GE/ALP (8136B) KOLKATA OF 2022-23

Amount

M&L for Cleaning of R.C.C. Under Ground Sump of capacity 25000 Glns by 6 stage mechanized cleaning system, with imported machines, complete with the follwing process :- Preliminary Step Cleaning the surrounding area of the sump /Tank with high pressure 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) Thoroughly cleaning of the walls / ceillings of the tank by using high pressure jet cleaners to remove the algaes / contaminants cling on the internal surfaces of the tank which helps the growth of microbiological contamination. Stage - 4 (Vacuum Cleaning) Removing of sludge, already deposited between rough surfaces of walls / ceilling / floor of the tank, with high power industrial vacuum cleaner machine, to make the tank absolutely speck free, Stage - 5 (Anti-bacterial Spray) Spraying of anti-bacterial agent to all the walls,ceilling,floor of the tank, for necessary anti-bacterial treatment, with high pressure spray machine, to make the tank totally bacteria free. Stage - 6 (Ultra Violet Radiation) Sterilisation and disinfection of the tank by using specially designed UV radiator machine to kill any suspended / floating bacteria, if any, present inside the tank. This process shall be applied on the following sumps / tanks. The work shall have to be carried out through the following firms :- FASTCLEAN/TANKLEAN/FRESH TANK

All as per item 1 above but for R.C.C. Over head tank of capacity 2000 Ltrs to 25000 Glns

All as per item 1 above but for PVC Over head tank of capacity 250 to 2000 Ltrs

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 as directed.

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 and submitting the test report in triplicate done from NABL & ISO 17025 accredited laboratory/National test House/Govt approved laboratory complete all as specified and as directed . Note : Testing shall be carried out quarterly.

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 carrying out bacteriological test for water sample quarterly and submitting the test report in triplicate done from NABL & ISO 17025 accredited laboratory/National test House/Govt approved laboratory complete all as specified and as directed Note: Sample of water shall be collected and tested quarterly.

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 as directed

Removing excavation soil to a distance not exc 50 m and deposited where directed at a level not exc 1.5 m complete all as specified and as directed

Returning, filling in including spreading, leveling, watering and well ramming in layers not exc 25 cm complete all as specified and as directed

Taking up or down steel tubing & connection and removal from site directed for GI pipe 80mm bore of pipes complete all as specified and directed

All as per item no 10 above but size 50mm bore

All as per item no 10 above but size 40mm bore

All as per item no 10 above but size 25mm bore

All as per item no 10 above but size 20mm bore

Supply and laying galvanised iron pipes of medium 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.) laying in trenches/ floors/ ducts and also cutting pipes, screwing, and for making forged bends on piping as required for the 80mm bore of pipes complete all as specified and directed

All as per item no 15 above but size 50mm bore

All as per item no 15 above but size 40mm bore

All as per item no 15 above but size 25mm bore

All as per item no 15 above but size 20mm bore

Supply and fixing for Gun metal gate valve 50mm bore conforming to IS -778 with iron wheel head,screwed both ends on GI pipes with GI union including taking down old Gun metal valve bore complete all as specified and directed

All as per item no 20 above but size 40mm bore

All as per item no 20 above but size 25mm bore

All as per item no 20 above but size 20mm bore

Supply & fixing for 100 mm MS pipe, heavy duty (Class 'C') of thickness 5.4mm with flanged end commissioning to (IS 1239) (Part 'A' 2004) including painting with two coats of black bituminous paint (suitable for drinking water) over a coat of good quality metal primer including taking down old pipe complete all as specified and as directed. Note: The rates shall include the cost of consumables for cutting and welding.

All as per item No 24 above but 80mm bore.

All as per item No 24 above but 50mm bore.

Detection of leakage in water main by required excavation in water logged/foul condition including bailing out leakage water by bucket etc for repair of leakage GI pipe of size 80/50 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 and as directed.

Detection of leakage in water main by required excavation in 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 and as directed.

Detection of leakage in water main by required excavation in water logged/ foul condition without hampering water supply incl 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 incl cutting, threading for addition & alternating for insulation of fitting all as required complete all as specified and as directed.

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.

All as per item No 30 above but 100mm dia.

All as per item No 30 above but 80mm dia.

All as per item No 30 above but 50mm dia.

