REPAIR/REPLACEMENT OF LIGHTENING CONDUCTOR, NORMAL EARTHING AND CHEMICAL EARTHING, BUILDING SECURITY LIGHTS, AVIATION LIGHTS AND REPLACEMENT OF LT PANEL, RUBBER INSULATION MATS AND OTHER CONNECTED E/M WORKS UNDER GE (NB) VISAKHAPATNAM

Amount

M & L Earthing complete with GI earth plate electrode 600 mm x 600mm x 6 mm thick burried directly in ground vertically to a depth not less than 2.25 m below ground level with the top edge of earth plate at depth not less than 1.5 m below ground level connected with galvanised earth strip of size 25x4mm by means of bolts, nuts, check nuts and washers protected by 40mm bore light grade GI pipe, funnel with 20mm bore GI medium grade pipe for watering, wire mesh, including concrete pit in PCC (1:3:6) type C-1, with 40 mm thick Pre-cast R.C.C. (1:2:4) type B-I cover slab (reinforced with 8 mm dia deformed bar @ 10 cm C/C both ways and suitable handle of 12 mm dia round bar), including providing charcoal or coke and common salt in alternate layers of 15 cm compacted thickness all around the earth electrode, with funnel, wire mesh, aluminium lugs, complete in all respect and other end connected with main switch board or Earthing test point as directed, including necessary earth work and disposal of soil to a distance not exceeding 50 metre and necessary testing on completion inclduing taking down old one complete all as specified and as directed by the Engineer-in-Charge.

M & L Earthing complete with GI earth plate electrode 600 mm x 600mm x 6 mm thick burried directly in ground vertically to a depth not less than 2.25 m below ground level with the top edge of earth plate at depth not less than 1.5 m below ground level connected with galvanised earth strip of size 32x6mm by means of bolts, nuts, check nuts and washers protected by 40mm bore light grade GI pipe, funnel with 20mm bore GI medium grade pipe for watering, wire mesh, including concrete pit in PCC (1:3:6) type C-1, with 40 mm thick Pre-cast R.C.C. (1:2:4) type B-I cover slab (reinforced with 8 mm dia deformed bar @ 10 cm C/C both ways and suitable handle of 12 mm dia round bar), including providing charcoal or coke and common salt in alternate layers of 15 cm compacted thickness all around the earth electrode, with funnel, wire mesh, aluminium lugs, complete in all respect and other end connected with main switch board or Earthing test point as directed, including necessary earth work and disposal of soil to a distance not exceeding 50 metre and necessary testing on completion inclduing taking down old one complete all as specified and as directed by the Engineer-in-Charge.

M & L Earthing complete with copper earth plate electrode 600 mm x 600mm x 3.15 mm thick burried directly in ground vertically to a depth not less than 2.25 m below ground level with the top edge of earth plate at depth not less than 1.5 m below ground level connected with copper earth strip of size 20x3mm by means of bolts, nuts, check nuts and washers protected by 40mm bore light grade GI pipe, funnel with 20mm bore GI medium grade pipe for watering, wire mesh, including concrete pit in PCC (1:3:6) type C-1, with 40 mm thick Pre-cast R.C.C. (1:2:4) type B-I cover slab (reinforced with 8 mm dia deformed bar @ 10 cm C/C both ways and suitable handle of 12 mm dia round bar), including providing charcoal or coke and common salt in alternate layers of 15 cm compacted thickness all around the earth electrode, with funnel, wire mesh, aluminium lugs, complete in all respect and other end connected with main switch board or Earthing test point as directed, including necessary earth work and disposal of soil to a distance not exceeding 50 metre and necessary testing on completion inclduing taking down old one complete all as specified and as directed by the Engineer-in-Charge.

S & F in repairs earth continuity conductor or main earthing lead with galvenised iron strip of size 25x4 mm, fixed to wall on batten or recesses or chases or burried in ground or drawn in conduit/pipe or fixed to poles or any other indicated situation for loop earthing etc, as required complete all specification and directed.

