REPAIR / MAINT OF UPS, STABILIZERS, OT LIGHTS, SERVO CONTROLLED BACKUP SYSTEM AND OTHER ALLIED WORKS AT INHS DHANVANTARI AND REPAIR/ RENEWAL TO EARTHING AT CERTAIN OTM AND MD ACCN, INSTALLATIONS AT MINNIE BAY UNDER GE MINNIE BAY PORT BLAIR

Amount

M&L for carrying out inspection, checking, repair, maintenance and attending breakdowns for IGBT based UPS of capacity 40 KVA at INHS Dhanvantari comprising of the following outlined services:- (a) The Contractors technical team shall visit the installation site for periodic preventive maintenance check up of the UPS system and the batteries for every 2 months other than breakdown job . During this the system shall be cleaned and general performance will be checked including inspection of all spare parts such as iGBT, Drive cards, relay cards, AC capcitors, inverter cooling fan, ceramic fuses and including replacing the defective spares if any complete, re-assembling, calibration of UPS complete and testing & commissioning complete all as specified and as directed by Engineer-in-Charge. (b) DC back up source will be maintained by applying white petrolium jelly, checking/ servicing of batteries etc as applicable. (c) Apart from the periodic preventive maintenance visits, all break down calls on the systems covered under contract shall be attended. (d) Cost of all the spares except Charger card, Power card, Driver card, AC/DC capacitors, IGBT, feed back / isolation transformer, replacement of Batteries to put the UPS in working condition shall be born by the contractor during the contract period. (e) Response time during normal working hours shall be 4 Hrs from the time of receipt of complaint and the resolution time shall bemaximum 48 hrs, based on the nature of complaint and replacement of components and boards.

(f) Major Spares such as Charger card, Power card, Driver card, AC/DC capacitors, IGBT, feed back/ isolation transformer, replacement of Batteries required will be measured & paid separately under relevant Schedule. All other spares required for rectifier & inverter section such as other connecting cards, Input fuses, SCR, Inverter cooling fan etc for keeping the UPS in operational state are deemed to be included in the quoted rate. (g) In addition to the above the contractor shall attend and rectify all types of defects arised during the contract period, to keep the UPS system in operational condition. (h) Each UPS will be measured as one Job and any breakdown will be measured seperately.

M&L for carrying out inspection, checking, repair, maintenance and attending breakdowns of IGBT based UPS of capacity 05 KVA at INHS Dhanvantari/ other OTM locations at Minnie Bay comprising of the following outlined services:- (a) The Contractors technical team shall visit the installation site for periodic preventive maintenance check up of the UPS system and the batteries for every 2 months other than breakdown job . During this the system shall be cleaned and general performance will be checked including inspection of all spare parts such as iGBT, Drive cards, relay cards, AC capcitors, inverter cooling fan, ceramic fuses and including replacing the defective spares if any complete, re-assembling, calibration of UPS complete and testing & commissioning complete all as specified and as directed. (b) DC back up source will be maintained by applying white petrolium jelly, checking/ servicing of batteries etc as applicable. (c) Apart from the periodic preventive maintenance visits, all break down calls on the systems covered under contract shall be attended. (d) Cost of all the spares except Charger card, Power card, Driver card, AC/DC capacitors, IGBT, feed back / isolation transformer, replacement of Batteries to put the UPS in working condition shall be born by the contractor.

(e) Response time during normal working hours shall be 4 Hrs from the time of receipt of complaint and the resolution time shall bemaximum 48 hrs, based on the nature of complaint and replacement of components and boards. (f) Major Spares such as Charger card, Power card, Driver card, AC/DC capacitors, IGBT, feed back/ isolation transformer, replacement of Batteries required will be measured & paid separately under relevant Schedule. All other spares required for rectifier & inverter section such as other connecting cards, Input fuses, SCR, Inverter cooling fan etc for keeping the UPS in operational state are deemed to be included in the quoted rate. (g) In addition to the above the contractor shall attend and rectify all types of defects arised during the contract period, to keep the UPS system in operational condition. (h) Each UPS will be measured as one Job and any breakdown will be measured seperately.

