Military Engineer Services-MES has published Tender For Repair/Renewal Of Water Supply Line Incl Cleaning Of Underground Reservers And Pvc/Rcc Service Tank And Periodical Maint And Operation Of Filteration Plants At Turf View Complex Under Ge Alipore Kolkata. Submission Date for this Tender is 18-07-2023. Water Pipe Line Tenders in kolkata West Bengal. Bidders can get complete Tender details and download the document.
| Sr No | CorrigendumDate | Corrignedum | CorrigendumType | NewSubmissionDate |
| 1 | 07-Jul-2023 | BOQ Corrigendum | BOQ | 18-07-2023 |
| Sl. No. | Item Description |
| 1 | M & L for cleaning of RCC Under Ground water sump of various capacities by 6 stage mecha nised cleaning system, witn imported machines, complete with the following process :- Preliminary step : Cleaning the surrounding area of the sump/Tank with high presure jet to remove dirts, algaes, muds etc. Stage 1 (Mechanized Dewatering) Pumping out the water stored inside the sump/tank to a considerable level by using special type dewatering pump Stage 2 (Sludge Removal) Sucking & removal of residual water and sludge, which has settled on the floor of the sump/tank, with the help of special type high power sludge pumping equipments. Stage 3 (High Pressure cleaning) Throughly cleaning of the walls/ ceillings of the tank by using high pressure jet cleaners to remove the alages/contaminants cling on the internal surfaces of the tank which helps the growth of microbiological contamination. Stage-4 (Vaccume Cleaning) Removing of sludge, already deposited between rough surfaces of walls/ceiliing /floors of the tank, with high power industrial vaccume cleaner machine to make the tank absolute speck free. Stage -5 (Anti bacterial Spray) Spraying of anti-bacterial agent to all the walls, ceiling, floor of the tank for necessary anti bacterial treatment with high pressure spray machine, to make the tank totally bacteria free. |
| 2 | All as per item no 1.00 here in before but for RCC Over Head tanks of various capacities |
| 3 | All as per item no 1.00 here in before but for PVC tanks of various capacities. |
| 4 | Material and labour for construction of masonary valve pit chamber of size 1000x1000x900mm internally with burnt brick (Sub class "B") full brick thick brick work in cement mortor (1:6), 10 mm thick plastering in CM(1:4) internally and externally upto 150mm below the ground level, 150mm thick PCC (1:4:8) type D-2 (using 40mm graded stone aggregated) as in foundation bed with 150mm all round of set from outer side of brick work, 3 mm thick MS sheet cover with locking arrangement hinged with 50 x 50 x 6 mm angle iron frame embeded in PCC (1:3:6) type C-1 (using 20mm graded stone aggregated) as coping etc including painting with two coats of synthetic enamel paint over a coat of red oxide zinc chrome primer on steel surfaces including necessary earth work in soft/loose soil complete all as specified and directed. |
| 5 | Collecting the sample of water of required quantity in bottle/kit from different point submitted duly levelled the source through Engineer-in-charge for forwarding to the test house and testing of water for iron, PH value, Hardness, trubidity, chloride, fluoride ,aresenic test andproducing the test report in triplicate done from NABL & ISO 17025 accredited laboratory/National test House/Govt approvedlaboratory complete all as specified anddirected . Note : Testing shall be carried out monthly and report shall be submitted before 15th of every month. |
| 6 | Collecting the sample of water of required quantity in bottle/kit from different point producedduly levelled the source through Engineer-in-charge for forwarding to the test house and carrying outbacteriological test for water sample quaterly and producing the the test report in triplicate done from NABL & ISO 17025 accredited laboratory/National test House/Govt approvedlaboratory complete all as specified anddirected . Note : Testing shall be carried out quarterly. Note : Testing shall be carried out monthly and report shall be submitted before 15th of every month. |
| 7 | Detection of leakage in water main by required excavationin water logged/foul condition including bailing out leakage water by bucket etc for repair of leakage GI pipe of size 40/25/20 mm diameter bore including cutting, threading for addition & alternating for all as required as per the site including cost of labour charges and re-fixing of necessary fittings such as socket ,bend,elbow,etc in existing location complete all as specified anddirected. |
