Work for supply, installation and commissioning of ESC i.e, Early Streamer Emission type advance lightning protection system at different location of quarry at Gevra project.

Amount

Supply, installation and commissioning of advance lightning protection system. Each system shall consists of- (1)The lightning protection system advance type which shall be designed to send upward streamer earlier than surrounding metallic points, attract lighting to a preferred point & safety convey the lighting energy to ground with a predetermined route. ( working radius :120 mtr ) (2) .Lighting Air terminal with adaptor- Air terminal designed and tested to NFC17-12 AND une-21186 with stainless steel design suitable for all weather conditions. Air terminal made of non-corosive materials , utilize advance & sustainable technologies. Provide complete protection by capturing dangerous lighting discharges & safety channeling it to earth - 1 Set (3). Down Conductor- High voltage multi copper insualted cable of minimum fifty sq mm cross section insulated copper for lighting current dissipation to the earthing system with necessary accessories. Down cable should be in single length approx 90 meters from the air terminal to the earth pit. (4). Chemical Earthing:- Advance Maintenance free chemical earthing electrode made with pipe in pipe technology duty Copper pipe of 90 mm dia with primary conductor of size 50mm and two meter length ,50 kg chemical compound for each earth pit ,earth pit resistance max 01 ohms :03 no's (5). Lighting Strike counter- Lighting strike recorder shall be weather proof type. its should have six digits event count. Should have the capacity to count smallest strike . it should be a voltage sensing type counter, So that it will not register nearby strikes and static discharges due to induction effect - 1 no (6)- Surge Protection device- Lighting surge protection device conforming to EN61643-II and IEC 61643-1 to be installed in the distribution box - 1 No Note:- 1.Before execution of the work of erection of ESC i.e, Early Streamer Emission type advance lightning protection system at Gevra project, bidder has to submit TYPE TEST REPORT from “NABL / CPRI / ILAC or any Government accredited lab along with acceptance test report as per relevant Indian / international standard. (Execution of work shall be carried out as per instruction of Engineer Incharge).

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R.R. ENGINEERS AND SURVEYORS

CELMECH ENTERPRISE PRIVATE LIMITED