REPAIR/ MAINTENANCE OF LIGHTNING PROTECTION, EARTHING ALONGWITH OTHER CONNECTED E/M WORK AT HEMRL LAB UNDER GE (I) RnD PASHAN

Amount

Supply and fix earth pit indicator made out of 200x250x2 mm MS sheet fixed on and including 25x25x3mm angle iron post 1 metre length with PCC 1:2:4 type B1 foundation block of size 200mm x 200mm x 300mm height using 20mm graded stone aggregate and painting exposed surface with two coats of synthetic enamel paint over coat of red oxide primer and writing letters (i) Earth pit No. (ii) Earth result in Ohms (iii) Date of testing complete all as specified and directed.

Material and labour for earth testing, identifying the earthings in building / LT Panel and recording the results on indicator board and producing three copies of test sheet duly signed by Contractor / JE / AGE E/M all as directed by Engr-in-charge. Note : Cost of labour and tools required for testing is deemed to be included in quoted rates.

Material and labour for earthing with galvanised steel earth plate electrode 600 X 600 X 6 mm thick buried directly in groung earth pit not less than 2.25 meter deep below ground level with top edge of the plate not less than 1.5 meter below normal ground level connected to galvanised strip 32x6mm by means of nuts, bolts, check nuts, washers of galvanised iron or steel all as shown in electrical plate No 03 of SSR Part-I connected to earthing test point including excavation / earth work in any type of strata, removal of surplus excavated material, GI pipe for watering and funnel, PCC 1:3:6 type C1 chamber including necessary formwork / moulded for fair and even surfaces, precast RCC 1:2:4 type B0 chamber cover slab, GI funnel , with GI watering pipe 20mm bore med gde, wire mesh, protection pipe 40mm bore GI pipe light gde for earth lead upto 7.50 meter long including testing complete all as specified and directed by Engr-in-charge. Note : Test report shall be prepared and submitted by the contractor in triplicate duly obtaining signatures of MES JE / AGE & PMG / user. Test reuslts are to be written in letters of 20mm height in white colour on black paint background.

Material and labour for testing of conventional type lightning protection system as specified here under in Technical Area / Lab/ Magzine bldgs inside HEMRL Complex :- (a) Before testing a visual check to be carried out jointly by the contractor, Engr-incharge and rep of users for the mechanical condition of all condutors, bonds, joints. (b) Testing continuity and resistance of conductors, Ohmic resistance of lightning conductor system complete with air termination but without the earth electrode connection and recording results. (c) Testing of each electrode point without continuity conductors, air termination and ring conductor. (d) Testing the resistance to earth of the whole installations with all earth electrodes continuity, conductors, air termination and bonding of other services and results are to be recorded. (e) All above testing are to be done in accordance with STEC Pamphlate No 7 and IS 2309,1999 (2nd revision) and IS 3043, 1987. The results are to be recorded in prescribed format duly signed by contractor, Engr-in-charge and rep of users and to be submitted by contractor in triplicate. Notes : (i) The testing mentioned above against 5(b) to (e) will be conducted only after rectifying the defects observed during visual check. (ii) Material and labour required for rectification of defects observed will be measured and paid separately under relevant itmes of sch 'A'. (iii) Unit rate quoted is deemed to be inclusive of writing board in white colour letters n. exc 2cm height on the black colour background on wall such as - tested on, due date of testing, E.g. EP No 1-ER 10 Ohms. EP No should be mentioned on individual earth pits and ER value of installation etc. all as specified and directed by Engr-in-charge. (iv) Contractor has to arrange necessary testing instruments of suitable range duly latest calibrated (certificates to be produced). The rate quoted is deemed to be include the above provision. (v) If Ohmic resistance valve exceeds 1 Ohm the system to be rectified by cleaning with CRC solution, tightening, replacement of bolts / nuts, rivets etc. to get value below 1 Ohm. (vi) LP system for complete bldg/magzine/shed/lab will be measured as one unit.

Taking down / dismantling existing perished copper strip 25x5mm / 20x3.15mm from any height of roof top / on walls / buried in to ground of conventional type lightening protection network system completa all as specified and directed.

