete (1:2:4)type B1 (reinforced with welded steel wire fabric (XPM) of weight not less than 4kg/sqm) with frame, funnel with watering pipe of 15 mm bore , wire mesh and lugs, test point etc. complete all as specified and directed Note: G I strip exceeding 7.5m long shall be measured & paid seperately.

Shriyansh sales and services (BID ID -3417196)

R. P. Suppliers and Construction Co. (BID ID -3419562)

KESARI AND SONS (BID ID -3418877)

M/S JVS ENGINEERING (BID ID -3416986)