AIR PREHEATER ( LUNJSTORM) FOR BOILER ERECTION PLAN PART-2

Air preheater erection can be started just after erection of last ceiling girder and can be continued

along with Pressure Part erection. However approach for pressure part  should be kept open.

For Boiler where Air heaters are installed in second pass approach from rear and both sides

should be available. Two other issues may crop up i) Construction of fan foundations ( PA & FD)

ii)  Erection of ducts just above Air heater. It is noticed that approach area at the rear gets

congested early because of multi- discipline starting of erection work like ESP , SG , coal

gallery , Ash handling work , duct support , electrical tray work etc. Therefore it needs good

planning and idea about the priorities for all the above work otherwise conflict bound to happen

and derails the time schedule.

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