Military Engineer Services-MES has published Tender For Repair Or Maintenance Of Filter Bed, Cleaning Of Sludge, Cleaning Of Overhead And Sedimentation Tank, Flocurent System At Pump House No 01 At Hq Eac (U) (Af) Under Ge (I) (Af) Shillong. Submission Date for this Tender is 29-12-2023. Mechanical engineering Service Tenders in shillong Meghalaya. Bidders can get complete Tender details and download the document.
| Sr No | CorrigendumDate | Corrignedum | CorrigendumType | NewSubmissionDate |
| 1 | 22-Dec-2023 | Bid Auto Extn Corrigendum | Bid Auto Extn Corrigendum | 29-12-2023 |
| Sl. No. | Item Description |
| 1 | Material and labour for cleaning of semi underground RCC sumps of 1 Nos of 60,000 Gallon capacity, cleaning of tank to be done two times( First cleaning to be done within two month of accepting of contract and minimum gap of three month between second cleaning) through 7 stages of cleaning and sterilization consisting of three stages of bacteriological screening done by Terbac-G5, Terbac-G65 and Ultra Violet ray process complete all as specified and as directed by Engr-in-Charge. Note : (a) Two time cleaning shall be done. (b) First stage is to drain out the water by using exit valve or our own high capacity dewatering system (c) Second stage is cleaning all the algae formation inside the tank by using TERBAC G10 a laboratory tested branded chemical of the company and scrubbing the walls of the tanks. (d) Third stage is fresh water cleaning by high speed jet pumpwith pressure 5 PSI. (e) Fourth stage and first bacteria screening is Sterilization by using TERBAC-G5 aLaboratory certified branded halogen compound, test certificate of TERBAC-G5 from government laboratory mentioningsuitability for sterilization should be submitted to the office before using for sterilization . (f) Fifth stage is cleaning the floor of the water tank byheavy duty industrial vacuum cleaner. (g) Sixth stage is the second bacteria screening and sterilizing method by using ultra violet ray Ejector covering 360 degree with in the tank and kills all suspended bacteria. (h) Seventh Stage of cleaning and third bacteria screening is to sterilize the floor of the water tank by using laboratory certified branded strong oxidizing agent TERBAC- G65.Test certificate of Terbac- G65 From Government Laboratory mentioningsuitability for sterilization should be submitted to the office before using for Sterilization. (j) Entire T&P should be arranged by the Contractor at their own. Only electric power & water shall be supplied by MES at the stipulated rate as specified in Special Condition (k) COMPANY WILL SUBMIT GOVERNMENT LABORATORY TEST CERTIFICATE OF TERBAC-G5, TERBAC-G65, FIX THE STICKER MENTIONING THE DATE OF CLEANING & NAME OF SITE AND ALSO PROVIDE CERTIFICATE CONFIRMING THE COMPLETION OF STERILIZATION OF WATER TANKS MENTIONING THE NAME OF STATION AND DATE OF CLEANING. ALL THE CLEANING & STERILIZATION STAFFS SHOULD BE UNDER ACCIDENTAL INSURANCE COVERAGE. |
| 2 | All as per Item No 01 above complete but of 20000 Gallon capacity. |
| 3 | All as per Item No 01 above complete but of 15000 Gallon capacity. |
| 4 | All as per Item No 01 above complete but for semiunderground RCC sedimentationtank of 15000 Gallon capacity. |
| 5 | All as per Item No 01 above complete but for overhead PS tank of 25000 Gallon capacity. |
| 6 | All as per Item No 01 above complete but for overhead PS tank of 9600 Gallon capacity. |
| 7 | All as per Item No 01 above complete but for overhead PS /RCC tank of 5200 Gallon capacity. |
| 8 | All as per Item No 01 above complete but for overhead PS tank of 2500 Gallon capacity. |
| 9 | All as per Item No 01 above complete but for overhead PS/PVC tank of 1200 Gallon capacity. |
| 10 | Material and labour for cleaning of semi underground RCC sumps (Fire fighting sump) of 1 Nos of 50,000 Ltr capacity, cleaning of tank to be done one times by blocking the inlet valve,taking out the deposited silt, mud, sand etc by means of mannualy / mechanically (to a distance n.exc 50 Mtr from site where directed), scrapping the entire inner area of the sump with wire brushes to remove scales / deposition from the walls / floor and ceiling surfaces, and removing from site to a distance n.exc 50 Mtr, washing with bleaching powder (not less than 15 Kg per sump), washing the walls / floor / ceiling with fresh water, and normalising the water system by opening the inlet valve after allowing sufficient drying time,stenciling cleaning date on wall (using black/white paint) complete all as directed by the Engr-in-Charge. |