S & F in repairs earth continuity conductor or main earthing lead with aluminium strip of size 25x3mm mm, fixed to wall on batten or recesses or chases or burried in ground or drawn in conduit/pipe or fixed to poles or any other indicated situation for loop earthing etc, as required complete all specification and directed. (Note: Quoted rate deemed to be included shaddles or procelain blocks of 10mm thick spread at 1m distance etc including making grooves and fixing with brass screws etc)

S & F in repairs earth continuity conductor or main earthing lead with copper strip of size 20x3mm mm, fixed to wall on batten or recesses or chases or burried in ground or drawn in conduit/pipe or fixed to poles or any other indicated situation for loop earthing etc, as required complete all specification and directed. (Note: Quoted rate deemed to be included shaddles or procelain blocks of 10mm thick spread at 1m distance etc including making grooves and fixing with brass screws etc)

S & F in repairs earth continuity conductor or main earthing lead with galvanised iron strip of size 32 x 6 mm, fixed to wall on batten or recesses or chases or burried in ground or drawn in conduit/pipe or fixed to poles or any other indicated situation for loop earthing etc, as required complete all specification and directed. (Note: Quoted rate deemed to be included shaddles or procelain blocks of 10mm thick spread at 1m distance etc including making grooves and fixing with brass screws etc)

M & L for Earth chamber of size 700x700mm (External size) with PCC 1:3:6, Type C-1 (using 20mm graded stone aggegrates) including necessary earth work in any type of soil all as shown in Electrical Plate No. 03 of MES Schedule Part I complete inclduing dismantling of existing broken earth chamber as specified and as directed.

M & L for replacement of broken earth chamber cover of pre-cast RCC 1:2:4 type B-1 (using 20mm graded stone aggergates) of size 550x550x40mm thick reinforced with 8mm dia TMT steel bars @10cm centre to centre in both direction and 12mm dia MS handle of suitable size all as shown in Electrical Plate No. 03 of MES Schedule Part I complete as specified and as directed.

S & F in repair GI Funnel with wire mesh on existing 40mm dia pipe complete all as specified and as directed.

S & F in repair GI Funnel with wire mesh on existing 20mm dia pipe complete all as specified and as directed.

S & F in repairs, 40 mm bore, steel tubes, galvanised, light grade with all fittings and fixed complete to walls and ceilings or laid in floors as in protection pipe complete all as specified and directed.

S & F in repairs, 20 mm bore, steel tubes, galvanised, light grade with all fittings and fixed complete to walls and ceilings or laid in floors as in protection pipe complete all as specified and directed.

S & F in repair Test point terminal block made of gun metal or phosphorus bronze size 75x75x25mm drilled and screwed including 3 nos. 8mm dia 25mm long hex. head screw complete all as specified and directed.

M & L for Maintenance of existing earthing system by cleaning the earth chamber funnel and adding adequate water with 10Kg salt complete all as specified and as directed.

S & F in repair Air termination, single pointed aluminium rod 12mm dia and 300mm long fixed to overhead reservoir as in lightening protection with necessary connections to earthing etc complete all as specified and directed.

Supply and fix in replacement high voltage synthetic insulating mat recommended for safety of worker on up to 3.3 KV, black or blue colour Class A of size 2m x 1m x 2 mm complete all as specified and directed (Make : ASIN/JYOTI/GENERIC or its equivalent as approved).

S & F in repairs building security light, LED, 2500 Lumens, high pressure die cast aluminium housing, IP-66 protection with lamp and all accessories including mounting clamps, bolts, nuts and washers, 1.5 Sqmm weather proof twin core twisted FRLS grade copper conductor cable to fittings of suitable length complete all as specified and as directed. (Make: Havell's Cat No. ENDURASUNDOWNSL25WLED765PASYBOTGIHD or equivelant of make as per list of manufacturer)

S & F in repairs avaiation obstruction light, 30 Watt, LED type integral light comprising of aluminium housing with polycarbonate enclosure with LED lamp and all accessories and connection complete all as specified and as directed. (Make: Bajaj Product Code No.110731, luminaire type BGAV 302LED and or equivelant of make as per list of manufacturer)

Material and Labour for preparation of old metal surfaces of Panel Boards after complete removal of existing painting over 10cm width or girth not otherwise described and applying two coats of enamel paint (1st quality) of simens grey colour over a coat red oxide zinc chrome primer and marking the Qtr No, Panel Board No in front side complete all as specified and directed by engineer in Charge. (Note: Adjoing areas there to properly covered befor painting. Adjoing areas, floor, walls are to cleaned free of paint spillage after painting work. If Paint spill is not cleaned to match with exsting surface a panel recovery @ Rs.200/- per location will be made from payments due to the contractor).

Supply & Installation of advance conductive compound based chemical compound technology with upgraded high tensile low carbon steel rod as per UL 467 and as per BS 7430 with copper coating 250 microns. Earthing system confirming to IS:3034. The ROD should 17.2 mm & 3 meter length with rod to tape clamp, CR 125 (type A) additional protection of the terminal. Chemical compound should be the highly Conductive Compound as per BSEN 50164-7 with 25 kg each bag & resistivity should be 0.05 ohm. The job includes digging the pit and refilling the same by furse CEM back Fill Compound (Ground Enhancer), the BFC should be mixed with cement in 3:1 for forming conductive concrete and it should be eco friendly, not contain environmentally hazardous material/metal. The earth pit should be provided with a light weight inspection pit cover PT-205 for protection and safe guard of terminals. In areas where soil condition is bad Good earth is to be arranged to fill the excavated pits by mixing furse CEM- a convenient and permanent solution by adding with 3:1 ratio chemical compound with the earth electrode in the main component of the earthing system which is in direct contact with the ground and thus provides a mean of releasing or collecting earth leakage currents. The material should have good electrical conductivity and anti corrosion property in wide range of soil conditions complete all as specified & directed . (Make : ABB Furse CEM as per RB 336 or equivalent approved make). (NOTE :-Each earth pit should contain:- a) 1 No. copper bonded high tensile low carbon steel,17.2 mm dia, 3 meter length. b) Rod to tape clamp (type A). c) 25 kg chemical compound as per BSEN 50164-7. d) Light weight inspection pit cover with 5000 kg weight load capacity. e) Supply and installation shall be done by the authorised technician of the manufacturer)

S & F in repair single core 1.5 Sqmm size cable (nominal area) PVC insulated unsheathed, multistranded FRLS copper conductor cable, 1100 Volts [ISI marked ] as in panel board complete all as specified and as directed.

S & F in repair single core 2.5 Sqmm size cable (nominal area) PVC insulated unsheathed, multistranded FRLS copper conductor cable, 1100 Volts [ISI marked ] as in Panel board complete all as specified and as directed.

S & F in repair single core 4.0 Sqmm size cable (nominal area) PVC insulated unsheathed, multistranded FRLS copper conductor cable, 1100 Volts [ISI marked ] as in panel board complete all as specified and as directed.

S & F in repair single core 6.0 Sqmm size cable (nominal area) PVC insulated unsheathed, multistranded FRLS copper conductor cable, 1100 Volts [ISI marked ] as in panel board complete all as specified and as directed.

M & L for Checking and measuring earth pit resistance value by using 3 pole method at earth pit of buildings complete all as directed by the Engr-in-Charge. (Note: (i) T & P required for testing shall be arranged by the contractor without any extra cost to the Govt. (ii) The measurement are required to be taken as and when directed by the Engr-in-Charge during the contract period (iii) The contractor shall provide minimum one electrician and one helper daily during working hours for this purpose during contract period (iv) All reading are to be recorded in earth register measurement books which are to be maintained properly duly signed by the Engr-in-Charge)

M & L for cleaning Indoor electrical panel of maximum size 3.0x2.0m and cleaning of panel room of maximum size 7.0x6.0m completely by removing all debris from the cable pits and room, removing cob webs inside the panel and in panel room, vaccuming the electrical panel with suitable vaccum cleaner and cloth to remove all dust/dirt etc complete all as directed by the Engr-in-Charge. (Note: Quoted rate deemed to be inclussive of necessary T & P as required)

S & F in repair Type A Earth termination clamp for terminating flat conductors to earth rods with clamps and screw made of high strength copper alloy complete all as specified and directed. (Make: ABB Furse CR130 or equivalent approved make)

M & L for Repairs to Panel board indoor type sheet metal approximate size (5 x1.5 x 1.5 Feet's) parts tinkering the parts and replacing fully corroded sheet metal parts like base plate, top plate, front cover etc with appropriate gauges MS sheet including bending to match with the existing size, welding brazing and assembling including replacing all nuts & bolts in MCBs and proper legging in cable and control wire sheet metal screws metal screws and painting the complete body with two coat of synthetic enamel paint over a coat of Zinc chrome primer and marking the Qtr No, Panel Board No in front side and all as specified and as directed

S & F in repairs 4mm dia galvanised iron or steel wire 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 complete all specified and directed.

VARADHI ENTERPRISES

LALITHA SAI INFRA

VIJAYA ENTERPRISES

SHIRIDI SAI BUILDERS

JAHNAVI ASSOCIATES

M/s VENKATA JAHNAVI CONSTRUCTIONS

ANAND ENTERPRISES AND ENGINEERS