M&L for carrying out inspection, checking, repair, maintenance and attending breakdowns for IGBT based UPS of capacity 80 KVA at INHS Dhanvantari comprising of the following outlined services:- (a) The Contractors technical team shall visit the installation site for periodic preventive maintenance check up of the UPS system and the batteries for every 2 months other than breakdown job . During this the system shall be cleaned and general performance will be checked including inspection of all spare parts such as iGBT, Drive cards, relay cards, AC capcitors, inverter cooling fan, ceramic fuses and including replacing the defective spares if any complete, re-assembling, calibration of UPS complete and testing & commissioning complete all as specified and as directed by Engineer-in-Charge. (b) DC back up source will be maintained by applying white petrolium jelly, checking/ servicing of batteries etc as applicable. (c) Apart from the periodic preventive maintenance visits, all break down calls on the systems covered under contract shall be attended. (d) Cost of all the spares except Charger card, Power card, Driver card, AC/DC capacitors, IGBT, feed back / isolation transformer, replacement of Batteries to put the UPS in working condition shall be born by the contractor during the AMC period.

(e) Response time during normal working hours shall be 4 Hrs from the time of receipt of complaint and the resolution time shall bemaximum 48 hrs, based on the nature of complaint and replacement of components and boards. (f) Major Spares such as Charger card, Power card, Driver card, AC/DC capacitors, IGBT, feed back/ isolation transformer, replacement of Batteries required will be measured & paid separately under relevant Schedule. All other spares required for rectifier & inverter section such as other connecting cards, Input fuses, SCR, Inverter cooling fan etc for keeping the UPS in operational state are deemed to be included in the quoted rate. (g) In addition to the above the contractor shall attend and rectify all types of defects arised during the contract period, to keep the UPS system in operational condition. (h) Each UPS will be measured as one Job and any breakdown will be measured seperately.

Supply only the following spares for carrying out repairs to UPS of capacity 40 KVA :-

a) Charger Card

b) Power Card / Mother board

c) Capacitor

d) IGBT

e) Isolation/ feed back transformer

f) Driver card

Supply only the following spares for carrying out repairs to UPS of capacity 5 KVA :-

a) Charger Card

b) Power Card / Mother board

c) Driver Card

d) Capacitor

e) IGBT

f) Isolation/ feed back transformer

g) 12 V, 18 AH SMF Batteries

Supply only the following spares for carrying out repairs to UPS of capacity 80 KVA:-

a) Charger Card

b) Power Card / Mother board

c) Driver Card

d) Capacitor

e) IGBT

f) Isolation/ feed back transformer

g) 12 V, 100 AH SMF Batteries

Disconnecting & removing existing unserviceable battery and S&F 12V, 200 AH tubular battery including terminal clamps, copper lead of suitable length including testing and commissioning complete all as specified and directed by Engineer-in-Charge.

M & L for servicing, maintenance, repair & attending break down calls of M/s STERIS make surgical OT lights by authorized rep of OEM by inspecting parts / spares for general repairs / servicing as per the following scope of work given below for smooth and trouble free operation of equipment to the entire satisfaction of user / department complete all as specified and directed by Engineer-in-Charge. (i) Wiring inspection: Switch OFF, strip opening of OT light covers. Inspection of wiring in suspension from control board for loose connections, pitted terminals, peeled of insulation and rectifing all defects Mechanical connections: Inspecting movements of all arms for smooth functioning including lubrication and replacement of defective parts complete. Adjustment/ replacement of tension springs, inspecting all screws, yoke load supports, securing keys and other connected accessories complete as per OEM instructional manual and rectifying the defects inclusing replacement of defective parts for ensuring smooth operation of all mechanical connections

(iii) Lightheads: Restore power supply, verify that the sterile handle seats firmly and latches securely on the mount, check condition of lens for scratches, cracks, turn on light and increase to maximum intensity, verify smooth rotation of the pattern size change system, verify all LEDs lit. Trouble shoot if observe any modules having unlit LEDs. (iv) Control: Connect with service software to analyse data synchronization, run hour, LED Module mA measurement, digital live voltage measurement and observe current levels when on maximum intensity. Calibrate only if lights are not maintaining at or near target/ rated current. Turn on light and verify light operation through all intensities. (v) Articulations: Fully articulate suspension about each pivot point. verify range of motion, ease of movement, and that light/ display does not flicker. Check thet light/ monitor does not drift when positioned. Tighten and/or replace brake screws as required and adjust tension as required and verify over all condition of arms for smooth movement. Re-install covers and inspect all arms for missing or loose screws all per OEM instructional manual and recommendation.

