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| 1 | Supply, Installation, Commissioning and Testing of air terminal system of Collection Volume Method (CVM) with the following accessories |
| 2 | Dynasphere lightning conductor stainless steel as per IEC 61024. The Air terminal shall be placed using the \" Collection Volume Method / Field Intensification Method\" placement methodology as specified in IEEE-998 complete all as specified and as directed.Make : ERICO, Cat Part No: D/SMKIVSSor techno-commercially equivalent of SEIMENS/ HARGER Brief features/ specifications of the same is as follows:(a) Impulse Tested, atleast for40 KAboth +ve and -ve , 8/20 micro-second, resistance between the terminal tip and the sphere should be minimum 10 MO before and after the test. (b) Free from Corona effect, (c) Trigger an upward streamer when there is a downward stream.(d) The dome must be insulated from the rod but connected to ground via a dynamic variable impedance.(e) The center grounded electrode tip shall be at least 20mm diameter. (f) The terminal must be isolated from the structure using an insulated support mast making an isolated lightning protection system.(g) Air terminal should not be dependent upon batteries or external power supplies for any partof its operation.(h)Streamer Emission should not beESE type. |
| 3 | 5m elevation pole made of AL(aluminium) Mast with a dia of 60mm with a M20 thread at the top to fix the unit complete all as specified and as directed. Make : ERICO,Cat Part No: ALU-5Mor techno-commercially equivalent of SEIMENS/ HARGER |
| 4 | Air terminal Adaptor made up of Brass/SS for the connectivity of Air terminal & the Mast, with suitable terminal clamp made up of SS complete all as specified and as directed. Make: ERICO, Cat Part No:INTCPT-ADM3/4UNCor techno-commercially equivalent of SEIMENS/ HARGER |
| 5 | Base/ side Bracket to hold the Air terminal mast with suitable fixing accessories, Guy wire support and all required fixing equipment\"s complete all as specified and as directed. Make: ERICO Cat Part No:IGUYKIT4MGRIPor techno-commercially equivalent of SEIMENS/ HARGER |
| 6 | S & F2 runs of 8 mm Copper Bonded Steel Round Conductor, minimum copper bonding shall be 254 microns having continuous coin form, the conductor core shall consist of low-carbon steel grade for improved flexibility. The copper surface of the conductor should provide high conductivity and corrosion resistance properties, well-suited as a lightning protection conductor in accordance with IEC 62305-3 Edition 2.0 standard complete all as specified and as directed. Make : ERICO, Cat Part No: CBSC - 8MM or techno-commercially equivalent of SEIMENS/ HARGER.Note: 2 runs of 8 mm Copper Bonded Steel Conductor shall be measured and paid as one unit length. |
| 7 | S & F Clamp Holder made up of 304 grade SS with SS bolt and nut atevery 1 m distance of round conductor. The clamp should be suitable for double run of Copper bonded Steel round conductor size of 8-mm complete all as specified and as directed.Make: ERICO, Cat Part No: CBSC-8 SADDLE or techno-commercially equivalent of SEIMENS/ HARGER |
| 8 | Supply, Installation, Commissioning and Testing of Maintenance Free Radial Earthing system comprising of the following: |
| 9 | Copper Bonded Steel Earth Rod of size 5 feetx 5/8 inch diameter of 3 Nos, earthing system required excavation of 300 mm width x 450 mm depth x 5000 mm length in two different directions,2 radials should be 10 meters apart, Auger 3 Nos hole of diameter 4 inch and 4 feet depth in the soil, Placing the Earth rods in to the augured hole, hammering the rods to 1 feetdepth, Readymade PVC Heavy duty earth chamber (250 mm Dia , 260 mm Height) two numbers per one earthing system with minimum 5 ton load bearing capacity, removing excavated material complete all as specified and as directed. Make: ERICO, Cat Part No: CODE74071020 or techno-commercially equivalent of SEIMENS/ HARGER |
| 10 | Brief features/ specifications of CBSE Rod is as follows:(a) The outer surface must be molecularly bonded with uniform layer of 250 micron Copper, 99.9% pure electrolytic copper coating.(b) Nickel interface must be provided between the copper and steel to avoid the galvanic corrosion.(c) Must be capable of withstanding fusing current of 20 KA.(d) Earth rod must be in compliance with IEC 62305- 2.(e) Tensile strength greater than 80000 PSI on 12 mm.(f) High resistance to corrosion. |
| 11 | Ground Enhancement Material (GEM) , Per Bag -11.33 Kgs ,Conforming to IEC 62561-7 Standard, , Premixing the GEM into slurry form using water( not more than 5 L to 6 L per bag), Pouring the GEM mixture in the augured hole and filling complete all as specified and as directed. Make: ERICO, Cat Part No: GEM 25A- 25-1lb or techno-commercially equivalent of SEIMENS/ HARGER |
| 12 | Brief features/ specifications of the same is as follows:(a) Must be carbon based superior conductive material.(b) Resistivity must be less than 2 ?-cm.(c) Must not cause corrosion to copper when in contact.(d) Must not expand or experience any shrinkage once set.(e) Must not depend on the continuous presence of water / moisture / salt to maintain its conductivity(f) Must not decompose or leach out with time.(g) Must not contain hazardous chemicals as per IEC 62561-7 standard.(h) Flexural and possess compressive strength as per relevant standard.(j) Sulphur content must be less than 2%. |