| 8 | Detection of leakage in water main by required excavation in water logged/ foul condition without hampering water supply including bailing out leakage water by bucket etc for repair of leakage in CI pipe of 150/100/80 mm size by burning out lead joints wherever required including cutting, threading for addition & alternating for insulation of fitting all as requiredcomplete all as specified anddirected. |
| 9 | Supply and fixing for 150mm dia cast iron butter fly valve IS-13095-1991 double flanged and wafer type(PSI-250) including all accessories including taking up/down of old unserviceable valve complete all as specified and as directed. |
| 10 | All as per item No 9 here in before but 100mm dia |
| 11 | All as per item No 9 here in before but 80mm dia |
| 12 | All as per item No 9 here in before but 50mm dia |
| 13 | Material and labour cast iron sluice valve conforming to IS -14846 with flanged ends of class PN 1.6 ISI marked, drilled for bolts comprising of Brass spindle cast iron operating wheel, including necessary rubber gasket joint complete with nuts boltsand washer for thesize of 150 mm dia bore complete all as specified and as directed. |
| 14 | All as per item No 13 here in before but 100mm dia bore size |
| 15 | All as per item No 13 here in before but 80mm dia bore size |
| 16 | Supply and fixing for 50mm bore gun metal gate valve conforming to IS -778 with iron wheel head,screwed both ends on GI pipes with GI union including taking down old gun metal valvecomplete all as specified and directed |
| 17 | Material and labour for painting of 10-30 HP capacity centrifugal pump set after removing old painted/rusted surface by paint removers such as blow lamps, scrapers etc over the surface of motor/pump body and giving one coat of red oxide primer and after which painting with two coats of backanticorrosive synthetic enamel paint on the surface of centrifugal pump set with electrical spray machine and letter writing by usingwhite paint on painted surface by showing MES No & Capacity on ordered location etc complete all as specified and as directed. |
| 18 | Supply and fixing for mild steel angle iron grade Fe 310-0 as in framing of valve pit cover including hinge and locking arrangement complete all as specified and directed. |
| 19 | Supply and fixing for 3mm thick mild steel plate conforming to Fe 310-0 as in covering of valve pit chember complete all as specified and directed. |
| 20 | Material and labour for painting of steel plate & mild steel angle any sizewith two coats of superior quality synthetic enamel paint after cleaning of existing surface complete all as specified and directed. |
| 21 | Supply and fix for PP-R Gate valves (brass insert) of 63 mm outer dia SDR 7.4 (PN16) UV stabilizedand antimicrobial fusion welded having theraml stabilityfor hot and cold water supply including all PP-R plain & brass threaded PPR fittings fixed complete to walls, ceilins or in floors etc with fusion joint etc complete all as spediffied and directed. |
| 22 | Supply and fixing forPP-R Gate valves (brass insert) of 90 mm outer dia SDR 7.4 (PN16) UV stabilizedand antimicrobial fusion welded having theraml stabilityfor hot and cold water supply including all PP-R plain & brass threaded PPR fittings fixed complete to walls, ceilins or in floors etc with fusion joint etc complete all as spediffied and directed. |
| 23 | Supply and laying for ductile iron pipe centrifugally cast-IS-8329-2000 of 150mm dia class K9, flanged end with and including rubber gasket joint complete with nuts and bolts but excluding DI specials complete in any length laid in trenches or in ground including taking down of old pipes complete all as specified and directed. |
| 24 | Allas per item No 23 here in before but 100mm diameter complete all as specified and directed. |
| 25 | Dimantling and taking up of old fittings and Supply and fixing DI specials class K-12 both end flanged or both end spigot/socket or one end flanged and other end spigot/socket any type such as bends, tapers, reducers, duck foot bend, tee pieces (single and double branch), etc including cutting of pipes for upto 150 mm dia ductile iron pipe as per site requirement complete all as specified anddirected. |
| 26 | S & F for continuous water level indicatorand control function in overhead water tanks, capacitance type,10 to 4500 PF, 0 to 100 % indication, +/- 2% accuracy 110/115/230/240 V AC Supply, 50 Hz, including signal cables andall necessary fittings complete all as specified and directed. |
| 27 | Mixing and dosing only calcium hypochlorite based granulur cholorination chemicals (disinfectant for water treatment) with available chlorine complete all as specified and directed. Note:- Chemical shall be procued and supplied by MES and shall be isued for above work on demand. |