Note: (a) The rep of OEM shall visit the installation site for periodic preventive maintenance check up of the OT surgical lights for every 3 months other than breakdown job. (b) Apart from the periodic preventive maintenance visits, all break down calls shall be measured seperately. (c) The quoted rate is deemed to be inclusive of repair/ replacement of defective Power supply board, Master control board, Light head board, wall control interface board, minor parts such as nuts, bolts, grease etc. (d) The spare parts such as LED module, Light head intensity keypad, Main suspension break screw, Spring arm break screw, dome break screw, spring arm cover, rear cover, wall control membrane switch, and light head cover shall be measured and piad seperately under relevant items. (e) In addition to the above the contractor shall deploy rep of OEM to rectify any type of defects arised during the contract period, to keep the OT lights in operational condition.

(a) OT 1 Lights

(b) OT 2 Lights

(c) OT 3 Lights

(d) Minor OT Lights

Supply only the following spares for carrying out repairs to OT surgical lights :-

(a) LED Module

(b) Light head instensity keypad

(c) Main suspension break screw

(d) Spring arm break screw

(e) Dome break screw

(f) Spring arm cover

(g) Rear cover

(h) Light head cover

(j) Wall control membrane switch

M&L for disconnecting carefully electrical connection from both LT (primary & secondary) sides of the voltage stabilizer, keeping them at safe side and taking out the Voltage stabiliser of capacity 250 to 150 KVA of any make for carrying out complete overhauling which shall comprise of the following:- a) M&L for lifting, transporting, handling, the voltage stabilizer to workshop and opening top cover of the voltage stabilizer by unscrewing nuts, bolts, washers etc. including disconnecting core assembly from LT bushing and lifting the same gently and taking out from the shell (container/ body) of the voltage stabilizer. b) M&L for draining out oil from the above said voltage stabilizer in the suitable capacity of container /drums and keeping it in safe custody for reuse. c) M&L for cleaning the voltage stabilizer body from inside, removing deposited dirt/ sludge/ foreign particles etc. from the bottom/ body of the transformer and drying up the shell from inside before refilling of the transformer oil. d) M&L for cleaning and washing thoroughly core and windings of the voltage stabilizer by hosting down with clean dry oil( without moisture) conforming to IS 335/1983, removing deposited dirt/sludge/foreign particles from the windings/ core, thorough inspection of windings, providing insulations to leads and terminals, heating/ drying/ baking complete carefully and thoroughly inside the heating chamber at suitable temperature to obtain required value of insulation resistance etc. all as directed by Engr-in- charge. e) Lifting and refixing core assembly inside the voltage stabilizer shell gently and carefully, connecting primary/ secondary/ Neutral connections to the bushings assembly including tightening of nuts, bolts, washers of the core to reduce humming noise all as directed. f) Refilling the filtered transformer oil in the shell of voltage stabilizer complete. g) Refixing the top cover including replacement of cork sheet/ gasket 8mm thick, tightening of nuts/ bolts/ washers etc.complete all as directed by Engr-in charge . h) Lifting/ shifting to the place from where removed or to any location as directed and re-installing the voltage stabilizer including connecting primary/ secondary/ neutral and earthing connections etc. all as directed by Engr-in-Charge.

j) The inspection of voltage stabilizer shall involve:- i) Checking of all clamps, nuts, bolts including core bolts & cover fixing bolts. Ii) Checking all brazings, joints, tap heads and connection joints. iii) Checking all jumpers, terminations/ connections inside the voltage stabilizer. iv) Inspection of tap changer and servo motor for smooth operation, checking the moving and fixed contacts for contact wear and connection to winding. k) Conducting the tests on core and windings as per IS like ratio, magnetic imbalance, short circuit etc. in presence of Engr-in-Charge and test results shall be signed both by the contractor and Engineer -in-Charge and kept on record. Note:- (i) Any damage to insulators/ bushes/ windings etc. while in the custody of the contractor shall be made good at no extra cost to Department. The serviceability of the voltage stabilizer shall be checked and confirmed by the contractor before taking into his custody. (ii) M&L for rewinding/ re-insulation of LT (primary/ secondary) coils, new transformer oil and dehydration of transformer oil shall be measured and paid separately.

All as per Item No. 10 herein before but voltage stabiliser of capacity 75 KVA to 25 KVA complete all as specified and as directed by Engineer-in-Charge.

M & L for Filtration of transformer oil of servo controlled voltage stabilisers installed at various locations to achieve di-electric strength not less than 60 KV at 2.5mm gap as per relevant IS with portable filtration plant, testing of the oil for the di-electric strength before filtration and after filtration and submit the same signed by both contractor and Engineer in Charge and kept on record complete all as specified and as directed by Engineer-in-Charge.

