REPAIR OF BOILER STACK AND REPLACEMENT OF DAMPERS IN FLUE GAS DUCTS

Amount

FABRICATION AND ERECTION OF MAIN BOILER STACK RAIN HOOD WITH (SS316 ) AS PER THE SCOPE OF WORK.

REPLACEMENT OF TOP SEGMENTS OF BOILER STACK (IF REQUIRED) Replace the damaged portion of the shell (TOP SEGMENT) of main boiler Stack ( Approx. 1.5mtr from top) including rolling of sheet, fabrication and welding in position (at all elevation) or in dropped down condition with MS plate of required thickness, strictly as per the existing design and instruction of engineer-in-charge and scope of work. The MS plate required to replace the shell shall be supplied by HOCL free of cost from its stores. All the tools & tackles, static/mobile Crane/lifting/transportation equipments if any required, supply and fabrication of derrick for construction purpose, all kinds of consumables like welding rods, cutting gases , labour including supervision and providing suitable sca ffoldings also shall be in the scope of contractor.

Supply and application of Heat resistant Aluminum painting Surface preparation and painting of Main Boiler Stack including connecting ducts. Finish Coat (F - 11) - Heat Resistant Aluminium Paint THREE COAT suitable upto 250º C Composition Duel container (paste & medium). Composition Heat resistant special varnish medium combined with Aluminium flakes Volume solids 20 - 25% (min.) DFT- 20 microns/coat (min) Total DFT – 60 Microns (min) Covering capacity 10 - 12 M2/Lit/coat

Fabrication, replacement and erection of economizer & its interconnection dampers as per the scope of works.

Fabrication, replacement and erection of Boiler ID fan outlet dampers as per the scope of works.

Fabrication and erection of new dampers to the inlet of boiler stack as per the scope of works.

REFRACTORY REPAIR WORK OF MAIN BOILER ID FAN OUTLET DUCT This includes removal of damaged portion of castable refractory and relining with castable (Silica based) refractory as per the scope of work. HOCL shall provide required quantity of castable (Silica based) refractory. Any special mixing media required for the mixing of casting material shall be arranged by the contractor.

Replacing of damaged casing sheet of boiler and its connecting ducts as per the scope of work.

P T KRISHNAN ENGINEERING CONTRACTOR

V R Reji

TECHNOCRATS

MECON ENGINEERING CONSTRUCTION