Fixing only serviceable copper strip of size 25x5mm / 20x3.15 mm as obtained from as per sl item No 5 above, at any type of building / magzine / lab at any type on existing walls / buried under ground, including jointing the system of conventional type lightening protection network and making good the disturbed surface of walls complete all as specified and as directed.

Material and labour for copper strip 20x3.15 mm as earth continuity conductor fixed with saddels and fixing screws etc on wall complete all as specified and directed

Supply and fixing copper plate 150x150x3 mm thick with 1 No. round solidcopper bar 20mm dia & 150mm long brazed or threaded & fixed in the centre of the plate for manual electrostatic discharge & fixed on existing wall at height of 1.5 mtr all as directed.

Supply and fixing copper plate 600x600x3 mm thick fixed to floor by means of brass nuts / bolts and duly connected to ESDS system complete all as specified and directed.

Taking down / dismantling existing perished aluminium strip of size 25x3 mm from any height of roof top / on walls of conventional type lightening protection network system complete all as specified and directed.

Fixing only serviceable aluminium strip of size 25x3 mm obtained from sl item No 10 above fixed to wall on batten or recess or chases or burried in ground or drawn in conduit / pipe or fixed to poles or any other indicated situation for loop earthing etc or fixed on new PCC block at any height on roof top, on new isulators any type on walls including jointing the system of conventional type lightening protection network and making good the disturbed surfaces of walls / roof top match with existing surface complete all as specified and directed. Note : Insulators and PCC block shall be measured and paid seperately.

Material and labour for Aluminium strip 25x3.15mm with saddles and fixing screws etc. for roof conductors and down conductors above ground complete all as specified and directed. Note : (i) Epoxy base insulator and PCC block only will be measured and paid separately under relevant items. (ii) Unit rate quoted is deemed to be inclusive cost of one lead joint and 2 Nos GI nuts, bolts washers, screws and necessary T&P and machine work required at site.

Material and labour for dismantling and taking down from roof / poles air termination single pointed rod 12mm dia 300mm long and keeping in safe custody including making good the disturbed surfaces after resuse at specified location after replacement of PCC block, insulator, strip and connect to aluminium strip including 2 No drilling holes, nuts, bolts washers complete all as specified and directed by Engr-incharge. Note : Cost necessiated for temporary support structure required for worknig and safety deemed to be included in unit quoted rate.

Supply and fix in repairs recess mounted downlighter 24 watt with pressure die-cast aluminium heat sink & PC diffuser in white powder coated finish with integral electronic low THD (<10%) LED driver.

Supply and fix air termination single pointed aluminium rod of 12mm dia 300mm long fixed to aluminium strip 25x3mm including drilling holes, nuts, bolts washers for resting / supporting of air terminals etc. complete all as specified and directed.

Refixing air termination single pointed rod 12mm dia 300mm /1 RM long on rooft top existing network system or any type new network system after replacement of PCC block, insulator, strip and connect to aluminium strip including 2 No drilling holes, nuts, bolts washers complete all as specified and directed by Engr-in-charge. Note : Cost necessiated for temporary support structure required for workng and safety deemed to be included in unit quoted rate.

Material and labour for dismentling of existing inspection box of any material shape and size and supply and fixing of new inspection box/ cover box of size 250x150x100 made out of 2mm thick MS sheet with hinged front opening cover including provision of fixing 2 Nos epoxy insulators bimetallic strip and insulating PVC sheathed for incoming and outgoing aluminium / Gi strips for proper insulation etc complete all as specified and directed by Engr-in-charge.

Material and labour for PCC earth pit in PCC 1:2:4 type B1 (using 20mm graded crushed stone aggregate) including precast PCC 1:2:4 type B0 (using 12.5mm graded crushed stone aggregate) as in pit cover, GI funnel with wire mesh complete all as specified and directed.

Supply only of epoxy base insulator of suitable size, 35mm height fixed on PCC blocks / wall or MS angle / pipe or on traverse etc complete all as specified and directed by Engineer-in-charge.

Taking down / dismantling existing perished GI strip of size 32x6 mm from on walls / buried in to ground of conventional type lighteining protection network systme complete all as specified and directed.

