Supply and installation of material with testing and commissioning of two Earthings for protection of electronic systems and two Earthings with Lightening Arrestors at Jabalpur Airport

Amount

Items to be supplied

Copper plate_1foot X 1foot X 3mm_ Purity Not Less than 90% of material.

Copper strip 25mm X 3mm (Cross section Dimensions) _ Purity Not Less than 90% of material.

Galvanized pipe _3inchX1.5mmX10feet

Galvanized Pole _3inchX1.5mmX20feet

Iron Chamber _1.5’X1.5’X0.25’,of3mm sheet

Charcoal

Clay, Soft Soil

Copper Lightening arrestor Device Type:Copper Ball Mounted with five radiating out 2”long light arresting spikes. Or any other type as per the discretion of Incharge CNS. Total weight atleast 250gms & purity Not Less than 90% of material.

Works to be carried out

Digging of 5’X5’X10’(depth) sized pits on Semi rocky soil.

Masonry brick work of size 2.5’X2.5’X3’ and mounting of pole.

Placement in above four pits the above copperplates, GI pipes. Refilling of Salt, charcoal, and Softsoil. Measurement of “Earth resistance” at each earth pit without external connections. Note:-If value is beyond 1.5 Ω (Ω=ohms) in above measurements, the payments will not be made. Clamping and Fitting of copper strip with proper flat clamps. Brazing works of all joints in earthing and Lightening arrestor circuit.

Repair works of RCC Base 5’X5’X6”(depth) at four earthing sites and mounting of Iron chamber thereafter. Clearing of debris and removal of unwanted material around earth pits. Commissioning after completion of all works.

RIGHT ENGINEERING