Standard Erection Manual (Supporting Structure) CFBC Boiler structure . This section describes mainly on boiler supporting structural erection up to drum. Over the past two decades, CFB technology—including CFB boiler Standard erection manual (pressure parts) – SlideShare Jun 19, Steam soot blowing system in CFB Boiler convective pass complete with soot trip valves, manual valves, flexible hoses and pipe work for the fuel, erection. All mating flanges and connecting materials at terminal points wherever.
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S H rear wall inlet header. Suspension erectionn are adjusted so as to align the roof tubes. Fix the lifting and guide pulleys according to site condition.
C C pump volute is blanked with suitable blanks. No glittering to tyndal effect. Temporary angle stiffners are fixed at two places as shown in the fig. Hydrostatic Testing – The hydraulic test pressure reading will be taken from the official pressure gauge located at the highest point in the presence of the Inspector.
The welds at the joints should be complete and leak proof. Bharat Heavy Electricals Limited – Tiruchirappalli Check for damages like sling marks, deep cut and dent etc.
Log In Sign Up. Cut the scalloped bar only top scalloped bar of seal box as shown in Fig.
boiler erection manual bhel
Filling line is connected to the Boiler drain Header, Recirculation line is connected from the delivery line to the tank. The formation of rear arch tubes is shown in Fig. Quality is the key to Productivity and Prosperity. Stirrup plates are pre-assembled with top and bottom angle as shown in Fig No. After reaching final position, panel load is taken in permanent supports and temporary boileg are removed.
While lifting the header, use a tag line to control the load movement of header. Hose down internally, the pump case, the valves and adjacent piping, to ensure the removal of all loose debris.
The bow in both the planes, scarfing line and stub verticality.
This will reduce the DM water consumption, as well as time. System pipe work should be adequately supported to accept the weight of the circulator.
Weld item B bottom scalloped bar and seal box with pressure parts before the hydraulic test refer the Fig. All attachment welds on to pressure parts are to be done with Basic coated low Hydrogen electrodes. If necessary motor is adjusted to make the distances equal all around.
cfbc boiler erection method statement
Quality of treated DM water or treated condensate: Approach for all pulley blocks and rocker plates shall be ensured. ES Dec 27, — Quality checklist for tower erection. Now the cranes will be positioned near rear end and this end will be lifted by about mm using 4″ slings. The following method statement is written to provide a safe and efficient system of work for the installation of general working scaffold to all areas of construction sites both internal and external.
This arrangement should be in such a way that it can be shifted at top to lift each coil. This manual will help you to technical details required during erection of mw boiler.
Two tie members of the wagon will be removed. For headers which have an offset with the supporting structure axis – lift the header and place it over the temporary support and match the header axis with the centerline marked over the temporary support. After completion of front tubes with inlet header erection, rigging arrangement is shifted to rear side-ceiling structure.
These are around 25 such assemblies supporting superheater and Reheater coils. II – Temporary Brackets are welded to the columns inside the furnace at the predetermined buckstay elevations. Transformer Installation Method Statement – Electrical Similarly rear header joints are completed.
For the dimensions and the amount of presetting refer the contract drawing. All the components of pressure parts are given Mark Nos. Final inspection before drum lifting: