Till date i have discussed ESP mechanical work up to inner roof panel.
ESP supplied by BHEL requires enormous quantity of welding (structural)ired
at site . Therefore vendor should have adequate number of qualified welder
for the job . For 500MW and above unit at least 35 to 40 welders and around
20 tack welders are required at the peak time. As ESP jobs mostly sequential
in a pass therefore any delay on welding will delay the subsequent activities.
-Once all electrodes were loaded on temporary J- bolt then alignment work
for frames and shifting the load to permanent supports starts.
- Parallel erection of hopper wall also start once electrodes are fixed with
frame by bolts and this bolts are fixed by Huck bolting machine.
- Once should check the compatibility of the machine and bolts.
- All inner roof welding ,insulator housing work etc is complete then go
for insulation of inner roof and outer roof fixing.
- Funnel pre=assembly outlet and inlet to be done separately with from
the beginning as these activity will take about an year due to interfaces
Inlet funnel and outlet funnel requires huge space for assembly and at
site to get those space is difficult .However with proper planning same
could be achieved .
ESP wall erection, roof erection and GD screen erection can be viewed.
Inlet funnel erection under progree with heavy duty crane.
Outlet funnel erection under progress.
continued part-v
Outlet funnel erection under progress.
continued part-v
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