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Repair / Maintenance Of Conventional / Chemical Earthing For Equipment And Lightening Protection At Technical Area Under Ge ( Af ) Jamnagar No 1, jamnagar-Gujarat

Military Engineer Services-MES has published Repair / Maintenance Of Conventional / Chemical Earthing For Equipment And Lightening Protection At Technical Area Under Ge ( Af ) Jamnagar No 1. Submission Date for this Tender is 19-10-2022. Electrification Work Tenders in jamnagar Gujarat. Bidders can get complete Tender details and download the document.




Tender Notice

34145080
Repair / Maintenance Of Conventional / Chemical Earthing For Equipment And Lightening Protection At Technical Area Under Ge ( Af ) Jamnagar No 1
Open Tender
Indian
Gujarat
jamnagar
19-10-2022

Tender Details

Repair / Maintenance Of Conventional / Chemical Earthing For Equipment And Lightening Protection At Technical Area Under Ge ( Af ) Jamnagar No 1

Key Value

Document Fees
INR 500 /-
EMD
INR 70000.0 /-
Tender Value
INR 35 Lakhs /-

BOQ Items

Name of Work: REPAIR/MAINTENANCE OF CONVENTIONAL/CHEMICAL EARTHING FOR EQUIPMENT AND LIGHTENING PROTECTION AT TECHNICAL AREA UNDER GE (AF) JAMNAGAR NO 1
Sl. No. Item Description
1M & L for fixing in repairs Air termination, single pointed, copper rod 12mm dia and 300mm long all.
2M & L for fixing in repairs Air termination, single pointed aluminium rod 12mm dia and 300mm long.
3S&F in repairs Air termination, with 5 spikes Star pointed copper rod 15 mm dia ,1500 mm long and 100 micron copper bonded lightening conductorwith base, fixed in position on pole with clamp,nuts and bolts including connection with existing earthing complete all as specifed and directed.
4Supply and fixin repairs 25 mm size epoxy type insulator suitable for fixing earthing strip including screw etc all as specifed and directed.
5M & L for fixing in repairs Copper strip 20 x 3.15mm with saddles and fixing screws etc. for roof conductors and down conductors above ground.all as specifed and directed.
6M & L for fixing in repairs Copper strip 32 x 6mm buried in ground all as specifed and directed.
7M & L for fixing in repairsAluminium strip 25 x 3.15mm with saddles and fixing screws etc. for roof conductors and down conductors above ground all as specifed and directed.
8M & L for fixing in repairs 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.
9Material & Labour for brazing of copper strip of different size complete all as specifed and all as directed.
10S&F in repairsPCC block Hollow (15cmx15cmx20cm) for fixing of GI/Aluminium/Copper strip with suitable size of insulators on roof top complete all as specified and as directed.
11Material and labour in replacement for provision of earthing complete with galvanized iron earth plate electrode 600 mm x 600 mm x 6 mm thick buried directly in ground (earth pit not less than 2.25 m deep below normal ground level) with top edge of the plate not less than 1.5 m deep below normal ground connected to galvanised mild steel strip 32 x6 mm by means of bolts, nuts, check nuts and washer of galvanized steel, watering pipe of 20 mm bore galvanised iron medium grade and 40 mm bore galvanised iron light grade for earth strip protectionincluding.....
12.....all excavation, earth work in any type of soil, PCC pitin PCC 1:2:4 type B-1 and RCC 1:2:4, type B1 for precast chamber cover 50 mm thick, reinforced with welded steel wire fabric or XPM Jali (weight not less than 4.00 Kg / sqm),with charcoal, salt, funnel complete all as shown in the electrical plate No 3 of SSR part –I and testing on completion. Note : (i)Earth result after installation completely should be less than 5 Ohm . (ii)Quoted rates shall be deemed to include for earth strip with protection pipe of 7.5 M length.
13Material and labour in replacementof earthing complete with copper earth plate electrode 600 mm x 600 mm x 3 mm thick buried directly in ground (earth pit not less than 2.25 m deep below normal ground level) with top edge of the plate not less than 1.5 m deep below normal ground connected tocopper strip of size 20 mm x 3 mm by means of bolts nuts check nuts and washer of galvanized steel, watering pipe of 20 mm bore, galvanised iron, light grade, and 40 mm bore galvanised iron light grade for earth wire protectionincluding all excavation earth work in any type of soil, PCC pit in PCC 1:2:4 type B-1 and RCC 1:2:4, .......
