REPAIR, MAINT OF W/S DISTRIBUTION AND INSTALLATION AT MIL STN BD BARI UNDER GE KALUCHAK

Supply & Fix 20 mm bore GI Socket medium grade ISI Marked complete all as specified & as directed.

Description all as per Srl Item No. 1.00 here-in-before but of size 25 mm bore

Description all as per Srl Item No. 1.00 here-in-before but of size 40 mm bore

Description all as per Srl Item No. 1.00 here-in-before but of size 50 mm bore

Supply & Fix 20mm bore GI Elbow Med grade ISI Marked complete all as specified & as directed.

Description all as per Srl Item No. 5.00 here-in-before but of size 25 mm bore

Description all as per Srl Item No. 5.00 here-in-before but of size 40mm bore

Description all as per Srl Item No. 5.00 here-in-before but of size 50mm bore

Supply & Fix 20mm bore GI Long Bend Med grade ISI Marked complete all as specified & as directed.

Description all as per Srl Item No. 9.00 here-in-before but of size 25 mm bore

Supply and fix in replacement 20 mm bore GI Union Medium Grade, ISI marked complete all as specified & as directed.

Description all as per Srl Item No. 11.00 here-in-before but of size 25 mm bore

Description all as per Srl Item No. 11.00 here-in-before but of size 40 mm bore

Description all as per Srl Item No. 11.00 here-in-before but of size 50 mm bore

Supply & Fix 20mm bore GI Nipple of different length as per requirement, both end screwed Medium Grade, ISI marked complete all as specified & as directed.

Description all as per Srl Item No. 15.00 here-in-before but of size 25 mm bore

Description all as per Srl Item No. 15.00 here-in-before but of size 40mm bore

Description all as per Srl Item No. 15.00 here-in-before but of size 50mm bore

Supply & Fix 25 mmx20mm bore GI Reducing socket medium grade ISI marked complete all as specified & as directed.

Supply & Fix 40 mm x 25mm bore GI Reducing socket medium grade ISI marked complete all as specified & as directed.

Supply & Fix 20mm x20mm x20mm GI Tee Med grade ISI Marked complete all as specified & as directed.

Description all as per Srl Item No. 21.00 here-in-before but of size 25 mm x 25 mm x 25 mm

Supply & fix in 20 mm bore replacement of GI solid plug heavy duty ISI marked complete all as specified & as directed.

Description all as per Srl Item No. 23.00 here-in-before but of size 25 mm bore

M & L for Ball brass valve, high pressure type, with polythene float and flynut complete, suitable for use on overhead or service tanks, screwed for iron pipe or brass ferrule, having smooth operation and leak-proof performance, of size 20 mm dia, fixed in position complete all as specified and directed.

M & L for Ball brass valve, high pressure type, with polythene float and flynut complete, suitable for use on overhead or service tanks, screwed for iron pipe or brass ferrule, having smooth operation and leak-proof performance, of size 25 mm dia, fixed in position complete all as specified and directed.

Supply & Fix run Lead including spurn yarn & lead wool suitable for 80mm bore CI/DI pipe complete all as specified and directed.

Supply & Fix run Lead including spurn yarn & Lead wool suitable for 100mm bore CI/DI pipe complete all as specified and directed.

Supply & Fix run Lead including spurn yarn & lead wool suitable for 150mm bore CI/DI pipe complete all as specified and directed.

