REPAIR MAINTENANCE OF LIGHTNING CONDUCTOR FOR VARIOUS LOCATIONS INSTALLATIONS AT INA EZHIMALA

Amount

Notes for all items of BOQ :- 1. Contractor should visit the site before quoting the tender to know the working condition of the station. 2. All requisite safety measures are to be adopted by contractor on site for working at any height / any building of INA Ezhimala.The Contractor will be fully responsible for any incident occurs at site. 3. The contractor shall also provide electrician on sunday & holiday if required or asked by JE E/M / Engineer-in-charge. 4. Contractor will be responsible to collect complaint from MES complaint cell Ezhimala at 9.00 am (every working day) and after resolving the complaint, resubmit at MES complaint cell for entry in computer, if the contractor does not rectify complaints within 24 hours, recovery will be done at Rs. 1000/- per day per complaint. 5. Quoted rate shall be included for working on high rise buildings. 6. The contractor will responsible for making arrangement of working on high rise building.

M&L for earthing complete with copper earth plate electrode 600 mm x 600 mm x 3.15m thick buried directly in ground (earth pit not less than 2.25 mtr deep below GL) with top edge of earth plate not less than 1.5 Mtr below normal ground level, earth plate surrounded from all sides by 15cm thick packed layer of charcoal dust and common salt filled in alternate layers and electrode connections by using copper earth strip of size 20x3.15 mm connected by means of bolts, nuts, check nuts and washer of copper, provision of 40mm dia GI pipe medium grade for protection of copper earth strip and 20mm dia GI pipe medium grade for watering arrangement and PCC (1:3:6) type C1 chamber of size 45cm x 45cm x 45cm including MS funnel, wire mesh, 50 mm thick RCC 1:2:4 type B1 earth pit cover with 6 Nos, 8 mm dia high strength deformed steel TMT bars on both ways including necessary excavation in any type of soil, returning filling in, removal of surplus soil to distance n exc 50 mtr, provision of charcoal and salt complete all as shown in electrical plate No 3 of schedule Part-I. Notes:- (i) Cost of copper earth strip and GI protection pipe upto 7.5mtr length shall be deemed to be included in the rate quoted for this item. (ii) The unit rate shall also includes for wire mesh, funnel, excavation, returning filling , removing , PCC chamber pit, RCC cover, test point etc.

M&L for earthing complete with galvanised steel earth plate electrode 600 mm x 600 mm x 6 mm thick buried directly in ground (earth pit not less than 2.25 mtr deep below GL) with top edge of earth plate not less than 1.5 Mtr below normal ground level, earth plate surrounded from all sides by 15cm thick packed layer of charcoal dust and common salt filled in alternate layers and electrode connections by using galvanised earth strip 25x4mm connected by means of bolts, nuts, check nuts and washer of galvanised iron or steel, provision of 40 mm dia GI pipe medium grade for protection of GI earth strip and 20mm dia GI pipe medium grade for watering arrangement and PCC (1:3:6) type C1 chamber, MS funnel, wire mesh, 50 mm thick RCC 1:2:4 type B1 earth pit cover with 6 Nos, 8 mm dia high strength deformed steel TMT bars on both ways including necessary excavation in any type of soil, returning, filling in, removal of surplus soil to distance n exc 50 mtr, provision of charcoal and salt complete all as shown in electrical plate No 3 of schedule Part-I. Notes:- (i) Cost of GI earth strip and GI protection pipe upto 7.5mtr length shall be deemed to be included in the rate quoted for this item. (ii) The unit rate shall also includes for wire mesh, funnel, excavation, returning filling , removing , PCC chamber pit, RCC cover, test point etc.