14........type B1 for precast chamber cover 50 mm thick, reinforced with welded steel wire fabric or XPM Jali (weight not less than 4.00 Kg / sqm),with charcoal, salt, funnel complete all as shown in the electrical plate No 3 of SSR part –I and testing on completion. Note:- Quoted rates shall be deem to include for earth strip with protection pipe of 7.5 M length.
15Material and labour in replacement for tripod chemical earthing (comprising of three chemical earthing) as per drawing attached (Sketch No 01). The chemical earthing will have specification as follows :- Make:- Powertrac/McML Earthing Solution/Ashlock. (a) Copper electrode of wall thickness minimum 2 mmnot less than 3 mtr length with not less than 75mm outer dia . (b) Fixing of copper Earth Electrode by drilling / boring 175 mm dia hole, 5.00 mtr deep in any type of strata, placing electrode in hole, return filling excavated soil by mixing min 10 kg GEL per bore and 75 kgSoil Resistivity Improvement (SRIP) compound as per manufacturer instruction
16c)FRP earthing result display board 254 x 380mm made out of plastic material showing information related to type of earthing, earthing result, due date of testing along with fixing size 610mm height made of plastic hollow pipe of dia 20 mm. (d)Heavy duty poly plastic Earth pit cover of HDPE material, green color, Bottom diameter ( OD 320 mm / ID 290 mm) of wall thickness 5 mm, height 260 mm with top cover, fixed in position as per manufacturer instruction complete by use of pCC around the cover for setting it properly on ground surface.
17(f) Contractor must visit the site before quoting the tender to understand the difficulty and cost for carrying out the job in the station. It is important that contactor ascertain the quantum of work. (g) Contractor must produce the certificate from the manufacturer that chemicalearthing has been carried out by manufacturer. (h) Extension strip from electrode strip up to 0.15 m height from GL and interconnecting strip of electrode shall be deemed included in quoted rate including brazing.(g) Earthing resistance result shall be less than 1ohm.if the result comes more than 1 ohm ,the contractor shall carry out the earthing at seperate location /sie given by engg- in- charge after taking out of earth electrode without any extra cost to the department.
18Material and labour in replacement for single rod chemical earthing (comprising of one copper rod, chemical earthing) as per drawing attached (Sketch No 02). The chemical earthing will have specification as follows :- Make:- Powertrac/McML Earthing Solution/Ashlock. (a) Copper electrode of wall thickness minimum 2 mmnot less than 3 mtr length with not less than 75mm outer dia . (b) Fixing of copper Earth Electrode by drilling / boring 175 mm dia hole, 5.00 mtr deep in any type of strata, placing electrode in hole, return filling excavated soil by mixing min 10 kg GEL per bore and 75 kgSoil Resistivity Improvement (SRIP) compound as per manufacturer instruction
19c)FRP earthing result display board 254 x 380mm made out of plastic material showing information related to type of earthing, earthing result, due date of testing along with fixing size 610mm height made of plastic hollow pipe of dia 20 mm. (d)Heavy duty poly plastic Earth pit cover of HDPE material, green color, Bottom diameter ( OD 320 mm / ID 290 mm) of wall thickness 5 mm, height 260 mm with top cover, fixed in position as per manufacturer instruction complete by use of PCC(1:3:6) around the cover for setting it properly on ground surface.
20(f) Contractor must visit the site before quoting the tender to understand the difficulty and cost for carrying out the job in the station. It is important that contactor ascertain the quantum of work. (g) Contractor must produce the certificate from the manufacturer that chemicalearthing has been carried out by manufacturer. (h) Extension strip from electrode strip up to 0.15 m height from GL shall be deemed included in quoted rate including brazing.