Supply and topping up of transformer oil with di-electric strength not less than 60 KV in to the conservator tank/ body tank of the transformer/ PSS/ Voltage Stabilizers etc at various locations complete all as specified and as directed by Engineer-in-Charge. [Make: Poweroil/ Transol/ Sabitha Chemicals]

M&L for rewinding of servo controlled voltage stabilizers of capacity ( 25 KVA to 250 KVA) by winding the defective coils with new copper wire as per I.S. of same gauge and existing size together with new insulated materials/ bracings before placing in to the transformer and assembling the coil with new insulation and fitting the coils in the chamber, testing and commissioning the transformer and recording the test results complete all as specified and as directed by Engineer-in-Charge. [Note: M&L for re-insulation of serviceable coils will be measured & paid separately under relevant items.]

M&L for re-insulating windings of servo controlled voltage stabilizers of capacity ( 25 KVA to 250 KVA) by strip opening of coils (i.e. Primary/ secondary coils) from core assembly safely, unwinding the coils (i.e. Primary/ secondary coils) complete, removing the old defective insulation paper and replacing with new DPC insulation to the copper conductor, re-varnishing of the windings with super varnish including heating/ drying/ backing complete carefully and thoroughly inside the heating chamber at suitable temperature to obtain required value of insulation resistance etc. all as per IS 1986-87 complete all as specified and as directed by Engineer-in-Charge.

M&L for preparation of old painted surfaces of voltage stabilizers with coarse cloth/ brush and painting throughout externally on exposed surfaces with two coats of smoke grey colour synthetic enamel paint or as approved colour complete all as specified and as directed by Engineer-in-Charge. for the following capacity:-

(a) 250 to 150 KVA

(b) 75 to 50 KVA

Supply & fix as in repair, testing and commissioning of single phase, 240 volts AC servo motor with rated torque not less than 10 Kg/cm, suitable for operation of 75-250 KVA servo voltage stabilizers complete all as specified and as directed by Engineer-in-Charge.

Supply & fix as in repair, testing and commissioning of single phase, 240 volts AC servo motor with rated torque not less than 3 Kg/cm, suitable for operation of 25-50 KVA servo voltage stabilizers complete all as specified and as directed by Engineer-in-Charge.

M & L for carrying out repairs to PCC earth pits by plastering to make the good defective/ damaged surfaces including preparation of surfaces and applying a coat of white wash including clearing vegetation/ levelling the soil upto 0.50m distance around the earth pit complete all as specified and as directed by Engineer-in-Charge.

M & L as in repair PCC (1:3:6), type C1 earth pit chamber of outer size 450X450 X300 mm and inner Size 350X350X 300 mm including necessary earth work complete all as specified and as directed by Engineer-in-Charge.

M & L as in repair RCC 1:2:4, type B1 earth pit cover of required size 450 x 450 x 100 mm with 6 Nos. 8 mm dia high strength deformed steel TMT bars on both ways (horizontal & vertical) including with handle arrangement and necessary earth work complete all as specified and as directed by Engineer-in-Charge.

M&L for earthing complete with Galvanized steel earth plate electrode 600 x 600 x 6 mm thick buried directly in ground (earth pit not less than 2.25 m deep below GL) with top edge of earth plate not less than 1.5 m below normal ground level, earth plate surrounded from all sides by 15cm thick and packed layer of charcoal dust and common salt filling in alternate layers and electrode connections by using Galvanized earth strip 25x3 mm size connected by means of bolts, nuts, check nuts and washer of galvanized iron or steel, provision of 32 mm dia GI pipe light grade for protection of GI earth strip and 20mm dia GI pipe light grade for watering arrangement and PCC (1:3:6), type C1 chamber. MS funnel, wire mesh, 100 mm thick RCC 1:2:4, type B1 earth pit cover with 6 Nos. 8 mm dia high strength deformed steel TMT bars on both ways including necessary excavation in any type of soil, returning, filling in, removal of surplus soil to distance n exc 50 m, provision of charcoal and salt complete all as shown in electrical plate No 3 of schedule Part-I incl dismantling of old unsv earthing complete all as specified and as directed by Engineer-in-Charge. Note: (i) Cost of GI earth strip and GI protection pipe upto 7.5m length shall be deemed to be included in the rate quoted for this item. (ii) The unit rate shall also includes for Wire mesh, funnel, excavation, returning & filling, PCC chamber pit, RCC cover & test point.(iii) All accessories required for galvanized steel plate electrode required, as specified and as directed.(iv) If the desired earth resistance is not achieved during testing as per IS , the complete earthing shall be replaced / repaired by the contractor at his own cost and no extra claim shall be admissible.

