Periodical cleaning of OH/UG water tanks of DAE residential and non-residential buildings located at various locations under Chembur Maintenance Unit, Mumbai

Amount

ABSTRACT SHEET

PART A : MAIN ITEMS

Description of Work / Item(s)

Amount

PART A : MAIN ITEMS

Cleaning & washing of ferrocrete/Sintex RCC over head tanks on the roof of the building of various size in three operations (as below) including all necessary materials required for the above job i.e. vacuum pumps, pressure pump, automaticscrubbers, Hot Air Blower machine 10 W pressure spray and chemical required shall be supplied by contractor at his own cost. The work shall be include removing and re-fixing carefully ball cocks and making arrangement for ladder, buckets, dusters etc. complete all as directed by the Engineer-in-charge. Notes: 1. Shut off valves to distribution line, drain water from tank with de-watering pumps. 2. Apply approved disinfectant with a 10 Kg pressure spray pump. 3. Scrubbing of inner walls, ceiling and bottom surface carefully with nylon based scrubbers. 4. Removal of wash water and sediments from bottom of tanks with vacuum and suction with the help of wet vacuum pumps. 5. Rinse inside surface of tank with clean potable water, again remove wash water. 6. Internal disinfecting and sterilization treatment through Hot Air Blower machine (at a temperature at 550ºC) for RCC /ferrocrete under ground tanks / O. H. tanks only 7. Cleaning and disinfecting of water tank should be done in three times in a year approx. at an interval of 4 months, out of which one will be before monsoon.

Cleaning of over head water tanks of size varying from 1.87 M X 1.20 M X 1.20 M to 3.00 M X 1.20 M X 1.20 M at roof terrace of building of Chembur ( Building - F,G,H ), Ghatkopar and CHSS Dispensary at Kharghar ( 20 tanks x 4 Operations/cleanings)

Cleaning of over head water tanks of Sintex (PVC) water tanks 1500 Ltrs. To 3000 Ltrs. Capacity at roof terrace of building of Chembur ( Building - A,B,C,D,E,J,K,L,M,N,P,Q,R,S & T and CHSS Dispensaries at Vashi (62 tanks x 4 Operations/cleanings)

Cleaning of loft tank above 500 Ltr. upto 1000 Ltr (3 Tanks x 3 Operations/cleanings) at CHSS dispensary Ghatkopar, Dombivali & Andheri.

Cleaning under ground water sump.

Cleaning UG RCC water tank of sizes varying from 3.00 M. x 3.00 M.2.00 M. to 6.00 M. x 2.50 M. X 2.15 at Chembur. ( 11 tanks x 4 Operations/cleanings)

Cleaning UG RCC water tank of sizes varying from 3.00 M. x 3.00 M.2.00 M. to 6.00 M. x 2.50 M. X 2.15 at Ghatkopar. ( 3 tanks x 3 Operations/cleanings)

Cleaning UG RCC water tanks of capacities varying from 10000 Ltr to 15000 Ltrs at CHSS dispensary at Kharghar ( 1 tanks x 3 Operations/cleanings)

Testing of water sample periodically, Bacteriological contamination & potability test analysis chemical analysis as per clause no. 3.0 as directed by the EIC

Bacteriological contamination & portability test analysis.

Chemical test analysis

BALAJI ENTERPRISES

RESHMA CONSTRUCTION

BALAJI ENTERPRISES

RESHMA CONSTRUCTION