21M&L in replacement for stainless steel mast of 38 to 40 mm dia and length 3.0 metre (approximate weight 6.40 kilogram) fixed on roof slab/wall duly embedded in and including cement concrete (1:2:4)of size 40x40x40cm complete for supporting mast complete all as specified and directed.
22M&L for supporting /fixing arrangement of lighteningconductor or elevation mast to flat/curved roofs by Guy cables of suitable dia(according to height of lightening conductor or mast) properly and firmly anchored on base plate of dimension (200x200x3mm) with nuts,bolts etc in Tripod supporting pattern with an angle of 120 degree between wires complete all as specified and directed by engg-in-charge including taking down the old one.
23S&F in repair of Early Streamer Emission (ESE)lighteningarrestors ofcolor- steel white and material- stainless steel installed at Stainless steel pole mast of 38 to 40 mm dia and length 3.0mon building height upto of 16 mtr and shall confirmed to NFC 17-102, UNE 21186 and other National standards. Efficency >095 &<_98 , level 1, length 80cm , ?t For early stremer warning40 µSec ; 58 protection radius at Height of5 mtr(Accoding to NFC-17-102-2011 standards)and connecting with existing earthing with copper cable of suitable size and core all as specified and directed . Make SABO model No LAP BX125 or equivanlent of ABB, powertec , Ashlok.
24S&F in replacement of Sheet moulding compound (SMC) junction box of size200X140X95mm fixed with mild steel clamps, nuts and bolts complete. Make : SINTEX model No GSJB-2014 or equivalent make Legrand / EPP Composite Pvt Ltd
25Excavating in trenches, n exc 1.5 m wide and n exc 1.5 m in depth; for foundation, etc. or for shafts, wells, cesspits, manholes, pier holes, etc. n exc 10 sq m on plan and n exc 1.5 m in depth and getting out in soft / loose soil..
26Returning, filling in, including spreading, levelling, watering and well ramming in layers not exc 25 cm in any type of soil.
27Removing excavated soil to a distance n.exc 50 m and depositing where directed at a level n.exc 1.5m above the starting point.
28Supply and fixing in repairUnplasticiscdPVC pipes of pressure rating 10 kgf/cm2,bore dia 15 mm laid in trenches complete all as specified and directed.
29Supply and fixing in repair Unplasticiscd PVC pipes of pressure rating 10 kgf/cm2,bore dia 20 mm laid in trenches complete all as specified and directed.
30Supply and fix in repair 15 mm size UPVC half turn cock valve for UPVC pipe and fixed ISI marked complete all as specified and directed.
31Supply and fix in repair 20 mm size UPVC half turn cock valve for UPVC pipe and fixed ISI marked complete all as specified and directed.
32Supply and fix in repair 15 mm size PVC perforated caps screw to end of puff or vent pipe fixed on UPVC pipe and its should ISI marked complete all as specified and directed .
33M&L for back filling earthing compound as per standard IS 3043, IEEE 80and IEC 62561-7forimproved gound resistivity improver compound in powder formfor the earthing effectiveness and improves conductivity of the earth eletrode and ground contact areaand Eco frindly &effective for mainly consist of moisture , high conductivity , non- corrosive in nature and absorbs > 13 times water than its volume , resistivity <0.5ohm-mtr ,does burns,irritation to eyes,skin etc,non-explosive,ecofriendly,does not pollute soil or affect local water table ,thermally stable between -10 degree to +60 degree and NABL lab tested along with with taking down exisitng chemical rod and fillthe back filling compound with mixing with water all as specifed and directed by Engineer in charge. Make -JJ Engineering / SM Infotech / Powertack/ Power Plus/SABO
34Supply and fixin repair GI funnel of any size to be fix in existing earth pit along with Cleaning of earth chambercomplete all as directed by Engr-in-charge
35Supply and fixin repair Stranded copper cable coated in PVC is used as an internal earth conductorsize 10 Sqmmsingle core and high resistance insulation confirming with IS-694, IEC 62305, IEC 62561 forconnecting with lighting terminationand complete all as directed.
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