Erection of Boiler

7/31/2019 Erection of Boiler

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PRESENTATION ON

ERECTION OF BOILER

KIRAN KUMAR ONI


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BOILER PACKAGES

Structures

Pressure partsNon pressure parts

Ducting

Rotating equipmentESP


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Structure for handling of Eco. Coils

from Zero mtr. to 43.5 mtrs


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In order to have a strong and safestructural footing the columns are to beerected very carefully.

It can not be transported and erected insingle piece.

Utmost care is taken in the pre-assembly

stage to maintain the matching of columnend faces & to achieve verticality with intolerance limits.

COLUMN ERECTION


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COLUMN ERECTION


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Once the column erection is over up to the

full height, the cross beams are placed

securely over the columns which supports

the main boiler.

After that anchor point called ceiling girder

on the top of the boiler is constructed on

all the sides of the boiler so that loadtransfer could take place

COLUMN ERECTION


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Heavy GirderHeavy Girder

LiftingLifting

S/S Heavy Girder installation

(Using Crane)

6 month after starting S/S

In the process of Modulization of

Boiler Furnace & Back Pass on the ground

S/S Heavy Girder installation (Using Crane)

2 month after Starting S/S

Heavy Girder

Installation

Module Assy

on the Ground

??

Heavy Girder

Installation??

Typical Construction MethodModulization/Concurrent Erection Method


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Install Heavy

Girder after

Panel Erection

Sequence of Modulization / Concurrent Installation


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BOILER DRUM ERECTION

WORKS TO BE COMPLETED BEFORELIFTING THE BOILER DRUM

AUXILARY PREPARATION WORK FOR DRUMLIFTING

welding of cat head structure at roof level

making ready of winches with anchoringarrangements

fixing of main pulleys, auxiliary pulleys &guidepulleys


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TECHNICAL DETAILS DRUM

over all length : 24.216m

weight (with out internals) : 234MTElevation (drum center) : 72.508m

No.of lifting lungs : 2 (for stage I lifting)

: 2 (for stage II lifting)

No.of suspension rod U-type : 2length&width of pulley blocks : 1700&700mm


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BOILER DRUM LIFTING

Drum is to be lifted in horizontal position

Initially drum is to be lifted at a height of68mtrs

The level of the drum centre is to beverified by water level to ensure exactelevation of 72.511mtr


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PRESSURE PARTS

Pressure parts is divided in to two passes

Erection of headers and water wall panel One side of water wall require 35 to 40

panels

Boiler walls are checked verticality andaxially with respect to boiler drum position


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CONSTRUCTIONOF HEADERS


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Install Heavy

Girder after

Panel Erection



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Assemble RH Final &

SH Final Tube Module

Assemble RH Final &

SH Final Tube Module



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InstallJack for

Drum



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DRUM

LIFTING



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Install

Downcomer

pipes (6ea)



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Assemble Back Pass Module

(Hanger rods, roof panel, LTRH)Prepare the

Assembling of

SH DIV. Module


S f M d li i / C I ll i


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Lift the Sub-

assembled SH

DIV. Module


S f M d li i / C I ll i


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Install the Jack

for SHP & RHP


S f M d li ti / C t I t ll ti


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Install the Jack

for Back Pass

Module Lifting




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Install the Wire

for Back Pass

Module Lifting


Seq ence of Mod li ation / Conc rrent Installation


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1st Lifting

ofBack Pass

Module




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Assemble the

Back Pass

Wall Panel




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SH tube

bundle

lifting

Lower panel lifting

Arch lifting

Assemble BackPass LTRH




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Assemble Eco

Tube, Eco Header




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Back Pass

Module

Final Lifting




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Install the

Burner windbox,

Low water panel,

Hopper panel,Water inlet header,

Suction inlet piping.



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Documents

Erection of Boiler