M&L for earthing complete with Galvanized steel earth plate electrode 600 x 600 x 6 mm thick buried directly in ground (earth pit not less than 2.25 m deep below GL) with top edge of earth plate not less than 1.5 m below normal ground level, earth plate surrounded from all sides by 15cm thick and packed layer of charcoal dust and common salt filling in alternate layers and electrode connections by using Galvanized earth strip 32x6 mm size connected by means of bolts, nuts, check nuts and washer of galvanized iron or steel, provision of 40 mm dia GI pipe light grade for protection of GI earth strip and 20mm dia GI pipe light grade for watering arrangement and PCC (1:3:6) , type C1 chamber. MS funnel, wire gauge. 50 mm thick RCC 1:2:4, type B1 earth pit cover with 6 Nos. 8 mm dia high strength deformed steel TMT bars on both ways including necessary excavation in any type of soil, returning, filling in, removal of surplus soil to distance n exc 50 m, provision of charcoal and salt complete all as shown in electrical plate No 3 of schedule Part-I incl dismantling of old unsv earthig complete all as specified and as directed by Engineer-in-Charge. Note: (i) Cost of GI earth strip and GI protection pipe upto 7.5m length shall be deemed to be included in the rate quoted for this item. (ii) The unit rate shall also includes for Wire mesh, funnel, excavation, returning & filling, PCC chamber pit, RCC cover & test point.(iii) All accessories required for galvanized steel plate electrode required, as specified and as directed.(iv) If the desired earth resistance is not achieved during testing as per IS , the complete earthing shall be replaced / repaired by the contractor at his own cost and no extra claim shall be admissible.

M&L for earthing complete with copper earth plate electrode 600 x 600 x 3 mm thick buried directly in ground (earth pit not less than 2.25 m deep below GL) with top edge of earth plate not less than 1.5 m below normal ground level, earth plate surrounded from all sides by 15cm thick and packed layer of charcoal dust and common salt filling in alternate layers and electrode connections by using copper earth strip 20x3 mm size connected by means of bolts, nuts, check nuts and washer of galvanized iron or steel, provision of 32 mm dia GI pipe light grade for protection of copper earth strip and 20mm dia GI pipe light grade for watering arrangement and PCC (1:3:6), type C1 chamber. MS funnel, wire gauge. 50 mm thick RCC 1:2:4, type B1 earth pit cover with 6 Nos. 8 mm dia high strength deformed steel TMT bars on both ways including necessary excavation in any type of soil, returning, filling in, removal of surplus soil to distance n exc 50 m, provision of charcoal and salt complete all as shown in electrical plate No 3 of schedule Part-I incl dismantling of old unserviceable earthing complete all as specified and as directed by Engineer-in-Charge. Note: (i) Cost of copper earth strip and GI protection pipe upto 7.5m length shall be deemed to be included in the rate quoted for this item. (ii) The unit rate shall also includes for Wire mesh, funnel, excavation, returning & filling, PCC chamber pit, RCC cover & test point.(iii) All accessories required for galvanized steel plate electrode required, as specified and as directed.(iv) If the desired earth resistance is not achieved during testing as per IS , the complete earthing shall be replaced / repaired by the contractor at his own cost and no extra claim shall be admissible. (v) Earth test report shall be submitted to Accepting Officer for the payment of RAR / FB

Taking down of unserviceable Copper earthing strip any size complete all as specified and as directed by Engineer-in-Charge.

Supply and fixing 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 above 4 to 16 m above ground level on wall or any other indicated situation for loop earthing etc. as required for 20 mm x 3 mm thick, copper strip using porcelain clit/post insulators, complete all as specified and as directed by Engineer-in-Charge. Note: The rate for necessary scaffolding work shall be deemed to be included in the quoted rate.

Supply and fixing 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 above ground level to below 4 m on wall or any other indicated situation for loop earthing etc. as required for 20 mm x 3 mm thick, copper strip using porcelain clit/post insulators,complete all as specified and as directed by Engineer-in-Charge.

Taking down of unserviceable GI earthing strip any size complete all as specified and as directed by Engineer-in-Charge.

Supply and fixing GI 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 for 32 mm x 6 mm thick, Galvanised using porcelain clit/post insulators, complete all as specified and as directed by Engineer-in-Charge.