| 13 | Cadweld Materials forConnections between Ground Rod with CBSC conductor by Exothermic reaction. Connections to be made with a semi-permanent graphite mould, which shall hold the conductors to be welded. Weld metal must be a mixture of copper oxide and aluminium complete all as specified and as directed.Make: ERICO, Cat Part No: 150 PLUS F20 or techno-commercially equivalent of SEIMENS/ HARGER |
| 14 | 8 mm Copper Bonded Steel Round Conductor, minimum copper bonding shall be 254 microns having continuous coin form, the conductor core consists of a low-carbon steel grade for improved flexibility. The copper surface of the conductor should provide high conductivity and corrosion resistance properties, well-suited as a lightning protection conductor in accordance with the IEC 62305-3 Edition 2.0 standard. Including excavation depth 30 cm for laying round conductor, removing excavated material, return filling complete all as specified and as directed. Make: ERICO, Cat Part No: CBSC - 8MM or techno-commercially equivalent of SEIMENS/ HARGER |
| 15 | S & F Lightning Event Counter, Installed on down conductor, Non resettable mechanical counter, Non electronic without battery or external power source, IP67 enclosure, Triggering impulse < 2 KA, 8/20 micro second,Warning sticker should be provided near to the Down conductor in a visible place complete all as specified and as directed. Make: ERICO, Cat Part No: LEC-IV or techno-commercially equivalent of SEIMENS/ HARGER |
| 16 | S & F Monkey Protection assy for the supporting mast & guy wire to avoid physical damage from monkey menance. The monkey protection assy shall be made up to 304SS protector of length 1 Mtr each for 03 Nos guy wires complete all as specified and as directed.Make: ERICO, Cat Part No:MONKEY-CUP ss 1m or techno- commerciallyequivalent of SEIMENS/HARGER |
| 17 | IMPORTANT NOTES FOR SL ITEM NOS 1.01 To 4.08 :(i) The complete work of the lightning protection system is to be got done from the OEM or their authorized sister concern/ channel partner only.(ii) Any items missed out in the technical specification, but technically required for efficient working of the system is deemed to be included in the unit quote rates.(iii) The approximate height of installation/fixing of the 5/7 Mtr elevation pole will be varying from 3 to 10 Mtrs from Ground/FFL. Contr is required to take all the safety precautions incl any type of ladders/scaffolding work & cost of the same is deemed to be included in the unit quoted rates.(iv) The contractor/firm is required to visit the site prior to quoting of the subject items/ work so as to ascertain the actual ground requirements. Any further query at a later date shall not be entertained & responsibility of the same shall rest on the contractor/ firm.(v) Comparative analysis in respect of the items wherever techno-commercially equivalent w.r.t the given Cat/Part/Model ref concerned is to be submitted to the Engr-in-Charge & GE for approval.(vi) The cost of making good the disturbed surfaces (Walls, Roofs, Pavement etc) is deemed to be included in the unit quoted rate of relevant items.(vii) Purchase Vouchers & Manufacturers test certificates to be submitted in original to the Engr-in-Charge.(viii) Design/Drawing/BOM/Technical Specifications of the complete lightning protection system showing the layout including dimensions is to be obtained from OEM strictly keeping in view the actual ground requirements & the same is to be got approved from Engr-in-Charge & GE before placing final order to the OEM.(ix) The contractor should submit a detailed Report of Test results (Air terminal, Lightning Event Counter and Grounding ) from OEM after completion of work and same is to be certified from Engr-in-Charge & GE.(x) Repair/ Servicing / Preventive & Breakdown maintenance of the complete lightning protection system is to be got donefrom the OEM/ Sister Concern/ Channel partner only by the contractorfor the entire defect liability period i.e two years from the certified date of completion & the cost of the same is deemed to be included in the unit quote rates.(xi) Testing at an interval of 6 months of the entire lightning protection system is to be got done from the OEM/ Sister Concern/ Channel Partner only by the contractor & report submitted accordingly to the Engr-in-Charge for the entire defect liability period & and the cost of the same is deemed to be included in the unit quote rates. |
| 18 | Taking down old unsv/damage lighting protection materia;s of mesh network type etc. incl making good the disturbed surfces even & smooth & matching to the existing/original surfaces complete all as specified and as directed.Note: The approximate height of exisitng mesh network type LPS will be from 3 to 10 Mtrs from Ground/FFL Contr is required to take all the safety precautions incl any type of laders/scafolding work & cost of the same is deemed to be included in the unit quoted rates. |