| 28 | Supply and mixing common salt (Non iodised, best quality locally available) of 50 Kg/ bag complete all as specified and directed. Note : Materials supplied shall be deposited to store and proper receipt taken. For regular consumption of materials shall be issued &maintain record duly signed by Engr-in-charge and contractor. |
| 29 | Outsourcing of services for operation and maintenance of Water Treatment Plants (softening plant) with accessories installed at Turf Viewfor safe and efficient running by employing a suitable and efficient manpower for the period of one calender month including repair/renewal of spare parts as and when required for smooth and efficient functioning of the plant of capacity of 10000 GPH and consisting of following accessories complete all as specified and as directed by the Engineer-in-Charge:- (a) One pressure filter capacity 10000 GPH. (b) One Softner capacity 10000 GPH.. (c) One oxidation chamber.10000 GPH (d) One brine solution tank. (e) One Air compressor. (f)Chlorine dozing pump including service tank. (g)Accessories for above items. Note:- (i) Unit rates shall be deemed to be inclusive of taking down unserviceable parts/accessories and refixing the same after minor repairs as required, adjustments of settings, cleaning down etc and replacement with new spare parts (measured separately) as and when required and including plant operations such as back washing, rinsing of filter and regeneration of resin, rinsing and blending and testing of water for hardness and iron on daily basis (Morning & Evening) for smooth and efficient functioning of the plant. (All required Testing kits will be provided by the contractor including chemicals / reagent required for testing.Tests will be conducted upto the entire satisfaction of Engr in Charge).Contractor shall be responsible for making salt solution and charging of salts. (ii) New spare parts required for renewal shall be measured and paid for separately under relevant items. |
| 30 | Material and labour for preparing of outer surfaces of IR plant tank of pressure feed filtration plant comprising of oxidation plant, iron removal plant, brine solution, softeing plant of 10000 Gallon capacity including all frontal pipes located at Pump House and applying one coat of synthetic enamel paint (as per existing colour) with spray painting machine including arrow marking on inlet and outlet pipe line after applying one coat of red oxide primer complete all as specified anddirected. |
| 31 | Material and labour for one coat of synthetic enamelpaint(external surfaces) for old painted surfaces of pipes those are exposed and laid horrizontally at Pump House not exc. 10mm width or girth after complete removal of loose paint, sludges, rust etcincluding one coat of red oxide primer complete all as specified and as directed. |
| 32 | Material and labour for preparation of old painted Air compressor equipment body such as electric motor, air cylinder and compressor etc and applying two coats of grey synthetic enamelpaint on motor/air cylinder/air comprssor body and two coats of red syntheic enamel painton fan guard and two coats black synthetic enamel paint on base channel frame with spray machineincluding one coat of red oxide primer complete all as specified and directed. |
| 33 | Taking out burntcopper winding from motor of up to 3 HP capacity andrewindingwith super enamelled best quality copper wire of suitable gauge including insulation,heat varnishing and refixing in position including testing and commissioning complete all as specified and as directed. |
| 34 | Supply and pouring resin inside beds of softening plant chamber complete all as specified anddirected. Note : Materials supplied shall be deposited to store and proper receipt taken. For regular consumption of materials shall be issued &maintain record duly signed by Engr-in-charge and contractor. (Make :- Zeolite 320/ Thermax/ Indion 225NA) |
| 35 | Supply and fixing as in repair 3/8" dia white transparent suction tube complete all as specified and directed. |
| 36 | Supply and fixing as in repair 3/8" diawhite transparent delivery tubecomplete all as specified and directed. |
| 37 | Supply and fixing as in repair water pressure gauge 0.150 Ibs/2/0-12kg/Sqcm capacity complete all as specified anddirected. |
| 38 | Supply and use hardness water testing chemicals re-agent solution "A", "B" & "C" complete all as specified and directed. |
| 39 | Supply and use water hardness test kit with all testing manual duly laminated complete all as specified and directed. (Make : ION EXCHANGE/Zeolite/Thermex) |
