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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Check the IBR inspection seal on the header. Orifice size and number are checked dfbc reference to the drawing Orifice bore sizes are checked with ” G O – N O – G O ” gauge before installation. After site hydraulic test of the boiler no welding shall be performed in pressure parts.

Before the erection of Rear waterwall all Reheater coils bolier to be erected. Arrest the header as shown in the fig. Click here to sign up. Quantity of structural steel differs manufacturer to manufacturer.

Use soft materials like gunny bag while lashing the ropes over the W B s to avoid dents, rubbing marks on the same. This arrangement should be in such a way that it can be shifted at top to lift each coil. The pressure gauges are to be calibrated as per Q A manual.

BHEL is a leading manufacturer of mechanical and electrical Since India’s demand for energy is growing rapidly, coal-fired …. The Boiler water-circulating pump comprises a single stage centrifugal pump driven by a wet stator induction motor as shown in Fig.


After final alignment, roof tubes are welded with Inlet and outlet header stubs. This is to accommodate the expansion of cbfc. Log In Sign Up. After completion of the Hydraulic test, the inspector shall carefully examine the boiler inside and outside and satisfy himself that it has satisfactorily withstood the test.

Front roof tubs are preassembled with front inlet header and rear roof tubes with outlet header in furnace cavity, Ref. These holes are to be in the direction opposite to chemical dosing pipe.

All rear tubes are welded with the rear outlet header supports. Similarly the front end of the drum will be lifted with the help of cranes and this end also will be packed maanual wooden sleepers so as to manua, the front end. Scalloped Bar Welding Detail 1.

method statement power plant erection

Lift the upper Eco coils using the floating pulley system. Pre-assembled stirrup and angle assemblies are inserted over the furnace side flange of the buckstays beam. These guides are to be erected after floating the furnace. Check whether the downcomer cover assembly has been installed over the downcomer openings to avoid vortex formation during operation. At this stage, the gap between the flange faces should be equal all round the flange. Hence, the unit should be kept under preservation for protecting the internal surface from oxidation.

Bharat Heavy Electricals Limited. De-pressurisation of the Pressure Parts.

cfbc boiler erection method statement

Boiler Erection Month Wise Photos. Grinding Plant Erection Manual – patrizia-karda. The end caps are to be removed only at the time of final fit up. Orifice assembly is installed in the ring header after completion of steam blowing activity.


After final alignment, middle joints are mnual and tube support lugs are welded with end bars. Support channel is connected crbc the support rod through pin connection. Drum Level Operating floor level Near pressurizing pumps The indicator of the pressure gauges selected should have at least 6″ dial graduated for a range of double the intended maximum test pressure, but in no case the range be less than 1!

First pass radiant roof can be erected in there different methods. The coils are to be lifted as shown in Fig. All front panels are erected and aligned with respect to Boiler axis.

cfbc boiler erection method statement – CFBC Boiler

Gap between radiant roof tubes at the junction of front waterwall. Refer C C pump erection procedure. A typical cross sectional view of drum internal is shown in Fig. Obiler and lighting arrangement shall be ensured. Complete the erection and welding of Eco outlet header to drum links including permanent support. Roof tube supports are suspended from ceiling structure.

This includes low-grade and difficult-to-burn fuels such as anthracite, lignite, petroleum coke, oil shale, discarded coal, and biomass within a wide range of mixing rates.

The locations of Pressure part components and assemblies are also indicated in the figures. Si0 PPM 2 Less than 0. Quality of treated DM water or treated condensate: