Bharat Sanchar Nigam Limited-BSNL has published Tender For Providing New Earth Improvement Of Earth Value Providing Aviation Light Attending Aviation Lighting Providing Correcting Ligtning Conductor System For Bts Sites For Phase Ix.2 Under Udumalpet Sdca Elect Phase 1. Submission Date for this Tender is 15-11-2023. Conductor Tenders in coimbatore Tamil Nadu. Bidders can get complete Tender details and download the document.
Sl. No. | Item Description |
1 | Reconditioning of existingEarth |
2 | Minor Reconditioning of Earthing system after survey and making good loose joints, conneting disjointed joints,Providing nuts bolts, springwashers, washers, and a strip up to 500 mm length,making good the watering pipe , watering etc,testing earth resistance for any improvement etc., as required. ( Note: After the said reconditioning , if Earth value not improved addl earthing is to be provided through item no 2.01or 3.01 or 4.01and paid as per that items separately for addl earthing . The Engineer incharge decision for such a cases is final) |
3 | Major reconditioningwith Correction of equipment earth values to bring it within norms ( 0.5 ohms to 1 ohms) excavation of pit for 1.25mx1.25mx 1.5 mtr depth making good the connectivity between plate and strip , Replacement of rusted bolts, nuts, spring washers, pouring the earth enhancement matrials(approx 12.5 Kg )diluted with water and watering for 3 days back filling , observing the earth value and testing the earh value iand submission of reports etc., as reqd.( Note: After the said reconditioning , if Earth value not improvedthe work to be continued as item 2.01 and only 50% of awarded rate shall be paid. Th Engineer incharge decision for such a cases is final) |
4 | Earthing type I ( where more space available) |
5 | Earthingfor Equipment earthing /lightningconductor with 4 Nos hot Dip GI plates of size 600 mm x600 mm x6 mm each inter connected with each other with GI strip as per the specifications /drawing of Muliple plate earthing attached including Excavation & Refilling by Ramming layer by layer for compactness & cohesiveness of Earthing pit of Size 2Mtr X2Mtr x3Mtr. depth & removal ofexcess earth material after completion of work from the site,Supply of Charcoal, Coal of Medium Size ( 200 Kg) ,Salt 20 Kg & Refilling by Ramming layerby layer , supply of with Nuts, Bolts, washers, 25 mm watering pipe,funnel , masonay enclosure with cover plate etc., as required.(interconnecting GI strip shall be measured in item 2.02 Below) |
6 | Providing and fixing 50 mmx3 mm G.I. stripon surface or in recess for connections up to earth busbar etc as reqd |
7 | Providing and fixing earth bus made of 50mmx6mm GI Busbar having a length of 450mm on surface of wall supported by suitable bakeliteinsualtors and clamping, drilling of necessary holes , bolts screws etc., complete as reqd. |
8 | Supplying and laying of 75 mm dia "B" class GI pipe including necessary bend on the existing surface of wall with neat clamping / in the ground with necessary excavation and refilling work etc as reqd. (M/s ISI) |
9 | Providing masonary enclosure for existing earth pit with Cast Iron/M.S.hinged/RCC cover plate , i/c sign writing on the earth pit etc as required. (size of masonary enclosure 300mmx 300mm approximate). |
10 | Earthing type II ( where nominal Space is available) |
11 | Earthingfor Equipment earthing /lightningconductorwith GI plate 600mm x 600 mm x 6mm thick including accessories and providing masonry enclosure with cover plate having locking arrangement and watering pipe of 2.7 mtr long without charcoal/ cock and salt )etc. as reqd. |
12 | Providing and fixing 25mmx5mm G.I. stripon surface or in recess for connections up to earth busbaretc as reqd |
13 | Supplying and filling of low resistance , non corrosive earth conductivityenhancement compoundtransportation to site, mixing the compound with water and filling the earth with the compound as per site requirement. (M/s LPI RESLO 10 or M/s. Earth plus High grade Compound or similar supr.make make )(1 bag means Min. 20 Kg) |
14 | Supplying and laying of 40 mm dia "B" class GI pipe including necessary bend on the existing surface of wall with neat clamping / in the ground with necessary excavation and refilling work etc as reqd. (M/s ISI) |
15 | Cutting theexisting Cement Concrete flooring for required depth depth for laying of earth strip/cable /providing earthing including refilling the trench after completion of work with cement flooring with neat finishing as required |
16 | S/L of 1x10sq.mm copper wire with lug for both endfor loop earthing as required |
17 | Providing and fixing earth bus made of 25mmx5mm GI strip having a length of 300mm on surface of wall supported by suitable bus bar insualtors and clamping, drilling of necessary holes etc., complete as reqd. |
18 | EarthingType III (Where Spce is constraint) |
19 | RDSO approved Chemical earthingfor Equipment earthing /lightningconductor withearth electrodemade of high tensile low carbon steel circular rods, molecularly bonded with copper on outer surface to meet the requirements of Underwriters Laboratories (UL) 467-2007 or latest or IEC 62561 having high tensile strength of not less than 50kg /m2 , high corrosion resistant strength,by diggingand filling Earth enhancement compound together with back fill soil as per specification i/c providing masonay enclosure with cover plate etc. .(M/s CAFE or any RDSO approved Make) |
20 | Lightning conductor |
21 | Supplying of lightning conductor made of 25mm dia 900 mm long,copper hollow tube of minimum wall thickness of 1.6mm, multy prong and fixing on top of existing tower i/c pvdg necessary Teflon sleeve/suitlable insulation to avoid direct contact with the body of the tower etc. as reqd |
22 | Providing and fixing 25mmx5mm G.I. stripon surface or in recess as a lightnin conductor for connections up to earth busbaretc as reqd |
23 | Supplying and fixing of 25mm epoxy type insulators for laying of earth strip o building wall including drilling holes to wall fixing etc as required. |
24 | Supplying and laying of 40 mm dia "B" class GI pipe including necessary bend on the existing surface of wall with neat clamping / in the ground with necessary excavation and refilling work etc as reqd. (M/s ISI) |
25 | Providing and fixing testing joint, made of 20mm x3mm thick, GI strip, 150mm long, with 4 nos. of GI bolts, nuts, check nuts and spring washers, 2Nos,25mm porcelain insulators etc. complete as reqd. |
26 | S/L of GIstrip of 50x3mm on surface of tower with 2 nos insulator with clampetc as required |
27 | Aviation Light |
28 | SITC of LED based Aviation obstruction lamp Red coloured light with inbuilt automatic daylight/nightredundant sensor twilight switch designed inaccordance with ICAO specification for Type B Aviation light, IP 66 Protection suitable for operation on 90-260V 1Ph AC supply ./ 25-50 Volts DCsupply as per requirement including fixing on the top of tower of not more than 100 mtr height with the suitable arrangement , making holes, nut & bolts etc., as reqd.( the input voltage requirement AC/DC as per the site requirement)(M/s Ray dyamics make model ,LIT32-XWB model or Smlr. supr. Make) |
29 | Supplying and Laying of 2 x 1.5 sq. mm Copper conductor armouredUGcable with ISI markOn thetower / Wall / shelter surface etc., including clamping and connecting the cable at boththe ends etc as reqd. |
30 | Prdg and fixing of SMC weather proof box with locking arrangement i/c supplying and fixing din channel arrangement with 1 No. 6A SP MCB & neutral link in thebox I/c interconnections, ect as reqd. |
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