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| 1 | De-silting/Taking out accumulated sludge, silt, mud, etc. from sedimentation/ settling and clear water sump of different capacity and sizes by means of including washing the internal wall and removal of deposited mud, sand, scales etc complete to a distance not less than 50 mtrs away and cleaning the surface through high pressure pump by using anti bacterial sprays and ultra voilate rays as directed for the diffirentcapacity at veriaous locations, etc complete all as specified and as directed. ( Note-Cleaning of tanks from specilised team ) |
| 2 | Scraping, de-scaling, cleaning internal oldplastered surfaces of sedimentation /settling/ clear water tank of differentsizesand applying two coats of Black Bituminous Paint suitable for Drinking Water including preparation of surface, etc complete all as specified and as directed. |
| 3 | Cleaningofthe area surrounding the filteration plant , removing grass and unwanted plants , made the area neat and clean, etc complete all as specified and as directed. |
| 4 | Labour only for cutting existingGI pipe/ms plates of any sizecomplete all as directed and running welding in repair to metal n. exc6 mm thick , etc complete all as specified and as directed.( Note :- ALL welding material deemed in quated rates ) |
| 5 | Opening completely pressure filter of capacity 10000 gallons per hour and taking out existing filter media (sand, gravels) and nozzles, removing filter media to a distancenot exceeding 50 mtr and nozzles to MES store yard including necessary repair/welding to make the pressure filter vessels completely leak proof for improving strength and finally reassembling the pressure filter including re-fixing the old serviceable nozzles in position duly cleaned etc complete all as specified and as directed.(Note-Filter media will be issued and paid seprately) |
| 6 | Opening completely Bed filter (New Building )of capacity 40000 gallons per hour and taking out existing filter media (sand, gravels) etc , removing filter media to a distance not exceeding 50 mtrnecessary repair work to make the bed filtercompletely leak proof for improving strength and finally reassembling the bed filterduly cleaned etc complete all as specified and as directed.(Note-Filter media will be issued and paid seprately) |
| 7 | M&L for cleaning of old paintedinternal surfaces of pressure filter by scrapping andapplying two coats of black bituminuos anti corrossive paint suitable for drinking purpose etc complete all as specified and as directed. |
| 8 | Material and labour for preparing old paintedexternal steel/iron surfaces of pressure filter by scrapping andapplying two coats of aluminium paint(1st grade) over a coat of red oxide primer etc complete all as specified and as directed.(Make of paint: Asian/ Berger/Jonson & Nicolson/Nerolac/ Salimar ) |
| 9 | Cleaning and washing of old gravelhere in before with portable water, removing all impurities including screening in to different sizes and refilling the same into the existing pressure filter in layersetc complete all as specified and as directed. |
| 10 | Supply and fixing PVC nozzles strainers of size as per existing one (push/ thread type ) complete all as speified and directed by Engineer-in-Charge(Make: PHI / REMCO or equivalent as approved by GE ) |
| 11 | Supply and filling of new gravels of size 65/33mm, 20/33mm and 13/6mm in layers and filling upto 75cm from bottom of nozzles etc complete all as specified and as directed. |
| 12 | Supply and fillingof chemical Ferriminex (MNO2) of size 1/8\" x 1/10\" as filter media for existing filtration / iron removal plant, etc complete all as specified and as directed. |
| 13 | Supply and filling of SAND(collection source BARAKAR river bank), as filter media for iron removal plant in layers upto 45 cm height above gravel layer etc complete all as specified and as directed. |
| 14 | Renewal of of worn out / damaged gasket of suitable size including bolts, nuts and washers of manhole cover etc complete all as specified and as directed. |
| 15 | Repair/replacement of following under mentioned spare parts including servicing of Compressor ( Model No-E-75-10.5) through company service engineer including checking of motor bearings , wiring,relays,fuuses and other small connected parts and make the compressor in serviceable including taking down old unserviceable parts etc complete all as specified and as directed.a) Replacement of Service kit for HDKG120 Part No- B009401070002b) Replacement of Minimum pressure valve kit E7 Part No- B009301070002c) Replacement of Single phase preventor No-018360422d) Replacement of Blow down valve kit Lepsac Part No- B009401070003e) Replacement of Auto drain valve F5 & F6 Part No- B001302940001f) Replacement of Solonide valve240V NC Part No- B738208g) Replacement of Element therm valve E 125 Part No- 220310800h) Replacement of Element therm valve E75 Part No- B006700770007j) Replacement of Air filter element E55;165 Part No- B574607k) Replacement of Spine on filter-180LPMPart No- B407701l) Replacement of Actrrepair kit with spring Part No- B015401070005m) Replacement of Non return valve 1/2 Part No- B004101230002 |
| 16 | Rough excavation to river sand for divert water flow 8.5 mt wide,1.5 mtr depth & 45 mtr length etc and getting out in soft/loose soil at water point at RMS complete all as specified and directed by Engr-in-Charge. Note : JCB entry and exit from civil areashall be responsibility of contractor |
| 17 | Removal of surplus soil n;exc 50 mtr and deposited where as directed at a level n;exc 1.5 m above starting pointriver sand for divert water flow 8.5 mt wide,1.5 mtr depth & 45 mtr length etc and getting out in soft/loose soil at water point at RMS and Removing excavated material n exc 50 m and depositing where directed at a level n exc 1.5 m above the starting point complete all as specified and directed by Engr-in-Charge. |