Note for Srl Item No. 1.00 to 29.00 (i) Any material such as lead, spun yarn, CI/GI/DI specials, lead joints, D-joints, mechanical/clamp joints, and GI piping accessories like sockets, bends, tees, unions, nipples, reducers, etc., required for attending complaints shall be measured and paid under relevant items. (ii) Complaints shall be attended and defects rectified by experienced plumber/pipe fitter with helper as directed. The plumber with helper shall report at the complaint cell daily by 0900 hrs. (iii) All complaints shall be attended and rectified within 08 hrs from the time of notification, failing which a penalty of Rs.100/- per complaint per day (08 hrs) shall be imposed and recovered from the contractor’s dues. Contractor’s representative shall be available from 0800 hrs to 2000 hrs to receive and notify complaints. (iv) If a defect cannot be rectified within 08 hrs, the contractor/representative shall immediately inform the Engineer-in-Charge. If found justified, no recovery shall be made. (v) Cutting, welding, connecting and threading of CI/DI/GI pipes for insertion of fittings and specials are deemed included in the job rate. Fittings and fixtures shall, however, be measured and paid separately under respective items of Sch ‘A’. (vi) The pipe fitter shall always carry necessary tools such as die set with cutters, taps, pipe and chain wrenches, caulking tools, spanners, ladders, etc., as required at site. (vii) The contractor’s representative shall collect complaints daily from MES Maintenance In-Charge. Stationery such as complaint register, job cards, etc., shall be arranged and maintained by the contractor.

M&L for lifting defective submersible pump set along with column pipes (any number/any depth/any size) from bore well, setting aside and stacking column pipes for reuse, lowering the submersible pump set with column pipes in bore well as existing, and making necessary water and electrical connections for proper functioning, complete all as directed." Notes: (i) Lifting/lowering shall be measured and paid only once for same nature of repair. (ii) Contractor shall attend and rectify the breakdown within 12 hours, failing which recovery @ ₹500 per hour shall be effected. (iii) In case the submersible pump set falls down during extraction/lowering/lifting, the contractor shall replace it with a new pump set of the same make and capacity at his own cost. No extra payment shall be admissible for this work

Supply & Fix new rubber gasket required against Serial Item No 35 here-in-before as per existing dia complete all as specified and as directed.

Supply & Fix New Nut and Bolt and washer required against Serial Item No 35 here-in-before as per existing dia and length, complete all as specified and as directed.

Supply and fix column pipe MS 80 mm bore ISI MARKED 3 Mtr length each welded with MS flanged drilled for nut bolt and washer including rubber gasket 3 mm thick complete all as specified and as directed.

Supply and fix column pipe MS 100 mm bore ISI MARKED 3 Mtr length each welded with MS flanged drilled for nut bolt and washer including rubber gasket 3 mm thick complete all as specified and as directed.

M&L for repair of submersible pump set of capacity 20–35 HP, 3 phase, 415 volts, comprising opening and inspection of motor/pump in MES yard/pump house/workshop in presence of Engineer-in-Charge, cleaning of parts to ascertain nature of defects, transporting defective unit to contractor’s workshop, carrying out necessary repairs including replacement of unserviceable parts as directed, re-assembling after repair, spray painting externally with two coats of synthetic enamel paint of approved shade, transporting back to MES yard/Pumphouse and testing in presence of Engineer-in-Charge to the entire satisfaction of Engineer-in-Charge, complete all as specified and directed

All as per the description of Serial Item No 36.00 here-in-before but for submersible pumpset of capacity 15 to 17.5 HP complete all as specified and as directed.

All as per the description of Serial Item No 36.00 here-in-before but for submersible pumpset of capacity 10 to 12.50 HP complete all as specified and as directed.

M&L for rewinding of stator of submersible motor pump working on three phase 415 Volt to 440 Volts of capacity 10 to 12.5 HP with water proof insulated copper wire of existing gauge (IS 8783:1995)and size to achieve the specified / required RPM including taking out old unserviceable winding complete all as specified and directed. Make of wire : Atlas/ Devidayal.

All as per the description of Serial Item No 39.00 here-in-before but for stator of submersible motor of capacity 15 to 17.50 HP complete all as specified and as directed.

All as per the description of Serial Item No 39.00 here-in-before but for stator of submersible motor of capacity 20 to 35 HP complete all as specified and as directed.

Supply & Fix the following item to be incorporated against Serial Item No 42 to 47 above: suitable for submersible pumpset of capacity 7.5 HP to 35 HP.

Water lubricant seal suitable for motor.