M&L for earthing complete with galvanised steel earth plate eletrode 600 mm x 600 mm x 6 mm thick buried directly in ground (earth pit not less than 2.25 mtr deep below GL) with top edge of earth plate not less than 1.5 Mtr below normal ground level, earth plate surrounded from all sides by 15cm thick packed layer of charcoal dust and common salt filled in alternate layers and electrode connections by using galvanised wire 4mm connected by means of bolts, nuts, check nuts and washer of galvanised iron or steel, provision of 15mm dia GI pipe medium grade for protection of GI earth wire and 20mm dia GI pipe medium grade for watering arrangement and PCC (1:3:6) type C1 chamber of size 45cm x 45cm x 45cm including, MS funnel, wire mesh, 50 mm thick RCC 1:2:4 type B1 earth pit cover with 6 Nos, 8 mm dia high strength deformed steel TMT bars on both ways including necessary excavation in any type of soil, returning, filling in, removal of surplus soil to distance n exc 50 mtr, provision of charcoal and salt complete all as shown in electrical plate No 3 of schedule Part-I. Notes:- (i) Cost of GI earth wire and GI protection pipe upto 7.5mtr length shall be deemed to be included in the rate quoted for this item. (ii) The unit rate shall also includes for wire mesh, funnel, excavation, returning filling , removing , PCC chamber pit, RCC cover, test point etc.

Supply and fix copper strip 20 x 3.15 mm with saddles and fixing screws etc. for roof conductors / down conductors / any place of building at any height, connecting to earth pit to equipment including DMC / FRP insulators with suitable distance, removing the old unserviceable strip and brazing all the joints complete all as specified and as directed.

Supply and fix GI strip 25x4mm with saddles and fixing screws etc. for roof conductors / down conductors / any place of building at any height connecting to earth pit to equipment including DMC / FRP insulators with suitable distance, removing the old unserviceable strip and brazing all the joints complete all as specified and as directed.

Supply and fix GI wire 4mm with saddles and fixing screws etc. for roof conductors / down conductors / any place of building at any height connecting to earth pit to equipment including DMC / FRP insulators with suitable distance, removing the old unserviceable strip and brazing all the joints complete all as specified and as directed.

Supply and fixing of air termination, single pointed, aluminium rod 12 mm dia and 300 mm long complete all as specified and directed by Engineer-in-Charge.

Supply and fixing of air termination, single pointed, copper rod 12 mm dia and 300 mm long complete all as specified and directed by Engineer-in-Charge.

M&L for tubes, 'medium grade', galvanised, 40mm dia with all fitting laid in trenches / pole for protection of earth strip complete all as specified and directed by Engineer-in-Charge.

M&L for checking the earth resistance of the existing earthing at any place once in three months and opening an earth resistance test register and recording building wise earth resistance including obtaining signature of user's representative in the register complete all as specified and as directed. Note:- The earthing shall be tested in presence of user/user representative. One time testing including entering in the register is considered as one job.

M&L for checking the serviceability including loose contact and condition of cable terminations of all the existing MCB DBs at any building/any place once in three months and opening a DB serviceability register and recording building wise including obtaining rep of users signature in the register complete all as specified and as directed. Note:- The checking shall be carried out in presence of user/user rep. One time checking including entering in the register is considered as one job.

Supply and fix DMC / FRP insulators of suitable size to seperate the earth strips from the walls, duly screwed on the walls and making holes in the earth strips by drilling and fixing the earth strip rigidly with the insulators with GI bolts, nuts, washers etc complete all as specified and as directed.

Supply and fixing aluminium strip 25x3.15 mm with saddles and fixing screws etc for roof conductors/down conductors/ any place of building at any height connecting earth pit to equipment including DMC/FRP insulators with suitable distance, removing the old unserviceable strip and brazing at all the joints complete all as specified and directed by Engineer-in-Charge.

Benchmark Engineers and Contractors (BID ID -3070948)

General Engineering and Constructions (BID ID -3081693)

JEETH CONSTRUCTION (BID ID -3070057)

Gates Infra Construction Co (BID ID -3075078)

RASNA ENTERPRISES (BID ID -3070037)

pk janardhanan (BID ID -3069673)

PADMANABHAN. K.V (BID ID -3069716)

TAMS ASSOCIATES (BID ID -3070521)