REPAIR MAINT OF LIGHTENING PROTECTION EARTHING AND REPLACEMENT OF EARTH STRIP TEST POINT AND OTHER MISC WORK AT NAVAL STATION KARANJA

Amount

Notes : (i) The work consists of 02 jobs as under:- JOB (A) : TPP 2024-2025 Ser No. 62 (ii) Please refer schedule 'A' notes before quoting the tender. (iii) Amount of Schedule of Credit shall be deducted off line by the department. ITEMS FOR JOB 'A'

S&F in repairs air termination single pointed aluminium rod 12 mm dia and 300 mm long with necessary fixing arrangement on PCC blocks on roof, complete all as specified and directed

S&F in repairs air termination single pointed copper rod 12 mm dia and 300 m long with necessary fixing arrangement on blocks on roof, complete all as specified and directed

All as per BOQ Serial item No 1.01 above but of 1.00 mtr long 12 mm dia and making suitable arrangement for fixing of 1 mtr rod on roof complete all as specified and directed.

S&F in replacement copper strip 32 mm x 6 mm buried in ground for earth continuity conductor or fixed to porcelain, insulator fixed to wall, complete all as specified and directed

All as per BOQ Serial item No 1.04 above but copper strip of size 20x3.15mm

All as per BOQ Serial item No 1.04 above but copper strip of size 25x3.15mm

Removing & refixing of air termination single pointed aluminium rod 12 mm dia and 300 mm long by tightening with necessay fixing arrangement fixed on existing/new PCC blocks on roof and making good complete all as specified and directed.

Removing & refixing of air termination single pointed copper rod 12 mm dia and 300 mm long by tightening with necessay fixing arrangement fixed on existing/new PCC blocks on roof and making good complete all as specified and directed.

All as per BOQ Serial item No 1.07 above but 1.00 mtr long but fixed on roof

S&F in replacement aluminium strip of size 25 x 3.15 mm fixed with suitable saddles & fixing screw etc on roof with rubber & bitumen washer & fixed to insulator on wall for down conductor, complete all as specified and directed

All as per BOQ Serial item no 1.11 above but GI strip of 32x6mm on wall/surface for conductors or as earth continuity conductor complete all as specified and directed.

S&F in repairs GI strip 32mm x 6 mm burried in ground for loop earthing and ground grid including excavation and earth work in any type of soil complete all as specified and directed. Note :- For item No 1.04 to 1.06, 1.11 to 1.13 & 1.16 to 1.20 : Procelain insulators & PCC block wherever required shall be measured and paid seperately under relevant item.

S&F in repairs test point terminal block made of gun metal or phosphorus bronze size 75 x 75 x 25 mm thick drilled and screwed including 3 Nos 8 mm dia 25 mm long hexagonal head screws fixed to GI strip bracket fixed to porcelain insulator in wall, complete all as specified and directed Note :- Porcelain insulator will be measured & paid for separetly.

S&F vitreous china porcelain insulator with busbar support white type, complete all as specified and directed

Re fixing in repairs only aluminium strip of size 20/25 mm x 3.15 mm fixed to procelain insulator fixed with suitable saddles & fixing screws etc for roof with rubber & bitumen washer & fixed to insulator only on wall for down conductor, complete all as specified and directed

Re fixing in repairs only copper strip of size 25 mm x 3.15 mm fixed to procelain insulator fixed with suitable saddles & fixing screws etc for roof with rubber & bitumen washer & fixed to insulator only on wall for down conductor, complete all as specified and directed

Re fixing in repair only copper strip of size 20mm x 3.15 mm fixed to procelain insulator fixed with suitable saddles & fixing screws etc for roof with rubber & bitumen washer & fixed to insulator only on wall for down conductor, complete all as specified and directed

Re fixing in repairs only copper strip of size 32mm x 6 mm fixed to procelain insulator fixed with suitable saddles & fixing screws etc for roof with rubber & bitumen washer & fixed to insulator only on wall for down conductor, complete all as specified and directed

All as per BOQ Serial itemNo 1.19 above but GI strip of 32x6mm

M&L for testing of Lightning Conductor & earthing except new earthing as given in BOQ Serial item No 1.22 & 1.23 of various Tech Accn in NAD area & Tunir Area in the presence of users representative & Engineer-in-Charge & maintaining record of tests for lightning conductor as per IAFW -2215 by removing all connection and the resistance of earthing & lightning protection network should not exceed 5 Ohm in every technical building showing the details of defective earthing & lightening protection system. Items to be repaired/renewal during record of sets for lightening conductors as per IAFW 2215 & also test results to be recorded after repair/renewal and should be signed by users also Note :- (i) The earthing showing result beyond 10 ohm to be renewed and shall be measured & paid for separately under relevant item of BOQ'. (ii) The test result after renewal of earthing and replacement of defective conductor also be recorded in earthing test book as per IAFW-2215 for lightening conductor & cost for the same is deemed to be included in unit rate of above item. (iii) The unit rate quoted shall be deemed to be included for the test results of all existing earthing point, date of testing and renewal etc to be written on wall of each building in clear format like stenzil etc as per direction from engr-in-charge with out any extra cost.