Bowl assembly

T bolt for motor

Thrust bearing for motors as per existing

MS Flanged reducer as per existing

Stud as per existing size

Neck ring

Stainless steel key for impeller shaft

Stainless steel motor - pump coupler

bush (gun metal) for pump as per existing

bush (rubber) for pump as per existing

Repars to pump shaft

Repars to motor shaft

Bush to motor shaft as per existing

Repair to Impeller by brazing or as required for 5 to 35 HP Pump set complete all as specified and directed.

sand guard

motor adaptor

Impeller sleeve(SS)

Servicing and overhauling of centrifugal monoblock pump set of capacity 2900 gallons per minute, 50–60 m head, 2900 RPM, coupled with 5–60 HP, 3-phase induction motor, including dismantling of the pump and motor in the presence of MES representative and inspection of all parts to ascertain serviceability, cleaning, washing, and greasing of bearings, heating and varnishing of stator and rotor with high-quality insulating varnish, checking and adjusting play of impeller and pump bushings, and replacement of any part found unserviceable with new parts, (the cost of which shall be deemed to be included in the rate of this item) reassembling of the motor and pump with all serviceable parts, installation of the motor-pump assembly, making all electrical and mechanical connections as per existing arrangement, and testing complete all as specified and as directed. Note : All costs of loading, unloading, handling, and transportation including any T&P like chain pulleys, cranes, or other equipment required to take the pump/motor to the workshop and back are deemed to be included.

M&L for rewinding of stator of induction motor working on 3 phase 440 volts for Centrifugal monoblock motor pump set of capacity 1-10 HP with bare copper winding of approriate gauge complete all as specified and directed.

M&L for Rewinding of stator of induction motor working on 3 phase 440 volts for Centrifugal monoblock motor pump set of capacity 35-60 HP with bare copper winding of approriate gauge complete all as specified and directed.

Supply only the following items to be incorporated against Serial Item No 50 to 52 above, suitable for centrifugal monoblock motor pumpset of capacity 25 HP to 125 HP of existing make, complete all as specified & directed :-

Body Spacer Bush

Gland shaft sleeve (SS) suitable for pump of capacity 25HP capacity as per site.

Gland shaft sleeve (SS) suitable for pump of capacity 30-50HP capacity as per site.

Gland shaft sleeve (SS) suitable for pump of capacity 60 HP capacity as per site.

Ball/Thrust bearing Nos NU 208 K suitable for different pump motor of 5 - 60HP capacity as per site.

Ball/Thrust bearing Nos NU 210 K suitable for different pump motor of capacity as per site.

O Ring Partv No 52201/52203/52202

Oil seal (DE &NDE)as per existing

Ball/Thrust DE bearing Nos NU 306 to 412 series suitable for different pump motor of capacity as per site.

Ball/Thrust bearing Nos 6305 to 6311 series suitable for different pump motor of capacity as per site.

Thrust plate set of CI

Bearing protection water shallenger

Brg bracket for 25 to 50 HP Pump motor set

Brg bracket for 60 to 60-125 HP Pump motor set

Neck ring

Body bush

Stud with nut of any size

Pump Shaft welding and machining

High quality plastic/ rubber coupling having No. TC-15, TC-17, TC-19 as required at site suitable for coupling of motor pump of different cap varying from 25 HP to 125 HP and all as specified.

Gland Bush with gland plate as per existing size

Coupling bolt

Coupling set

Tyre coupling as per exsisting

Pin bush coupling (as per existing OEM design)

S&F and testing Cast lron sluice valve, non-rising type conforming to IS-14846-2000, sutiable for 150 mm bore pipe consisting of SS spindle as per IS 6603, Cast iron Body, Dome & Wedge as per IS 210, greasy jute type gland packing, fasteners as per IS 1367, Natural rubber gasket, CI manual hand wheel etc complete double end flanged and drilled, of Class PN-1 ( ISI marked) including all jointing materials such as rubber gasket insertion sheet nut ,bolts and washers etc including taking out old unserviceable sluice valve from pipeline and removing from site complete all as specified and directed.

