M/o Completed scheme of Nazul A/C-II under SWZ.SH - Desilting of sumpwell by using super-sucker machine at Sarita vihar underpass.

Cleaning and De-silting and taking out debris/silt, rubbish etc. from sump by deploying super sucker machine 2200 PSI machine sets (consisting of one No. of chasis mounted suction machine having suction capacity of minimum 4000 litre/hr. at 80% vacuum and two chasis mounted dump tanks with capacity of 10000 litres), working for one shifts (8 hours) machines each day. The operations of de-silting shall be video-graphed for 10 minutes per day and a minimum of 10 photographs shall be taken daily, five each at the start and end of operations, showing the original and cleaned state of sump. All the photographs and videos in digital form shall be submitted (CD's, pendrive, etc.) as per the direction of Engineer-in-charge. The rate is inclusive of working of 01 sets of machines for 08 hours per day, all the required T&P, fuel oil, gas detector, forced air ventilators wherever required, safety measures, warning lights, insurance of workers, disposal of silt/debris for all lead and lifts at a suitable place as per DPCC/NGT guidelines etc. The output of each machine per shift of 8 hours shall not be less than 27.5 cubic metres (Density not less than 1.6 t/m3). Nothing extra is payable for achieving more output, but deduction for less output shall be made on pro-rata basis. a). The rate is per day for one sets of machines working 08 hours/day. b). The dump tanks shall have to weighted after filling and emptying each cycle to monitor the minimum output per machine/per shift of 8 hours and these weight slip must be submitted by contractor to the divisional office. c). Log-book shall be maintained for machine to record working hours and shall be acknowledged by DDA staff and contractor daily