Page 1 of 2

SALIENT TECHNICAL FEATURES

“Salient Technical Features of the equipment / systems / services covered in IFB No.

40087561 are mentioned below. These Salient Technical features are mentioned only to

facilitate the prospective bidders to prima-facie understand the requirements under the

tender and the bidder shall not in any way limit or alter the scope of work and technical

features/specification of equipment/system/services covered in the Bidding Documents.

Detailed provisions in regard of scope of work and technical features/specification of

equipment/systems /services, contained in the Bidding Documents shall be final and

binding”.

A. Brief Scope of Work:

The scope of Mobile Dry Sorbent Injection (DSI) System Package for Tanda Thermal

Power Station Stage-I, Unit 1 & 2 (2 x110 MW) shall cover design, engineering,

manufacture, shop fabrication, preassembly, shop testing/type testing at manufacturer’s

works, packing, transportation, unloading, handling and conservation of equipment at site,

complete services of construction including erection, supervision, pre-commissioning,

commissioning and performance testing of equipments under bidder’s scope of work of Mobile

Dry Sorbent Injection (DSI) System and its associated auxiliaries including all associated

Electrical, Control & Instrumentation works. Dry Sorbent Injection System shall use Sodium

Bicarbonate (SBC) as reagent and shall have but not limited to the following:

 One no. of mobile Sodium Bicarbonate (SBC) Storage Silos complete with Truck

Unloading System to Storage Silos;

 Sodium Bicarbonate Feeding system for Silo;

 1 no. of SBC Mill of minimum 3000 kg/hr capacity for grinding sodium bicarbonate;

 Injection system for feeding SBC at APH inlet & APH outlet in both the 110 MW units

(Unit 1 & 2);

 Instrument air compressor;

 Container for housing the DSI system;

 Complete Electrical System including all motors, LT Switchgears, Transformer, Electrical

Actuators, LT power & control cables, cabling, lighting etc.

 Complete C&I systems including SO

analyser.

 First fill and one year topping requirement of consumables/oils/lubricants, supply of

special maintenance tools and tackles, commissioning spares, mandatory spares etc.

 Supply & storage of 800 MT of semi-milled Sodium bicarbonate & 80 MT of hydrated lime;

Page 2 of 2

 Operation and Maintenance of mobile DSI system including supply of spares &

consumables for six months;

Detailed scope of work has been specified in the bidding documents.

B. Other Technical Features:

1.00.00 Dry Sorbent Injection (DSI) System

1.01.00 System Description:

The DSI system shall be mobile system and shall be installed inside a

container. The DSI system for SO

control shall be based on Sodium Bicarbonate as

reagent. The mobile DSI system shall also have the capability to inject powdered

hydrated lime at to meet SO

emission. Sodium Bicarbonate shall be milled before

being injected at appropriate location at APH inlet & APH outlet for capturing of SO

the flue gas. ESPs are installed downstream of APH where the reactants shall be

collected along with ash.

1.02.00 Service Conditions

The Steam Generators are designed to burn pulverised coal. HFO/HPS/LSHS and

LDO shall be used during startup and at low loads for warm up and flame stablisation

of Steam Generator. The DSI system shall be designed to remove SO

(to meet the

stipulated SO

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

with pulverized coal firing. High efficiency Electrostatic Precipitators are installed

downstream of Steam Generators.