S&F and testing Cast lron sluice valve, non-rising type conforming to IS-14846-2000, sutiable for 100 mm bore pipe consisting of SS spindle as per IS 6603, Cast iron Body, Dome & Wedge as per IS 210, greasy jute type gland packing, fasteners as per IS 1367, Natural rubber gasket, CI manual hand wheel etc complete double end flanged and drilled, of Class PN-1.6 ( ISI marked) including all jointing materials such as rubber gasket insertion sheet nut ,bolts and washers etc including taking out old unserviceable sluice valve from pipeline and removing from site complete all as specified and directed.

All as per above item No 53.00 but but of size 80 mm dia

S&F Cast iron non return valve single door confirming to IS 5312, Part-1 / BS EN 12334 (BS 5153) suitable for 150mm bore pipe class PN 1.6 gun metal sheat and flap with flanged and drilled flanged ends including having bypass arrangement complete all as specified and directed.

All as per above item No 55 but of size 100 mm dia

Supply and fix gun metal gate valve confirming to IS : 778/1980 CL-1 with iron wheel head screwed both ends or iron pipe of size including dismantling old one complete all as specified and directed.

20 mm dia bore

25 mm dia bore

40 mm dia bore

50 mm dia bore

Excavation in trenches n.exc 1.5m wide and n.exc 1.5m in depth for laying pipes or foundation etc. or for shafts, wells, cesspits, manholes, pier holes etc. n.exc 10sqm on plan and n.exc 1.5m in depth and getting out in any type of soil complete all as specified and directed.

Returning, filling in including spreading, levelling, watering and well ramming in layers n.exc 25cm in any type of soil complete all as specified and directed.

Removing excavated material (soil) to a distance n.exc 50m and depositing where directed at a level n.exc 1.5m above the starting point complete all as specified and directed.

Taking out Cast iron water main / Ductile iron pipe line (including all fittings) with spigot and socket ends /Flanged pipes including burning out lead joints and recovering lead and removing to store for reuse complete all as specified and as directed :- Note : Excavation and earth work shall be measured and paid separately.

100 mm dia bore

150 mm dia bore

Supply, laying and fixing in position Ductile Iron (DI) Spun Pressure Pipes of Class K-7, with spigot and socket ends suitable for push-on (Tyton) rubber gasket joints, conforming to IS: 8329–2000 (latest revision), ISI marked, internally cement mortar lined with Portland Slag Cement and externally coated with zinc and black bitumen, including jointing materials, lowering, aligning, and testing, complete in trenches or on pedestals as required and as directed by Engineer-in-Charge. Note: Earthwork including excavation, returning, filling and removal of surplus soil is deemed to be included. DI fittings shall be measured and paid for separately where required.

100 mm dia bore

150 mm dia bore

M&L for Cast Iron/Ductile Iron fittings conforming to IS: 9523–2000, of Class K-12, PN-10, suitable for spigot and socketed pipes such as bends (any type, radius, and angle), tapers (straight, bend, increasing, decreasing or double socket type), tees (single branch), Y-junctions, double branches, crosses (all sockets or socket and spigot), collars, caps and plugs, up to 200 mm bore, complete all as specified and directed by Engineer-in-Charge. Note: Excavation and earthwork shall be measured and paid for separately.

Taking out existing old unserviceable /rusted / broken galvanised iron water main pipe line (including all fittings) and removing to store for reuse complete all as specified and as directed :- Note : Excavation and earth work shall be measured and paid separately.

20 mm dia bore

25 mm dia bore

40 mm dia bore

50 mm dia bore

80 mm dia bore

100 mm dia bore

Supply and laying , connecting and testing galvanised iron medium grade water tubing with all fittings and fixtures (ISI marked) confirming to IS:1239 laid in trenches or fixed on wall or in any position including necessary saddles and iron clamps complete of following sizes :- Note: The work shall be carried out at various locations under GE Kaluchak and including on external building walls upto a height of 7th story .Rates quoted includes for necessary scaffolding arrangement.