| 40 | Supply and use iron test kit with all testing manual duly laminated complete all as specified and directed. (Make : ION EXCHANGE/Zeolite/Thermex) |
| 41 | Supply, cleaning and filling the pressure filter sand inside the pressure filter (type of sand 16/30 mesh) complete all as specified and directed. Source: Baraker river. |
| 42 | Supply, cleaning and filling the pressure filter gravel / fileter media of size upto 25mm complete all as specified and directed. Source: Baraker river. |
| 43 | Supply and charging inside the oxidation chamber of catalyst (MNO2) complete all as specified anddirected. |
| 44 | Supply and fixing for 100mmbore diaphram valve angular with rubber diaphgram including taking out old unserviceable one complete all as specified and directed. (Make : Kirloskar/Upadhaya/Kirloskar/Leader/Kalpana) |
| 45 | Supply and fixing for 80mm bore diaphram valve angular with rubber diaphgram including taking out old unserviceable one complete all as specified and asdirected. (Make : Kirloskar/Upadhaya/Kirloskar/Leader/Kalpana) |
| 46 | Supply and fixing for 50mm bore diaphram valve angular with rubber diaphgram including taking out old unserviceable one complete all as specified and directed. (Make : Kirloskar/Upadhaya/Kirloskar/Leader/Kalpana) |
| 47 | Supply, fixing, testing and commissioning chlorine dosing system consisting of FRP coated foot mounting solution preparation tank of capacity 100 litre including service tank of capacity 100 litre,drive 0.25 HP 1440 RPM single phase,insulation IP-55,gear ratio 30:1,MOC - fibre glass reinforced polymer including inlet/outlet drain pipe,level gauze and fitted with speed reducing motor,SS 316 agitator as per existing including taking down old one complete all as specified anddirected. (Make : AVON/ Aquapura/ Declibac/ RMCO) |
| 48 | Supply and mixing soda Ashcomplete all as specified and as directed at site by the Engineer-in-Charge.Note- Materials supplied shall be deposited to store and proper receipt taken. For regular consumption of materials shall be issued &maintain record duly signed by Engr-in-charge and contractor. |
| 49 | Excavation in trenches not exc 1.5 m in depth and not exc 1.5 m wide for taking out/laying CI/GI pipes and getting out in soft/loose soil complete all as specified and directed |
| 50 | Removing excavation soil at a distance not exc 50 m and deposited where diverted complete all as specified anddirected |
| 51 | Returning,filling in including spreading, leveling, watering and well rumming in layers not exc 25 cm thick complete all as specified and directed |
| 52 | S&F for 4 Pole power Contactor of rating 360 Amp MCX42, 2NO+2NC, (Make- L&T or equivalent as approved by the GE) |
| 53 | Labour only for lifting/ lowering of unserviceable submersible pump set from tube wall after disconnecting the electric supply and taking out all coloumn pipes flanged/ socket type of any length keeping serviceable fittings in safe custody for reuse, removingunserviceablematerials from site, making good of disturbed surfaces and carrying submersible pump set to nearest repairing workshop including bring back after necessary repairs and lowering the same including all necesary fixtures like rubber gasket/nuts/bolts/washers of suitable size or welding materials for jointing cloumn pipes flanged/ socket type and connection of electric supply to motor, testing/commissioning, etc. complete all as specified and directed. Note. : Replacement of Column pipes shall be measured and paid seperately. |
| 54 | 20 HP |
| 55 | 15 HP |
| 56 | Material and labourfor necessary repair to motor of submersible pumpand taking out burntwindings, cleaning, re-winding with superior quality super enamelled copper wire of existing gauge, overhauling, refixing and testing complete for following capacity of pump. |
| 57 | 20 HP |
| 58 | 15 HP |
| 59 | Taking up or down steel tubing & connection and removal from site directed for GI pipe 80mmbore of pipes complete all as specified and directed |
| 60 | All as per item No 55 here in before but od size 50mm bore |
| 61 | All as per item No 55 here in before but od size 40mm bore |
| 62 | Supply and laying for 80mm bore galvanised iron pipes ofmedium grade with ISI Marked with all tube fittings ( such as bends, elbows, tees, short pieces of medium grade , connectors, back-nuts,caps, plugs and unions etc.) layingin trenches/ floors/ ducts and also cutting pipes, screwing,and for making forged bends on piping as required complete all as specified and directed |
| 63 | All as per item No 58 here in before but 50mm bore GI pipe. |
| 64 | All as per item No 58 here in before but40mm bore GI pipe. |
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