| 11 | Material and labour for arresting leakages in semi underground sump with the following step :- (i)Excavation around the sump and identify the leakages/ seepage portion of the Semi underground sump and cutting the construction joint in "V" shaped grooves. (ii)Drilling hole in the Honey Comb portion. (iii)Patching the entire V shaped grooves with cement, admix and quick setting compound. (iv)Next step is grouting to be done with intraplast EP - a free flowing grout mix (During all threse operation tank must be fill with water. (v)Fixing of PVC nozzle for grouting with quick setting compound admix with cement,Inject the cement mixture with intraplast EP throught the nozzle by high pressure inject pump. Note : Only excavation, returning filling and removing of surplus soilshall be measured and paid under respective item of BOQ.During excavation any damages to be existing infrastructure (i.e pipe , wall etc) to be repaired/ replced by the contractor by his own cost. |
| 12 | Material and labour for water proofing coating to be made in 2 coats in the inner wall of the tank with tank coat epoxy coating (Potable water grade) |
| 13 | Material and labour for ladder/Plain sheet iron structure for replacement of existing unserviceable ladder at OHT and underground sump as per existing specification with corss-arms , bracing, supports, clamps and back plates, fabricated from structural steel sections including nut, bolts, water, welding, bending cold or hot, drilling holes for bolts, in any shape or size as indicated or directed and inclusive of one coat oa Aluminium Primer, one under coat and one finishing coat of aluminium paint, for complete all as specified and as directed. |
| 14 | Excavation in trenches in soft/loose soil n. exc 1.5 mtr wide and not exceeding 1.5 mtr depth and getting out all excavated materials and forming bottom surface to required level gradient for removing the old pipeline and for laying of water tubing complete all as specified and as directed . |
| 15 | Returning, filling in, in trenches incl spreading, leveling, watering and well ramming in layers n. exc 25 cm with excavated soil. complete all as specified and as directed. |
| 16 | Removing surplus spoils to a distance not exceeding 50 mtrs away and depositing where directed at a level n. exc 1.5 mtr above the starting point complete all as specifed and as directed . |
| 17 | Supply and fix in replacement LED Post top lantern of 20 Watts, 240V, 50Hz IP 65 made of black ABS plastic spigot, spun aluminium funnel shape with clear acrylicand accessories such as integrated drivers pre-wired etc suitable with gate lightpipe. Make: Crompton / Bajaj/ Philips/ Havells/ Osram/ Wipro/ GE Note:- (a) LM-79 and LM-80 certificate from NABL accredited Lab shall be submitted for LED light fittings to the Engineer-In-Charge. (b) Warranty certificate shall be submitted for LED light fitting as per standered format for minimum 50000 Hrs to the Engineer-In-Charge. (c) LED light fitting and drivers shall be of same make. |
| 18 | Material and labour for cleaning of pump house vegetation/wild plant and grass (appx area 100X50 Mtr),scrapping and removing of algae from stairs, drains,chemical doser room tanks,aeration area and roofs of pump room /filter room,cleaning throughly filter bed walls by scrubbing them using bleach and washing it as per satisfaction of Engr-In-Charge. |
| 19 | Material and labour for complete removal of old existing filter media (sand and gravel) from filtration plant, filter bed of 98000 LPH capacity and throughly cleaning washing the filter bed inner surface and steel pipe line (lateral and header pipes) by removing all dust particles by means of soda, bleaching powder, etc by using steel wire brushes or steel scrapers complete all as directed. |
| 20 | Material and labour for replacing following filter media spreading in layers size wise with filter media as per sample approved by GE complete all as directed. |
| 21 | Sand of size 0.45 mm to 0.70 mm |
| 22 | Gravel of size 3 mm to 6 mm |
| 23 | Gravel of size 6 mm to 15 mm |
| 24 | Gravel of size 15 mm to 25 mm |
| 25 | Gravel of size 25 mm to 40 mm |
| 26 | Gravel of size 40 mm to 50 mm |
| 27 | Material and labour for preparation of old painted steel surface of any description over 10 cm width or girth ,priming with red oxide,zinc chrome,andpainting of one coatof synthetic enamel paint (1st grade quality)painting to outer surface of over head presses steel tank and stagging mounted on 10 to 15 mtr height including writing the capacity of tank and date of cleaningwith white paint on black backgroundcomplete all as specified and directed. |
| 28 | Material and labour for Hardcore of gauge n exc. 63 mm, deposited, spread and levelled in layers n exc. 15 cm thick,with broken stone bouders watered and rammed to a true surface |
| 29 | Demolition of Cement Concrete (un-reinforced) Concrete of any description and in any position not otherwise specifically provided for complete all as specified and as directed. |
| 30 | Material and labour for plain Cement Concrete type C2 1:3:6 using 40 mm graded aggregate) in Foundation, Filling and Mass Concrete, complete all as specified and as directed. |
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