Supply and fixing GI 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 for 25 mm x 3 mm thick, Galvanised using porcelain clit/post insulators, complete all as specified and as directed by Engineer-in-Charge.

Taking down of unserviceable Aluminium earthing strip any size complete all as directed by Engineer in Charge.

Supply and fixing aluminium earth continuity conductor or main earthing lead fixed to wall from ground level to upto 4th floor/ recess / chases/ roof top for lightning arrester / buried in ground or drawn in conduit / pipe or fixed to poles or any other indicated situation for loop earthing etc. as required for 25 mm x 3 mm thick, aluminium using porcelain clit/post insulators with screw/ GI drill bit screw,complete all as specified and as directed by Engineer-in-Charge. Note: The rate for necessary scaffolding work shall be deemed to be included in the quoted rate.

M & L for re-fixing of aluminium earth continuity conductor fixed to wall from ground level to upto 4th floor/ roof top of the fourth floor / Chiminy of incinirator for lightning arrester/ fixed to poles/ buried in ground or drawn in conduit or any other indicated situation for loop earthing etc. as required for 20 mm x 3 mm thick/ 25 mm x 3 mm thick, aluminium strip using porcelain clit/post insulators with screw/ self dril GI screw with rubber washer ,complete all as specified and as directed by Engineer-in-Charge. Note: insulators shall be measured and paid seperately under relevant item.

Taking out old GI tubing of any grade and size in trenches/floor/fixed to pole for earth protection complete all as specified and as directed by Engineer-in-Charge.

Supply and fixing GI tubing, 40 mm dia bore, light grade ISI marked with all fittings complete all as specified and as directed by Engineer-in-Charge.

Supply and fixing test point terminal block made of gun metal or phosphorous bronze, size 75mm x 75mm x 25 mm thick, drilled and screwed including 3 Nos. 8 mm dia. 25 mm long hexagonal head screws, including MS box 2 mm thick of suitable size for protection of test point terminal, including dismantling of old unserviceable test point complete all as specified and as directed by Engineer-in-Charge.

Supply and fixing as in repair air termination, single pointed, aluminium rod 12 mm dia and 300mm long fixed on earth strip for earth conductivity to ground complete all as specified and as directed by Engineer-in-Charge.

M & L for GI tubing, 20 mm dia bore, Light grade with all fittings complete all as specified and as directed by Engineer-in-Charge.

M & L for GI tubing, 40 mm dia bore, medium grade with all fittings fixing on top of the building for fixing of Air termination rod complete all as specified and as directed by Engineer-in-Charge.

Dismantling/ strip opening of earth strip of any type and M&L for testing of earth pits for earth resistance value with fully functional earth meggar, submitting the earth test report to Engineer in Charge and taking necessary action as directed for improving the earth value by pouring salt/ charcoal/ earth enhancing compound/ change of earth plate as required for obtaining earth value with in limits as per IS standard complete all as specified and as directed by Engineer-in-Charge. Note : Salt, charcoal, earth enhancing compound, earth plates and excavation earth work shall be measured and paid separately under relevant item.

Supply and pouring crystalline salt complete all as specified and as directed by Engineer-in-Charge.

Supply and pouring charcoal/ carbon breeze complete all as specified and as directed by Engineer-in-Charge. (25 Kg each bag)

Supply & lay earth enhancement compound complete all as specified and as directed by Engineer-in-Charge. (25 Kg each bag)

Supply and laying as in repair Galvanised steel earth plate, size of 60 cm x 60 cm x 6.00 mm complete all as specified and as directed by Engineer-in-Charge.

Supply and laying as in repair copper plate, size of 60 cm x 60 cm x 3.00 mm complete all as specified and as directed by Engineer-in-Charge.

M & L for excavation of earth for earth plate of size 600 mm x 600 mm and deep 2.25 Metre taking out of soil and retuning refilling after filling of earth plate and required charcoal and salt and removing surpluse soil at 50m complete all as specified and as directed by Engineer-in-Charge. Note: Earth plate, charcoal and salt shall be measured and paid seperately.

S&F in replacement of Post insulator for earthing strip above fourth floor roof top/ ground floor to top floor (upto 15m) wall including taking down of old one complete all as specified and as directed by Engineer-in-Charge.

S&F as in repair GI Funnel with wire mesh for watering to earth pit complete all as specified and as directed by Engineer-in-Charge.

M/s K Moorthi (BID ID -3024735)

DELTA ELECTRICALS (BID ID -3023987)