Material and labour cast iron sluice valve 150mm dia 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 bolts and washer for the size of 150 mm dia bore complete all as specified and as directed.

All as per item No 34 above but 100mm bore.

All as per item No 34 above but 80mm bore.

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.

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.

Material and labour for painting of steel plate & mild steel angle any size with two coats of superior quality synthetic enamel paint after cleaning of existing surface complete all as specified and directed.

Supply and fixing for PP-R Gate valves (brass insert) of 63 mm outer dia Complete with fittings by providing and fixing suitable PPR fittings including cutting and making fusion joint etc.complete all as directed

Supply and fix PP-R Gate valves (brass insert) of 90 mm outer dia Complete with fittings by providing and fixing suitable PPR fittings including cutting and making fusion joint etc.complete all as directed

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.

All same as item No 42 here in before but 100mm diameter complete all as specified and directed.

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 and as directed.

M & L for fabrication of aluminium bulletin board made out of double door shutter of size 884 mm X 593 mm using 40 mm X 18 mm aluminium section, main frame of size 1222 mm X 921 mm made of aluminium section 40 mm X 18 mm duly strengthened by another aluminium section of size 20 mm X 20 mm complete duly fixed with sunmica of size 1220 mm X 920 mm X 3 mm (thick) at back and 4 mm thick plain glass housed in front shutter panles using high class PVC gasket complete including two steel handles with magnetic locks at shutter to facilitate smooth opening.

Labour only for mixing and dosing calcium hypochlorite based granular chlorination chemicals (disinfectant for water treatment) complete all as specified and as directed at site by the Engr-in-charge. Note :- Calcium hypochlorite shall be issued for free for dosing under Schedule 'B'. Transportation of chemical from MES store to dosing point shall deemed to be included in quoted unit rate.

Supply and mixing common salt (Non iodised, best quality locally available) of 50 Kg bag complete all as specified and as 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.

Comprehensive maintenance of Water Treatment Plants (softening plant) with accessories for safe and efficient running at BSA Complex 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.

All as per item No 48 above but for Gokhale Road Complex.

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 and as directed.

Material and labour for one coat of synthetic enamel paint (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 etc including one coat of red oxide primer complete all as specified and as directed.

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 enamel paint on motor/air cylinder/air comprssor body and two coats of red syntheic enamel paint on fan guard and two coats black synthetic enamel paint on base channel frame with spray machine including one coat of red oxide primer complete all as specified and as directed.

Taking out burnt copper winding from motor of up to 3 HP capacity and rewinding with 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.

Supply and pouring resin inside beds of softening plant chamber complete all as specified and as 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. (Make :- Zeolite 320/ Thermax/ Indion 225NA)

Supply and fixing as in repair 3/8" dia White transparent suction tube complete all as specified and as directed.

Supply and fixing as in repair 3/8" dia White transparent delivery tube complete all as specified and as directed.

Supply and fixing as in repair water pressure gauge 0.150 Ibs/2/0-12kg/Sqcm capacity complete all as specified and as directed.

Supply and use hardness water testing chemicals re-agent solution 'A', 'B' & 'C' complete all as specified and as directed.

Supply, cleaning and filling pressure filter sand inside the pressure filter (type of sand 16/30 mesh) complete all as specified and as directed. Source: Baraker river.

Supply, cleaning and filling the pressure filter gravel / fileter media of size upto 25mm complete all as specified and as directed. Source: Baraker river.

Supply and charging inside the oxidation chamber of catalyst (MNO2) complete all as specified and as directed.

Supply and fixing for 100mm bore diaphram valve angular with rubber diaphgram including taking out old unserviceable one complete all as specified and as directed. (Make : Kirloskar/Upadhaya/Kirloskar/Leader/Kalpana)

Supply and fixing for 80mm bore diaphram valve angular with rubber diaphgram including taking out old unserviceable one complete all as specified and as directed. (Make : Kirloskar/Upadhaya/Kirloskar/Leader/Kalpana)

Supply and fixing for 50mm bore diaphram valve angular with rubber diaphgram including taking out old unserviceable one complete all as specified and as directed. (Make : Kirloskar/Upadhaya/Kirloskar/Leader/Kalpana)

EASTERN REFRIGERATION AND ELECTRICAL CO

SEN ELECTRIC WORKS

ELECTRO FREEZE

ARATI TRADING CO