To Provide New Copper Plate Earthing, Renovation of Existing Earth Pits, Re-Numbering, Measuring of Values etc., at Institute Campus of CSIR - CFTRI, Mysuru

Digging of ground upto 8 feet of depth, below ground level either by Manual or Mini-JCB (including breaking of hard soil / rock(s) / tree root(s) etc., if any encountered while digging), to fix the Item No:07, refilling of good soil etc., (along with a) to g) instructions mentioned in S.No.07) as required under the directions of the Engineer In-Charge. Note: Proper care should be taken not to damage any of the existing Power / Internet / Telephone Cables / Drainage lines etc.,

To excavate soil around the existing earth electrode for 2-3 feet, provide new layer of 25Kg of Crystal Salt and 25Kg of Charcoal / Coke, watering the pit, megger the refurbished earth pits using Standard Operating Procedures with a callibrated meggar and paint the measured value in ohms (Ω) on the chamber either in Black Paint with Yellow Background or vice-versa along with date as per the directions of Engineer-in-Charge. The calibrated certificates for the all the measured earthpits to be produced in contractors letterhead along with Sign and Stamp mentioning the measured value, location etc., in standard format.

To megger the existing good earth pits using Standard Operating Procedures with a callibrated meggar and paint the measured value in ohms (Ω) on the chamber either in Black Paint with Yellow Background or vice-versa along with date as per the directions of Engineer-in-Charge. The calibrated certificates for the all the measured earthpits to be produced in contractors letterhead along with Sign and Stamp mentioning the measured value, location etc., in standard format.

Supplying and fixing of 20 mm size of medium class PVC conduit along with accessories in surface as required. Pipe Make: Please refer Special Electrical Conditions under Tender Document File.

Cutting road and making good the same including supply of extra quantities of materials i.e. aggregate, moorum screening, red bajri and labour required. Water Bound Macadam.

Cement Concrete 1:2:4 (1 cement : 2 coarse sand : 4 graded stone aggregate 40mm nominal size) in pavements, laid to required slope and camber in panels as required including consolidation finishing and tampling complete.

Earthing with copper earth plate 600 mm x 600 mm x 3 mm thick including accessories, and providing masonry enclosure with cover plate having locking arrangement and watering pipe of 2.7 metre long etc., with charcoal / coke and salt as required. Note for Each Copper Plate & Pit: a) Tin Coated. b) Suitable size copper flat to connect from the plate upto the funnel & terminated with Brass / SS Bolts and Nuts. c) 50Kg of Charcoal / Coke & 50Kg of Crystal Salt for each Earthpit. d) Either ready to use or by masonry work enclosure of size 1.5 Feet x 1.5 Feet x 1.5 Feet with lid. e) S.No:7 to be used from the funnel until crossing the wall by making a 20mm hole & making the bad good. f) To Water the earth pits. g) Standard Procedures to be followed for measuring values, recording etc.,

Providing and laying earth connection from earth electrode with 4.00mm dia copper wire in 15mm G.I. pipe from earth electrode including connection with copper thimble excavation and refilling as required.

Providing and fixing 25 mm X 5 mm copper strip on surface or in recess for connections etc. as required.

Providing and fixing 4.00 mm dia copper wire on surface or in recess for loop earthing along-with existing surface / recessed conduit / submain wiring / cable as required.