Sand Blasting Process
- Sand blasting is used to remove or scrub off
the paint painted by the manufacturing
company on the pipe surface. - Sand blasting machine consists of compressor,
hopper, pipe and nozzle.
Sand used in the sand blasting ranges from
300µ to 500μ. - Pressure ranges from 200 to 400 mpa.
Reasons for using TMT
- Formability.
- Corrosion resistant.
- Weldability.
- Overall economy.
- Ductility and fatigue.
- No residual stress.
Checking
- Bar bending and cutting are satisfactory.
- Bar spacing are correct.
- Bar assembly are rigid and adequately supported.
- Cover to bottom and side bars are correct.
- Bars are properly tied.
- Latest revised drawing is used.
- Shuttering is in plumb.
Checking
- Weigh batch mixer calibrated.
- Approved design mix M30 is used for
- concreting.
- Vibrating is properly done.
- Concrete mix is homogeneous.
- Concrete slump checked time to time when
- concreting is going on.
- Concrete cubes are taken and marked with date,
- element and identification mark.
Control Panel
Instrumentation of this process includes instruments for
control, operations, monitoring:-
- Open Channel Ultrasonic Flow meter for influent.
- Online magnetic flow meters of sludge flow
measurements. - Ultrasonic Level Transmitters
- Pressure Gauges
- Dissolved Oxygen measuring system at aeration tank.
- Sludge Density Measurement.
- Temperature measurement at sludge digester
- PH measurements at sludge digester.