M& earthing complete with GI earth plate electrode of size 60 cm x 60 cm x 6 mm thick burried directly in ground (earth pit not less than 2.25 m deep below ground level) with top edge of the plate not less than 1.5 m below the normal ground level connected with GI strip 32 x 6 mm by means of bolts, nuts, check nuts & washers of galvanished iron steel including necessary excavation and earth work in any type of soil, removing surplus soil to a distance not exc 50 m, with and including PCC chamber in PCC (1:2:4) , type B1, using (20 mm graded stone aggregate), mild steel angle iron frame made out of MS angle iron of size 40x40x6 mm thick duly painted with two coats of synthetic enamel paint over one coat of red oxide zinc chrome primer hinged with and including 6mm thick CI cover with handle, watering arrangement with funnel internally secured with wire mesh with 20 mm dia medium grade pipe for watering ,40 mm dia light grade GI pipe for lead protection in & including alternate layers of charcoal dust and common salt complete all as shown in electrical plate No 3 of SSR Part-1(2009) connected to earthing test point all as specified and indicated including testing on completion Note : (i) The unit rate includes for protection pipe and GI strip from top of earth plate up to 7.5 meter above ground level and also the cost of the Test point. (ii) Joining of GI earth strip with pipe of the test point shall be done by using suitable cable lugs.

All as per BOQ Serial item No.1.22 hereinbefore, but with copper earth electrode of size 60 cm x 60 cm x 3.15 mm thick & earth continunity lead of size 20 mm x 3 mm copper strip, complete all as specified and directed 'Note :-for item No. 1.22 & 1.23 :- (i) copper strip upto 7.5 m will be deemed to be inluded in quoted rate. (ii) The earth chamber shall be constructed 50 cm away from the edge of earth pit & the cost of the same is deemed to be included in rate quoted for above items. (iii) The rates quoted are also deemed to be included for cost of new test point as specified.

Supply and installation a set of maintanance free earthing system consisting of 03 number of copper bonded earth rod of 17.2mm dia x 2 mtr length with coated with 250 micron electrolytic grade copper tested on 25 KA fault current by CPRI with driving head and tip to directly drive the earth rod to the ground with each rod interconnected with 20x3.15mm copper strip at the interval of 2mtr to form a square complete all as specified and directed NOTE:-The rate includes testing of earthing system and getting the earthing value less than 3 ohm in any soil condition.

M&L PCC (1:2: 4) type BO, using (12.5 mm graded stone aggregate) of blocks size and IE rules including necessary use and waste of form work as in grounting of porcelain insulator, complete all as specified and directed

M&L for PCC (1:2:4) type B1, using (20 mm graded stone aggretgate) for earth chambers as in repairs, coping for GI pipe post including necessary form work, excavation in soft loose soil, returning in filling and removing surplus soil to a distance n. exc 50 mtr and deposing complete all as specified and directed

Removing existing worn out CI cover with angle iron frame of earth chamber and S&F CI cover of size 30 cm x 30 cm x 6 mm thick fixed in frame made out of mild steel angle iron 40 mm x 40 mm x 6 mm thick with and including locking and lifting arrnagement, painting with two coats of synthetic enamel paint over a coat of red oxide zinc chrome primer complete all as specified and directed

S&F 40 mm dia GI pipe medium grade for post not exceeding 3 mtrs in length truly vertical position embbed in PCC including n.exc and earth work as in repairs, complete all as specified and directed. Note : PCC of of pole embeded will be measured and paid separately under relevant items of Sch.

Supply and lay 40mm dia, GI pipe, light grade, burried in trenches as earth continuity protection as in repairs, including necessary excavation and earth work in any type of soil, returining & filling in, watering and well ramming, removal of surplus soil to a distance not exc 50 mtrs complete all as specified and directed.

R A Electric Co. (BID ID -3084208)

BRICKS ON CLOUD INFRA (BID ID -3089592)

shree arihant constrution (BID ID -3082968)

Om Sai Enterprises (BID ID -3081107)