20 mm dia bore

25 mm dia bore

40 mm dia bore

50 mm dia bore

80 mm dia bore

100 mm dia bore

Servicing and maintenance of existing Chemical Dosing system suitable to inject solution upto 25 LPH comprising dosing pump coupled with three phase electric motor of capacity 0.5 HP, 1440 RPM assembly with agitator in one motor, agitator with SS sweep blade duly FRP coated, FRP tank 150 ltrs capacity, complete unit of make satya sai including replacement of unserviceable part at site chemical dosing system & changing of Teflon gland packing and cleaning of NRV set, checking the complete system complete all as specified and as directed.Make of Plant : Sathya Sai Services .Notes :1. Servicing shall be carried out by the company rep and the rate for this shall deemed to be included in item. 2. Spares shall be of original manufacturer only.3. Spares shall be paid and measured and seperately under as Supply only as mentioned here-in-after :-

PVC adopter for suction and delivery without NRV.

PVC strainer washer type heavy duty or Y type strainer for suction.

Teflon gland square type 3 mm

Chemical Oil seal with cap

Monoblock pump set capacity 0.5 HP suitable for chemical dosing plant all as per specified and directed by Engr - In - Charge

M/L for carrying out physical, chemical & Bacteriological analysis all as per IS 10500:2012 for Drinking water (Fresh potable/raw water from Pump Houses at various locations under GE Kaluchak) from approved govt or other approved labs .Note : The rate quoted deemed to inclusive of collecting and transporting water sample in Sterilised bottle/PVC container & submitting the same for testing on same day .Note: water sample from one borewell will be considered as one job complete all as specified and directed.

Cleaning of overhead tank of capacity 50,000 gallons (twin or single chamber) by draining the entire water, brushing all internal surfaces with iron brushes, removing all mud, silt, and hard deposits, thoroughly washing the inner surfaces including high-pressure jet washing, treating with bleaching powder and disinfectant solution, allowing proper drying, applying a coat of whitewash to the bottom, sides, and ceiling of the tank, and optionally applying anti-algal/anti-fungal coating, including writing the date of cleaning and next due date on the outside , complete as specified and directed while ensuring all safety measures for confined space entry are followed. Note: All tools, plants, equipment (T&P), disinfectants, and materials required for cleaning and protective measures shall be deemed to be included in the unit rate quoted.

M&L for taking out CI/MS/DI pipe flanged type 150mm/100mm dia of rising main/delivery /over flow of Over head reservoir of height 30 metre , cleaning, welding and refixing with replacing nuts and bolts,rubber gasket/gland packing etc incld replacement of sluice valve as required at site and as directed by Engineer in charge.Note: The work shall be carried out at various linstallations under GE Kaluchak .Rates quoted includes for necessary scaffolding arrangement upto a heigfht of 30 metres.The sluice valve shall be measured and paid separately under respective items.

Repacking stuffing box of sluice valve spindle,replacement of worn out check nuts,repairs to gate assembly,replacement of jointing materials such as rubber gasket ,nuts bolts and washers gland rope including taking apart and reassembling for 80mm bore complete all as specified and directed by Engineer in charge.

Repacking stuffing box of sluice valve spindle,replacement of worn out check nuts,repairs to gate assembly,replacement of jointing materials such as rubber gasket ,nuts bolts and washers gland rope including taking apart and reassembling for 100mm bore complete all as specified and directed by Engineer in charge.

Repacking stuffing box of sluice valve spindle,replacement of worn out check nuts,repairs to gate assembly,replacement of jointing materials such as rubber gasket ,nuts bolts and washers gland rope including taking apart and reassembling for 150mm bore complete all as specified and directed by Engineer in charge.

Taking out sluice valves ,refacing,regrinding ,threading and refixing for 80mm bore all as directed.