Refixing only serviceable GI strip of size 32x6mm as obtained from as per sl itme No 20 above, on existing walls / buried under ground, on existing insulators any type including jointing the systme of conventional type lightening protection network and making good the disturbed surface of walls complete all as specified and directed.

Material and labour for galvanised iron stip in replacement of size 32x6 mm burried in ground or fixed on wall with suitable 35 mm size epoxy base insulator fixed on wall / floors fixed at distance / interval not more than 1.0 meter and connected to test point including bending, jointing at test points with 2 Nos GI nuts, bolts, with lead washers, jointing strips at all joints as directed by Engineer-in-charge. Note : Insulators will be measured paid separately.

Material and labour for CPRI approved special factory made earthing electrode comprising of hot dipped galvaized MS flat inserted in to GI pipe of 76mm bore (outer), 3 meter length, filled with non magnetic anti corrosive material speciall developed for ground resistance enhancement powder 2x25 Kgs around the electrode to retain moisture conforming to IS 3043 including necessary boring in ground of 150mm dia in any type of strata connecting to test point including FRP earth pit chamber. Note : The earth resistance shall be less than 1 Ohms complete. The contractor shall improve the earthing resistance within the permssible limit without any extra cost. Make : U-PROTEC EARTHING PVT LTD / I Torrent / JEFF Technologies / TRUE POWER.

Material and labour for PCC block of size 150x150x150mm in PCC (1:3:6) type C-1 with 20mm stone graded aggregate including necessary form / mould for fair and even surfaces, air termination rod / GI strip etc. complete all as specified and directed.

Material and labour for maintenance free grounding solution set earthing comprising of 17.2 mm copper bonded earthing rod, 3 meter long, copper terminal size of 100x50x6 mm with 2 Nos M8 holes for termination. Electrode must be tested for a short circuit test of minium 40 KA at CPRI/ NABL. The earthing electrode will be placed in the ground after a bore is drilled to the depth of 3.5 Meter. The bore drilling will be done with the help of a pneumatic boring machine, 50 kgs BFC will be placed in the bnore to cover the earthing rod from all sides. BFC will be poured in slurry form in a properly mixed condition. The earth pit cove sqaure 300x300x240 mm to be provided to cover the eath pit and shall be made of reinforced FRP and should be capable of carrying the weight of 5 Tons complete all as specified and directed. Note : (i) Copper strip will be measured and paid separately under relevant items of schedule. (ii) Resistance of earthing should not be more than 2 Ohm. Test report shall be prepared and submitted by the contactor in triplicate duly obtainig signatures of MES JE / AGE & PMG user. Test result are to be written in letter of 20MM height in white colour on black paint background. If the desired result not obtained after testing, the contractor should do re-earthing without any extra cost. Make : U-PROTEC EARTHING PVT LTD / I Torrent / JEFF Technologies / TRUE POWER.

Material and labour for GI funnel with wire mesh for earthing all as directed.

Supply and fixing uniquely designed circular highbay light fitting 100 watts with IP lens for better lighting distribution, in lumnes >120 lm/W, >130 lm/W making it a versatile solution for various industrial application. It has 4KV in-built surge protection & ingress protection of IP66 with additional safety chain. Make : Crompton / Havells / Wipro / Phillips.

Material and labour for GI tubing light grade of size 40mm bore for connecting to air termination rod/ protection to GI strip completer including brackets for fixing all as directed.

Supply and fixing uniquely designed circular highbay light fitting 200 watts with IP lens for better lighting distribution, in lumnes >120 lm/W, >130 lm/W making it a versatile solution for various industrial application. It has 4KV in-built surge protection & ingress protection of IP66 with additional safety chain. Make : Crompton / Havells / Wipro / Phillips.

Cutting the tree branches which touches the lightening protection system on roof / on traverse etc of each bldg at specified location and deposting the tree branches / leaves at 50 meter distance away from site complete all as specified and directed. Note : Any number of tree branches cut in one span will be measured as one length for payment purpose.

MAYUR ELECTRIC SERVICES (BID ID -3312062)

tulsani associates (BID ID -3312372)

GANGA ENTERPRISES (BID ID -3311833)

T.H.ASSOCIATES (BID ID -3312103)

SKS Electricals (BID ID -3313364)

YOGESH ELECTRICALS (BID ID -3311904)