The brief scope of work includes Design, Engineering, Manufacture, Shop Testing at works/

Type Testing, Supply, Handling & Storage at Site, complete Installation, Testing &

Commissioning, putting into satisfactory operation, successful ‘Completion of Facilities’ and

Performance and Guarantee Testing of Electrostatic Precipitator Package including supply

of Mandatory Spares.

Each Electrostatic Precipitator serving one Steam Generator shall have but not limited to

the following:

Six (6) numbers of independently operated passes (gas streams) housed in Six (6)

Nos. of independent casings including outside shell, structural steel supports and

frame work (excluding foundation), access ladders, platforms, safety rails, stairways,

walkways, access doors and weather proof pent house, matching flanges alongwith all

bolts, nuts, gaskets and all the expansion joints etc. as required to connect the ESP

passes.

Flue Gas Inlet Distribution System complete with perforated plates, turning vanes,

deflector plates, flow splitters, guide vanes and all necessary gas flow control devices

in the inlet and outlet cones and duct, warranted by the results of flow model test,

complete duct stiffening devices, interior bracings, slide plates, access doors,

brackets, supporting structures, hangers, sampling connections.

Collecting and Discharge Electrode Systems, Rapping System complete with

structural supporting frame, drives and automatic rapping control.

High Voltage Transformer-Rectifier Sets complete with bus sections, grounding

switches, controls, leveling wheels, etc.

Monorails with electrically

Ash Hoppers complete with heater, level monitors and indicators, outlet flanges,

jointing material, poke holes, access doors and walkways beneath the hoppers.

Foundation base plates, bolts along with templates, nuts, anchor materials, packing

shims, inserts & embedments alongwith lugs, inspection and maintenance access

doors, frames and safety locks, safety devices, safety barriers.

operated hoists including monorail beams on the roof for

handling transformer rectifiers.

One (1) No. conventional type Elevator for each ESP Control Room.

Water washing system for the ESP and its hoppers along with all piping, valves and

nozzles.

Thermal insulation, Lagging, Cladding & Refractories etc.

Opacity monitors complete with all accessories at the outlet of each pass (gas

stream).

Comprehensive model testing by fabricating a three dimensional physical model of the

ESP and its ducting.

MCC / Auxiliary Control Panel for power supply to rapper motors, hopper heaters &

insulator heaters etc.

Complete microprocessor based ESP management and control system including the

intermittent charging TR Set controllers, rapping system controllers, communication

controllers etc.

Complete cable erection including cable support structures, cable trays, conduits,

cable termination lugs, glands, cable tag numbers, core identification ferrules, junction

boxes, local push button stations etc.

The Electrostatic Precipitators shall be of outdoor type and installed on the cold end

side of regenerative air preheaters. The flue gas shall be drawn from air preheater

outlets of the balanced draft, pulverized coal fired Steam Generator and guided

through adequately sized duct work (included in separate Steam Generator Package)

into the specified number of independent gas streams of each ESP. Similarly, the flue

gas after the Electrostatic Precipitators shall be led to the suction of the induced draft

fans.

The Steam Generators are designed to burn pulverized coal. Light Diesel Oil (LDO)

shall be used during startup and at low loads for warm up and flame stabilization of

Steam Generator. The ESP shall be designed to remove fly ash particles (to meet the

stipulated ESP efficiency levels) from the flue gas generated in the Steam Generator

with pulverized coal firing.