Taking out sluice valves ,refacing,regrinding, threading and refixing for 100mm bore all as directed.

Taking out sluice valves ,refacing,regrinding, threading and refixing for 150mm bore all as directed.

M&L for packing glands of size 6-10mm complete all as specified and as directed.

M&L for packing glands of size 11-25mm complete all as specified and as directed.

Supply, laying and testing PVC insulated and sheathed flat 3 core 6 Sqmm copper stranded conductor water proof submersible cable fixed to submersible monoblock pump set to starter as directed including taking out old unserviceable cable.

Supply, laying and testing PVC insulated and sheathed flat 3 core 10 Sqmm copper stranded conductor water proof submersible cable fixed to submersible monoblock pump set to starter as directed including taking out old unserviceable cable.

Supply, laying and testing PVC insulated and sheathed flat 3 core 16 Sqmm copper stranded conductor water proof submersible cable fixed to submersible monoblock pump set to starter as directed including taking out old unserviceable cable.

M&L for re-routing and rearrangement of LT electric cables of any type and size inside pump house building, including disconnecting existing cable connections, shifting cables to new alignment, re-dressing, clamping on wall using suitable GI saddles/clamps, providing GI pipe protection at required locations, replacing damaged lugs/glands, reconnecting with new aluminium/copper lugs, insulation tape/heat-shrink sleeves, tightening of terminations, testing and commissioning on completion, and making the installation neat and safe, complete all as directed. Note: GI pipe required for cable protection shall be measured and paid for separately.

S&F GI pipe light grade, ISI marked, of size 40 mm , fixed on wall/ceiling using suitable GI saddles, clamps and necessary fittings such as bends, sockets, tees, reducing sockets etc, providing adequate support and alignment for protection of electric cables, complete all as directed.

Material and labour PCC 1:4:8 type -D2 using 40mm graded aggregate in fdn filling and mass complete for pipe line supports or any indicated position complete all as specified and directed.

M&L for chlorine test kit with coloured sample complete with all testing fitments and OT solution in rexene finish box complete all as specified and directed.

Supply only OT solution for chlorine test 500 ML bottle complete all as specified and directed.

Cleaning the entire area within the fencing/ boundary wall of tubewell installations which includes cutting of bushes/shrubs/unwanted grass in the periphery/surronding of complete installation i.e O/H reservoir, Gen rooms, Clear water sumps, removing unwanted grass at the complete installation including sweeping of whole area and disposal of all the removed material as directed after cutting/cleaning. The plinths around the complete buildings at installation is to be maintained free from any type of grass and cleaning complete all as directed and specified by Engr in charge. (Rate quoted will be composite cleaning of area throughout the periodicity as an when required by deploying regular source of cleaning i.e man power and all type of T&P.).

M&L for febrication of MS clamp made out from flate 150 mm x 12 mm thick bend to shape drill a hole four nos in each clamp of size 16 mm dia suitable for holding MS cloumn pipe size 150 mm dia complete with provn of four nos nuts 4'' long and washer complete as per sample

Supply, installation, testing and commissioning of factory-fabricated LT Panel (Horizontal type, two tier) floor mounted, cubical, dust and vermin proof, made of CRCA sheet not less than 3.0 mm thick, powder coated, having IP-42 protection, overall size approx. 1500 mm (L) × 1000 mm (H) × 450 mm (D), comprising the following: (i) One Incomer MCCB 160 Amps, 25 kA, 4 pole - 01 Nos (ii) Outgoing MCCB 63 Amps, 25 kA, 4 pole - 3 Nos & MCB SPN 40A - 01 Nos (iii) Changeover switch 160 Amps, 4 pole, manually operated, complete with interlocking arrangement. (iv) Aluminium busbar of suitable rating (minimum 250 Amps) mounted on insulators, colour-coded. (v) Digital PAF with CTs of CT ratio 100/5, indicating lamps. (vi) Suitable cable end termination boxes with gland plate and spreader links. (vii) Earthing terminals 2 Nos with GI strips/lugs. (viii) All internal wiring with PVC insulated copper conductor wire of suitable size, ferruled and neatly dressed. (ix) Panel base channel frame with anti-vibration pads. (x) Base frame: 50×50×6 mm MS angle/channel. (xi) Panel to be grouted on PCC pedestal (approx. 150 mm high above floor). (xii) 2 Nos. earthing terminals on both ends of base channel. The panel shall be supplied, grouted on PCC foundation (including necessary bolts, nuts, foundation frame, grouting and finishing work), installed in position, factory wired, tested and commissioned at site, including all accessories required for safe and efficient operation, complete all as specified and directed.

S&F in repairs Detachable Joint (D-Joint) suitable for 150 mm dia CI water supply pipeline, including jointing materials such as rubber insertion, nuts, bolts, washers, and tightening to ensure leak-proof connection with cutting and welding work required as per site , testing and commissioning complete all as specified and directed.

S&F in repairs Detachable Joint (D-Joint) suitable for 100 mm dia CI water supply pipeline, including jointing materials such as rubber insertion, nuts, bolts, washers, and tightening to ensure leak-proof connection with cutting and welding work required as per site, testing and commissioning complete all as specified and directed.

M&L for painting of pump motor, rising mains, delivery mains and distribution header, distribution diagrams which includes sluice valves, NRV fittings, sockets, elbows etc , rising mains of overhead tanks, overflow mains, delivery mains of overhead tanks with color coding of various tubewell installations as directed and specified by Engr in charge (Rate quoted will be composite of material, labour and T&P throughout the periodicity as and when required)

M & L for High Strength Calcium Based Granular Disinfectant (Calcium Hypochlorite), supplied in air-tight sealed containers, suitable for potable water treatment and disinfection, capable of yielding 0.5–1.0 ppm free chlorine with approximately 100 g per one lakh litres of water, complete all as specified and directed.

Note for item No 93: (a) Free-flowing, off-white granules, maximum 10% moisture, maximum 9% inert or water-insoluble residue, non-caking and stable under storage. (b) Required dose approximately 100 g per one lakh litres of water to achieve 0.5–1.0 ppm free chlorine at injection point; actual site dosage may vary with raw water quality. (c) Minimum shelf life of one year with minimal loss of available chlorine. (d) Maximum 4% calcium hydroxide content; free from lumps, foreign matter, or hazardous impurities. (e) Supplied in dry, clean, air-tight, moisture-proof containers, properly sealed and labelled with manufacturer’s name, batch number, date of manufacture, net and gross weight. (f) Each batch accompanied by test certificate from a Government-approved or NABL-accredited laboratory, Safety Data Sheet (SDS), and Certificate of Analysis (COA). (g) Material shall conform to relevant IS/ASTM/WHO standards and comply with all applicable health, safety, and environmental regulations. (h) Contractor responsible for ensuring genuine, unadulterated supply, safe transportation, handling, and storage, complete all as directed by the Engineer-in-Charge.

M&L for plate earthing complete with galvanized mild steel plate electrode 60 cm x 60 cm x 6 mm thick buried directly in ground vertically (in earth pit not less than 2.25 meter deep below ground level) with the top edge of earth plate at a depth not less than 1.5 meter below normal ground level, the earth electrode surrounded by adequate quantity of charcoal dust and salt to a packed thickness of 15 cm on all sides and including GI strip 32x6 mm bolted (with GI nuts, bolts & check nuts) and riveted to earth (Plate) electrode at one end and connected to main switch board /panel/ test point at the other including watering GI pipe (medium grade) 20 mm bore from bottom of earth pit to top of electrode and 40 mm GI pipe light grade for earth strip protection complete with earth pit in PCC 1:2:4 type B0 using 12 mm graded crushed stone aggregate, RCC cover, funnel, wire mesh including necessary excavation and earth work in any type of soil, returning filling in and removal of surplus soil including testing complete all as specified.

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